-# Copyright (C) 2021 Wind River Systems, Inc.\r
-#\r
-# Licensed under the Apache License, Version 2.0 (the "License");\r
-# you may not use this file except in compliance with the License.\r
-# You may obtain a copy of the License at\r
-#\r
-# http://www.apache.org/licenses/LICENSE-2.0\r
-#\r
-# Unless required by applicable law or agreed to in writing, software\r
-# distributed under the License is distributed on an "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
-# See the License for the specific language governing permissions and\r
-# limitations under the License.\r
-\r
-import time\r
-import sched\r
-# from o2common.service.unit_of_work import AbstractUnitOfWork\r
-from o2common.service.watcher.base import WatcherTree\r
-\r
-from o2common.helper import o2logging\r
-logger = o2logging.get_logger(__name__)\r
-\r
-\r
-class PollWorker(object):\r
- def __init__(self, interval=10, bus=None) -> None:\r
- super().__init__()\r
- self.watchers = []\r
- self.schedinstance = sched.scheduler(time.time, time.sleep)\r
- self.schedinterval = interval\r
- self._stopped = True\r
- self._bus = bus\r
-\r
- def set_interval(self, interval):\r
- if interval > 0:\r
- self.schedinterval = interval\r
- else:\r
- raise Exception("Invalid interval:" + interval)\r
-\r
- def add_watcher(self, watcher: WatcherTree):\r
- self.watchers.append(watcher)\r
-\r
- def _repeat(self):\r
- logger.debug("_repeat started")\r
- if self._stopped:\r
- return\r
- for w in self.watchers:\r
- try:\r
- # logger.debug("about to probe:"+w)\r
- w.probe(None)\r
- except Exception as ex:\r
- logger.warning("Worker raises exception:" + str(ex))\r
- continue\r
-\r
- # handle events\r
- if self._bus is not None:\r
- events = self._bus.uow.collect_new_events()\r
- for event in events:\r
- self._bus.handle(event)\r
-\r
- self.schedinstance.enter(self.schedinterval, 1, self._repeat)\r
-\r
- # note the sched run will block current thread\r
- def start(self):\r
- self._stopped = False\r
- logger.debug('about to start sched task')\r
- self.schedinstance.enter(self.schedinterval, 1, self._repeat)\r
- self.schedinstance.run()\r
-\r
- def stop(self):\r
- self._stopped = True\r
+# Copyright (C) 2021 Wind River Systems, Inc.
+#
+# 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.
+
+import time
+import sched
+# from o2common.service.unit_of_work import AbstractUnitOfWork
+from o2common.service.watcher.base import WatcherTree
+
+from o2common.helper import o2logging
+logger = o2logging.get_logger(__name__)
+
+
+class PollWorker(object):
+ def __init__(self, interval=10, bus=None) -> None:
+ super().__init__()
+ self.watchers = []
+ self.schedinstance = sched.scheduler(time.time, time.sleep)
+ self.schedinterval = interval
+ self._stopped = True
+ self._bus = bus
+
+ def set_interval(self, interval):
+ if interval > 0:
+ self.schedinterval = interval
+ else:
+ raise Exception("Invalid interval:" + interval)
+
+ def add_watcher(self, watcher: WatcherTree):
+ self.watchers.append(watcher)
+
+ def _repeat(self):
+ logger.debug("_repeat started")
+ if self._stopped:
+ return
+ for w in self.watchers:
+ try:
+ # logger.debug("about to probe:"+w)
+ w.probe(None)
+ except Exception as ex:
+ logger.warning("Worker raises exception %s: %s - %s "
+ % (w, type(ex), str(ex)))
+ continue
+
+ # handle events
+ if self._bus is not None:
+ events = self._bus.uow.collect_new_events()
+ for event in events:
+ self._bus.handle(event)
+
+ self.schedinstance.enter(self.schedinterval, 1, self._repeat)
+
+ # note the sched run will block current thread
+ def start(self):
+ self._stopped = False
+ logger.debug('about to start sched task')
+ self.schedinstance.enter(self.schedinterval, 1, self._repeat)
+ self.schedinstance.run()
+
+ def stop(self):
+ self._stopped = True