798 lines
31 KiB
Python
798 lines
31 KiB
Python
# Copyright 2015 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import copy
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import os
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import uuid
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import jsonschema
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from oslo_config import cfg
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from oslo_serialization import jsonutils as json
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import six
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from sahara import conductor
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from sahara.db.templates import utils as u
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from sahara.service.validations import cluster_template_schema as clt
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from sahara.service.validations import node_group_template_schema as ngt
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from sahara.utils import api_validator
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LOG = None
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CONF = None
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# This is broken out to support testability
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def set_logger(log):
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global LOG
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LOG = log
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# This is broken out to support testability
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def set_conf(conf):
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global CONF
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CONF = conf
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ng_validator = api_validator.ApiValidator(ngt.NODE_GROUP_TEMPLATE_SCHEMA)
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ct_validator = api_validator.ApiValidator(clt.CLUSTER_TEMPLATE_SCHEMA)
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# Options that we allow to be replaced in a node group template
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node_group_template_opts = [
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cfg.StrOpt('image_id',
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help='Image id field for a node group template.'),
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cfg.StrOpt('flavor_id',
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help='Flavor id field for a node group template.'),
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cfg.StrOpt('floating_ip_pool',
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help='Floating ip pool field for a node group template.')
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]
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# Options that we allow to be replaced in a cluster template
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cluster_template_opts = [
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cfg.StrOpt('default_image_id',
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help='Default image id field for a cluster template.'),
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cfg.StrOpt('neutron_management_network',
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help='Neutron management network '
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'field for a cluster template.')]
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all_template_opts = node_group_template_opts + cluster_template_opts
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node_group_template_opt_names = [o.name for o in node_group_template_opts]
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cluster_template_opt_names = [o.name for o in cluster_template_opts]
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# This is a local exception class that is used to exit routines
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# in cases where error information has already been logged.
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# It is caught and suppressed everywhere it is used.
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class Handled(Exception):
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pass
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class Context(object):
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'''Create a pseudo Context object
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Since this tool does not use the REST interface, we
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do not have a request from which to build a Context.
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'''
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def __init__(self, is_admin=False, tenant_id=None):
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self.is_admin = is_admin
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self.tenant_id = tenant_id
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def check_usage_of_existing(ctx, ng_templates, cl_templates):
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'''Determine if any of the specified templates are in use
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This method searches for the specified templates by name and
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determines whether or not any existing templates are in use
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by a cluster or cluster template. Returns True if any of
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the templates are in use.
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:param ng_templates: A list of dictionaries. Each dictionary
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has a "template" entry that represents
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a node group template.
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:param cl_templates: A list of dictionaries. Each dictionary
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has a "template" entry that represents
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a cluster template
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:returns: True if any of the templates are in use, False otherwise
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'''
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error = False
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clusters = conductor.API.cluster_get_all(ctx)
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for ng_info in ng_templates:
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ng = u.find_node_group_template_by_name(ctx,
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ng_info["template"]["name"])
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if ng:
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cluster_users, template_users = u.check_node_group_template_usage(
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ng["id"], clusters)
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if cluster_users:
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LOG.warning("Node group template {name} "
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"in use by clusters {clusters}".format(
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name=ng["name"], clusters=cluster_users))
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if template_users:
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LOG.warning("Node group template {name} "
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"in use by cluster templates {templates}".format(
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name=ng["name"], templates=template_users))
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if cluster_users or template_users:
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LOG.warning("Update of node group template "
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"{name} is not allowed".format(name=ng["name"]))
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error = True
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for cl_info in cl_templates:
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cl = u.find_cluster_template_by_name(ctx, cl_info["template"]["name"])
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if cl:
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cluster_users = u.check_cluster_template_usage(cl["id"], clusters)
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if cluster_users:
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LOG.warning("Cluster template {name} "
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"in use by clusters {clusters}".format(
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name=cl["name"], clusters=cluster_users))
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LOG.warning("Update of cluster template "
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"{name} is not allowed".format(name=cl["name"]))
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error = True
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return error
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def log_skipping_dir(path, reason=""):
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if reason:
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reason = ", " + reason
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LOG.warning("Skipping processing for {dir}{reason}".format(
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dir=path, reason=reason))
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def check_cluster_templates_valid(ng_templates, cl_templates):
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# Check that if name references to node group templates
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# are replaced with a uuid value that the cluster template
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# passes JSON validation. We don't have the real uuid yet,
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# but this will allow the validation test.
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if ng_templates:
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dummy_uuid = uuid.uuid4()
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ng_ids = {ng["template"]["name"]: dummy_uuid for ng in ng_templates}
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else:
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ng_ids = {}
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for cl in cl_templates:
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template = copy.deepcopy(cl["template"])
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u.substitute_ng_ids(template, ng_ids)
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try:
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ct_validator.validate(template)
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except jsonschema.ValidationError as e:
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LOG.warning("Validation for {path} failed, {reason}".format(
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path=cl["path"], reason=e))
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return True
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return False
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def add_config_section(section_name, options):
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if section_name and hasattr(CONF, section_name):
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# It's already been added
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return
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if section_name:
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group = cfg.OptGroup(name=section_name)
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CONF.register_group(group)
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CONF.register_opts(options, group)
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else:
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# Add options to the default section
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CONF.register_opts(options)
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def add_config_section_for_template(template):
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'''Register a config section based on the template values
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Check to see if the configuration files contain a section
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that corresponds to the template. If an appropriate section
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can be found, register options for the template so that the
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config values can be read and applied to the template via
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substitution (oslo supports registering groups and options
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at any time, before or after the config files are parsed).
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Corresponding section names may be of the following forms:
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<template_name>, example "hdp-2.0.6-master"
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This is useful when a template naming convention is being used,
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so that the template name is already unambiguous
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<plugin_name>_<hadoop_version>_<template_name>, example "hdp_2.0.6_master"
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This can be used if there is a name collision between templates
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<plugin_name>_<hadoop_version>, example "hdp_2.0.6"
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<plugin_name>, example "hdp"
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DEFAULT
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Sections are tried in the order given above.
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Since the first two section naming forms refer to a specific
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template by name, options are added based on template type.
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However, the other section naming forms may map to node group templates
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or cluster templates, so options for both are added.
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'''
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sections = list(CONF.list_all_sections())
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unique_name = "{name}".format(**template)
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fullname = "{plugin_name}_{hadoop_version}_{name}".format(**template)
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plugin_version = "{plugin_name}_{hadoop_version}".format(**template)
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plugin = "{plugin_name}".format(**template)
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section_name = None
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if unique_name in sections:
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section_name = unique_name
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elif fullname in sections:
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section_name = fullname
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if section_name:
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if u.is_node_group(template):
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opts = node_group_template_opts
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else:
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opts = cluster_template_opts
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else:
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if plugin_version in sections:
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section_name = plugin_version
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elif plugin in sections:
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section_name = plugin
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opts = all_template_opts
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add_config_section(section_name, opts)
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return section_name
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def substitute_config_values(configs, template, path):
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if u.is_node_group(template):
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opt_names = node_group_template_opt_names
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else:
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opt_names = cluster_template_opt_names
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for opt, value in six.iteritems(configs):
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if opt in opt_names and opt in template:
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if value is None:
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template[opt] = None
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else:
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# Use args to allow for keyword arguments to format
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args = {opt: value}
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template[opt] = template[opt].format(**args)
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def get_configs(section):
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if section is None:
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return dict(CONF)
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return dict(CONF[section])
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def get_plugin_name():
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if CONF.command.name == "update" and (
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not CONF.command.plugin_name and (
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hasattr(CONF, "plugins") and CONF.plugins)):
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return CONF.plugins
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return CONF.command.plugin_name
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def process_files(dirname, files):
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node_groups = []
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clusters = []
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plugin_name = get_plugin_name()
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try:
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for fname in files:
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if os.path.splitext(fname)[1] == ".json":
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fpath = os.path.join(dirname, fname)
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with open(fpath, 'r') as fp:
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try:
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template = json.load(fp)
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except ValueError as e:
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LOG.warning("Error processing {path}, {reason}".format(
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path=fpath, reason=e))
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raise Handled("error processing files")
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# If this file doesn't contain basic fields, skip it.
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# If we are filtering on plugin and version make
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# sure the file is one that we want
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if not u.check_basic_fields(template) or (
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not u.check_plugin_name_and_version(
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template,
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plugin_name,
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CONF.command.plugin_version)):
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continue
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# Look through the sections in CONF and register
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# options for this template if we find a section
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# related to the template (ie, plugin, version, name)
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section = add_config_section_for_template(template)
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LOG.debug("Using config section {section} "
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"for {path}".format(section=section, path=fpath))
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# Attempt to resolve substitutions using the config section
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substitute_config_values(get_configs(section),
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template, fpath)
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file_entry = {'template': template,
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'path': fpath}
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if u.is_node_group(template):
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# JSON validator
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try:
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ng_validator.validate(template)
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except jsonschema.ValidationError as e:
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LOG.warning("Validation for {path} failed, "
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"{reason}".format(path=fpath,
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reason=e))
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raise Handled(
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"node group template validation failed")
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node_groups.append(file_entry)
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LOG.debug("Added {path} to node group "
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"template files".format(path=fpath))
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else:
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clusters.append(file_entry)
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LOG.debug("Added {path} to cluster template "
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"files".format(path=fpath))
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except Handled as e:
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log_skipping_dir(dirname, e.message)
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node_groups = []
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clusters = []
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except Exception as e:
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log_skipping_dir(dirname,
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"unhandled exception, {reason}".format(reason=e))
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node_groups = []
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clusters = []
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return node_groups, clusters
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def delete_node_group_template(ctx, template, rollback=False):
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rollback_msg = " on rollback" if rollback else ""
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# If we are not deleting something that we just created,
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# do usage checks to ensure that the template is not in
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# use by a cluster or a cluster template
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if not rollback:
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clusters = conductor.API.cluster_get_all(ctx)
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cluster_templates = conductor.API.cluster_template_get_all(ctx)
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cluster_users, template_users = u.check_node_group_template_usage(
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template["id"], clusters, cluster_templates)
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if cluster_users:
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LOG.warning("Node group template {info} "
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"in use by clusters {clusters}".format(
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info=u.name_and_id(template),
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clusters=cluster_users))
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if template_users:
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LOG.warning("Node group template {info} "
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"in use by cluster templates {templates}".format(
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info=u.name_and_id(template),
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templates=template_users))
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if cluster_users or template_users:
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LOG.warning("Deletion of node group template "
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"{info} failed".format(info=u.name_and_id(template)))
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return
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try:
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conductor.API.node_group_template_destroy(ctx, template["id"],
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ignore_default=True)
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except Exception as e:
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LOG.warning("Deletion of node group template {info} failed{rollback}"
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", {reason}".format(info=u.name_and_id(template),
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reason=e,
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rollback=rollback_msg))
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else:
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LOG.info("Deleted node group template {info}{rollback}".format(
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info=u.name_and_id(template), rollback=rollback_msg))
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def reverse_node_group_template_creates(ctx, templates):
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for template in templates:
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delete_node_group_template(ctx, template, rollback=True)
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def reverse_node_group_template_updates(ctx, update_info):
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for template, values in update_info:
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# values are the original values that we overwrote in the update
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try:
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conductor.API.node_group_template_update(ctx,
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template["id"], values,
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ignore_default=True)
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except Exception as e:
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LOG.warning("Rollback of update for node group "
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"template {info} failed, {reason}".format(
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info=u.name_and_id(template),
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reason=e))
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else:
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LOG.info("Rolled back update for "
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"node group template {info}".format(
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info=u.name_and_id(template)))
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def add_node_group_templates(ctx, node_groups):
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error = False
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ng_info = {"ids": {},
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"created": [],
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"updated": []}
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def do_reversals(ng_info):
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reverse_node_group_template_updates(ctx, ng_info["updated"])
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reverse_node_group_template_creates(ctx, ng_info["created"])
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return {}, True
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try:
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for ng in node_groups:
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template = ng['template']
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current = u.find_node_group_template_by_name(ctx, template['name'])
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if current:
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# Track what we see in the current template that is different
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# from our update values. Save it for possible rollback.
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# Note, this is not perfect because it does not recurse through
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# nested structures to get an exact diff, but it ensures that
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# we track only fields that are valid in the JSON schema
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updated_fields = u.value_diff(current.to_dict(), template)
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# Always attempt to update. Since the template value is a
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# combination of JSON and config values, there is no useful
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# timestamp we can use to skip an update.
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# If sqlalchemy determines no change in fields, it will not
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# mark it as updated.
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try:
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template = conductor.API.node_group_template_update(
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ctx, current['id'], template, ignore_default=True)
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except Exception as e:
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LOG.warning("Update of node group template {info} "
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"failed, {reason}".format(
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info=u.name_and_id(current),
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reason=e))
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raise Handled()
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if template['updated_at'] != current['updated_at']:
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ng_info["updated"].append((template, updated_fields))
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LOG.info("Updated node group template {info} "
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"from {path}".format(
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info=u.name_and_id(template),
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path=ng["path"]))
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else:
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LOG.debug("No change to node group template {info} "
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"from {path}".format(
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info=u.name_and_id(current),
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path=ng['path']))
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else:
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template['is_default'] = True
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try:
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template = conductor.API.node_group_template_create(
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ctx, template)
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except Exception as e:
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LOG.warning("Creation of node group template "
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"from {path} failed, {reason}".format(
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path=ng['path'], reason=e))
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raise Handled()
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ng_info["created"].append(template)
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LOG.info("Created node group template {info} "
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"from {path}".format(info=u.name_and_id(template),
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path=ng["path"]))
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# For the purposes of substituion we need a dict of id by name
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ng_info["ids"][template['name']] = template['id']
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except Handled:
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ng_info, error = do_reversals(ng_info)
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except Exception as e:
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LOG.warning("Unhandled exception while processing "
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"node group templates, {reason}".format(reason=e))
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ng_info, error = do_reversals(ng_info)
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return ng_info, error
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def delete_cluster_template(ctx, template, rollback=False):
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rollback_msg = " on rollback" if rollback else ""
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# If we are not deleting something that we just created,
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# do usage checks to ensure that the template is not in
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# use by a cluster
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if not rollback:
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clusters = conductor.API.cluster_get_all(ctx)
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cluster_users = u.check_cluster_template_usage(template["id"],
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clusters)
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if cluster_users:
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LOG.warning("Cluster template {info} "
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"in use by clusters {clusters}".format(
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info=u.name_and_id(template),
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clusters=cluster_users))
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LOG.warning("Deletion of cluster template "
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"{info} failed".format(info=u.name_and_id(template)))
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return
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try:
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conductor.API.cluster_template_destroy(ctx, template["id"],
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ignore_default=True)
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except Exception as e:
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LOG.warning("Deletion of cluster template {info} failed{rollback}"
|
|
", {reason}".format(info=u.name_and_id(template),
|
|
reason=e,
|
|
rollback=rollback_msg))
|
|
else:
|
|
LOG.info("Deleted cluster template {info}{rollback}".format(
|
|
info=u.name_and_id(template), rollback=rollback_msg))
|
|
|
|
|
|
def reverse_cluster_template_creates(ctx, templates):
|
|
for template in templates:
|
|
delete_cluster_template(ctx, template, rollback=True)
|
|
|
|
|
|
def reverse_cluster_template_updates(ctx, update_info):
|
|
for template, values in update_info:
|
|
# values are the original values that we overwrote in the update
|
|
try:
|
|
conductor.API.cluster_template_update(ctx,
|
|
template["id"], values,
|
|
ignore_default=True)
|
|
except Exception as e:
|
|
LOG.warning("Rollback of update for cluster "
|
|
"template {info} failed, {reason}".format(
|
|
info=u.name_and_id(template),
|
|
reason=e))
|
|
else:
|
|
LOG.info("Rolled back update for "
|
|
"cluster template {info}".format(
|
|
info=u.name_and_id(template)))
|
|
|
|
|
|
def add_cluster_templates(ctx, clusters, ng_dict):
|
|
'''Add cluster templates to the database.
|
|
|
|
The value of any node_group_template_id fields in cluster
|
|
templates which reference a node group template in ng_dict by name
|
|
will be changed to the id of the node group template.
|
|
|
|
If there is an error in creating or updating a template, any templates
|
|
that have already been created will be delete and any updates will
|
|
be reversed.
|
|
|
|
:param clusters: a list of dictionaries. Each dictionary
|
|
has a "template" entry holding the cluster template
|
|
and a "path" entry holding the path of the file
|
|
from which the template was read.
|
|
:param ng_dict: a dictionary of node group template ids keyed
|
|
by node group template names
|
|
'''
|
|
|
|
error = False
|
|
created = []
|
|
updated = []
|
|
|
|
def do_reversals(created, updated):
|
|
reverse_cluster_template_updates(ctx, updated)
|
|
reverse_cluster_template_creates(ctx, created)
|
|
return True
|
|
|
|
try:
|
|
for cl in clusters:
|
|
template = cl['template']
|
|
|
|
# Fix up node_group_template_id fields
|
|
u.substitute_ng_ids(template, ng_dict)
|
|
|
|
# Name + tenant_id is unique, so search by name
|
|
current = u.find_cluster_template_by_name(ctx, template['name'])
|
|
if current:
|
|
|
|
# Track what we see in the current template that is different
|
|
# from our update values. Save it for possible rollback.
|
|
# Note, this is not perfect because it does not recurse through
|
|
# nested structures to get an exact diff, but it ensures that
|
|
# we track only fields that are valid in the JSON schema
|
|
updated_fields = u.value_diff(current.to_dict(), template)
|
|
|
|
# Always attempt to update. Since the template value is a
|
|
# combination of JSON and config values, there is no useful
|
|
# timestamp we can use to skip an update.
|
|
# If sqlalchemy determines no change in fields, it will not
|
|
# mark it as updated.
|
|
|
|
# TODO(tmckay): why when I change the count in an
|
|
# entry in node_groups does it not count as an update?
|
|
# Probably a bug
|
|
try:
|
|
template = conductor.API.cluster_template_update(
|
|
ctx, current['id'], template, ignore_default=True)
|
|
except Exception as e:
|
|
LOG.warning("Update of cluster template {info} "
|
|
"failed, {reason}".format(
|
|
info=u.name_and_id(current), reason=e))
|
|
raise Handled()
|
|
|
|
if template['updated_at'] != current['updated_at']:
|
|
updated.append((template, updated_fields))
|
|
LOG.info("Updated cluster template {info} "
|
|
"from {path}".format(
|
|
info=u.name_and_id(template),
|
|
path=cl['path']))
|
|
else:
|
|
LOG.debug("No change to cluster template {info} "
|
|
"from {path}".format(info=u.name_and_id(current),
|
|
path=cl["path"]))
|
|
else:
|
|
template["is_default"] = True
|
|
try:
|
|
template = conductor.API.cluster_template_create(ctx,
|
|
template)
|
|
except Exception as e:
|
|
LOG.warning("Creation of cluster template "
|
|
"from {path} failed, {reason}".format(
|
|
path=cl['path'],
|
|
reason=e))
|
|
raise Handled()
|
|
|
|
created.append(template)
|
|
LOG.info("Created cluster template {info} from {path}".format(
|
|
info=u.name_and_id(template), path=cl['path']))
|
|
|
|
except Handled:
|
|
error = do_reversals(created, updated)
|
|
|
|
except Exception as e:
|
|
LOG.warning("Unhandled exception while processing "
|
|
"cluster templates, {reason}".format(reason=e))
|
|
error = do_reversals(created, updated)
|
|
|
|
return error
|
|
|
|
|
|
def do_update():
|
|
'''Create or update default templates for the specified tenant.
|
|
|
|
Looks for '.json' files beginning at the specified starting
|
|
directory (--directory CLI option) and descending
|
|
through subdirectories by default.
|
|
|
|
The .json files represent cluster templates or node group
|
|
templates. All '.json' files at the same directory level are treated
|
|
as a set. Cluster templates may reference node group templates
|
|
in the same set.
|
|
|
|
If an error occurs in processing a set, skip it and continue.
|
|
|
|
If creation of cluster templates fails, any node group templates
|
|
in the set that were already created will be deleted.
|
|
'''
|
|
|
|
ctx = Context(tenant_id=CONF.command.tenant_id)
|
|
start_dir = os.path.abspath(CONF.command.directory)
|
|
|
|
for root, dirs, files in os.walk(start_dir):
|
|
|
|
# Find all the template files and identify them as node_group
|
|
# or cluster templates. If there is an exception in
|
|
# processing the set, return empty lists.
|
|
node_groups, clusters = process_files(root, files)
|
|
|
|
# Now that we know what the valid node group templates are,
|
|
# we can validate the cluster templates as well.
|
|
if check_cluster_templates_valid(node_groups, clusters):
|
|
log_skipping_dir(root, "error processing cluster templates")
|
|
|
|
# If there are existing default templates that match the names
|
|
# in the template files, do usage checks here to detect update
|
|
# failures early (we can't update a template in use)
|
|
elif check_usage_of_existing(ctx, node_groups, clusters):
|
|
log_skipping_dir(root, "templates in use")
|
|
else:
|
|
ng_info, error = add_node_group_templates(ctx, node_groups)
|
|
if error:
|
|
log_skipping_dir(root, "error processing node group templates")
|
|
|
|
elif add_cluster_templates(ctx, clusters, ng_info["ids"]):
|
|
log_skipping_dir(root, "error processing cluster templates")
|
|
|
|
# Cluster templates failed so remove the node group templates
|
|
reverse_node_group_template_updates(ctx, ng_info["updated"])
|
|
reverse_node_group_template_creates(ctx, ng_info["created"])
|
|
|
|
if CONF.command.norecurse:
|
|
break
|
|
|
|
|
|
def do_delete():
|
|
'''Delete default templates in the specified tenant
|
|
|
|
Deletion uses the --plugin-name and --plugin-version options
|
|
as filters.
|
|
|
|
Only templates with 'is_default=True' will be deleted.
|
|
'''
|
|
|
|
ctx = Context(tenant_id=CONF.command.tenant_id)
|
|
|
|
for plugin in get_plugin_name():
|
|
|
|
kwargs = {'is_default': True}
|
|
kwargs['plugin_name'] = plugin
|
|
|
|
# Delete cluster templates first for the sake of usage checks
|
|
lst = conductor.API.cluster_template_get_all(ctx, **kwargs)
|
|
for l in lst:
|
|
if not u.check_plugin_version(l, CONF.command.plugin_version):
|
|
continue
|
|
delete_cluster_template(ctx, l)
|
|
|
|
lst = conductor.API.node_group_template_get_all(ctx, **kwargs)
|
|
for l in lst:
|
|
if not u.check_plugin_version(l, CONF.command.plugin_version):
|
|
continue
|
|
delete_node_group_template(ctx, l)
|
|
|
|
|
|
def do_node_group_template_delete():
|
|
ctx = Context(tenant_id=CONF.command.tenant_id)
|
|
|
|
t = u.find_node_group_template_by_name(ctx, CONF.command.template_name)
|
|
if t:
|
|
delete_node_group_template(ctx, t)
|
|
else:
|
|
LOG.warning("Deletion of node group template {name} failed, "
|
|
"no such template".format(name=CONF.command.template_name))
|
|
|
|
|
|
def do_node_group_template_delete_by_id():
|
|
ctx = Context(is_admin=True)
|
|
|
|
# Make sure it's a default
|
|
t = conductor.API.node_group_template_get(ctx, CONF.command.id)
|
|
if t:
|
|
if t["is_default"]:
|
|
delete_node_group_template(ctx, t)
|
|
else:
|
|
LOG.warning("Deletion of node group template {info} skipped, "
|
|
"not a default template".format(info=u.name_and_id(t)))
|
|
else:
|
|
LOG.warning("Deletion of node group template {id} failed, "
|
|
"no such template".format(id=CONF.command.id))
|
|
|
|
|
|
def do_cluster_template_delete():
|
|
ctx = Context(tenant_id=CONF.command.tenant_id)
|
|
|
|
t = u.find_cluster_template_by_name(ctx, CONF.command.template_name)
|
|
if t:
|
|
delete_cluster_template(ctx, t)
|
|
else:
|
|
LOG.warning("Deletion of cluster template {name} failed, "
|
|
"no such template".format(name=CONF.command.template_name))
|
|
|
|
|
|
def do_cluster_template_delete_by_id():
|
|
ctx = Context(is_admin=True)
|
|
|
|
# Make sure it's a default
|
|
t = conductor.API.cluster_template_get(ctx, CONF.command.id)
|
|
if t:
|
|
if t["is_default"]:
|
|
delete_cluster_template(ctx, t)
|
|
else:
|
|
LOG.warning("Deletion of cluster template {info} skipped, "
|
|
"not a default template".format(info=u.name_and_id(t)))
|
|
else:
|
|
LOG.warning("Deletion of cluster template {id} failed, "
|
|
"no such template".format(id=CONF.command.id))
|