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# Licensed to the StackStorm, Inc ('StackStorm') under one or more |
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# contributor license agreements. See the NOTICE file distributed with |
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# this work for additional information regarding copyright ownership. |
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# The ASF licenses this file to You under the Apache License, Version 2.0 |
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# (the "License"); you may not use this file except in compliance with |
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# the License. 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 ast |
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import copy |
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import json |
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import re |
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import retrying |
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import six |
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from oslo_config import cfg |
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from mistralclient.api import client as mistral |
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from st2common.constants import action as action_constants |
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from st2common import log as logging |
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from st2common.callback import base as callback |
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from st2common.util.workflow import mistral as utils |
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LOG = logging.getLogger(__name__) |
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STATUS_MAP = { |
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action_constants.LIVEACTION_STATUS_REQUESTED: 'RUNNING', |
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action_constants.LIVEACTION_STATUS_SCHEDULED: 'RUNNING', |
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action_constants.LIVEACTION_STATUS_DELAYED: 'RUNNING', |
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action_constants.LIVEACTION_STATUS_RUNNING: 'RUNNING', |
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action_constants.LIVEACTION_STATUS_SUCCEEDED: 'SUCCESS', |
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action_constants.LIVEACTION_STATUS_FAILED: 'ERROR', |
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action_constants.LIVEACTION_STATUS_TIMED_OUT: 'ERROR', |
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action_constants.LIVEACTION_STATUS_ABANDONED: 'ERROR', |
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action_constants.LIVEACTION_STATUS_CANCELING: 'CANCELLED', |
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action_constants.LIVEACTION_STATUS_CANCELED: 'CANCELLED', |
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action_constants.LIVEACTION_STATUS_PAUSING: 'PAUSED', |
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action_constants.LIVEACTION_STATUS_PAUSED: 'PAUSED', |
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action_constants.LIVEACTION_STATUS_RESUMING: 'RUNNING' |
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} |
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MISTRAL_ACCEPTED_STATES = copy.deepcopy(action_constants.LIVEACTION_COMPLETED_STATES) |
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MISTRAL_ACCEPTED_STATES += [action_constants.LIVEACTION_STATUS_PAUSED] |
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def get_instance(): |
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return MistralCallbackHandler |
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def get_action_execution_id_from_url(url): |
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match = re.search('(.+)/action_executions/(.+)', url) |
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if not match or len(match.groups()) != 2: |
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raise ValueError('Unable to extract the action execution ID ' |
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'from the callback URL (%s).' % (url)) |
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return match.group(2) |
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class MistralCallbackHandler(callback.AsyncActionExecutionCallbackHandler): |
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@classmethod |
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@retrying.retry( |
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retry_on_exception=utils.retry_on_exceptions, |
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wait_exponential_multiplier=cfg.CONF.mistral.retry_exp_msec, |
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wait_exponential_max=cfg.CONF.mistral.retry_exp_max_msec, |
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stop_max_delay=cfg.CONF.mistral.retry_stop_max_msec) |
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def _update_action_execution(cls, url, data): |
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action_execution_id = get_action_execution_id_from_url(url) |
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LOG.info('Sending callback to %s with data %s.', url, data) |
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client = mistral.client( |
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mistral_url=cfg.CONF.mistral.v2_base_url, |
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username=cfg.CONF.mistral.keystone_username, |
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api_key=cfg.CONF.mistral.keystone_password, |
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project_name=cfg.CONF.mistral.keystone_project_name, |
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auth_url=cfg.CONF.mistral.keystone_auth_url, |
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cacert=cfg.CONF.mistral.cacert, |
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insecure=cfg.CONF.mistral.insecure) |
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client.action_executions.update(action_execution_id, **data) |
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@classmethod |
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def _encode(cls, value): |
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if isinstance(value, dict): |
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return {k: cls._encode(v) for k, v in six.iteritems(value)} |
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elif isinstance(value, list): |
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return [cls._encode(item) for item in value] |
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elif isinstance(value, six.string_types): |
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try: |
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value = value.decode('utf-8') |
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except Exception: |
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LOG.exception('Unable to decode value to utf-8.') |
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try: |
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value = value.encode('unicode_escape') |
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except Exception: |
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LOG.exception('Unable to unicode escape value.') |
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return value |
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else: |
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return value |
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@classmethod |
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def callback(cls, url, context, status, result): |
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if status not in MISTRAL_ACCEPTED_STATES: |
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LOG.warning('Unable to callback %s because status "%s" is not supported.', url, status) |
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return |
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try: |
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if isinstance(result, basestring) and len(result) > 0 and result[0] in ['{', '[']: |
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value = ast.literal_eval(result) |
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if type(value) in [dict, list]: |
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result = value |
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result = cls._encode(result) |
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output = json.dumps(result) if type(result) in [dict, list] else str(result) |
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output = output.replace('\\\\\\\\u', '\\\\u') |
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data = {'state': STATUS_MAP[status], 'output': output} |
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cls._update_action_execution(url, data) |
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except Exception as e: |
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LOG.exception(e) |
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StackStorm /
st2
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