From ed99a4edb39e29a2bf1c165ee4e944a543bc597b Mon Sep 17 00:00:00 2001 From: Tong Li Date: Mon, 15 Sep 2014 13:17:52 -0400 Subject: [PATCH] initial python implementation Change-Id: I25ca78414cd26340a4a640cb4f9ee92dda650037 --- .coveragerc | 8 + .gitignore | 47 +- .testr.conf | 8 + README.md | 40 + babel.cfg | 2 + etc/monasca.conf | 33 + etc/monasca.ini | 25 + monasca/__init__.py | 0 monasca/api/__init__.py | 0 monasca/api/monasca_api_v2.py | 95 +++ monasca/api/server.py | 58 ++ monasca/common/__init__.py | 0 monasca/common/kafka_conn.py | 223 ++++++ monasca/common/resource_api.py | 117 +++ monasca/dispatcher/__init__.py | 29 + monasca/dispatcher/kafka_dispatcher.py | 41 + monasca/locale/monasca.pot | 22 + monasca/middleware/__init__.py | 0 monasca/middleware/inspector.py | 51 ++ monasca/middleware/login.py | 47 ++ monasca/middleware/metric_validator.py | 125 +++ monasca/openstack/__init__.py | 0 monasca/openstack/common/__init__.py | 17 + monasca/openstack/common/eventlet_backdoor.py | 145 ++++ monasca/openstack/common/excutils.py | 113 +++ monasca/openstack/common/fileutils.py | 146 ++++ monasca/openstack/common/fixture/__init__.py | 0 monasca/openstack/common/fixture/config.py | 85 +++ monasca/openstack/common/fixture/lockutils.py | 51 ++ monasca/openstack/common/fixture/logging.py | 34 + monasca/openstack/common/fixture/mockpatch.py | 62 ++ .../openstack/common/fixture/moxstubout.py | 43 ++ monasca/openstack/common/gettextutils.py | 479 ++++++++++++ monasca/openstack/common/importutils.py | 73 ++ monasca/openstack/common/jsonutils.py | 202 +++++ monasca/openstack/common/local.py | 45 ++ monasca/openstack/common/lockutils.py | 322 ++++++++ monasca/openstack/common/log.py | 713 ++++++++++++++++++ monasca/openstack/common/loopingcall.py | 147 ++++ monasca/openstack/common/service.py | 512 +++++++++++++ monasca/openstack/common/strutils.py | 311 ++++++++ monasca/openstack/common/systemd.py | 106 +++ monasca/openstack/common/threadgroup.py | 147 ++++ monasca/openstack/common/timeutils.py | 210 ++++++ monasca/tests/__init__.py | 87 +++ requirements.txt | 9 + setup.cfg | 45 ++ setup.py | 23 + test-requirements.txt | 22 + tox.ini | 42 ++ 50 files changed, 5146 insertions(+), 16 deletions(-) create mode 100644 .coveragerc mode change 100755 => 100644 .gitignore create mode 100644 .testr.conf create mode 100644 babel.cfg create mode 100644 etc/monasca.conf create mode 100644 etc/monasca.ini create mode 100644 monasca/__init__.py create mode 100644 monasca/api/__init__.py create mode 100644 monasca/api/monasca_api_v2.py create mode 100644 monasca/api/server.py create mode 100644 monasca/common/__init__.py create mode 100644 monasca/common/kafka_conn.py create mode 100644 monasca/common/resource_api.py create mode 100644 monasca/dispatcher/__init__.py create mode 100644 monasca/dispatcher/kafka_dispatcher.py create mode 100644 monasca/locale/monasca.pot create mode 100644 monasca/middleware/__init__.py create mode 100644 monasca/middleware/inspector.py create mode 100644 monasca/middleware/login.py create mode 100644 monasca/middleware/metric_validator.py create mode 100644 monasca/openstack/__init__.py create mode 100644 monasca/openstack/common/__init__.py create mode 100644 monasca/openstack/common/eventlet_backdoor.py create mode 100644 monasca/openstack/common/excutils.py create mode 100644 monasca/openstack/common/fileutils.py create mode 100644 monasca/openstack/common/fixture/__init__.py create mode 100644 monasca/openstack/common/fixture/config.py create mode 100644 monasca/openstack/common/fixture/lockutils.py create mode 100644 monasca/openstack/common/fixture/logging.py create mode 100644 monasca/openstack/common/fixture/mockpatch.py create mode 100644 monasca/openstack/common/fixture/moxstubout.py create mode 100644 monasca/openstack/common/gettextutils.py create mode 100644 monasca/openstack/common/importutils.py create mode 100644 monasca/openstack/common/jsonutils.py create mode 100644 monasca/openstack/common/local.py create mode 100644 monasca/openstack/common/lockutils.py create mode 100644 monasca/openstack/common/log.py create mode 100644 monasca/openstack/common/loopingcall.py create mode 100644 monasca/openstack/common/service.py create mode 100644 monasca/openstack/common/strutils.py create mode 100644 monasca/openstack/common/systemd.py create mode 100644 monasca/openstack/common/threadgroup.py create mode 100644 monasca/openstack/common/timeutils.py create mode 100644 monasca/tests/__init__.py create mode 100644 requirements.txt create mode 100644 setup.cfg create mode 100644 setup.py create mode 100644 test-requirements.txt create mode 100644 tox.ini diff --git a/.coveragerc b/.coveragerc new file mode 100644 index 000000000..88ffc85e2 --- /dev/null +++ b/.coveragerc @@ -0,0 +1,8 @@ +[run] +branch = True +source = monasca +omit = monasca/tests/* + +[report] +ignore-errors = True + diff --git a/.gitignore b/.gitignore old mode 100755 new mode 100644 index b498f8cb0..f1d1e3a9b --- a/.gitignore +++ b/.gitignore @@ -1,16 +1,31 @@ -*.swp -*.iml -.DS_Store -.cache -.classpath -.idea -.project -.target/ -debs/* -.settings/ -target/ -test-output/ -logs/ -log/ -*config*.yml -db/config.yml \ No newline at end of file +*.py[co] +*~ +doc/build/* +dist +build +cover +.coverage +*.egg +*.egg-info +.testrepository +.tox +ChangeLog +MANIFEST + + +*.swp +*.iml +.DS_Store +.cache +.classpath +.idea +.project +.target/ +debs/* +.settings/ +target/ +test-output/ +logs/ +log/ +*config*.yml +db/config.yml diff --git a/.testr.conf b/.testr.conf new file mode 100644 index 000000000..c06f76dcb --- /dev/null +++ b/.testr.conf @@ -0,0 +1,8 @@ +[DEFAULT] +test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \ + OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \ + OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \ + ${PYTHON:-python} -m subunit.run discover monasca $LISTOPT $IDOPTION + +test_id_option=--load-list $IDFILE +test_list_option=--list diff --git a/README.md b/README.md index bca1299bb..990de67b4 100644 --- a/README.md +++ b/README.md @@ -37,6 +37,46 @@ Requests flow through the following architectural layers from top to bottom: * API Specification: [/docs/monasca-api-spec.md](/docs/monasca-api-spec.md). + +python monasca api implementation +================================= + +To install the python api implementation, git clone the source and run the +following command:: + + sudo python setup.py install + +If it installs successfully, you will need to make changes to the following +two files to reflect your system settings, especially where kafka server is +located:: + + /etc/monasca/monasca.ini + /etc/monasca/monasca.conf + +Once the configurations are modified to match your environment, you can start +up the server by following the following instructions. + +To start the server, run the following command: + + Running the server in foreground mode + gunicorn -k eventlet --worker-connections=2000 --backlog=1000 + --paste /etc/monasca/monasca.ini + + Running the server as daemons + gunicorn -k eventlet --worker-connections=2000 --backlog=1000 + --paste /etc/monasca/monasca.ini -D + +To check if the code follows python coding style, run the following command +from the root directory of this project + + tox -e pep8 + +To run all the unit test cases, run the following command from the root +directory of this project + + tox -e py27 (or -e py26, -e py33) + + # License Copyright (c) 2014 Hewlett-Packard Development Company, L.P. diff --git a/babel.cfg b/babel.cfg new file mode 100644 index 000000000..15cd6cb76 --- /dev/null +++ b/babel.cfg @@ -0,0 +1,2 @@ +[python: **.py] + diff --git a/etc/monasca.conf b/etc/monasca.conf new file mode 100644 index 000000000..e9fa4a4ab --- /dev/null +++ b/etc/monasca.conf @@ -0,0 +1,33 @@ +[DEFAULT] +#logging, make sure that the user under whom the server runs has permission +#to write to the directory. +log_file=monasca.log +log_dir=/var/log/monasca/ +log_level=DEBUG + +[dispatcher] +driver = kafka + +[kafka] +#The endpoint to the kafka server +uri = 192.168.1.191:9092 +#The topic on the kafka server +topic = metrics +#consumer group name +group = metric_group +#how many times to try when error occurs +max_retry = 1 +#wait time between tries when kafka goes down +wait_time = 1 +#use synchronized or asynchronized connection to kafka +async = False +#send messages in bulk or send messages one by one. +compact = False +#How many partitions this connection should listen messages on, this +#parameter is for reading from kafka. If listens on multiple partitions, +#For example, if the client should listen on partitions 1 and 3, then the +#configuration should look like the following: +# partitions = 1 +# partitions = 3 +#default to listen on partition 0. +partitions = 0 diff --git a/etc/monasca.ini b/etc/monasca.ini new file mode 100644 index 000000000..dcc038cb8 --- /dev/null +++ b/etc/monasca.ini @@ -0,0 +1,25 @@ +[DEFAULT] +name = monasca + +[pipeline:main] +# Add validator in the pipeline so the metrics messages can be validated. +pipeline = validator api + +[app:api] +paste.app_factory = monasca.api.server:api_app + +[filter:login] +use = egg: monasca_api#login + +[filter:inspector] +use = egg: monasca_api#inspector + +[filter:validator] +use = egg: monasca_api#metric_validator + +[server:main] +use = egg:gunicorn#main +host = 0.0.0.0 +port = 9090 +workers = 1 +proc_name = monasca diff --git a/monasca/__init__.py b/monasca/__init__.py new file mode 100644 index 000000000..e69de29bb diff --git a/monasca/api/__init__.py b/monasca/api/__init__.py new file mode 100644 index 000000000..e69de29bb diff --git a/monasca/api/monasca_api_v2.py b/monasca/api/monasca_api_v2.py new file mode 100644 index 000000000..89254fad4 --- /dev/null +++ b/monasca/api/monasca_api_v2.py @@ -0,0 +1,95 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from monasca.common import resource_api +from monasca.openstack.common import log + + +LOG = log.getLogger(__name__) + + +class V2API(object): + def __init__(self, global_conf): + LOG.debug('initializing V2API!') + self.global_conf = global_conf + + @resource_api.Restify('/v2.0/metrics/{id}') + def do_get_metrics(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/metrics/', method='post') + def do_post_metrics(self, req, res): + res.status = '501 Not Implemented' + + @resource_api.Restify('/{version_id}', method='get') + def do_get_version(self, req, res, version_id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/metrics/measurements') + def do_get_measurements(self, req, res): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/metrics/statistics') + def do_get_statistics(self, req, res): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/notification-methods', method='post') + def do_post_notification_methods(self, req, res): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/notification-methods/{id}', method='put') + def do_put_notification_methods(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/notification-methods/{id}', method='delete') + def do_delete_notification_methods(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/notification-methods/{id}') + def do_get_notification_methods(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms', method='post') + def do_post_alarms(self, req, res): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms/{id}', method='put') + def do_put_alarms(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms/{id}', method='patch') + def do_patch_alarms(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms/{id}', method='delete') + def do_delete_alarms(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms/', method='get') + def do_get_alarms(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms/{id}', method='get') + def do_get_alarm_by_id(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms/state-history') + def do_get_alarms_state_history(self, req, res, id): + res.status = '501 Not Implemented' + + @resource_api.Restify('/v2.0/alarms/{id}/state-history') + def do_get_alarm_state_history(self, req, res, id): + res.status = '501 Not Implemented' diff --git a/monasca/api/server.py b/monasca/api/server.py new file mode 100644 index 000000000..4181fed4a --- /dev/null +++ b/monasca/api/server.py @@ -0,0 +1,58 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from oslo.config import cfg +from stevedore import driver + +from monasca.common import resource_api +from monasca.openstack.common import log + +DISPATCHER_NAMESPACE = 'monasca.dispatcher' + + +cfg.CONF.register_opts( + [cfg.StrOpt('driver', default='kafka', + help='The name of the dispatcher for the api server'), + ], group="dispatcher") + +LOG = log.getLogger(__name__) + + +def api_app(conf): + + # Setup logs + log_levels = (cfg.CONF.default_log_levels) + cfg.set_defaults(log.log_opts, default_log_levels=log_levels) + + cfg.CONF(args=[], project='monasca') + log.setup('monasca') + + # Create the application + app = resource_api.ResourceAPI() + + # load the driver specified by dispatcher in the monasca.ini file + manager = driver.DriverManager(namespace=DISPATCHER_NAMESPACE, + name=cfg.CONF.dispatcher.driver, + invoke_on_load=True, + invoke_args=[conf]) + + LOG.debug('Dispatcher driver %s is loaded.' % cfg.CONF.dispatcher.driver) + + # add the driver to the application + app.add_route(None, manager.driver) + + LOG.debug('Dispatcher driver has been added to the routes!') + return app diff --git a/monasca/common/__init__.py b/monasca/common/__init__.py new file mode 100644 index 000000000..e69de29bb diff --git a/monasca/common/kafka_conn.py b/monasca/common/kafka_conn.py new file mode 100644 index 000000000..7d34498aa --- /dev/null +++ b/monasca/common/kafka_conn.py @@ -0,0 +1,223 @@ +# +# Copyright 2012-2013 eNovance +# +# Author: Julien Danjou +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from kafka import client +from kafka import common +from kafka import consumer +from kafka import producer +from oslo.config import cfg +from oslo.config import types +import time +try: + import ujson as json +except ImportError: + import json + +from monasca.openstack.common import log + + +OPTS = [ + cfg.StrOpt('uri', + help='Address to kafka server. For example: ' + 'uri=192.168.1.191:9092'), + cfg.StrOpt('topic', + default='event', + help='The topic that this collector will listen on.'), + cfg.StrOpt('group', + default='event_consumer', + help='The group name that this service belongs to.'), + cfg.IntOpt('wait_time', + default=1, + help='The wait time when no messages on kafka queue.'), + cfg.IntOpt('ack_time', + default=20, + help='The ack time back to kafka.'), + cfg.IntOpt('max_retry', + default=3, + help='The number of retry when there is a connection error.'), + cfg.BoolOpt('auto_commit', + default=False, + help='If automatically commmit when consume messages.'), + cfg.BoolOpt('async', + default=True, + help='The type of posting.'), + cfg.BoolOpt('compact', + default=True, + help=('Specify if the message received should be parsed.' + 'If True, message will not be parsed, otherwise ' + 'messages will be parsed.')), + cfg.MultiOpt('partitions', + item_type=types.Integer(), + default=[0], + help='The sleep time when no messages on kafka queue.'), + cfg.BoolOpt('drop_data', + default=False, + help=('Specify if received data should be simply dropped. ' + 'This parameter is only for testing purposes.')), +] + +cfg.CONF.register_opts(OPTS, group="kafka") + +LOG = log.getLogger(__name__) + + +class KafkaConnection(object): + + def __init__(self): + if not cfg.CONF.kafka.uri: + raise Exception('Kafka is not configured correctly! ' + 'Use configuration file to specify Kafka ' + 'uri, for example: ' + 'uri=192.168.1.191:9092') + + self.uri = cfg.CONF.kafka.uri + self.topic = cfg.CONF.kafka.topic + self.group = cfg.CONF.kafka.group + self.wait_time = cfg.CONF.kafka.wait_time + self.async = cfg.CONF.kafka.async + self.ack_time = cfg.CONF.kafka.ack_time + self.max_retry = cfg.CONF.kafka.max_retry + self.auto_commit = cfg.CONF.kafka.auto_commit + self.compact = cfg.CONF.kafka.compact + self.partitions = cfg.CONF.kafka.partitions + self.drop_data = cfg.CONF.kafka.drop_data + + self._client = None + self._consumer = None + self._producer = None + + LOG.debug('Kafka Connection initialized successfully!') + + def _init_client(self, wait_time=None): + for i in range(self.max_retry): + try: + # if there is a client instance, but _init_client is called + # again, most likely the connection has gone stale, close that + # connection and reconnect. + if self._client: + self._client.close() + + if not wait_time: + wait_time = self.wait_time + time.sleep(wait_time) + + self._client = client.KafkaClient(self.uri) + + # when a client is re-initialized, existing consumer should be + # reset as well. + self._consumer = None + self._producer = None + LOG.debug("Successfully connected to Kafka server at topic: " + "\"%s\" partitions %s" % (self.topic, + self.partitions)) + break + except common.KafkaUnavailableError: + LOG.error('Kafka server at %s is down.' % self.uri) + except common.LeaderNotAvailableError: + LOG.error('Kafka at %s has no leader available.' % self.uri) + except Exception: + LOG.error('Kafka at %s initialization failed.' % self.uri) + # Wait a bit and try again to get a client + time.sleep(self.wait_time) + + def _init_consumer(self): + try: + if not self._client: + self._init_client() + self._consumer = consumer.SimpleConsumer( + self._client, self.group, self.topic, + auto_commit=self.auto_commit, + partitions=self.partitions) + LOG.debug('Consumer was created successfully.') + except Exception: + self._consumer = None + LOG.exception('Kafka (%s) consumer can not be created.' % + self.uri) + + def _init_producer(self): + try: + if not self._client: + self._init_client() + self._producer = producer.SimpleProducer( + self._client, async=self.async, ack_timeout=self.ack_time) + LOG.debug('Producer was created successfully.') + except Exception: + self._producer = None + LOG.exception('Kafka (%s) producer can not be created.' % + self.uri) + + def commit(self): + if self._consumer and self.auto_commit: + self._consumer.commit() + + def close(self): + if self._client: + self._consumer = None + self._producer = None + self._client.close() + + def get_messages(self): + try: + if not self._consumer: + self._init_consumer() + + for message in self._consumer: + LOG.debug(message.message.value) + yield message + except Exception: + LOG.error('Error occurred while handling kafka messages.') + self._consumer = None + yield None + + def send_messages(self, messages): + LOG.debug('Prepare to send messages.') + if not messages or self.drop_data: + return 204 + + code = 400 + try: + if not self._producer: + self._init_producer() + + LOG.debug('Start sending messages to kafka.') + if self.compact: + self._producer.send_messages(self.topic, messages) + else: + data = json.loads(messages) + LOG.debug('Msg parsed successfully.') + if isinstance(data, list): + for item in data: + self._producer.send_messages( + self.topic, json.dumps(item)) + else: + self._producer.send_messages(self.topic, messages) + LOG.debug('Message posted successfully.') + code = 204 + except (common.KafkaUnavailableError, + common.LeaderNotAvailableError): + self._client = None + code = 503 + LOG.exception('Error occurred while posting data to ' + 'Kafka.') + except ValueError: + code = 406 + LOG.exception('Message %s is not valid json.' % messages) + except Exception: + code = 500 + LOG.exception('Unknown error.') + + return code \ No newline at end of file diff --git a/monasca/common/resource_api.py b/monasca/common/resource_api.py new file mode 100644 index 000000000..589de31dc --- /dev/null +++ b/monasca/common/resource_api.py @@ -0,0 +1,117 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import falcon +from falcon import api_helpers + +from monasca.openstack.common import log + + +RESOURCE_METHOD_FLAG = 'fab05a04-b861-4651-bd0c-9cb3eb9a6088' + +LOG = log.getLogger(__name__) + + +class Restify(object): + def __init__(self, path='', method='GET'): + if not path: + raise Exception('Path has to be specified.') + + if method.upper() not in falcon.HTTP_METHODS: + raise Exception('Invalid request method.') + self.path = path + self.method = method.upper() + + def __call__(self, func): + setattr(func, RESOURCE_METHOD_FLAG, self) + return func + + +class ResourceAPI(falcon.API): + + def add_route(self, uri_template, resource): + """Associates uri patterns with resource methods. + + A resource is an instance of a class that defines various methods + to handle http requests. + + Use this class to create applications which serve a standard + compliant ReSTful API. For example, you may have an API which manage + monitoring data, there can be multiple implementations of the API + using different technologies. One can use Mongodb, the other can use + Cassandra. To make the configuration of the application very easy, + each implementation provides a class with set of methods decorated + by class Restify, the application can simply using single entry + configuration to load different implementations. + + For example:: + + class ExampleResource(object): + @Restify(path='/path1/', method='post') + def func1(self, req, res): + pass + + @Restify(path='/path2/{id}/key/', method='get') + def func2(self, req, res, id): + pass + + def func3(self, req, res, id): + pass + + With the above class, the following code will add the class method + func1, func2 to handle post and get requests respectively, method + func3 won't be added to the routes.:: + + app.add_route(None, ExampleResource()) + + Args: + uri_template (url pattern): the url pattern which a client will + post a request against. If none, ResourceAPI will + automatically look up the decorated methods. + resource (instance): Object which represents an HTTP/REST + "resource". Falcon will pass requests to various decorated + methods to handle http requests. + """ + if not resource: + raise Exception('Not a valid resource') + + path_maps = {} + try: + if uri_template: + super(ResourceAPI, self).add_route(uri_template, resource) + else: + for attr in dir(resource): + method = getattr(resource, attr) + if callable(method) and hasattr(method, + RESOURCE_METHOD_FLAG): + flag = getattr(method, RESOURCE_METHOD_FLAG) + map = path_maps.get(flag.path) + if not map: + uri_fields, template = ( + api_helpers.compile_uri_template(flag.path)) + map = (template, {}) + path_maps[flag.path] = map + + new_method = api_helpers._wrap_with_hooks( + self._before, self._after, method) + map[1][flag.method] = new_method + + for item in path_maps: + self._routes.insert(0, (path_maps[item][0], + path_maps[item][1])) + except Exception: + LOG.exception('Error occurred while adding the resource') + LOG.debug(self._routes) \ No newline at end of file diff --git a/monasca/dispatcher/__init__.py b/monasca/dispatcher/__init__.py new file mode 100644 index 000000000..08f995ab7 --- /dev/null +++ b/monasca/dispatcher/__init__.py @@ -0,0 +1,29 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import abc +import six + + +@six.add_metaclass(abc.ABCMeta) +class Base(object): + + def __init__(self, conf): + self.conf = conf + + @abc.abstractmethod + def define_routes(self, app): + """Post metric data interface.""" diff --git a/monasca/dispatcher/kafka_dispatcher.py b/monasca/dispatcher/kafka_dispatcher.py new file mode 100644 index 000000000..811c584c7 --- /dev/null +++ b/monasca/dispatcher/kafka_dispatcher.py @@ -0,0 +1,41 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import falcon + +from monasca.api import monasca_api_v2 +from monasca.common import kafka_conn +from monasca.common import resource_api +from monasca.openstack.common import log + + +LOG = log.getLogger(__name__) + + +class KafkaDispatcher(monasca_api_v2.V2API): + def __init__(self, global_conf): + LOG.debug('initializing KafkaDispatcher!') + super(KafkaDispatcher, self).__init__(global_conf) + + self._kafka_conn = kafka_conn.KafkaConnection() + + @resource_api.Restify('/v2.0/metrics/', method='post') + def do_post_metrics(self, req, res): + LOG.debug('Getting the call.') + msg = req.stream.read() + + code = self._kafka_conn.send_messages(msg) + res.status = getattr(falcon, 'HTTP_' + str(code)) \ No newline at end of file diff --git a/monasca/locale/monasca.pot b/monasca/locale/monasca.pot new file mode 100644 index 000000000..65332a356 --- /dev/null +++ b/monasca/locale/monasca.pot @@ -0,0 +1,22 @@ +# Translations template for monasca. +# Copyright (C) 2014 ORGANIZATION +# This file is distributed under the same license as the marconi project. +# FIRST AUTHOR , 2014. +# +#, fuzzy +msgid "" +msgstr "" +"Project-Id-Version: monasca 2014.2.dev44.g366d9b5\n" +"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n" +"POT-Creation-Date: 2014-06-04 22:30+0200\n" +"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" +"Last-Translator: FULL NAME \n" +"Language-Team: LANGUAGE \n" +"MIME-Version: 1.0\n" +"Content-Type: text/plain; charset=utf-8\n" +"Content-Transfer-Encoding: 8bit\n" +"Generated-By: Babel 1.3\n" + +#: monasca/common/utils.py:48 +msgid "{0} is not a valid operation" +msgstr "" diff --git a/monasca/middleware/__init__.py b/monasca/middleware/__init__.py new file mode 100644 index 000000000..e69de29bb diff --git a/monasca/middleware/inspector.py b/monasca/middleware/inspector.py new file mode 100644 index 000000000..c104e553e --- /dev/null +++ b/monasca/middleware/inspector.py @@ -0,0 +1,51 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + + +class Inspector(object): + """The middleware that logs the request body and header + + This is a middleware for debug purposes. To enable this middleware, add + the following lines into the configuration file, for example: + + [pipeline:main] + pipeline = inspector api + + [filter:inspector] + use = egg: monasca_api_server#inspector + """ + def __init__(self, app, conf): + """Inspect each request + + :param app: OptionParser to use. If not sent one will be created. + :param conf: Override sys.argv; used in testing + """ + self.app = app + self.conf = conf + print('Inspect config:', self.conf) + + def __call__(self, environ, start_response): + + print('environ is ', environ) + return self.app(environ, start_response) + + +def filter_factory(global_conf, **local_conf): + + def login_filter(app): + return Inspector(app, local_conf) + + return login_filter diff --git a/monasca/middleware/login.py b/monasca/middleware/login.py new file mode 100644 index 000000000..d278d1cb1 --- /dev/null +++ b/monasca/middleware/login.py @@ -0,0 +1,47 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + + +class SimpleLogin(object): + """Example middleware that demostrates how a login middleware should work. + + In this example, the middleware checks if a request path starts with + string '/datapoints/', if it does, the request gets pass this + middleware, otherwise, a 401 response is returned. + """ + def __init__(self, app, conf): + self.app = app + self.conf = conf + + def __call__(self, environ, start_response): + # if request starts with /datapoints/, then let it go on. + # this login middle + if environ.get('PATH_INFO', '').startswith('/datapoints/'): + return self.app(environ, start_response) + # otherwise, send something else, request stops here. + else: + status = "401 Unauthorized" + response_headers = [("content-type", "text/plain")] + start_response(status, response_headers, "please login first") + return ['Please log in!'] + + +def filter_factory(global_conf, **local_conf): + + def login_filter(app): + return SimpleLogin(app, local_conf) + + return login_filter diff --git a/monasca/middleware/metric_validator.py b/monasca/middleware/metric_validator.py new file mode 100644 index 000000000..db6963269 --- /dev/null +++ b/monasca/middleware/metric_validator.py @@ -0,0 +1,125 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + + +import datetime +import StringIO +try: + import ujson as json +except ImportError: + import json + + +class MetricValidator(object): + """middleware that validate the metric input stream. + + This middleware checks if the input stream actually follows metric spec + and all the messages in the request has valid metric data. If the body + is valid json and compliant with the spec, then the request will forward + the request to the next in the pipeline, otherwise, it will reject the + request with response code of 400 or 406. + """ + def __init__(self, app, conf): + self.app = app + self.conf = conf + + def _is_valid_metric(self, metric): + """Validate a message + + The external message format is + { + "name":"name1", + "dimensions":{ + "key1":"value1", + "key2":"value2" + }, + "timestamp":1405630174, + "value":1.0 + } + + Once this is validated, the message needs to be transformed into + the following internal format: + + The current valid message format is as follows (interna): + { + "metric": {"something": "The metric as a JSON object"}, + "meta": { + "tenantId": "the tenant ID acquired", + "region": "the region that the metric was submitted under", + }, + "creation_time": "the time when the API received the metric", + } + """ + if (metric.get('name') and metric.get('dimensions') and + metric.get('timestamp') and metric.get('value')): + return True + else: + return False + + def __call__(self, env, start_response): + # if request starts with /datapoints/, then let it go on. + # this login middle + if (env.get('PATH_INFO', '').startswith('/v2.0/metrics') and + env.get('REQUEST_METHOD', '') == 'POST'): + # We only check the requests which are posting against metrics + # endpoint + try: + body = env['wsgi.input'].read() + metrics = json.loads(body) + # Do business logic validation here. + is_valid = True + if isinstance(metrics, list): + for metric in metrics: + if not self._is_valid_metric(metric): + is_valid = False + break + else: + is_valid = self._is_valid_metric(metrics) + + if is_valid: + # If the message is valid, then wrap it into this internal + # format. The tenantId should be available from the + # request since this should have been authenticated. + # ideally this transformation should be done somewhere + # else. For the sake of simplicity, do the simple one + # here to make the life a bit easier. + + # TODO(HP) Add logic to get region id from request header + # HTTP_X_SERVICE_CATALOG, then find endpoints, then region + region_id = None + msg = {'metric': metrics, + 'meta': {'tenantId': env.get('HTTP_X_PROJECT_ID'), + 'region': region_id}, + 'creation_time': datetime.datetime.now()} + env['wsgi.input'] = StringIO.StringIO(json.dumps(msg)) + return self.app(env, start_response) + except Exception: + pass + # It is either invalid or exceptioned out while parsing json + # we will send the request back with 400. + start_response("400 Bad Request", [], '') + return [] + else: + # not a metric post request, move on. + return self.app(env, start_response) + + +def filter_factory(global_conf, **local_conf): + + def validator_filter(app): + return MetricValidator(app, local_conf) + + return validator_filter diff --git a/monasca/openstack/__init__.py b/monasca/openstack/__init__.py new file mode 100644 index 000000000..e69de29bb diff --git a/monasca/openstack/common/__init__.py b/monasca/openstack/common/__init__.py new file mode 100644 index 000000000..d1223eaf7 --- /dev/null +++ b/monasca/openstack/common/__init__.py @@ -0,0 +1,17 @@ +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import six + + +six.add_move(six.MovedModule('mox', 'mox', 'mox3.mox')) diff --git a/monasca/openstack/common/eventlet_backdoor.py b/monasca/openstack/common/eventlet_backdoor.py new file mode 100644 index 000000000..838bbad98 --- /dev/null +++ b/monasca/openstack/common/eventlet_backdoor.py @@ -0,0 +1,145 @@ +# Copyright (c) 2012 OpenStack Foundation. +# Administrator of the National Aeronautics and Space Administration. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +from __future__ import print_function + +import errno +import gc +import os +import pprint +import socket +import sys +import traceback + +import eventlet +import eventlet.backdoor +import greenlet +from oslo.config import cfg + +from monasca.openstack.common.gettextutils import _LI +from monasca.openstack.common import log as logging + +help_for_backdoor_port = ( + "Acceptable values are 0, , and :, where 0 results " + "in listening on a random tcp port number; results in listening " + "on the specified port number (and not enabling backdoor if that port " + "is in use); and : results in listening on the smallest " + "unused port number within the specified range of port numbers. The " + "chosen port is displayed in the service's log file.") +eventlet_backdoor_opts = [ + cfg.StrOpt('backdoor_port', + help="Enable eventlet backdoor. %s" % help_for_backdoor_port) +] + +CONF = cfg.CONF +CONF.register_opts(eventlet_backdoor_opts) +LOG = logging.getLogger(__name__) + + +class EventletBackdoorConfigValueError(Exception): + def __init__(self, port_range, help_msg, ex): + msg = ('Invalid backdoor_port configuration %(range)s: %(ex)s. ' + '%(help)s' % + {'range': port_range, 'ex': ex, 'help': help_msg}) + super(EventletBackdoorConfigValueError, self).__init__(msg) + self.port_range = port_range + + +def _dont_use_this(): + print("Don't use this, just disconnect instead") + + +def _find_objects(t): + return [o for o in gc.get_objects() if isinstance(o, t)] + + +def _print_greenthreads(): + for i, gt in enumerate(_find_objects(greenlet.greenlet)): + print(i, gt) + traceback.print_stack(gt.gr_frame) + print() + + +def _print_nativethreads(): + for threadId, stack in sys._current_frames().items(): + print(threadId) + traceback.print_stack(stack) + print() + + +def _parse_port_range(port_range): + if ':' not in port_range: + start, end = port_range, port_range + else: + start, end = port_range.split(':', 1) + try: + start, end = int(start), int(end) + if end < start: + raise ValueError + return start, end + except ValueError as ex: + raise EventletBackdoorConfigValueError(port_range, ex, + help_for_backdoor_port) + + +def _listen(host, start_port, end_port, listen_func): + try_port = start_port + while True: + try: + return listen_func((host, try_port)) + except socket.error as exc: + if (exc.errno != errno.EADDRINUSE or + try_port >= end_port): + raise + try_port += 1 + + +def initialize_if_enabled(): + backdoor_locals = { + 'exit': _dont_use_this, # So we don't exit the entire process + 'quit': _dont_use_this, # So we don't exit the entire process + 'fo': _find_objects, + 'pgt': _print_greenthreads, + 'pnt': _print_nativethreads, + } + + if CONF.backdoor_port is None: + return None + + start_port, end_port = _parse_port_range(str(CONF.backdoor_port)) + + # NOTE(johannes): The standard sys.displayhook will print the value of + # the last expression and set it to __builtin__._, which overwrites + # the __builtin__._ that gettext sets. Let's switch to using pprint + # since it won't interact poorly with gettext, and it's easier to + # read the output too. + def displayhook(val): + if val is not None: + pprint.pprint(val) + sys.displayhook = displayhook + + sock = _listen('localhost', start_port, end_port, eventlet.listen) + + # In the case of backdoor port being zero, a port number is assigned by + # listen(). In any case, pull the port number out here. + port = sock.getsockname()[1] + LOG.info( + _LI('Eventlet backdoor listening on %(port)s for process %(pid)d') % + {'port': port, 'pid': os.getpid()} + ) + eventlet.spawn_n(eventlet.backdoor.backdoor_server, sock, + locals=backdoor_locals) + return port diff --git a/monasca/openstack/common/excutils.py b/monasca/openstack/common/excutils.py new file mode 100644 index 000000000..80df3f9ae --- /dev/null +++ b/monasca/openstack/common/excutils.py @@ -0,0 +1,113 @@ +# Copyright 2011 OpenStack Foundation. +# Copyright 2012, Red Hat, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Exception related utilities. +""" + +import logging +import sys +import time +import traceback + +import six + +from monasca.openstack.common.gettextutils import _LE + + +class save_and_reraise_exception(object): + """Save current exception, run some code and then re-raise. + + In some cases the exception context can be cleared, resulting in None + being attempted to be re-raised after an exception handler is run. This + can happen when eventlet switches greenthreads or when running an + exception handler, code raises and catches an exception. In both + cases the exception context will be cleared. + + To work around this, we save the exception state, run handler code, and + then re-raise the original exception. If another exception occurs, the + saved exception is logged and the new exception is re-raised. + + In some cases the caller may not want to re-raise the exception, and + for those circumstances this context provides a reraise flag that + can be used to suppress the exception. For example:: + + except Exception: + with save_and_reraise_exception() as ctxt: + decide_if_need_reraise() + if not should_be_reraised: + ctxt.reraise = False + + If another exception occurs and reraise flag is False, + the saved exception will not be logged. + + If the caller wants to raise new exception during exception handling + he/she sets reraise to False initially with an ability to set it back to + True if needed:: + + except Exception: + with save_and_reraise_exception(reraise=False) as ctxt: + [if statements to determine whether to raise a new exception] + # Not raising a new exception, so reraise + ctxt.reraise = True + """ + def __init__(self, reraise=True): + self.reraise = reraise + + def __enter__(self): + self.type_, self.value, self.tb, = sys.exc_info() + return self + + def __exit__(self, exc_type, exc_val, exc_tb): + if exc_type is not None: + if self.reraise: + logging.error(_LE('Original exception being dropped: %s'), + traceback.format_exception(self.type_, + self.value, + self.tb)) + return False + if self.reraise: + six.reraise(self.type_, self.value, self.tb) + + +def forever_retry_uncaught_exceptions(infunc): + def inner_func(*args, **kwargs): + last_log_time = 0 + last_exc_message = None + exc_count = 0 + while True: + try: + return infunc(*args, **kwargs) + except Exception as exc: + this_exc_message = six.u(str(exc)) + if this_exc_message == last_exc_message: + exc_count += 1 + else: + exc_count = 1 + # Do not log any more frequently than once a minute unless + # the exception message changes + cur_time = int(time.time()) + if (cur_time - last_log_time > 60 or + this_exc_message != last_exc_message): + logging.exception( + _LE('Unexpected exception occurred %d time(s)... ' + 'retrying.') % exc_count) + last_log_time = cur_time + last_exc_message = this_exc_message + exc_count = 0 + # This should be a very rare event. In case it isn't, do + # a sleep. + time.sleep(1) + return inner_func diff --git a/monasca/openstack/common/fileutils.py b/monasca/openstack/common/fileutils.py new file mode 100644 index 000000000..37cfbf227 --- /dev/null +++ b/monasca/openstack/common/fileutils.py @@ -0,0 +1,146 @@ +# Copyright 2011 OpenStack Foundation. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import contextlib +import errno +import os +import tempfile + +from monasca.openstack.common import excutils +from monasca.openstack.common import log as logging + +LOG = logging.getLogger(__name__) + +_FILE_CACHE = {} + + +def ensure_tree(path): + """Create a directory (and any ancestor directories required) + + :param path: Directory to create + """ + try: + os.makedirs(path) + except OSError as exc: + if exc.errno == errno.EEXIST: + if not os.path.isdir(path): + raise + else: + raise + + +def read_cached_file(filename, force_reload=False): + """Read from a file if it has been modified. + + :param force_reload: Whether to reload the file. + :returns: A tuple with a boolean specifying if the data is fresh + or not. + """ + global _FILE_CACHE + + if force_reload: + delete_cached_file(filename) + + reloaded = False + mtime = os.path.getmtime(filename) + cache_info = _FILE_CACHE.setdefault(filename, {}) + + if not cache_info or mtime > cache_info.get('mtime', 0): + LOG.debug("Reloading cached file %s" % filename) + with open(filename) as fap: + cache_info['data'] = fap.read() + cache_info['mtime'] = mtime + reloaded = True + return (reloaded, cache_info['data']) + + +def delete_cached_file(filename): + """Delete cached file if present. + + :param filename: filename to delete + """ + global _FILE_CACHE + + if filename in _FILE_CACHE: + del _FILE_CACHE[filename] + + +def delete_if_exists(path, remove=os.unlink): + """Delete a file, but ignore file not found error. + + :param path: File to delete + :param remove: Optional function to remove passed path + """ + + try: + remove(path) + except OSError as e: + if e.errno != errno.ENOENT: + raise + + +@contextlib.contextmanager +def remove_path_on_error(path, remove=delete_if_exists): + """Protect code that wants to operate on PATH atomically. + Any exception will cause PATH to be removed. + + :param path: File to work with + :param remove: Optional function to remove passed path + """ + + try: + yield + except Exception: + with excutils.save_and_reraise_exception(): + remove(path) + + +def file_open(*args, **kwargs): + """Open file + + see built-in open() documentation for more details + + Note: The reason this is kept in a separate module is to easily + be able to provide a stub module that doesn't alter system + state at all (for unit tests) + """ + return open(*args, **kwargs) + + +def write_to_tempfile(content, path=None, suffix='', prefix='tmp'): + """Create temporary file or use existing file. + + This util is needed for creating temporary file with + specified content, suffix and prefix. If path is not None, + it will be used for writing content. If the path doesn't + exist it'll be created. + + :param content: content for temporary file. + :param path: same as parameter 'dir' for mkstemp + :param suffix: same as parameter 'suffix' for mkstemp + :param prefix: same as parameter 'prefix' for mkstemp + + For example: it can be used in database tests for creating + configuration files. + """ + if path: + ensure_tree(path) + + (fd, path) = tempfile.mkstemp(suffix=suffix, dir=path, prefix=prefix) + try: + os.write(fd, content) + finally: + os.close(fd) + return path diff --git a/monasca/openstack/common/fixture/__init__.py b/monasca/openstack/common/fixture/__init__.py new file mode 100644 index 000000000..e69de29bb diff --git a/monasca/openstack/common/fixture/config.py b/monasca/openstack/common/fixture/config.py new file mode 100644 index 000000000..9489b85a5 --- /dev/null +++ b/monasca/openstack/common/fixture/config.py @@ -0,0 +1,85 @@ +# +# Copyright 2013 Mirantis, Inc. +# Copyright 2013 OpenStack Foundation +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import fixtures +from oslo.config import cfg +import six + + +class Config(fixtures.Fixture): + """Allows overriding configuration settings for the test. + + `conf` will be reset on cleanup. + + """ + + def __init__(self, conf=cfg.CONF): + self.conf = conf + + def setUp(self): + super(Config, self).setUp() + # NOTE(morganfainberg): unregister must be added to cleanup before + # reset is because cleanup works in reverse order of registered items, + # and a reset must occur before unregistering options can occur. + self.addCleanup(self._unregister_config_opts) + self.addCleanup(self.conf.reset) + self._registered_config_opts = {} + + def config(self, **kw): + """Override configuration values. + + The keyword arguments are the names of configuration options to + override and their values. + + If a `group` argument is supplied, the overrides are applied to + the specified configuration option group, otherwise the overrides + are applied to the ``default`` group. + + """ + + group = kw.pop('group', None) + for k, v in six.iteritems(kw): + self.conf.set_override(k, v, group) + + def _unregister_config_opts(self): + for group in self._registered_config_opts: + self.conf.unregister_opts(self._registered_config_opts[group], + group=group) + + def register_opt(self, opt, group=None): + """Register a single option for the test run. + + Options registered in this manner will automatically be unregistered + during cleanup. + + If a `group` argument is supplied, it will register the new option + to that group, otherwise the option is registered to the ``default`` + group. + """ + self.conf.register_opt(opt, group=group) + self._registered_config_opts.setdefault(group, set()).add(opt) + + def register_opts(self, opts, group=None): + """Register multiple options for the test run. + + This works in the same manner as register_opt() but takes a list of + options as the first argument. All arguments will be registered to the + same group if the ``group`` argument is supplied, otherwise all options + will be registered to the ``default`` group. + """ + for opt in opts: + self.register_opt(opt, group=group) diff --git a/monasca/openstack/common/fixture/lockutils.py b/monasca/openstack/common/fixture/lockutils.py new file mode 100644 index 000000000..c176bc187 --- /dev/null +++ b/monasca/openstack/common/fixture/lockutils.py @@ -0,0 +1,51 @@ +# Copyright 2011 OpenStack Foundation. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import fixtures + +from monasca.openstack.common import lockutils + + +class LockFixture(fixtures.Fixture): + """External locking fixture. + + This fixture is basically an alternative to the synchronized decorator with + the external flag so that tearDowns and addCleanups will be included in + the lock context for locking between tests. The fixture is recommended to + be the first line in a test method, like so:: + + def test_method(self): + self.useFixture(LockFixture) + ... + + or the first line in setUp if all the test methods in the class are + required to be serialized. Something like:: + + class TestCase(testtools.testcase): + def setUp(self): + self.useFixture(LockFixture) + super(TestCase, self).setUp() + ... + + This is because addCleanups are put on a LIFO queue that gets run after the + test method exits. (either by completing or raising an exception) + """ + def __init__(self, name, lock_file_prefix=None): + self.mgr = lockutils.lock(name, lock_file_prefix, True) + + def setUp(self): + super(LockFixture, self).setUp() + self.addCleanup(self.mgr.__exit__, None, None, None) + self.lock = self.mgr.__enter__() diff --git a/monasca/openstack/common/fixture/logging.py b/monasca/openstack/common/fixture/logging.py new file mode 100644 index 000000000..3823a0355 --- /dev/null +++ b/monasca/openstack/common/fixture/logging.py @@ -0,0 +1,34 @@ +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import fixtures + + +def get_logging_handle_error_fixture(): + """returns a fixture to make logging raise formatting exceptions. + + Usage: + self.useFixture(logging.get_logging_handle_error_fixture()) + """ + return fixtures.MonkeyPatch('logging.Handler.handleError', + _handleError) + + +def _handleError(self, record): + """Monkey patch for logging.Handler.handleError. + + The default handleError just logs the error to stderr but we want + the option of actually raising an exception. + """ + raise diff --git a/monasca/openstack/common/fixture/mockpatch.py b/monasca/openstack/common/fixture/mockpatch.py new file mode 100644 index 000000000..ab2dc0216 --- /dev/null +++ b/monasca/openstack/common/fixture/mockpatch.py @@ -0,0 +1,62 @@ +# Copyright 2010 United States Government as represented by the +# Administrator of the National Aeronautics and Space Administration. +# Copyright 2013 Hewlett-Packard Development Company, L.P. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +############################################################################## +############################################################################## +# +# DO NOT MODIFY THIS FILE +# +# This file is being graduated to the oslotest library. Please make all +# changes there, and only backport critical fixes here. - dhellmann +# +############################################################################## +############################################################################## + +import fixtures +import mock + + +class PatchObject(fixtures.Fixture): + """Deal with code around mock.""" + + def __init__(self, obj, attr, new=mock.DEFAULT, **kwargs): + self.obj = obj + self.attr = attr + self.kwargs = kwargs + self.new = new + + def setUp(self): + super(PatchObject, self).setUp() + _p = mock.patch.object(self.obj, self.attr, self.new, **self.kwargs) + self.mock = _p.start() + self.addCleanup(_p.stop) + + +class Patch(fixtures.Fixture): + + """Deal with code around mock.patch.""" + + def __init__(self, obj, new=mock.DEFAULT, **kwargs): + self.obj = obj + self.kwargs = kwargs + self.new = new + + def setUp(self): + super(Patch, self).setUp() + _p = mock.patch(self.obj, self.new, **self.kwargs) + self.mock = _p.start() + self.addCleanup(_p.stop) diff --git a/monasca/openstack/common/fixture/moxstubout.py b/monasca/openstack/common/fixture/moxstubout.py new file mode 100644 index 000000000..d92c9626d --- /dev/null +++ b/monasca/openstack/common/fixture/moxstubout.py @@ -0,0 +1,43 @@ +# Copyright 2010 United States Government as represented by the +# Administrator of the National Aeronautics and Space Administration. +# Copyright 2013 Hewlett-Packard Development Company, L.P. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +############################################################################## +############################################################################## +# +# DO NOT MODIFY THIS FILE +# +# This file is being graduated to the oslotest library. Please make all +# changes there, and only backport critical fixes here. - dhellmann +# +############################################################################## +############################################################################## + +import fixtures +from six.moves import mox + + +class MoxStubout(fixtures.Fixture): + """Deal with code around mox and stubout as a fixture.""" + + def setUp(self): + super(MoxStubout, self).setUp() + # emulate some of the mox stuff, we can't use the metaclass + # because it screws with our generators + self.mox = mox.Mox() + self.stubs = self.mox.stubs + self.addCleanup(self.mox.UnsetStubs) + self.addCleanup(self.mox.VerifyAll) diff --git a/monasca/openstack/common/gettextutils.py b/monasca/openstack/common/gettextutils.py new file mode 100644 index 000000000..a4817de7a --- /dev/null +++ b/monasca/openstack/common/gettextutils.py @@ -0,0 +1,479 @@ +# Copyright 2012 Red Hat, Inc. +# Copyright 2013 IBM Corp. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +gettext for openstack-common modules. + +Usual usage in an openstack.common module: + + from monasca.openstack.common.gettextutils import _ +""" + +import copy +import gettext +import locale +from logging import handlers +import os + +from babel import localedata +import six + +_AVAILABLE_LANGUAGES = {} + +# FIXME(dhellmann): Remove this when moving to oslo.i18n. +USE_LAZY = False + + +class TranslatorFactory(object): + """Create translator functions + """ + + def __init__(self, domain, localedir=None): + """Establish a set of translation functions for the domain. + + :param domain: Name of translation domain, + specifying a message catalog. + :type domain: str + :param lazy: Delays translation until a message is emitted. + Defaults to False. + :type lazy: Boolean + :param localedir: Directory with translation catalogs. + :type localedir: str + """ + self.domain = domain + if localedir is None: + localedir = os.environ.get(domain.upper() + '_LOCALEDIR') + self.localedir = localedir + + def _make_translation_func(self, domain=None): + """Return a new translation function ready for use. + + Takes into account whether or not lazy translation is being + done. + + The domain can be specified to override the default from the + factory, but the localedir from the factory is always used + because we assume the log-level translation catalogs are + installed in the same directory as the main application + catalog. + + """ + if domain is None: + domain = self.domain + t = gettext.translation(domain, + localedir=self.localedir, + fallback=True) + # Use the appropriate method of the translation object based + # on the python version. + m = t.gettext if six.PY3 else t.ugettext + + def f(msg): + """oslo.i18n.gettextutils translation function.""" + if USE_LAZY: + return Message(msg, domain=domain) + return m(msg) + return f + + @property + def primary(self): + "The default translation function." + return self._make_translation_func() + + def _make_log_translation_func(self, level): + return self._make_translation_func(self.domain + '-log-' + level) + + @property + def log_info(self): + "Translate info-level log messages." + return self._make_log_translation_func('info') + + @property + def log_warning(self): + "Translate warning-level log messages." + return self._make_log_translation_func('warning') + + @property + def log_error(self): + "Translate error-level log messages." + return self._make_log_translation_func('error') + + @property + def log_critical(self): + "Translate critical-level log messages." + return self._make_log_translation_func('critical') + + +# NOTE(dhellmann): When this module moves out of the incubator into +# oslo.i18n, these global variables can be moved to an integration +# module within each application. + +# Create the global translation functions. +_translators = TranslatorFactory('monasca') + +# The primary translation function using the well-known name "_" +_ = _translators.primary + +# Translators for log levels. +# +# The abbreviated names are meant to reflect the usual use of a short +# name like '_'. The "L" is for "log" and the other letter comes from +# the level. +_LI = _translators.log_info +_LW = _translators.log_warning +_LE = _translators.log_error +_LC = _translators.log_critical + +# NOTE(dhellmann): End of globals that will move to the application's +# integration module. + + +def enable_lazy(): + """Convenience function for configuring _() to use lazy gettext + + Call this at the start of execution to enable the gettextutils._ + function to use lazy gettext functionality. This is useful if + your project is importing _ directly instead of using the + gettextutils.install() way of importing the _ function. + """ + global USE_LAZY + USE_LAZY = True + + +def install(domain): + """Install a _() function using the given translation domain. + + Given a translation domain, install a _() function using gettext's + install() function. + + The main difference from gettext.install() is that we allow + overriding the default localedir (e.g. /usr/share/locale) using + a translation-domain-specific environment variable (e.g. + NOVA_LOCALEDIR). + + Note that to enable lazy translation, enable_lazy must be + called. + + :param domain: the translation domain + """ + from six import moves + tf = TranslatorFactory(domain) + moves.builtins.__dict__['_'] = tf.primary + + +class Message(six.text_type): + """A Message object is a unicode object that can be translated. + + Translation of Message is done explicitly using the translate() method. + For all non-translation intents and purposes, a Message is simply unicode, + and can be treated as such. + """ + + def __new__(cls, msgid, msgtext=None, params=None, + domain='monasca', *args): + """Create a new Message object. + + In order for translation to work gettext requires a message ID, this + msgid will be used as the base unicode text. It is also possible + for the msgid and the base unicode text to be different by passing + the msgtext parameter. + """ + # If the base msgtext is not given, we use the default translation + # of the msgid (which is in English) just in case the system locale is + # not English, so that the base text will be in that locale by default. + if not msgtext: + msgtext = Message._translate_msgid(msgid, domain) + # We want to initialize the parent unicode with the actual object that + # would have been plain unicode if 'Message' was not enabled. + msg = super(Message, cls).__new__(cls, msgtext) + msg.msgid = msgid + msg.domain = domain + msg.params = params + return msg + + def translate(self, desired_locale=None): + """Translate this message to the desired locale. + + :param desired_locale: The desired locale to translate the message to, + if no locale is provided the message will be + translated to the system's default locale. + + :returns: the translated message in unicode + """ + + translated_message = Message._translate_msgid(self.msgid, + self.domain, + desired_locale) + if self.params is None: + # No need for more translation + return translated_message + + # This Message object may have been formatted with one or more + # Message objects as substitution arguments, given either as a single + # argument, part of a tuple, or as one or more values in a dictionary. + # When translating this Message we need to translate those Messages too + translated_params = _translate_args(self.params, desired_locale) + + translated_message = translated_message % translated_params + + return translated_message + + @staticmethod + def _translate_msgid(msgid, domain, desired_locale=None): + if not desired_locale: + system_locale = locale.getdefaultlocale() + # If the system locale is not available to the runtime use English + if not system_locale[0]: + desired_locale = 'en_US' + else: + desired_locale = system_locale[0] + + locale_dir = os.environ.get(domain.upper() + '_LOCALEDIR') + lang = gettext.translation(domain, + localedir=locale_dir, + languages=[desired_locale], + fallback=True) + if six.PY3: + translator = lang.gettext + else: + translator = lang.ugettext + + translated_message = translator(msgid) + return translated_message + + def __mod__(self, other): + # When we mod a Message we want the actual operation to be performed + # by the parent class (i.e. unicode()), the only thing we do here is + # save the original msgid and the parameters in case of a translation + params = self._sanitize_mod_params(other) + unicode_mod = super(Message, self).__mod__(params) + modded = Message(self.msgid, + msgtext=unicode_mod, + params=params, + domain=self.domain) + return modded + + def _sanitize_mod_params(self, other): + """Sanitize the object being modded with this Message. + + - Add support for modding 'None' so translation supports it + - Trim the modded object, which can be a large dictionary, to only + those keys that would actually be used in a translation + - Snapshot the object being modded, in case the message is + translated, it will be used as it was when the Message was created + """ + if other is None: + params = (other,) + elif isinstance(other, dict): + # Merge the dictionaries + # Copy each item in case one does not support deep copy. + params = {} + if isinstance(self.params, dict): + for key, val in self.params.items(): + params[key] = self._copy_param(val) + for key, val in other.items(): + params[key] = self._copy_param(val) + else: + params = self._copy_param(other) + return params + + def _copy_param(self, param): + try: + return copy.deepcopy(param) + except Exception: + # Fallback to casting to unicode this will handle the + # python code-like objects that can't be deep-copied + return six.text_type(param) + + def __add__(self, other): + msg = _('Message objects do not support addition.') + raise TypeError(msg) + + def __radd__(self, other): + return self.__add__(other) + + if six.PY2: + def __str__(self): + # NOTE(luisg): Logging in python 2.6 tries to str() log records, + # and it expects specifically a UnicodeError in order to proceed. + msg = _('Message objects do not support str() because they may ' + 'contain non-ascii characters. ' + 'Please use unicode() or translate() instead.') + raise UnicodeError(msg) + + +def get_available_languages(domain): + """Lists the available languages for the given translation domain. + + :param domain: the domain to get languages for + """ + if domain in _AVAILABLE_LANGUAGES: + return copy.copy(_AVAILABLE_LANGUAGES[domain]) + + localedir = '%s_LOCALEDIR' % domain.upper() + find = lambda x: gettext.find(domain, + localedir=os.environ.get(localedir), + languages=[x]) + + # NOTE(mrodden): en_US should always be available (and first in case + # order matters) since our in-line message strings are en_US + language_list = ['en_US'] + # NOTE(luisg): Babel <1.0 used a function called list(), which was + # renamed to locale_identifiers() in >=1.0, the requirements master list + # requires >=0.9.6, uncapped, so defensively work with both. We can remove + # this check when the master list updates to >=1.0, and update all projects + list_identifiers = (getattr(localedata, 'list', None) or + getattr(localedata, 'locale_identifiers')) + locale_identifiers = list_identifiers() + + for i in locale_identifiers: + if find(i) is not None: + language_list.append(i) + + # NOTE(luisg): Babel>=1.0,<1.3 has a bug where some OpenStack supported + # locales (e.g. 'zh_CN', and 'zh_TW') aren't supported even though they + # are perfectly legitimate locales: + # https://github.com/mitsuhiko/babel/issues/37 + # In Babel 1.3 they fixed the bug and they support these locales, but + # they are still not explicitly "listed" by locale_identifiers(). + # That is why we add the locales here explicitly if necessary so that + # they are listed as supported. + aliases = {'zh': 'zh_CN', + 'zh_Hant_HK': 'zh_HK', + 'zh_Hant': 'zh_TW', + 'fil': 'tl_PH'} + for (locale_, alias) in six.iteritems(aliases): + if locale_ in language_list and alias not in language_list: + language_list.append(alias) + + _AVAILABLE_LANGUAGES[domain] = language_list + return copy.copy(language_list) + + +def translate(obj, desired_locale=None): + """Gets the translated unicode representation of the given object. + + If the object is not translatable it is returned as-is. + If the locale is None the object is translated to the system locale. + + :param obj: the object to translate + :param desired_locale: the locale to translate the message to, if None the + default system locale will be used + :returns: the translated object in unicode, or the original object if + it could not be translated + """ + message = obj + if not isinstance(message, Message): + # If the object to translate is not already translatable, + # let's first get its unicode representation + message = six.text_type(obj) + if isinstance(message, Message): + # Even after unicoding() we still need to check if we are + # running with translatable unicode before translating + return message.translate(desired_locale) + return obj + + +def _translate_args(args, desired_locale=None): + """Translates all the translatable elements of the given arguments object. + + This method is used for translating the translatable values in method + arguments which include values of tuples or dictionaries. + If the object is not a tuple or a dictionary the object itself is + translated if it is translatable. + + If the locale is None the object is translated to the system locale. + + :param args: the args to translate + :param desired_locale: the locale to translate the args to, if None the + default system locale will be used + :returns: a new args object with the translated contents of the original + """ + if isinstance(args, tuple): + return tuple(translate(v, desired_locale) for v in args) + if isinstance(args, dict): + translated_dict = {} + for (k, v) in six.iteritems(args): + translated_v = translate(v, desired_locale) + translated_dict[k] = translated_v + return translated_dict + return translate(args, desired_locale) + + +class TranslationHandler(handlers.MemoryHandler): + """Handler that translates records before logging them. + + The TranslationHandler takes a locale and a target logging.Handler object + to forward LogRecord objects to after translating them. This handler + depends on Message objects being logged, instead of regular strings. + + The handler can be configured declaratively in the logging.conf as follows: + + [handlers] + keys = translatedlog, translator + + [handler_translatedlog] + class = handlers.WatchedFileHandler + args = ('/var/log/api-localized.log',) + formatter = context + + [handler_translator] + class = openstack.common.log.TranslationHandler + target = translatedlog + args = ('zh_CN',) + + If the specified locale is not available in the system, the handler will + log in the default locale. + """ + + def __init__(self, locale=None, target=None): + """Initialize a TranslationHandler + + :param locale: locale to use for translating messages + :param target: logging.Handler object to forward + LogRecord objects to after translation + """ + # NOTE(luisg): In order to allow this handler to be a wrapper for + # other handlers, such as a FileHandler, and still be able to + # configure it using logging.conf, this handler has to extend + # MemoryHandler because only the MemoryHandlers' logging.conf + # parsing is implemented such that it accepts a target handler. + handlers.MemoryHandler.__init__(self, capacity=0, target=target) + self.locale = locale + + def setFormatter(self, fmt): + self.target.setFormatter(fmt) + + def emit(self, record): + # We save the message from the original record to restore it + # after translation, so other handlers are not affected by this + original_msg = record.msg + original_args = record.args + + try: + self._translate_and_log_record(record) + finally: + record.msg = original_msg + record.args = original_args + + def _translate_and_log_record(self, record): + record.msg = translate(record.msg, self.locale) + + # In addition to translating the message, we also need to translate + # arguments that were passed to the log method that were not part + # of the main message e.g., log.info(_('Some message %s'), this_one)) + record.args = _translate_args(record.args, self.locale) + + self.target.emit(record) diff --git a/monasca/openstack/common/importutils.py b/monasca/openstack/common/importutils.py new file mode 100644 index 000000000..807c2f5c6 --- /dev/null +++ b/monasca/openstack/common/importutils.py @@ -0,0 +1,73 @@ +# Copyright 2011 OpenStack Foundation. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Import related utilities and helper functions. +""" + +import sys +import traceback + + +def import_class(import_str): + """Returns a class from a string including module and class.""" + mod_str, _sep, class_str = import_str.rpartition('.') + __import__(mod_str) + try: + return getattr(sys.modules[mod_str], class_str) + except AttributeError: + raise ImportError('Class %s cannot be found (%s)' % + (class_str, + traceback.format_exception(*sys.exc_info()))) + + +def import_object(import_str, *args, **kwargs): + """Import a class and return an instance of it.""" + return import_class(import_str)(*args, **kwargs) + + +def import_object_ns(name_space, import_str, *args, **kwargs): + """Tries to import object from default namespace. + + Imports a class and return an instance of it, first by trying + to find the class in a default namespace, then failing back to + a full path if not found in the default namespace. + """ + import_value = "%s.%s" % (name_space, import_str) + try: + return import_class(import_value)(*args, **kwargs) + except ImportError: + return import_class(import_str)(*args, **kwargs) + + +def import_module(import_str): + """Import a module.""" + __import__(import_str) + return sys.modules[import_str] + + +def import_versioned_module(version, submodule=None): + module = 'monasca.v%s' % version + if submodule: + module = '.'.join((module, submodule)) + return import_module(module) + + +def try_import(import_str, default=None): + """Try to import a module and if it fails return default.""" + try: + return import_module(import_str) + except ImportError: + return default diff --git a/monasca/openstack/common/jsonutils.py b/monasca/openstack/common/jsonutils.py new file mode 100644 index 000000000..d2ed4e98b --- /dev/null +++ b/monasca/openstack/common/jsonutils.py @@ -0,0 +1,202 @@ +# Copyright 2010 United States Government as represented by the +# Administrator of the National Aeronautics and Space Administration. +# Copyright 2011 Justin Santa Barbara +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +''' +JSON related utilities. + +This module provides a few things: + + 1) A handy function for getting an object down to something that can be + JSON serialized. See to_primitive(). + + 2) Wrappers around loads() and dumps(). The dumps() wrapper will + automatically use to_primitive() for you if needed. + + 3) This sets up anyjson to use the loads() and dumps() wrappers if anyjson + is available. +''' + + +import codecs +import datetime +import functools +import inspect +import itertools +import sys + +is_simplejson = False +if sys.version_info < (2, 7): + # On Python <= 2.6, json module is not C boosted, so try to use + # simplejson module if available + try: + import simplejson as json + # NOTE(mriedem): Make sure we have a new enough version of simplejson + # to support the namedobject_as_tuple argument. This can be removed + # in the Kilo release when python 2.6 support is dropped. + if 'namedtuple_as_object' in inspect.getargspec(json.dumps).args: + is_simplejson = True + else: + import json + except ImportError: + import json +else: + import json + +import six +import six.moves.xmlrpc_client as xmlrpclib + +from monasca.openstack.common import gettextutils +from monasca.openstack.common import importutils +from monasca.openstack.common import strutils +from monasca.openstack.common import timeutils + +netaddr = importutils.try_import("netaddr") + +_nasty_type_tests = [inspect.ismodule, inspect.isclass, inspect.ismethod, + inspect.isfunction, inspect.isgeneratorfunction, + inspect.isgenerator, inspect.istraceback, inspect.isframe, + inspect.iscode, inspect.isbuiltin, inspect.isroutine, + inspect.isabstract] + +_simple_types = (six.string_types + six.integer_types + + (type(None), bool, float)) + + +def to_primitive(value, convert_instances=False, convert_datetime=True, + level=0, max_depth=3): + """Convert a complex object into primitives. + + Handy for JSON serialization. We can optionally handle instances, + but since this is a recursive function, we could have cyclical + data structures. + + To handle cyclical data structures we could track the actual objects + visited in a set, but not all objects are hashable. Instead we just + track the depth of the object inspections and don't go too deep. + + Therefore, convert_instances=True is lossy ... be aware. + + """ + # handle obvious types first - order of basic types determined by running + # full tests on nova project, resulting in the following counts: + # 572754 + # 460353 + # 379632 + # 274610 + # 199918 + # 114200 + # 51817 + # 26164 + # 6491 + # 283 + # 19 + if isinstance(value, _simple_types): + return value + + if isinstance(value, datetime.datetime): + if convert_datetime: + return timeutils.strtime(value) + else: + return value + + # value of itertools.count doesn't get caught by nasty_type_tests + # and results in infinite loop when list(value) is called. + if type(value) == itertools.count: + return six.text_type(value) + + # FIXME(vish): Workaround for LP bug 852095. Without this workaround, + # tests that raise an exception in a mocked method that + # has a @wrap_exception with a notifier will fail. If + # we up the dependency to 0.5.4 (when it is released) we + # can remove this workaround. + if getattr(value, '__module__', None) == 'mox': + return 'mock' + + if level > max_depth: + return '?' + + # The try block may not be necessary after the class check above, + # but just in case ... + try: + recursive = functools.partial(to_primitive, + convert_instances=convert_instances, + convert_datetime=convert_datetime, + level=level, + max_depth=max_depth) + if isinstance(value, dict): + return dict((k, recursive(v)) for k, v in six.iteritems(value)) + elif isinstance(value, (list, tuple)): + return [recursive(lv) for lv in value] + + # It's not clear why xmlrpclib created their own DateTime type, but + # for our purposes, make it a datetime type which is explicitly + # handled + if isinstance(value, xmlrpclib.DateTime): + value = datetime.datetime(*tuple(value.timetuple())[:6]) + + if convert_datetime and isinstance(value, datetime.datetime): + return timeutils.strtime(value) + elif isinstance(value, gettextutils.Message): + return value.data + elif hasattr(value, 'iteritems'): + return recursive(dict(value.iteritems()), level=level + 1) + elif hasattr(value, '__iter__'): + return recursive(list(value)) + elif convert_instances and hasattr(value, '__dict__'): + # Likely an instance of something. Watch for cycles. + # Ignore class member vars. + return recursive(value.__dict__, level=level + 1) + elif netaddr and isinstance(value, netaddr.IPAddress): + return six.text_type(value) + else: + if any(test(value) for test in _nasty_type_tests): + return six.text_type(value) + return value + except TypeError: + # Class objects are tricky since they may define something like + # __iter__ defined but it isn't callable as list(). + return six.text_type(value) + + +def dumps(value, default=to_primitive, **kwargs): + if is_simplejson: + kwargs['namedtuple_as_object'] = False + return json.dumps(value, default=default, **kwargs) + + +def dump(obj, fp, *args, **kwargs): + if is_simplejson: + kwargs['namedtuple_as_object'] = False + return json.dump(obj, fp, *args, **kwargs) + + +def loads(s, encoding='utf-8', **kwargs): + return json.loads(strutils.safe_decode(s, encoding), **kwargs) + + +def load(fp, encoding='utf-8', **kwargs): + return json.load(codecs.getreader(encoding)(fp), **kwargs) + + +try: + import anyjson +except ImportError: + pass +else: + anyjson._modules.append((__name__, 'dumps', TypeError, + 'loads', ValueError, 'load')) + anyjson.force_implementation(__name__) diff --git a/monasca/openstack/common/local.py b/monasca/openstack/common/local.py new file mode 100644 index 000000000..0819d5b97 --- /dev/null +++ b/monasca/openstack/common/local.py @@ -0,0 +1,45 @@ +# Copyright 2011 OpenStack Foundation. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +"""Local storage of variables using weak references""" + +import threading +import weakref + + +class WeakLocal(threading.local): + def __getattribute__(self, attr): + rval = super(WeakLocal, self).__getattribute__(attr) + if rval: + # NOTE(mikal): this bit is confusing. What is stored is a weak + # reference, not the value itself. We therefore need to lookup + # the weak reference and return the inner value here. + rval = rval() + return rval + + def __setattr__(self, attr, value): + value = weakref.ref(value) + return super(WeakLocal, self).__setattr__(attr, value) + + +# NOTE(mikal): the name "store" should be deprecated in the future +store = WeakLocal() + +# A "weak" store uses weak references and allows an object to fall out of scope +# when it falls out of scope in the code that uses the thread local storage. A +# "strong" store will hold a reference to the object so that it never falls out +# of scope. +weak_store = WeakLocal() +strong_store = threading.local() diff --git a/monasca/openstack/common/lockutils.py b/monasca/openstack/common/lockutils.py new file mode 100644 index 000000000..7616dfd7c --- /dev/null +++ b/monasca/openstack/common/lockutils.py @@ -0,0 +1,322 @@ +# Copyright 2011 OpenStack Foundation. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import contextlib +import errno +import functools +import logging +import os +import shutil +import subprocess +import sys +import tempfile +import threading +import time +import weakref + +from oslo.config import cfg + +from monasca.openstack.common import fileutils +from monasca.openstack.common.gettextutils import _, _LE, _LI + + +LOG = logging.getLogger(__name__) + + +util_opts = [ + cfg.BoolOpt('disable_process_locking', default=False, + help='Enables or disables inter-process locks.'), + cfg.StrOpt('lock_path', + default=os.environ.get("MONASCA_LOCK_PATH"), + help='Directory to use for lock files.') +] + + +CONF = cfg.CONF +CONF.register_opts(util_opts) + + +def set_defaults(lock_path): + cfg.set_defaults(util_opts, lock_path=lock_path) + + +class _FileLock(object): + """Lock implementation which allows multiple locks, working around + issues like bugs.debian.org/cgi-bin/bugreport.cgi?bug=632857 and does + not require any cleanup. Since the lock is always held on a file + descriptor rather than outside of the process, the lock gets dropped + automatically if the process crashes, even if __exit__ is not executed. + + There are no guarantees regarding usage by multiple green threads in a + single process here. This lock works only between processes. Exclusive + access between local threads should be achieved using the semaphores + in the @synchronized decorator. + + Note these locks are released when the descriptor is closed, so it's not + safe to close the file descriptor while another green thread holds the + lock. Just opening and closing the lock file can break synchronisation, + so lock files must be accessed only using this abstraction. + """ + + def __init__(self, name): + self.lockfile = None + self.fname = name + + def acquire(self): + basedir = os.path.dirname(self.fname) + + if not os.path.exists(basedir): + fileutils.ensure_tree(basedir) + LOG.info(_LI('Created lock path: %s'), basedir) + + self.lockfile = open(self.fname, 'w') + + while True: + try: + # Using non-blocking locks since green threads are not + # patched to deal with blocking locking calls. + # Also upon reading the MSDN docs for locking(), it seems + # to have a laughable 10 attempts "blocking" mechanism. + self.trylock() + LOG.debug('Got file lock "%s"', self.fname) + return True + except IOError as e: + if e.errno in (errno.EACCES, errno.EAGAIN): + # external locks synchronise things like iptables + # updates - give it some time to prevent busy spinning + time.sleep(0.01) + else: + raise threading.ThreadError(_("Unable to acquire lock on" + " `%(filename)s` due to" + " %(exception)s") % + {'filename': self.fname, + 'exception': e}) + + def __enter__(self): + self.acquire() + return self + + def release(self): + try: + self.unlock() + self.lockfile.close() + LOG.debug('Released file lock "%s"', self.fname) + except IOError: + LOG.exception(_LE("Could not release the acquired lock `%s`"), + self.fname) + + def __exit__(self, exc_type, exc_val, exc_tb): + self.release() + + def exists(self): + return os.path.exists(self.fname) + + def trylock(self): + raise NotImplementedError() + + def unlock(self): + raise NotImplementedError() + + +class _WindowsLock(_FileLock): + def trylock(self): + msvcrt.locking(self.lockfile.fileno(), msvcrt.LK_NBLCK, 1) + + def unlock(self): + msvcrt.locking(self.lockfile.fileno(), msvcrt.LK_UNLCK, 1) + + +class _FcntlLock(_FileLock): + def trylock(self): + fcntl.lockf(self.lockfile, fcntl.LOCK_EX | fcntl.LOCK_NB) + + def unlock(self): + fcntl.lockf(self.lockfile, fcntl.LOCK_UN) + + +if os.name == 'nt': + import msvcrt + InterProcessLock = _WindowsLock +else: + import fcntl + InterProcessLock = _FcntlLock + +_semaphores = weakref.WeakValueDictionary() +_semaphores_lock = threading.Lock() + + +def _get_lock_path(name, lock_file_prefix, lock_path=None): + # NOTE(mikal): the lock name cannot contain directory + # separators + name = name.replace(os.sep, '_') + if lock_file_prefix: + sep = '' if lock_file_prefix.endswith('-') else '-' + name = '%s%s%s' % (lock_file_prefix, sep, name) + + local_lock_path = lock_path or CONF.lock_path + + if not local_lock_path: + raise cfg.RequiredOptError('lock_path') + + return os.path.join(local_lock_path, name) + + +def external_lock(name, lock_file_prefix=None, lock_path=None): + LOG.debug('Attempting to grab external lock "%(lock)s"', + {'lock': name}) + + lock_file_path = _get_lock_path(name, lock_file_prefix, lock_path) + + return InterProcessLock(lock_file_path) + + +def remove_external_lock_file(name, lock_file_prefix=None): + """Remove an external lock file when it's not used anymore + This will be helpful when we have a lot of lock files + """ + with internal_lock(name): + lock_file_path = _get_lock_path(name, lock_file_prefix) + try: + os.remove(lock_file_path) + except OSError: + LOG.info(_LI('Failed to remove file %(file)s'), + {'file': lock_file_path}) + + +def internal_lock(name): + with _semaphores_lock: + try: + sem = _semaphores[name] + except KeyError: + sem = threading.Semaphore() + _semaphores[name] = sem + + LOG.debug('Got semaphore "%(lock)s"', {'lock': name}) + return sem + + +@contextlib.contextmanager +def lock(name, lock_file_prefix=None, external=False, lock_path=None): + """Context based lock + + This function yields a `threading.Semaphore` instance (if we don't use + eventlet.monkey_patch(), else `semaphore.Semaphore`) unless external is + True, in which case, it'll yield an InterProcessLock instance. + + :param lock_file_prefix: The lock_file_prefix argument is used to provide + lock files on disk with a meaningful prefix. + + :param external: The external keyword argument denotes whether this lock + should work across multiple processes. This means that if two different + workers both run a method decorated with @synchronized('mylock', + external=True), only one of them will execute at a time. + """ + int_lock = internal_lock(name) + with int_lock: + if external and not CONF.disable_process_locking: + ext_lock = external_lock(name, lock_file_prefix, lock_path) + with ext_lock: + yield ext_lock + else: + yield int_lock + LOG.debug('Released semaphore "%(lock)s"', {'lock': name}) + + +def synchronized(name, lock_file_prefix=None, external=False, lock_path=None): + """Synchronization decorator. + + Decorating a method like so:: + + @synchronized('mylock') + def foo(self, *args): + ... + + ensures that only one thread will execute the foo method at a time. + + Different methods can share the same lock:: + + @synchronized('mylock') + def foo(self, *args): + ... + + @synchronized('mylock') + def bar(self, *args): + ... + + This way only one of either foo or bar can be executing at a time. + """ + + def wrap(f): + @functools.wraps(f) + def inner(*args, **kwargs): + try: + with lock(name, lock_file_prefix, external, lock_path): + LOG.debug('Got semaphore / lock "%(function)s"', + {'function': f.__name__}) + return f(*args, **kwargs) + finally: + LOG.debug('Semaphore / lock released "%(function)s"', + {'function': f.__name__}) + return inner + return wrap + + +def synchronized_with_prefix(lock_file_prefix): + """Partial object generator for the synchronization decorator. + + Redefine @synchronized in each project like so:: + + (in nova/utils.py) + from nova.openstack.common import lockutils + + synchronized = lockutils.synchronized_with_prefix('nova-') + + + (in nova/foo.py) + from nova import utils + + @utils.synchronized('mylock') + def bar(self, *args): + ... + + The lock_file_prefix argument is used to provide lock files on disk with a + meaningful prefix. + """ + + return functools.partial(synchronized, lock_file_prefix=lock_file_prefix) + + +def main(argv): + """Create a dir for locks and pass it to command from arguments + + If you run this: + python -m openstack.common.lockutils python setup.py testr + + a temporary directory will be created for all your locks and passed to all + your tests in an environment variable. The temporary dir will be deleted + afterwards and the return value will be preserved. + """ + + lock_dir = tempfile.mkdtemp() + os.environ["MONASCA_LOCK_PATH"] = lock_dir + try: + ret_val = subprocess.call(argv[1:]) + finally: + shutil.rmtree(lock_dir, ignore_errors=True) + return ret_val + + +if __name__ == '__main__': + sys.exit(main(sys.argv)) diff --git a/monasca/openstack/common/log.py b/monasca/openstack/common/log.py new file mode 100644 index 000000000..36db9a7fb --- /dev/null +++ b/monasca/openstack/common/log.py @@ -0,0 +1,713 @@ +# Copyright 2011 OpenStack Foundation. +# Copyright 2010 United States Government as represented by the +# Administrator of the National Aeronautics and Space Administration. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +"""OpenStack logging handler. + +This module adds to logging functionality by adding the option to specify +a context object when calling the various log methods. If the context object +is not specified, default formatting is used. Additionally, an instance uuid +may be passed as part of the log message, which is intended to make it easier +for admins to find messages related to a specific instance. + +It also allows setting of formatting information through conf. + +""" + +import inspect +import itertools +import logging +import logging.config +import logging.handlers +import os +import socket +import sys +import traceback + +from oslo.config import cfg +import six +from six import moves + +_PY26 = sys.version_info[0:2] == (2, 6) + +from monasca.openstack.common.gettextutils import _ +from monasca.openstack.common import importutils +from monasca.openstack.common import jsonutils +from monasca.openstack.common import local +# NOTE(flaper87): Pls, remove when graduating this module +# from the incubator. +from monasca.openstack.common.strutils import mask_password # noqa + + +_DEFAULT_LOG_DATE_FORMAT = "%Y-%m-%d %H:%M:%S" + + +common_cli_opts = [ + cfg.BoolOpt('debug', + short='d', + default=False, + help='Print debugging output (set logging level to ' + 'DEBUG instead of default WARNING level).'), + cfg.BoolOpt('verbose', + short='v', + default=False, + help='Print more verbose output (set logging level to ' + 'INFO instead of default WARNING level).'), +] + +logging_cli_opts = [ + cfg.StrOpt('log-config-append', + metavar='PATH', + deprecated_name='log-config', + help='The name of a logging configuration file. This file ' + 'is appended to any existing logging configuration ' + 'files. For details about logging configuration files, ' + 'see the Python logging module documentation.'), + cfg.StrOpt('log-format', + metavar='FORMAT', + help='DEPRECATED. ' + 'A logging.Formatter log message format string which may ' + 'use any of the available logging.LogRecord attributes. ' + 'This option is deprecated. Please use ' + 'logging_context_format_string and ' + 'logging_default_format_string instead.'), + cfg.StrOpt('log-date-format', + default=_DEFAULT_LOG_DATE_FORMAT, + metavar='DATE_FORMAT', + help='Format string for %%(asctime)s in log records. ' + 'Default: %(default)s .'), + cfg.StrOpt('log-file', + metavar='PATH', + deprecated_name='logfile', + help='(Optional) Name of log file to output to. ' + 'If no default is set, logging will go to stdout.'), + cfg.StrOpt('log-dir', + deprecated_name='logdir', + help='(Optional) The base directory used for relative ' + '--log-file paths.'), + cfg.BoolOpt('use-syslog', + default=False, + help='Use syslog for logging. ' + 'Existing syslog format is DEPRECATED during I, ' + 'and will change in J to honor RFC5424.'), + cfg.BoolOpt('use-syslog-rfc-format', + # TODO(bogdando) remove or use True after existing + # syslog format deprecation in J + default=False, + help='(Optional) Enables or disables syslog rfc5424 format ' + 'for logging. If enabled, prefixes the MSG part of the ' + 'syslog message with APP-NAME (RFC5424). The ' + 'format without the APP-NAME is deprecated in I, ' + 'and will be removed in J.'), + cfg.StrOpt('syslog-log-facility', + default='LOG_USER', + help='Syslog facility to receive log lines.') +] + +generic_log_opts = [ + cfg.BoolOpt('use_stderr', + default=True, + help='Log output to standard error.') +] + +DEFAULT_LOG_LEVELS = ['amqp=WARN', 'amqplib=WARN', 'boto=WARN', + 'qpid=WARN', 'sqlalchemy=WARN', 'suds=INFO', + 'oslo.messaging=INFO', 'iso8601=WARN', + 'requests.packages.urllib3.connectionpool=WARN', + 'urllib3.connectionpool=WARN', 'websocket=WARN', + "keystonemiddleware=WARN", "routes.middleware=WARN", + "stevedore=WARN"] + +log_opts = [ + cfg.StrOpt('logging_context_format_string', + default='%(asctime)s.%(msecs)03d %(process)d %(levelname)s ' + '%(name)s [%(request_id)s %(user_identity)s] ' + '%(instance)s%(message)s', + help='Format string to use for log messages with context.'), + cfg.StrOpt('logging_default_format_string', + default='%(asctime)s.%(msecs)03d %(process)d %(levelname)s ' + '%(name)s [-] %(instance)s%(message)s', + help='Format string to use for log messages without context.'), + cfg.StrOpt('logging_debug_format_suffix', + default='%(funcName)s %(pathname)s:%(lineno)d', + help='Data to append to log format when level is DEBUG.'), + cfg.StrOpt('logging_exception_prefix', + default='%(asctime)s.%(msecs)03d %(process)d TRACE %(name)s ' + '%(instance)s', + help='Prefix each line of exception output with this format.'), + cfg.ListOpt('default_log_levels', + default=DEFAULT_LOG_LEVELS, + help='List of logger=LEVEL pairs.'), + cfg.BoolOpt('publish_errors', + default=False, + help='Enables or disables publication of error events.'), + cfg.BoolOpt('fatal_deprecations', + default=False, + help='Enables or disables fatal status of deprecations.'), + + # NOTE(mikal): there are two options here because sometimes we are handed + # a full instance (and could include more information), and other times we + # are just handed a UUID for the instance. + cfg.StrOpt('instance_format', + default='[instance: %(uuid)s] ', + help='The format for an instance that is passed with the log ' + 'message.'), + cfg.StrOpt('instance_uuid_format', + default='[instance: %(uuid)s] ', + help='The format for an instance UUID that is passed with the ' + 'log message.'), +] + +CONF = cfg.CONF +CONF.register_cli_opts(common_cli_opts) +CONF.register_cli_opts(logging_cli_opts) +CONF.register_opts(generic_log_opts) +CONF.register_opts(log_opts) + +# our new audit level +# NOTE(jkoelker) Since we synthesized an audit level, make the logging +# module aware of it so it acts like other levels. +logging.AUDIT = logging.INFO + 1 +logging.addLevelName(logging.AUDIT, 'AUDIT') + + +try: + NullHandler = logging.NullHandler +except AttributeError: # NOTE(jkoelker) NullHandler added in Python 2.7 + class NullHandler(logging.Handler): + def handle(self, record): + pass + + def emit(self, record): + pass + + def createLock(self): + self.lock = None + + +def _dictify_context(context): + if context is None: + return None + if not isinstance(context, dict) and getattr(context, 'to_dict', None): + context = context.to_dict() + return context + + +def _get_binary_name(): + return os.path.basename(inspect.stack()[-1][1]) + + +def _get_log_file_path(binary=None): + logfile = CONF.log_file + logdir = CONF.log_dir + + if logfile and not logdir: + return logfile + + if logfile and logdir: + return os.path.join(logdir, logfile) + + if logdir: + binary = binary or _get_binary_name() + return '%s.log' % (os.path.join(logdir, binary),) + + return None + + +class BaseLoggerAdapter(logging.LoggerAdapter): + + def audit(self, msg, *args, **kwargs): + self.log(logging.AUDIT, msg, *args, **kwargs) + + def isEnabledFor(self, level): + if _PY26: + # This method was added in python 2.7 (and it does the exact + # same logic, so we need to do the exact same logic so that + # python 2.6 has this capability as well). + return self.logger.isEnabledFor(level) + else: + return super(BaseLoggerAdapter, self).isEnabledFor(level) + + +class LazyAdapter(BaseLoggerAdapter): + def __init__(self, name='unknown', version='unknown'): + self._logger = None + self.extra = {} + self.name = name + self.version = version + + @property + def logger(self): + if not self._logger: + self._logger = getLogger(self.name, self.version) + if six.PY3: + # In Python 3, the code fails because the 'manager' attribute + # cannot be found when using a LoggerAdapter as the + # underlying logger. Work around this issue. + self._logger.manager = self._logger.logger.manager + return self._logger + + +class ContextAdapter(BaseLoggerAdapter): + warn = logging.LoggerAdapter.warning + + def __init__(self, logger, project_name, version_string): + self.logger = logger + self.project = project_name + self.version = version_string + self._deprecated_messages_sent = dict() + + @property + def handlers(self): + return self.logger.handlers + + def deprecated(self, msg, *args, **kwargs): + """Call this method when a deprecated feature is used. + + If the system is configured for fatal deprecations then the message + is logged at the 'critical' level and :class:`DeprecatedConfig` will + be raised. + + Otherwise, the message will be logged (once) at the 'warn' level. + + :raises: :class:`DeprecatedConfig` if the system is configured for + fatal deprecations. + + """ + stdmsg = _("Deprecated: %s") % msg + if CONF.fatal_deprecations: + self.critical(stdmsg, *args, **kwargs) + raise DeprecatedConfig(msg=stdmsg) + + # Using a list because a tuple with dict can't be stored in a set. + sent_args = self._deprecated_messages_sent.setdefault(msg, list()) + + if args in sent_args: + # Already logged this message, so don't log it again. + return + + sent_args.append(args) + self.warn(stdmsg, *args, **kwargs) + + def process(self, msg, kwargs): + # NOTE(jecarey): If msg is not unicode, coerce it into unicode + # before it can get to the python logging and + # possibly cause string encoding trouble + if not isinstance(msg, six.text_type): + msg = six.text_type(msg) + + if 'extra' not in kwargs: + kwargs['extra'] = {} + extra = kwargs['extra'] + + context = kwargs.pop('context', None) + if not context: + context = getattr(local.store, 'context', None) + if context: + extra.update(_dictify_context(context)) + + instance = kwargs.pop('instance', None) + instance_uuid = (extra.get('instance_uuid') or + kwargs.pop('instance_uuid', None)) + instance_extra = '' + if instance: + instance_extra = CONF.instance_format % instance + elif instance_uuid: + instance_extra = (CONF.instance_uuid_format + % {'uuid': instance_uuid}) + extra['instance'] = instance_extra + + extra.setdefault('user_identity', kwargs.pop('user_identity', None)) + + extra['project'] = self.project + extra['version'] = self.version + extra['extra'] = extra.copy() + return msg, kwargs + + +class JSONFormatter(logging.Formatter): + def __init__(self, fmt=None, datefmt=None): + # NOTE(jkoelker) we ignore the fmt argument, but its still there + # since logging.config.fileConfig passes it. + self.datefmt = datefmt + + def formatException(self, ei, strip_newlines=True): + lines = traceback.format_exception(*ei) + if strip_newlines: + lines = [moves.filter( + lambda x: x, + line.rstrip().splitlines()) for line in lines] + lines = list(itertools.chain(*lines)) + return lines + + def format(self, record): + message = {'message': record.getMessage(), + 'asctime': self.formatTime(record, self.datefmt), + 'name': record.name, + 'msg': record.msg, + 'args': record.args, + 'levelname': record.levelname, + 'levelno': record.levelno, + 'pathname': record.pathname, + 'filename': record.filename, + 'module': record.module, + 'lineno': record.lineno, + 'funcname': record.funcName, + 'created': record.created, + 'msecs': record.msecs, + 'relative_created': record.relativeCreated, + 'thread': record.thread, + 'thread_name': record.threadName, + 'process_name': record.processName, + 'process': record.process, + 'traceback': None} + + if hasattr(record, 'extra'): + message['extra'] = record.extra + + if record.exc_info: + message['traceback'] = self.formatException(record.exc_info) + + return jsonutils.dumps(message) + + +def _create_logging_excepthook(product_name): + def logging_excepthook(exc_type, value, tb): + extra = {'exc_info': (exc_type, value, tb)} + getLogger(product_name).critical( + "".join(traceback.format_exception_only(exc_type, value)), + **extra) + return logging_excepthook + + +class LogConfigError(Exception): + + message = _('Error loading logging config %(log_config)s: %(err_msg)s') + + def __init__(self, log_config, err_msg): + self.log_config = log_config + self.err_msg = err_msg + + def __str__(self): + return self.message % dict(log_config=self.log_config, + err_msg=self.err_msg) + + +def _load_log_config(log_config_append): + try: + logging.config.fileConfig(log_config_append, + disable_existing_loggers=False) + except (moves.configparser.Error, KeyError) as exc: + raise LogConfigError(log_config_append, six.text_type(exc)) + + +def setup(product_name, version='unknown'): + """Setup logging.""" + if CONF.log_config_append: + _load_log_config(CONF.log_config_append) + else: + _setup_logging_from_conf(product_name, version) + sys.excepthook = _create_logging_excepthook(product_name) + + +def set_defaults(logging_context_format_string=None, + default_log_levels=None): + # Just in case the caller is not setting the + # default_log_level. This is insurance because + # we introduced the default_log_level parameter + # later in a backwards in-compatible change + if default_log_levels is not None: + cfg.set_defaults( + log_opts, + default_log_levels=default_log_levels) + if logging_context_format_string is not None: + cfg.set_defaults( + log_opts, + logging_context_format_string=logging_context_format_string) + + +def _find_facility_from_conf(): + facility_names = logging.handlers.SysLogHandler.facility_names + facility = getattr(logging.handlers.SysLogHandler, + CONF.syslog_log_facility, + None) + + if facility is None and CONF.syslog_log_facility in facility_names: + facility = facility_names.get(CONF.syslog_log_facility) + + if facility is None: + valid_facilities = facility_names.keys() + consts = ['LOG_AUTH', 'LOG_AUTHPRIV', 'LOG_CRON', 'LOG_DAEMON', + 'LOG_FTP', 'LOG_KERN', 'LOG_LPR', 'LOG_MAIL', 'LOG_NEWS', + 'LOG_AUTH', 'LOG_SYSLOG', 'LOG_USER', 'LOG_UUCP', + 'LOG_LOCAL0', 'LOG_LOCAL1', 'LOG_LOCAL2', 'LOG_LOCAL3', + 'LOG_LOCAL4', 'LOG_LOCAL5', 'LOG_LOCAL6', 'LOG_LOCAL7'] + valid_facilities.extend(consts) + raise TypeError(_('syslog facility must be one of: %s') % + ', '.join("'%s'" % fac + for fac in valid_facilities)) + + return facility + + +class RFCSysLogHandler(logging.handlers.SysLogHandler): + def __init__(self, *args, **kwargs): + self.binary_name = _get_binary_name() + # Do not use super() unless type(logging.handlers.SysLogHandler) + # is 'type' (Python 2.7). + # Use old style calls, if the type is 'classobj' (Python 2.6) + logging.handlers.SysLogHandler.__init__(self, *args, **kwargs) + + def format(self, record): + # Do not use super() unless type(logging.handlers.SysLogHandler) + # is 'type' (Python 2.7). + # Use old style calls, if the type is 'classobj' (Python 2.6) + msg = logging.handlers.SysLogHandler.format(self, record) + msg = self.binary_name + ' ' + msg + return msg + + +def _setup_logging_from_conf(project, version): + log_root = getLogger(None).logger + for handler in log_root.handlers: + log_root.removeHandler(handler) + + logpath = _get_log_file_path() + if logpath: + filelog = logging.handlers.WatchedFileHandler(logpath) + log_root.addHandler(filelog) + + if CONF.use_stderr: + streamlog = ColorHandler() + log_root.addHandler(streamlog) + + elif not logpath: + # pass sys.stdout as a positional argument + # python2.6 calls the argument strm, in 2.7 it's stream + streamlog = logging.StreamHandler(sys.stdout) + log_root.addHandler(streamlog) + + if CONF.publish_errors: + try: + handler = importutils.import_object( + "monasca.openstack.common.log_handler.PublishErrorsHandler", + logging.ERROR) + except ImportError: + handler = importutils.import_object( + "oslo.messaging.notify.log_handler.PublishErrorsHandler", + logging.ERROR) + log_root.addHandler(handler) + + datefmt = CONF.log_date_format + for handler in log_root.handlers: + # NOTE(alaski): CONF.log_format overrides everything currently. This + # should be deprecated in favor of context aware formatting. + if CONF.log_format: + handler.setFormatter(logging.Formatter(fmt=CONF.log_format, + datefmt=datefmt)) + log_root.info('Deprecated: log_format is now deprecated and will ' + 'be removed in the next release') + else: + handler.setFormatter(ContextFormatter(project=project, + version=version, + datefmt=datefmt)) + + if CONF.debug: + log_root.setLevel(logging.DEBUG) + elif CONF.verbose: + log_root.setLevel(logging.INFO) + else: + log_root.setLevel(logging.WARNING) + + for pair in CONF.default_log_levels: + mod, _sep, level_name = pair.partition('=') + logger = logging.getLogger(mod) + # NOTE(AAzza) in python2.6 Logger.setLevel doesn't convert string name + # to integer code. + if sys.version_info < (2, 7): + level = logging.getLevelName(level_name) + logger.setLevel(level) + else: + logger.setLevel(level_name) + + if CONF.use_syslog: + try: + facility = _find_facility_from_conf() + # TODO(bogdando) use the format provided by RFCSysLogHandler + # after existing syslog format deprecation in J + if CONF.use_syslog_rfc_format: + syslog = RFCSysLogHandler(facility=facility) + else: + syslog = logging.handlers.SysLogHandler(facility=facility) + log_root.addHandler(syslog) + except socket.error: + log_root.error('Unable to add syslog handler. Verify that syslog' + 'is running.') + + +_loggers = {} + + +def getLogger(name='unknown', version='unknown'): + if name not in _loggers: + _loggers[name] = ContextAdapter(logging.getLogger(name), + name, + version) + return _loggers[name] + + +def getLazyLogger(name='unknown', version='unknown'): + """Returns lazy logger. + + Creates a pass-through logger that does not create the real logger + until it is really needed and delegates all calls to the real logger + once it is created. + """ + return LazyAdapter(name, version) + + +class WritableLogger(object): + """A thin wrapper that responds to `write` and logs.""" + + def __init__(self, logger, level=logging.INFO): + self.logger = logger + self.level = level + + def write(self, msg): + self.logger.log(self.level, msg.rstrip()) + + +class ContextFormatter(logging.Formatter): + """A context.RequestContext aware formatter configured through flags. + + The flags used to set format strings are: logging_context_format_string + and logging_default_format_string. You can also specify + logging_debug_format_suffix to append extra formatting if the log level is + debug. + + For information about what variables are available for the formatter see: + http://docs.python.org/library/logging.html#formatter + + If available, uses the context value stored in TLS - local.store.context + + """ + + def __init__(self, *args, **kwargs): + """Initialize ContextFormatter instance + + Takes additional keyword arguments which can be used in the message + format string. + + :keyword project: project name + :type project: string + :keyword version: project version + :type version: string + + """ + + self.project = kwargs.pop('project', 'unknown') + self.version = kwargs.pop('version', 'unknown') + + logging.Formatter.__init__(self, *args, **kwargs) + + def format(self, record): + """Uses contextstring if request_id is set, otherwise default.""" + + # NOTE(jecarey): If msg is not unicode, coerce it into unicode + # before it can get to the python logging and + # possibly cause string encoding trouble + if not isinstance(record.msg, six.text_type): + record.msg = six.text_type(record.msg) + + # store project info + record.project = self.project + record.version = self.version + + # store request info + context = getattr(local.store, 'context', None) + if context: + d = _dictify_context(context) + for k, v in d.items(): + setattr(record, k, v) + + # NOTE(sdague): default the fancier formatting params + # to an empty string so we don't throw an exception if + # they get used + for key in ('instance', 'color', 'user_identity'): + if key not in record.__dict__: + record.__dict__[key] = '' + + if record.__dict__.get('request_id'): + fmt = CONF.logging_context_format_string + else: + fmt = CONF.logging_default_format_string + + if (record.levelno == logging.DEBUG and + CONF.logging_debug_format_suffix): + fmt += " " + CONF.logging_debug_format_suffix + + if sys.version_info < (3, 2): + self._fmt = fmt + else: + self._style = logging.PercentStyle(fmt) + self._fmt = self._style._fmt + # Cache this on the record, Logger will respect our formatted copy + if record.exc_info: + record.exc_text = self.formatException(record.exc_info, record) + return logging.Formatter.format(self, record) + + def formatException(self, exc_info, record=None): + """Format exception output with CONF.logging_exception_prefix.""" + if not record: + return logging.Formatter.formatException(self, exc_info) + + stringbuffer = moves.StringIO() + traceback.print_exception(exc_info[0], exc_info[1], exc_info[2], + None, stringbuffer) + lines = stringbuffer.getvalue().split('\n') + stringbuffer.close() + + if CONF.logging_exception_prefix.find('%(asctime)') != -1: + record.asctime = self.formatTime(record, self.datefmt) + + formatted_lines = [] + for line in lines: + pl = CONF.logging_exception_prefix % record.__dict__ + fl = '%s%s' % (pl, line) + formatted_lines.append(fl) + return '\n'.join(formatted_lines) + + +class ColorHandler(logging.StreamHandler): + LEVEL_COLORS = { + logging.DEBUG: '\033[00;32m', # GREEN + logging.INFO: '\033[00;36m', # CYAN + logging.AUDIT: '\033[01;36m', # BOLD CYAN + logging.WARN: '\033[01;33m', # BOLD YELLOW + logging.ERROR: '\033[01;31m', # BOLD RED + logging.CRITICAL: '\033[01;31m', # BOLD RED + } + + def format(self, record): + record.color = self.LEVEL_COLORS[record.levelno] + return logging.StreamHandler.format(self, record) + + +class DeprecatedConfig(Exception): + message = _("Fatal call to deprecated config: %(msg)s") + + def __init__(self, msg): + super(Exception, self).__init__(self.message % dict(msg=msg)) diff --git a/monasca/openstack/common/loopingcall.py b/monasca/openstack/common/loopingcall.py new file mode 100644 index 000000000..f21fae09c --- /dev/null +++ b/monasca/openstack/common/loopingcall.py @@ -0,0 +1,147 @@ +# Copyright 2010 United States Government as represented by the +# Administrator of the National Aeronautics and Space Administration. +# Copyright 2011 Justin Santa Barbara +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import sys +import time + +from eventlet import event +from eventlet import greenthread + +from monasca.openstack.common.gettextutils import _LE, _LW +from monasca.openstack.common import log as logging + +LOG = logging.getLogger(__name__) + +# NOTE(zyluo): This lambda function was declared to avoid mocking collisions +# with time.time() called in the standard logging module +# during unittests. +_ts = lambda: time.time() + + +class LoopingCallDone(Exception): + """Exception to break out and stop a LoopingCallBase. + + The poll-function passed to LoopingCallBase can raise this exception to + break out of the loop normally. This is somewhat analogous to + StopIteration. + + An optional return-value can be included as the argument to the exception; + this return-value will be returned by LoopingCallBase.wait() + + """ + + def __init__(self, retvalue=True): + """:param retvalue: Value that LoopingCallBase.wait() should return.""" + self.retvalue = retvalue + + +class LoopingCallBase(object): + def __init__(self, f=None, *args, **kw): + self.args = args + self.kw = kw + self.f = f + self._running = False + self.done = None + + def stop(self): + self._running = False + + def wait(self): + return self.done.wait() + + +class FixedIntervalLoopingCall(LoopingCallBase): + """A fixed interval looping call.""" + + def start(self, interval, initial_delay=None): + self._running = True + done = event.Event() + + def _inner(): + if initial_delay: + greenthread.sleep(initial_delay) + + try: + while self._running: + start = _ts() + self.f(*self.args, **self.kw) + end = _ts() + if not self._running: + break + delay = end - start - interval + if delay > 0: + LOG.warn(_LW('task %(func_name)s run outlasted ' + 'interval by %(delay).2f sec'), + {'func_name': repr(self.f), 'delay': delay}) + greenthread.sleep(-delay if delay < 0 else 0) + except LoopingCallDone as e: + self.stop() + done.send(e.retvalue) + except Exception: + LOG.exception(_LE('in fixed duration looping call')) + done.send_exception(*sys.exc_info()) + return + else: + done.send(True) + + self.done = done + + greenthread.spawn_n(_inner) + return self.done + + +class DynamicLoopingCall(LoopingCallBase): + """A looping call which sleeps until the next known event. + + The function called should return how long to sleep for before being + called again. + """ + + def start(self, initial_delay=None, periodic_interval_max=None): + self._running = True + done = event.Event() + + def _inner(): + if initial_delay: + greenthread.sleep(initial_delay) + + try: + while self._running: + idle = self.f(*self.args, **self.kw) + if not self._running: + break + + if periodic_interval_max is not None: + idle = min(idle, periodic_interval_max) + LOG.debug('Dynamic looping call %(func_name)s sleeping ' + 'for %(idle).02f seconds', + {'func_name': repr(self.f), 'idle': idle}) + greenthread.sleep(idle) + except LoopingCallDone as e: + self.stop() + done.send(e.retvalue) + except Exception: + LOG.exception(_LE('in dynamic looping call')) + done.send_exception(*sys.exc_info()) + return + else: + done.send(True) + + self.done = done + + greenthread.spawn(_inner) + return self.done diff --git a/monasca/openstack/common/service.py b/monasca/openstack/common/service.py new file mode 100644 index 000000000..af7d40661 --- /dev/null +++ b/monasca/openstack/common/service.py @@ -0,0 +1,512 @@ +# Copyright 2010 United States Government as represented by the +# Administrator of the National Aeronautics and Space Administration. +# Copyright 2011 Justin Santa Barbara +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +"""Generic Node base class for all workers that run on hosts.""" + +import errno +import logging as std_logging +import os +import random +import signal +import sys +import time + +try: + # Importing just the symbol here because the io module does not + # exist in Python 2.6. + from io import UnsupportedOperation # noqa +except ImportError: + # Python 2.6 + UnsupportedOperation = None + +import eventlet +from eventlet import event +from oslo.config import cfg + +from monasca.openstack.common import eventlet_backdoor +from monasca.openstack.common.gettextutils import _LE, _LI, _LW +from monasca.openstack.common import importutils +from monasca.openstack.common import log as logging +from monasca.openstack.common import systemd +from monasca.openstack.common import threadgroup + + +rpc = importutils.try_import('monasca.openstack.common.rpc') +CONF = cfg.CONF +LOG = logging.getLogger(__name__) + + +def _sighup_supported(): + return hasattr(signal, 'SIGHUP') + + +def _is_daemon(): + # The process group for a foreground process will match the + # process group of the controlling terminal. If those values do + # not match, or ioctl() fails on the stdout file handle, we assume + # the process is running in the background as a daemon. + # http://www.gnu.org/software/bash/manual/bashref.html#Job-Control-Basics + try: + is_daemon = os.getpgrp() != os.tcgetpgrp(sys.stdout.fileno()) + except OSError as err: + if err.errno == errno.ENOTTY: + # Assume we are a daemon because there is no terminal. + is_daemon = True + else: + raise + except UnsupportedOperation: + # Could not get the fileno for stdout, so we must be a daemon. + is_daemon = True + return is_daemon + + +def _is_sighup_and_daemon(signo): + if not (_sighup_supported() and signo == signal.SIGHUP): + # Avoid checking if we are a daemon, because the signal isn't + # SIGHUP. + return False + return _is_daemon() + + +def _signo_to_signame(signo): + signals = {signal.SIGTERM: 'SIGTERM', + signal.SIGINT: 'SIGINT'} + if _sighup_supported(): + signals[signal.SIGHUP] = 'SIGHUP' + return signals[signo] + + +def _set_signals_handler(handler): + signal.signal(signal.SIGTERM, handler) + signal.signal(signal.SIGINT, handler) + if _sighup_supported(): + signal.signal(signal.SIGHUP, handler) + + +class Launcher(object): + """Launch one or more services and wait for them to complete.""" + + def __init__(self): + """Initialize the service launcher. + + :returns: None + + """ + self.services = Services() + self.backdoor_port = eventlet_backdoor.initialize_if_enabled() + + def launch_service(self, service): + """Load and start the given service. + + :param service: The service you would like to start. + :returns: None + + """ + service.backdoor_port = self.backdoor_port + self.services.add(service) + + def stop(self): + """Stop all services which are currently running. + + :returns: None + + """ + self.services.stop() + + def wait(self): + """Waits until all services have been stopped, and then returns. + + :returns: None + + """ + self.services.wait() + + def restart(self): + """Reload config files and restart service. + + :returns: None + + """ + cfg.CONF.reload_config_files() + self.services.restart() + + +class SignalExit(SystemExit): + def __init__(self, signo, exccode=1): + super(SignalExit, self).__init__(exccode) + self.signo = signo + + +class ServiceLauncher(Launcher): + def _handle_signal(self, signo, frame): + # Allow the process to be killed again and die from natural causes + _set_signals_handler(signal.SIG_DFL) + raise SignalExit(signo) + + def handle_signal(self): + _set_signals_handler(self._handle_signal) + + def _wait_for_exit_or_signal(self, ready_callback=None): + status = None + signo = 0 + + LOG.debug('Full set of CONF:') + CONF.log_opt_values(LOG, std_logging.DEBUG) + + try: + if ready_callback: + ready_callback() + super(ServiceLauncher, self).wait() + except SignalExit as exc: + signame = _signo_to_signame(exc.signo) + LOG.info(_LI('Caught %s, exiting'), signame) + status = exc.code + signo = exc.signo + except SystemExit as exc: + status = exc.code + finally: + self.stop() + if rpc: + try: + rpc.cleanup() + except Exception: + # We're shutting down, so it doesn't matter at this point. + LOG.exception(_LE('Exception during rpc cleanup.')) + + return status, signo + + def wait(self, ready_callback=None): + systemd.notify_once() + while True: + self.handle_signal() + status, signo = self._wait_for_exit_or_signal(ready_callback) + if not _is_sighup_and_daemon(signo): + return status + self.restart() + + +class ServiceWrapper(object): + def __init__(self, service, workers): + self.service = service + self.workers = workers + self.children = set() + self.forktimes = [] + + +class ProcessLauncher(object): + def __init__(self, wait_interval=0.01): + """Constructor. + + :param wait_interval: The interval to sleep for between checks + of child process exit. + """ + self.children = {} + self.sigcaught = None + self.running = True + self.wait_interval = wait_interval + rfd, self.writepipe = os.pipe() + self.readpipe = eventlet.greenio.GreenPipe(rfd, 'r') + self.handle_signal() + + def handle_signal(self): + _set_signals_handler(self._handle_signal) + + def _handle_signal(self, signo, frame): + self.sigcaught = signo + self.running = False + + # Allow the process to be killed again and die from natural causes + _set_signals_handler(signal.SIG_DFL) + + def _pipe_watcher(self): + # This will block until the write end is closed when the parent + # dies unexpectedly + self.readpipe.read() + + LOG.info(_LI('Parent process has died unexpectedly, exiting')) + + sys.exit(1) + + def _child_process_handle_signal(self): + # Setup child signal handlers differently + def _sigterm(*args): + signal.signal(signal.SIGTERM, signal.SIG_DFL) + raise SignalExit(signal.SIGTERM) + + def _sighup(*args): + signal.signal(signal.SIGHUP, signal.SIG_DFL) + raise SignalExit(signal.SIGHUP) + + signal.signal(signal.SIGTERM, _sigterm) + if _sighup_supported(): + signal.signal(signal.SIGHUP, _sighup) + # Block SIGINT and let the parent send us a SIGTERM + signal.signal(signal.SIGINT, signal.SIG_IGN) + + def _child_wait_for_exit_or_signal(self, launcher): + status = 0 + signo = 0 + + # NOTE(johannes): All exceptions are caught to ensure this + # doesn't fallback into the loop spawning children. It would + # be bad for a child to spawn more children. + try: + launcher.wait() + except SignalExit as exc: + signame = _signo_to_signame(exc.signo) + LOG.info(_LI('Child caught %s, exiting'), signame) + status = exc.code + signo = exc.signo + except SystemExit as exc: + status = exc.code + except BaseException: + LOG.exception(_LE('Unhandled exception')) + status = 2 + finally: + launcher.stop() + + return status, signo + + def _child_process(self, service): + self._child_process_handle_signal() + + # Reopen the eventlet hub to make sure we don't share an epoll + # fd with parent and/or siblings, which would be bad + eventlet.hubs.use_hub() + + # Close write to ensure only parent has it open + os.close(self.writepipe) + # Create greenthread to watch for parent to close pipe + eventlet.spawn_n(self._pipe_watcher) + + # Reseed random number generator + random.seed() + + launcher = Launcher() + launcher.launch_service(service) + return launcher + + def _start_child(self, wrap): + if len(wrap.forktimes) > wrap.workers: + # Limit ourselves to one process a second (over the period of + # number of workers * 1 second). This will allow workers to + # start up quickly but ensure we don't fork off children that + # die instantly too quickly. + if time.time() - wrap.forktimes[0] < wrap.workers: + LOG.info(_LI('Forking too fast, sleeping')) + time.sleep(1) + + wrap.forktimes.pop(0) + + wrap.forktimes.append(time.time()) + + pid = os.fork() + if pid == 0: + launcher = self._child_process(wrap.service) + while True: + self._child_process_handle_signal() + status, signo = self._child_wait_for_exit_or_signal(launcher) + if not _is_sighup_and_daemon(signo): + break + launcher.restart() + + os._exit(status) + + LOG.info(_LI('Started child %d'), pid) + + wrap.children.add(pid) + self.children[pid] = wrap + + return pid + + def launch_service(self, service, workers=1): + wrap = ServiceWrapper(service, workers) + + LOG.info(_LI('Starting %d workers'), wrap.workers) + while self.running and len(wrap.children) < wrap.workers: + self._start_child(wrap) + + def _wait_child(self): + try: + # Don't block if no child processes have exited + pid, status = os.waitpid(0, os.WNOHANG) + if not pid: + return None + except OSError as exc: + if exc.errno not in (errno.EINTR, errno.ECHILD): + raise + return None + + if os.WIFSIGNALED(status): + sig = os.WTERMSIG(status) + LOG.info(_LI('Child %(pid)d killed by signal %(sig)d'), + dict(pid=pid, sig=sig)) + else: + code = os.WEXITSTATUS(status) + LOG.info(_LI('Child %(pid)s exited with status %(code)d'), + dict(pid=pid, code=code)) + + if pid not in self.children: + LOG.warning(_LW('pid %d not in child list'), pid) + return None + + wrap = self.children.pop(pid) + wrap.children.remove(pid) + return wrap + + def _respawn_children(self): + while self.running: + wrap = self._wait_child() + if not wrap: + # Yield to other threads if no children have exited + # Sleep for a short time to avoid excessive CPU usage + # (see bug #1095346) + eventlet.greenthread.sleep(self.wait_interval) + continue + while self.running and len(wrap.children) < wrap.workers: + self._start_child(wrap) + + def wait(self): + """Loop waiting on children to die and respawning as necessary.""" + + systemd.notify_once() + LOG.debug('Full set of CONF:') + CONF.log_opt_values(LOG, std_logging.DEBUG) + + try: + while True: + self.handle_signal() + self._respawn_children() + # No signal means that stop was called. Don't clean up here. + if not self.sigcaught: + return + + signame = _signo_to_signame(self.sigcaught) + LOG.info(_LI('Caught %s, stopping children'), signame) + if not _is_sighup_and_daemon(self.sigcaught): + break + + for pid in self.children: + os.kill(pid, signal.SIGHUP) + self.running = True + self.sigcaught = None + except eventlet.greenlet.GreenletExit: + LOG.info(_LI("Wait called after thread killed. Cleaning up.")) + + self.stop() + + def stop(self): + """Terminate child processes and wait on each.""" + self.running = False + for pid in self.children: + try: + os.kill(pid, signal.SIGTERM) + except OSError as exc: + if exc.errno != errno.ESRCH: + raise + + # Wait for children to die + if self.children: + LOG.info(_LI('Waiting on %d children to exit'), len(self.children)) + while self.children: + self._wait_child() + + +class Service(object): + """Service object for binaries running on hosts.""" + + def __init__(self, threads=1000): + self.tg = threadgroup.ThreadGroup(threads) + + # signal that the service is done shutting itself down: + self._done = event.Event() + + def reset(self): + # NOTE(Fengqian): docs for Event.reset() recommend against using it + self._done = event.Event() + + def start(self): + pass + + def stop(self): + self.tg.stop() + self.tg.wait() + # Signal that service cleanup is done: + if not self._done.ready(): + self._done.send() + + def wait(self): + self._done.wait() + + +class Services(object): + + def __init__(self): + self.services = [] + self.tg = threadgroup.ThreadGroup() + self.done = event.Event() + + def add(self, service): + self.services.append(service) + self.tg.add_thread(self.run_service, service, self.done) + + def stop(self): + # wait for graceful shutdown of services: + for service in self.services: + service.stop() + service.wait() + + # Each service has performed cleanup, now signal that the run_service + # wrapper threads can now die: + if not self.done.ready(): + self.done.send() + + # reap threads: + self.tg.stop() + + def wait(self): + self.tg.wait() + + def restart(self): + self.stop() + self.done = event.Event() + for restart_service in self.services: + restart_service.reset() + self.tg.add_thread(self.run_service, restart_service, self.done) + + @staticmethod + def run_service(service, done): + """Service start wrapper. + + :param service: service to run + :param done: event to wait on until a shutdown is triggered + :returns: None + + """ + service.start() + done.wait() + + +def launch(service, workers=1): + if workers is None or workers == 1: + launcher = ServiceLauncher() + launcher.launch_service(service) + else: + launcher = ProcessLauncher() + launcher.launch_service(service, workers=workers) + + return launcher diff --git a/monasca/openstack/common/strutils.py b/monasca/openstack/common/strutils.py new file mode 100644 index 000000000..da333b457 --- /dev/null +++ b/monasca/openstack/common/strutils.py @@ -0,0 +1,311 @@ +# Copyright 2011 OpenStack Foundation. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +System-level utilities and helper functions. +""" + +import math +import re +import sys +import unicodedata + +import six + +from monasca.openstack.common.gettextutils import _ + + +UNIT_PREFIX_EXPONENT = { + 'k': 1, + 'K': 1, + 'Ki': 1, + 'M': 2, + 'Mi': 2, + 'G': 3, + 'Gi': 3, + 'T': 4, + 'Ti': 4, +} +UNIT_SYSTEM_INFO = { + 'IEC': (1024, re.compile(r'(^[-+]?\d*\.?\d+)([KMGT]i?)?(b|bit|B)$')), + 'SI': (1000, re.compile(r'(^[-+]?\d*\.?\d+)([kMGT])?(b|bit|B)$')), +} + +TRUE_STRINGS = ('1', 't', 'true', 'on', 'y', 'yes') +FALSE_STRINGS = ('0', 'f', 'false', 'off', 'n', 'no') + +SLUGIFY_STRIP_RE = re.compile(r"[^\w\s-]") +SLUGIFY_HYPHENATE_RE = re.compile(r"[-\s]+") + + +# NOTE(flaper87): The following globals are used by `mask_password` +_SANITIZE_KEYS = ['adminPass', 'admin_pass', 'password', 'admin_password'] + +# NOTE(ldbragst): Let's build a list of regex objects using the list of +# _SANITIZE_KEYS we already have. This way, we only have to add the new key +# to the list of _SANITIZE_KEYS and we can generate regular expressions +# for XML and JSON automatically. +_SANITIZE_PATTERNS_2 = [] +_SANITIZE_PATTERNS_1 = [] + +# NOTE(amrith): Some regular expressions have only one parameter, some +# have two parameters. Use different lists of patterns here. +_FORMAT_PATTERNS_1 = [r'(%(key)s\s*[=]\s*)[^\s^\'^\"]+'] +_FORMAT_PATTERNS_2 = [r'(%(key)s\s*[=]\s*[\"\']).*?([\"\'])', + r'(%(key)s\s+[\"\']).*?([\"\'])', + r'([-]{2}%(key)s\s+)[^\'^\"^=^\s]+([\s]*)', + r'(<%(key)s>).*?()', + r'([\"\']%(key)s[\"\']\s*:\s*[\"\']).*?([\"\'])', + r'([\'"].*?%(key)s[\'"]\s*:\s*u?[\'"]).*?([\'"])', + r'([\'"].*?%(key)s[\'"]\s*,\s*\'--?[A-z]+\'\s*,\s*u?' + '[\'"]).*?([\'"])', + r'(%(key)s\s*--?[A-z]+\s*)\S+(\s*)'] + +for key in _SANITIZE_KEYS: + for pattern in _FORMAT_PATTERNS_2: + reg_ex = re.compile(pattern % {'key': key}, re.DOTALL) + _SANITIZE_PATTERNS_2.append(reg_ex) + + for pattern in _FORMAT_PATTERNS_1: + reg_ex = re.compile(pattern % {'key': key}, re.DOTALL) + _SANITIZE_PATTERNS_1.append(reg_ex) + + +def int_from_bool_as_string(subject): + """Interpret a string as a boolean and return either 1 or 0. + + Any string value in: + + ('True', 'true', 'On', 'on', '1') + + is interpreted as a boolean True. + + Useful for JSON-decoded stuff and config file parsing + """ + return bool_from_string(subject) and 1 or 0 + + +def bool_from_string(subject, strict=False, default=False): + """Interpret a string as a boolean. + + A case-insensitive match is performed such that strings matching 't', + 'true', 'on', 'y', 'yes', or '1' are considered True and, when + `strict=False`, anything else returns the value specified by 'default'. + + Useful for JSON-decoded stuff and config file parsing. + + If `strict=True`, unrecognized values, including None, will raise a + ValueError which is useful when parsing values passed in from an API call. + Strings yielding False are 'f', 'false', 'off', 'n', 'no', or '0'. + """ + if not isinstance(subject, six.string_types): + subject = six.text_type(subject) + + lowered = subject.strip().lower() + + if lowered in TRUE_STRINGS: + return True + elif lowered in FALSE_STRINGS: + return False + elif strict: + acceptable = ', '.join( + "'%s'" % s for s in sorted(TRUE_STRINGS + FALSE_STRINGS)) + msg = _("Unrecognized value '%(val)s', acceptable values are:" + " %(acceptable)s") % {'val': subject, + 'acceptable': acceptable} + raise ValueError(msg) + else: + return default + + +def safe_decode(text, incoming=None, errors='strict'): + """Decodes incoming text/bytes string using `incoming` if they're not + already unicode. + + :param incoming: Text's current encoding + :param errors: Errors handling policy. See here for valid + values http://docs.python.org/2/library/codecs.html + :returns: text or a unicode `incoming` encoded + representation of it. + :raises TypeError: If text is not an instance of str + """ + if not isinstance(text, (six.string_types, six.binary_type)): + raise TypeError("%s can't be decoded" % type(text)) + + if isinstance(text, six.text_type): + return text + + if not incoming: + incoming = (sys.stdin.encoding or + sys.getdefaultencoding()) + + try: + return text.decode(incoming, errors) + except UnicodeDecodeError: + # Note(flaper87) If we get here, it means that + # sys.stdin.encoding / sys.getdefaultencoding + # didn't return a suitable encoding to decode + # text. This happens mostly when global LANG + # var is not set correctly and there's no + # default encoding. In this case, most likely + # python will use ASCII or ANSI encoders as + # default encodings but they won't be capable + # of decoding non-ASCII characters. + # + # Also, UTF-8 is being used since it's an ASCII + # extension. + return text.decode('utf-8', errors) + + +def safe_encode(text, incoming=None, + encoding='utf-8', errors='strict'): + """Encodes incoming text/bytes string using `encoding`. + + If incoming is not specified, text is expected to be encoded with + current python's default encoding. (`sys.getdefaultencoding`) + + :param incoming: Text's current encoding + :param encoding: Expected encoding for text (Default UTF-8) + :param errors: Errors handling policy. See here for valid + values http://docs.python.org/2/library/codecs.html + :returns: text or a bytestring `encoding` encoded + representation of it. + :raises TypeError: If text is not an instance of str + """ + if not isinstance(text, (six.string_types, six.binary_type)): + raise TypeError("%s can't be encoded" % type(text)) + + if not incoming: + incoming = (sys.stdin.encoding or + sys.getdefaultencoding()) + + if isinstance(text, six.text_type): + return text.encode(encoding, errors) + elif text and encoding != incoming: + # Decode text before encoding it with `encoding` + text = safe_decode(text, incoming, errors) + return text.encode(encoding, errors) + else: + return text + + +def string_to_bytes(text, unit_system='IEC', return_int=False): + """Converts a string into an float representation of bytes. + + The units supported for IEC :: + + Kb(it), Kib(it), Mb(it), Mib(it), Gb(it), Gib(it), Tb(it), Tib(it) + KB, KiB, MB, MiB, GB, GiB, TB, TiB + + The units supported for SI :: + + kb(it), Mb(it), Gb(it), Tb(it) + kB, MB, GB, TB + + Note that the SI unit system does not support capital letter 'K' + + :param text: String input for bytes size conversion. + :param unit_system: Unit system for byte size conversion. + :param return_int: If True, returns integer representation of text + in bytes. (default: decimal) + :returns: Numerical representation of text in bytes. + :raises ValueError: If text has an invalid value. + + """ + try: + base, reg_ex = UNIT_SYSTEM_INFO[unit_system] + except KeyError: + msg = _('Invalid unit system: "%s"') % unit_system + raise ValueError(msg) + match = reg_ex.match(text) + if match: + magnitude = float(match.group(1)) + unit_prefix = match.group(2) + if match.group(3) in ['b', 'bit']: + magnitude /= 8 + else: + msg = _('Invalid string format: %s') % text + raise ValueError(msg) + if not unit_prefix: + res = magnitude + else: + res = magnitude * pow(base, UNIT_PREFIX_EXPONENT[unit_prefix]) + if return_int: + return int(math.ceil(res)) + return res + + +def to_slug(value, incoming=None, errors="strict"): + """Normalize string. + + Convert to lowercase, remove non-word characters, and convert spaces + to hyphens. + + Inspired by Django's `slugify` filter. + + :param value: Text to slugify + :param incoming: Text's current encoding + :param errors: Errors handling policy. See here for valid + values http://docs.python.org/2/library/codecs.html + :returns: slugified unicode representation of `value` + :raises TypeError: If text is not an instance of str + """ + value = safe_decode(value, incoming, errors) + # NOTE(aababilov): no need to use safe_(encode|decode) here: + # encodings are always "ascii", error handling is always "ignore" + # and types are always known (first: unicode; second: str) + value = unicodedata.normalize("NFKD", value).encode( + "ascii", "ignore").decode("ascii") + value = SLUGIFY_STRIP_RE.sub("", value).strip().lower() + return SLUGIFY_HYPHENATE_RE.sub("-", value) + + +def mask_password(message, secret="***"): + """Replace password with 'secret' in message. + + :param message: The string which includes security information. + :param secret: value with which to replace passwords. + :returns: The unicode value of message with the password fields masked. + + For example: + + >>> mask_password("'adminPass' : 'aaaaa'") + "'adminPass' : '***'" + >>> mask_password("'admin_pass' : 'aaaaa'") + "'admin_pass' : '***'" + >>> mask_password('"password" : "aaaaa"') + '"password" : "***"' + >>> mask_password("'original_password' : 'aaaaa'") + "'original_password' : '***'" + >>> mask_password("u'original_password' : u'aaaaa'") + "u'original_password' : u'***'" + """ + message = six.text_type(message) + + # NOTE(ldbragst): Check to see if anything in message contains any key + # specified in _SANITIZE_KEYS, if not then just return the message since + # we don't have to mask any passwords. + if not any(key in message for key in _SANITIZE_KEYS): + return message + + substitute = r'\g<1>' + secret + r'\g<2>' + for pattern in _SANITIZE_PATTERNS_2: + message = re.sub(pattern, substitute, message) + + substitute = r'\g<1>' + secret + for pattern in _SANITIZE_PATTERNS_1: + message = re.sub(pattern, substitute, message) + + return message diff --git a/monasca/openstack/common/systemd.py b/monasca/openstack/common/systemd.py new file mode 100644 index 000000000..6574849f9 --- /dev/null +++ b/monasca/openstack/common/systemd.py @@ -0,0 +1,106 @@ +# Copyright 2012-2014 Red Hat, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Helper module for systemd service readiness notification. +""" + +import os +import socket +import sys + +from monasca.openstack.common import log as logging + + +LOG = logging.getLogger(__name__) + + +def _abstractify(socket_name): + if socket_name.startswith('@'): + # abstract namespace socket + socket_name = '\0%s' % socket_name[1:] + return socket_name + + +def _sd_notify(unset_env, msg): + notify_socket = os.getenv('NOTIFY_SOCKET') + if notify_socket: + sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) + try: + sock.connect(_abstractify(notify_socket)) + sock.sendall(msg) + if unset_env: + del os.environ['NOTIFY_SOCKET'] + except EnvironmentError: + LOG.debug("Systemd notification failed", exc_info=True) + finally: + sock.close() + + +def notify(): + """Send notification to Systemd that service is ready. + + For details see + http://www.freedesktop.org/software/systemd/man/sd_notify.html + """ + _sd_notify(False, 'READY=1') + + +def notify_once(): + """Send notification once to Systemd that service is ready. + + Systemd sets NOTIFY_SOCKET environment variable with the name of the + socket listening for notifications from services. + This method removes the NOTIFY_SOCKET environment variable to ensure + notification is sent only once. + """ + _sd_notify(True, 'READY=1') + + +def onready(notify_socket, timeout): + """Wait for systemd style notification on the socket. + + :param notify_socket: local socket address + :type notify_socket: string + :param timeout: socket timeout + :type timeout: float + :returns: 0 service ready + 1 service not ready + 2 timeout occurred + """ + sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) + sock.settimeout(timeout) + sock.bind(_abstractify(notify_socket)) + try: + msg = sock.recv(512) + except socket.timeout: + return 2 + finally: + sock.close() + if 'READY=1' in msg: + return 0 + else: + return 1 + + +if __name__ == '__main__': + # simple CLI for testing + if len(sys.argv) == 1: + notify() + elif len(sys.argv) >= 2: + timeout = float(sys.argv[1]) + notify_socket = os.getenv('NOTIFY_SOCKET') + if notify_socket: + retval = onready(notify_socket, timeout) + sys.exit(retval) diff --git a/monasca/openstack/common/threadgroup.py b/monasca/openstack/common/threadgroup.py new file mode 100644 index 000000000..75a79fc7e --- /dev/null +++ b/monasca/openstack/common/threadgroup.py @@ -0,0 +1,147 @@ +# Copyright 2012 Red Hat, Inc. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. +import threading + +import eventlet +from eventlet import greenpool + +from monasca.openstack.common import log as logging +from monasca.openstack.common import loopingcall + + +LOG = logging.getLogger(__name__) + + +def _thread_done(gt, *args, **kwargs): + """Callback function to be passed to GreenThread.link() when we spawn() + Calls the :class:`ThreadGroup` to notify if. + + """ + kwargs['group'].thread_done(kwargs['thread']) + + +class Thread(object): + """Wrapper around a greenthread, that holds a reference to the + :class:`ThreadGroup`. The Thread will notify the :class:`ThreadGroup` when + it has done so it can be removed from the threads list. + """ + def __init__(self, thread, group): + self.thread = thread + self.thread.link(_thread_done, group=group, thread=self) + + def stop(self): + self.thread.kill() + + def wait(self): + return self.thread.wait() + + def link(self, func, *args, **kwargs): + self.thread.link(func, *args, **kwargs) + + +class ThreadGroup(object): + """The point of the ThreadGroup class is to: + + * keep track of timers and greenthreads (making it easier to stop them + when need be). + * provide an easy API to add timers. + """ + def __init__(self, thread_pool_size=10): + self.pool = greenpool.GreenPool(thread_pool_size) + self.threads = [] + self.timers = [] + + def add_dynamic_timer(self, callback, initial_delay=None, + periodic_interval_max=None, *args, **kwargs): + timer = loopingcall.DynamicLoopingCall(callback, *args, **kwargs) + timer.start(initial_delay=initial_delay, + periodic_interval_max=periodic_interval_max) + self.timers.append(timer) + + def add_timer(self, interval, callback, initial_delay=None, + *args, **kwargs): + pulse = loopingcall.FixedIntervalLoopingCall(callback, *args, **kwargs) + pulse.start(interval=interval, + initial_delay=initial_delay) + self.timers.append(pulse) + + def add_thread(self, callback, *args, **kwargs): + gt = self.pool.spawn(callback, *args, **kwargs) + th = Thread(gt, self) + self.threads.append(th) + return th + + def thread_done(self, thread): + self.threads.remove(thread) + + def _stop_threads(self): + current = threading.current_thread() + + # Iterate over a copy of self.threads so thread_done doesn't + # modify the list while we're iterating + for x in self.threads[:]: + if x is current: + # don't kill the current thread. + continue + try: + x.stop() + except Exception as ex: + LOG.exception(ex) + + def stop_timers(self): + for x in self.timers: + try: + x.stop() + except Exception as ex: + LOG.exception(ex) + self.timers = [] + + def stop(self, graceful=False): + """stop function has the option of graceful=True/False. + + * In case of graceful=True, wait for all threads to be finished. + Never kill threads. + * In case of graceful=False, kill threads immediately. + """ + self.stop_timers() + if graceful: + # In case of graceful=True, wait for all threads to be + # finished, never kill threads + self.wait() + else: + # In case of graceful=False(Default), kill threads + # immediately + self._stop_threads() + + def wait(self): + for x in self.timers: + try: + x.wait() + except eventlet.greenlet.GreenletExit: + pass + except Exception as ex: + LOG.exception(ex) + current = threading.current_thread() + + # Iterate over a copy of self.threads so thread_done doesn't + # modify the list while we're iterating + for x in self.threads[:]: + if x is current: + continue + try: + x.wait() + except eventlet.greenlet.GreenletExit: + pass + except Exception as ex: + LOG.exception(ex) diff --git a/monasca/openstack/common/timeutils.py b/monasca/openstack/common/timeutils.py new file mode 100644 index 000000000..c48da95f1 --- /dev/null +++ b/monasca/openstack/common/timeutils.py @@ -0,0 +1,210 @@ +# Copyright 2011 OpenStack Foundation. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +""" +Time related utilities and helper functions. +""" + +import calendar +import datetime +import time + +import iso8601 +import six + + +# ISO 8601 extended time format with microseconds +_ISO8601_TIME_FORMAT_SUBSECOND = '%Y-%m-%dT%H:%M:%S.%f' +_ISO8601_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S' +PERFECT_TIME_FORMAT = _ISO8601_TIME_FORMAT_SUBSECOND + + +def isotime(at=None, subsecond=False): + """Stringify time in ISO 8601 format.""" + if not at: + at = utcnow() + st = at.strftime(_ISO8601_TIME_FORMAT + if not subsecond + else _ISO8601_TIME_FORMAT_SUBSECOND) + tz = at.tzinfo.tzname(None) if at.tzinfo else 'UTC' + st += ('Z' if tz == 'UTC' else tz) + return st + + +def parse_isotime(timestr): + """Parse time from ISO 8601 format.""" + try: + return iso8601.parse_date(timestr) + except iso8601.ParseError as e: + raise ValueError(six.text_type(e)) + except TypeError as e: + raise ValueError(six.text_type(e)) + + +def strtime(at=None, fmt=PERFECT_TIME_FORMAT): + """Returns formatted utcnow.""" + if not at: + at = utcnow() + return at.strftime(fmt) + + +def parse_strtime(timestr, fmt=PERFECT_TIME_FORMAT): + """Turn a formatted time back into a datetime.""" + return datetime.datetime.strptime(timestr, fmt) + + +def normalize_time(timestamp): + """Normalize time in arbitrary timezone to UTC naive object.""" + offset = timestamp.utcoffset() + if offset is None: + return timestamp + return timestamp.replace(tzinfo=None) - offset + + +def is_older_than(before, seconds): + """Return True if before is older than seconds.""" + if isinstance(before, six.string_types): + before = parse_strtime(before).replace(tzinfo=None) + else: + before = before.replace(tzinfo=None) + + return utcnow() - before > datetime.timedelta(seconds=seconds) + + +def is_newer_than(after, seconds): + """Return True if after is newer than seconds.""" + if isinstance(after, six.string_types): + after = parse_strtime(after).replace(tzinfo=None) + else: + after = after.replace(tzinfo=None) + + return after - utcnow() > datetime.timedelta(seconds=seconds) + + +def utcnow_ts(): + """Timestamp version of our utcnow function.""" + if utcnow.override_time is None: + # NOTE(kgriffs): This is several times faster + # than going through calendar.timegm(...) + return int(time.time()) + + return calendar.timegm(utcnow().timetuple()) + + +def utcnow(): + """Overridable version of utils.utcnow.""" + if utcnow.override_time: + try: + return utcnow.override_time.pop(0) + except AttributeError: + return utcnow.override_time + return datetime.datetime.utcnow() + + +def iso8601_from_timestamp(timestamp): + """Returns an iso8601 formatted date from timestamp.""" + return isotime(datetime.datetime.utcfromtimestamp(timestamp)) + + +utcnow.override_time = None + + +def set_time_override(override_time=None): + """Overrides utils.utcnow. + + Make it return a constant time or a list thereof, one at a time. + + :param override_time: datetime instance or list thereof. If not + given, defaults to the current UTC time. + """ + utcnow.override_time = override_time or datetime.datetime.utcnow() + + +def advance_time_delta(timedelta): + """Advance overridden time using a datetime.timedelta.""" + assert utcnow.override_time is not None + try: + for dt in utcnow.override_time: + dt += timedelta + except TypeError: + utcnow.override_time += timedelta + + +def advance_time_seconds(seconds): + """Advance overridden time by seconds.""" + advance_time_delta(datetime.timedelta(0, seconds)) + + +def clear_time_override(): + """Remove the overridden time.""" + utcnow.override_time = None + + +def marshall_now(now=None): + """Make an rpc-safe datetime with microseconds. + + Note: tzinfo is stripped, but not required for relative times. + """ + if not now: + now = utcnow() + return dict(day=now.day, month=now.month, year=now.year, hour=now.hour, + minute=now.minute, second=now.second, + microsecond=now.microsecond) + + +def unmarshall_time(tyme): + """Unmarshall a datetime dict.""" + return datetime.datetime(day=tyme['day'], + month=tyme['month'], + year=tyme['year'], + hour=tyme['hour'], + minute=tyme['minute'], + second=tyme['second'], + microsecond=tyme['microsecond']) + + +def delta_seconds(before, after): + """Return the difference between two timing objects. + + Compute the difference in seconds between two date, time, or + datetime objects (as a float, to microsecond resolution). + """ + delta = after - before + return total_seconds(delta) + + +def total_seconds(delta): + """Return the total seconds of datetime.timedelta object. + + Compute total seconds of datetime.timedelta, datetime.timedelta + doesn't have method total_seconds in Python2.6, calculate it manually. + """ + try: + return delta.total_seconds() + except AttributeError: + return ((delta.days * 24 * 3600) + delta.seconds + + float(delta.microseconds) / (10 ** 6)) + + +def is_soon(dt, window): + """Determines if time is going to happen in the next window seconds. + + :param dt: the time + :param window: minimum seconds to remain to consider the time not soon + + :return: True if expiration is within the given duration + """ + soon = (utcnow() + datetime.timedelta(seconds=window)) + return normalize_time(dt) <= soon diff --git a/monasca/tests/__init__.py b/monasca/tests/__init__.py new file mode 100644 index 000000000..f67f4d817 --- /dev/null +++ b/monasca/tests/__init__.py @@ -0,0 +1,87 @@ +# Copyright 2013 IBM Corp +# +# Author: Tong Li +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +import logging +import os +import tempfile + +import fixtures +import testtools + +_TRUE_VALUES = ('True', 'true', '1', 'yes') +_LOG_FORMAT = "%(levelname)8s [%(name)s] %(message)s" + + +class BaseTestCase(testtools.TestCase): + + def setUp(self): + super(BaseTestCase, self).setUp() + self._set_timeout() + self._fake_output() + self._fake_logs() + self.useFixture(fixtures.NestedTempfile()) + self.useFixture(fixtures.TempHomeDir()) + self.tempdirs = [] + + def _set_timeout(self): + test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0) + try: + test_timeout = int(test_timeout) + except ValueError: + # If timeout value is invalid do not set a timeout. + test_timeout = 0 + if test_timeout > 0: + self.useFixture(fixtures.Timeout(test_timeout, gentle=True)) + + def _fake_output(self): + if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES: + stdout = self.useFixture(fixtures.StringStream('stdout')).stream + self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout)) + if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES: + stderr = self.useFixture(fixtures.StringStream('stderr')).stream + self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr)) + + def _fake_logs(self): + if os.environ.get('OS_DEBUG') in _TRUE_VALUES: + level = logging.DEBUG + else: + level = logging.INFO + capture_logs = os.environ.get('OS_LOG_CAPTURE') in _TRUE_VALUES + if capture_logs: + self.useFixture( + fixtures.FakeLogger( + format=_LOG_FORMAT, + level=level, + nuke_handlers=capture_logs, + ) + ) + else: + logging.basicConfig(format=_LOG_FORMAT, level=level) + + def create_tempfiles(self, files, ext='.conf'): + tempfiles = [] + for (basename, contents) in files: + if not os.path.isabs(basename): + (fd, path) = tempfile.mkstemp(prefix=basename, suffix=ext) + else: + path = basename + ext + fd = os.open(path, os.O_CREAT | os.O_WRONLY) + tempfiles.append(path) + try: + os.write(fd, contents) + finally: + os.close(fd) + return tempfiles \ No newline at end of file diff --git a/requirements.txt b/requirements.txt new file mode 100644 index 000000000..ffc135473 --- /dev/null +++ b/requirements.txt @@ -0,0 +1,9 @@ +falcon>=0.1.9 +pastedeploy>=1.3.3 +simplejson>=2.0.9 +pbr>=0.6,!=0.7,<1.0 +six>=1.7.0 +stevedore>=0.14 +gunicorn>=19.1.0 +oslo.config>=1.2.1 +ujson>=1.33 diff --git a/setup.cfg b/setup.cfg new file mode 100644 index 000000000..3521cfa11 --- /dev/null +++ b/setup.cfg @@ -0,0 +1,45 @@ +[metadata] +name = monasca-api + +# Juno +version = 2014.7 + +summary = OpenStack Monitoring Service +description-file = + README.md +author = OpenStack +author-email = openstack-dev@lists.openstack.org +home-page = http://www.openstack.org/ +classifier = + Environment :: OpenStack + Intended Audience :: Information Technology + Intended Audience :: System Administrators + License :: OSI Approved :: Apache Software License + Operating System :: POSIX :: Linux + Programming Language :: Python + Programming Language :: Python :: 2 + Programming Language :: Python :: 2.7 + +[files] +packages = + monasca + +data_files = + /etc/monasca = + etc/monasca.conf + etc/monasca.ini + +[entry_points] +console_scripts = + monasca-api = monasca.api.server:run + +monasca.dispatcher = + kafka = monasca.dispatcher.kafka_dispatcher:KafkaDispatcher + +paste.filter_factory = + login = monasca.middleware.login:filter_factory + inspector = monasca.middleware.inspector:filter_factory + metric_validator = monasca.middleware.metric_validator:filter_factory + +[pbr] +warnerrors = True diff --git a/setup.py b/setup.py new file mode 100644 index 000000000..ffe71fff0 --- /dev/null +++ b/setup.py @@ -0,0 +1,23 @@ +#!/usr/bin/env python +# Copyright (c) 2013 Hewlett-Packard Development Company, L.P. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or +# implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT +from setuptools import setup + +setup( + setup_requires=['pbr'], + pbr=True, +) diff --git a/test-requirements.txt b/test-requirements.txt new file mode 100644 index 000000000..9378e9086 --- /dev/null +++ b/test-requirements.txt @@ -0,0 +1,22 @@ +# Hacking already pins down pep8, pyflakes and flake8 +hacking>=0.9.2,<0.10 +Babel>=1.3 +coverage>=3.6 +discover +fixtures>=0.3.14 +flake8==2.1.0 +pep8<=1.5.6 +httplib2>=0.7.5 +mock>=1.0 +mox>=0.5.3 +# Docs Requirements +oslosphinx +oslotest +python-subunit>=0.0.18 +sphinx>=1.1.2,!=1.2.0,<1.3 +sphinxcontrib-docbookrestapi +sphinxcontrib-httpdomain +sphinxcontrib-pecanwsme>=0.8 +testrepository>=0.0.18 +testscenarios>=0.4 +testtools>=0.9.34 \ No newline at end of file diff --git a/tox.ini b/tox.ini new file mode 100644 index 000000000..5375cbf55 --- /dev/null +++ b/tox.ini @@ -0,0 +1,42 @@ +[tox] +minversion = 1.6 +skipsdist = True +envlist = py27,py33,pep8 + +[testenv] +deps = -r{toxinidir}/requirements.txt + -r{toxinidir}/test-requirements.txt +install_command = pip install -U --allow-external pytidylib --allow-insecure pytidylib --allow-external netifaces --allow-insecure netifaces {opts} {packages} +usedevelop = True +setenv = VIRTUAL_ENV={envdir} +commands = python setup.py testr --slowest --testr-args='--concurrency 1 {posargs}' +downloadcache = {toxworkdir}/_download +whitelist_externals = bash + +[testenv:cover] +setenv = NOSE_WITH_COVERAGE=1 +commands = + python setup.py testr --coverage \ + --testr-args='^(?!.*test.*coverage).*$' + +[testenv:pep8] +commands = + flake8 monasca + +[testenv:genconfig] + +[testenv:docs] +commands = python setup.py build_sphinx + +[testenv:venv] +commands = {posargs} + +[flake8] +# H305 imports not grouped correctly +ignore = H305 +builtins = _ +exclude=.venv,.git,.tox,dist,doc,./monasca/openstack/common,*lib/python*,*egg,tools,build +show-source = True + +[hacking] +