125 lines
4.0 KiB
Python
125 lines
4.0 KiB
Python
# 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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#
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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 abc
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import copy
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import logging
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import jsonschema
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import six
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from os_faults.api import base_driver
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from os_faults.api import error
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from os_faults.api import node_collection
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from os_faults.api import power_management
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from os_faults import registry
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LOG = logging.getLogger(__name__)
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@six.add_metaclass(abc.ABCMeta)
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class CloudManagement(base_driver.BaseDriver):
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SERVICES = {}
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SUPPORTED_NETWORKS = []
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NODE_CLS = node_collection.NodeCollection
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def __init__(self):
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self.power_manager = power_management.PowerManager()
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self.node_discover = None
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self.services = copy.deepcopy(self.SERVICES)
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def add_power_management(self, driver):
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self.power_manager.add_driver(driver)
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def set_node_discover(self, node_discover):
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self.node_discover = node_discover
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def update_services(self, services):
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self.services.update(services)
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def validate_services(self):
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for service_name, serive_conf in self.services.items():
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serive_cls = registry.get_driver(serive_conf["driver"])
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jsonschema.validate(serive_conf['args'], serive_cls.CONFIG_SCHEMA)
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@abc.abstractmethod
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def verify(self):
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"""Verify connection to the cloud.
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"""
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def get_nodes(self, fqdns=None):
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"""Get nodes in the cloud
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This function returns NodesCollection representing all nodes in the
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cloud or only those that has specified FQDNs.
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:param fqdns list of FQDNs or None to retrieve all nodes
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:return: NodesCollection
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"""
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if self.node_discover is None:
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raise error.OSFError(
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'node_discover is not specified and "{}" '
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'driver does not support discovering'.format(self.NAME))
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hosts = self.node_discover.discover_hosts()
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nodes = self.NODE_CLS(cloud_management=self, hosts=hosts)
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if fqdns:
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LOG.debug('Trying to find nodes with FQDNs: %s', fqdns)
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nodes = nodes.filter(lambda node: node.fqdn in fqdns)
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LOG.debug('The following nodes were found: %s', nodes.hosts)
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return nodes
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def get_service(self, name):
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"""Get service with specified name
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:param name: name of the service
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:return: Service
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"""
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if name not in self.services:
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raise error.ServiceError(
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'{} driver does not support {!r} service'.format(
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self.NAME.title(), name))
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config = self.services[name]
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klazz = registry.get_driver(config["driver"])
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return klazz(node_cls=self.NODE_CLS, cloud_management=self,
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service_name=name, config=config["args"],
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hosts=config.get('hosts'))
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@abc.abstractmethod
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def execute_on_cloud(self, hosts, task, raise_on_error=True):
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"""Execute task on specified hosts within the cloud.
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:param hosts: List of host FQDNs
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:param task: Ansible task
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:param raise_on_error: throw exception in case of error
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:return: Ansible execution result (list of records)
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"""
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@classmethod
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def list_supported_services(cls):
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"""Lists all services supported by this driver
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:return: [String] list of service names
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"""
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return cls.SERVICES.keys()
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@classmethod
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def list_supported_networks(cls):
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"""Lists all networks supported by nodes returned by this driver
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:return: [String] list of network names
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"""
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return cls.SUPPORTED_NETWORKS
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