| #!/usr/bin/env python |
| |
| ''' |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you 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 ambari_simplejson as json |
| import logging |
| import os |
| import time |
| from pprint import pformat |
| |
| from ambari_agent.hostname import hostname |
| from ambari_agent.HostInfo import HostInfo |
| from ambari_agent.Hardware import Hardware |
| |
| |
| logger = logging.getLogger(__name__) |
| |
| firstContact = True |
| class Heartbeat: |
| |
| def __init__(self, actionQueue, config=None, alert_collector=None): |
| self.actionQueue = actionQueue |
| self.config = config |
| self.reports = [] |
| self.collector = alert_collector |
| |
| def build(self, id='-1', add_state=False, componentsMapped=False): |
| global clusterId, clusterDefinitionRevision, firstContact |
| timestamp = int(time.time()*1000) |
| queueResult = self.actionQueue.result() |
| recovery_timestamp = self.actionQueue.controller.recovery_manager.recovery_timestamp |
| |
| nodeStatus = { "status" : "HEALTHY", |
| "cause" : "NONE" } |
| |
| heartbeat = { 'responseId' : int(id), |
| 'timestamp' : timestamp, |
| 'hostname' : hostname(self.config), |
| 'nodeStatus' : nodeStatus, |
| 'recoveryTimestamp' : recovery_timestamp |
| } |
| |
| rec_status = self.actionQueue.controller.recovery_manager.get_recovery_status() |
| heartbeat['recoveryReport'] = rec_status |
| |
| commandsInProgress = False |
| if not self.actionQueue.commandQueue.empty(): |
| commandsInProgress = True |
| |
| if len(queueResult) != 0: |
| heartbeat['reports'] = queueResult['reports'] |
| heartbeat['componentStatus'] = queueResult['componentStatus'] |
| if len(heartbeat['reports']) > 0: |
| # There may be IN_PROGRESS tasks |
| commandsInProgress = True |
| pass |
| |
| # For first request/heartbeat assume no components are mapped |
| if int(id) == 0: |
| componentsMapped = False |
| |
| |
| |
| logger.debug("Building Heartbeat: {responseId = %s, timestamp = %s, " |
| "commandsInProgress = %s, componentsMapped = %s," |
| "recoveryTimestamp = %s}", |
| str(id), str(timestamp), repr(commandsInProgress), repr(componentsMapped), str(recovery_timestamp)) |
| |
| |
| logger.debug("Heartbeat: %s", pformat(heartbeat)) |
| |
| hostInfo = HostInfo(self.config) |
| if add_state: |
| logger.info("Adding host info/state to heartbeat message.") |
| nodeInfo = { } |
| # for now, just do the same work as registration |
| # this must be the last step before returning heartbeat |
| hostInfo.register(nodeInfo, componentsMapped, commandsInProgress) |
| heartbeat['agentEnv'] = nodeInfo |
| mounts = Hardware.osdisks(self.config) |
| heartbeat['mounts'] = mounts |
| |
| |
| logger.debug("agentEnv: %s", str(nodeInfo)) |
| logger.debug("mounts: %s", str(mounts)) |
| |
| if self.collector is not None: |
| heartbeat['alerts'] = self.collector.alerts() |
| |
| return heartbeat |
| |
| def main(argv=None): |
| from ambari_agent.ActionQueue import ActionQueue |
| from ambari_agent.AmbariConfig import AmbariConfig |
| from ambari_agent.Controller import Controller |
| |
| cfg = AmbariConfig() |
| config_file_path = AmbariConfig.getConfigFile(home_dir="") |
| if os.path.exists(config_file_path): |
| cfg.read(config_file_path) |
| else: |
| raise Exception("No config found, use default") |
| |
| ctl = Controller(cfg) |
| actionQueue = ActionQueue(cfg, ctl) |
| heartbeat = Heartbeat(actionQueue) |
| print json.dumps(heartbeat.build('3',3)) |
| |
| if __name__ == '__main__': |
| main() |