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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 eventlet |
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import six |
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from collections import defaultdict |
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from kombu import Connection |
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from st2common.query.base import QueryContext |
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from st2common import log as logging |
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from st2common.models.db.executionstate import ActionExecutionStateDB |
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from st2common.persistence.executionstate import ActionExecutionState |
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from st2common.transport import actionexecutionstate, consumers, publishers |
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from st2common.transport import utils as transport_utils |
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from st2common.util.loader import register_query_module |
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LOG = logging.getLogger(__name__) |
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ACTIONSTATE_WORK_Q = actionexecutionstate.get_queue('st2.resultstracker.work', |
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routing_key=publishers.CREATE_RK) |
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class ResultsTracker(consumers.MessageHandler): |
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message_type = ActionExecutionStateDB |
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def __init__(self, connection, queues): |
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super(ResultsTracker, self).__init__(connection, queues) |
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self._queriers = {} |
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self._query_threads = [] |
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self._failed_imports = set() |
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def start(self, wait=False): |
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self._bootstrap() |
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super(ResultsTracker, self).start(wait=wait) |
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def wait(self): |
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super(ResultsTracker, self).wait() |
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for thread in self._query_threads: |
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thread.wait() |
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def shutdown(self): |
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super(ResultsTracker, self).shutdown() |
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LOG.info('Stats from queriers:') |
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self._print_stats() |
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def _print_stats(self): |
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for _, querier in six.iteritems(self._queriers): |
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if querier: |
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querier.print_stats() |
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def _bootstrap(self): |
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all_states = ActionExecutionState.get_all() |
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LOG.info('Found %d pending states in db.' % len(all_states)) |
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query_contexts_dict = defaultdict(list) |
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for state_db in all_states: |
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try: |
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context = QueryContext.from_model(state_db) |
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except: |
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LOG.exception('Invalid state object: %s', state_db) |
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continue |
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query_module_name = state_db.query_module |
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querier = self.get_querier(query_module_name) |
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if querier is not None: |
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query_contexts_dict[querier].append(context) |
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for querier, contexts in six.iteritems(query_contexts_dict): |
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LOG.info('Found %d pending actions for query module %s', len(contexts), querier) |
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querier.add_queries(query_contexts=contexts) |
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def process(self, query_context): |
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querier = self.get_querier(query_context.query_module) |
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context = QueryContext.from_model(query_context) |
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querier.add_queries(query_contexts=[context]) |
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return |
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def get_querier(self, query_module_name): |
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if (query_module_name not in self._queriers and |
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query_module_name not in self._failed_imports): |
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try: |
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query_module = register_query_module(query_module_name) |
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except: |
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LOG.exception('Failed importing query module: %s', query_module_name) |
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self._failed_imports.add(query_module_name) |
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self._queriers[query_module_name] = None |
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else: |
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querier = query_module.get_instance() |
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self._queriers[query_module_name] = querier |
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self._query_threads.append(eventlet.spawn(querier.start)) |
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return self._queriers[query_module_name] |
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def get_tracker(): |
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with Connection(transport_utils.get_messaging_urls()) as conn: |
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return ResultsTracker(conn, [ACTIONSTATE_WORK_Q]) |
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StackStorm /
st2
