mistral/mistral/services/action_execution_reporter.py
Kupai József ce18c0bf67 A mechanism to close stuck running action executions
If an executor dies while running an action execution, then the
execution will remain in RUNNING state (because the dead executor
can't signal the error).

Implements blueprint: action-execution-reporting

Change-Id: I51b4db6aa321d0e53bbb85a74f8ebaea0376d22e
2018-06-12 14:15:15 +00:00

94 lines
2.8 KiB
Python

# Copyright 2018 Nokia Networks.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from oslo_config import cfg
from oslo_log import log as logging
from oslo_service import periodic_task
from oslo_service import threadgroup
from mistral import context as auth_ctx
from mistral.rpc import clients as rpc
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
class ActionExecutionReporter(periodic_task.PeriodicTasks):
"""The reporter that reports the running action executions."""
def __init__(self, conf):
super(ActionExecutionReporter, self).__init__(conf)
self._engine_client = rpc.get_engine_client()
self._running_actions = set()
self.interval = CONF.action_heartbeat.check_interval
self.max_missed = CONF.action_heartbeat.max_missed_heartbeats
self.enabled = self.interval and self.max_missed
_periodic_task = periodic_task.periodic_task(
spacing=self.interval,
run_immediately=True
)
self.add_periodic_task(
_periodic_task(report)
)
def add_action_ex_id(self, action_ex_id):
# With run-action there is no actions_ex_id assigned
if action_ex_id and self.enabled:
self._engine_client.report_running_actions([action_ex_id])
self._running_actions.add(action_ex_id)
def remove_action_ex_id(self, action_ex_id):
if action_ex_id and self.enabled:
self._running_actions.discard(action_ex_id)
def report(reporter, ctx):
LOG.debug("Running heartbeat reporter...")
if not reporter._running_actions:
return
auth_ctx.set_ctx(ctx)
reporter._engine_client.report_running_actions(reporter._running_actions)
def setup(action_execution_reporter):
interval = CONF.action_heartbeat.check_interval
max_missed = CONF.action_heartbeat.max_missed_heartbeats
enabled = interval and max_missed
if not enabled:
LOG.info("Action heartbeat reporting disabled.")
return None
tg = threadgroup.ThreadGroup()
ctx = auth_ctx.MistralContext(
user=None,
tenant=None,
auth_token=None,
is_admin=True
)
tg.add_dynamic_timer(
action_execution_reporter.run_periodic_tasks,
initial_delay=None,
periodic_interval_max=1,
context=ctx
)
return tg