3f48e24dc4
Introduce execution events and notification server and plugins for publishing these events for consumers. Event notification is defined per workflow execution and can be configured to notify on all the events or only for specific events. Change-Id: I9820bdc4792a374dad9ad5310f84cd7aaddab8ca Implements: blueprint mistral-execution-event-subscription
82 lines
2.0 KiB
Python
82 lines
2.0 KiB
Python
# Copyright 2018 - Extreme Networks, 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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#
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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 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 six
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from oslo_log import log as logging
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from stevedore import driver
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LOG = logging.getLogger(__name__)
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_NOTIFIERS = {}
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_NOTIFICATION_PUBLISHERS = {}
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def cleanup():
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global _NOTIFIERS
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global _NOTIFICATION_PUBLISHERS
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_NOTIFIERS = {}
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_NOTIFICATION_PUBLISHERS = {}
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def get_notifier(notifier_name):
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global _NOTIFIERS
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if not _NOTIFIERS.get(notifier_name):
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mgr = driver.DriverManager(
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'mistral.notifiers',
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notifier_name,
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invoke_on_load=True
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)
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_NOTIFIERS[notifier_name] = mgr.driver
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return _NOTIFIERS[notifier_name]
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def get_notification_publisher(publisher_name):
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global _NOTIFICATION_PUBLISHERS
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if not _NOTIFICATION_PUBLISHERS.get(publisher_name):
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mgr = driver.DriverManager(
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'mistral.notification.publishers',
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publisher_name,
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invoke_on_load=True
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)
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_NOTIFICATION_PUBLISHERS[publisher_name] = mgr.driver
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return _NOTIFICATION_PUBLISHERS[publisher_name]
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@six.add_metaclass(abc.ABCMeta)
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class Notifier(object):
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"""Notifier interface."""
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@abc.abstractmethod
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def notify(self, ex_id, data, event, timestamp, **kwargs):
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raise NotImplementedError()
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@six.add_metaclass(abc.ABCMeta)
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class NotificationPublisher(object):
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"""Notifier plugin interface."""
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@abc.abstractmethod
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def publish(self, ex_id, data, event, timestamp, **kwargs):
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raise NotImplementedError()
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