| // 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. |
| package com.cloud.ha; |
| |
| import java.util.Date; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| import javax.inject.Inject; |
| import javax.naming.ConfigurationException; |
| |
| import org.apache.cloudstack.framework.config.dao.ConfigurationDao; |
| import org.apache.cloudstack.managed.context.ManagedContextRunnable; |
| |
| import com.cloud.alert.AlertManager; |
| import com.cloud.usage.dao.UsageJobDao; |
| import com.cloud.utils.db.TransactionLegacy; |
| |
| public class HighAvailabilityManagerExtImpl extends HighAvailabilityManagerImpl { |
| |
| @Inject |
| UsageJobDao _usageJobDao; |
| |
| @Inject |
| ConfigurationDao configDao; |
| |
| @Override |
| public boolean configure(final String name, final Map<String, Object> xmlParams) throws ConfigurationException { |
| super.configure(name, xmlParams); |
| return true; |
| } |
| |
| @Override |
| public boolean start() { |
| super.start(); |
| |
| boolean enableUsage = new Boolean(configDao.getValue("enable.usage.server")); |
| |
| //By default, usage is enabled for production |
| //Devs might override this value to disable usage in their setup |
| if (enableUsage) { |
| _executor.scheduleAtFixedRate(new UsageServerMonitorTask(), 60 * 60, 10 * 60, TimeUnit.SECONDS); // schedule starting in one hour to execute every 10 minutes |
| } |
| |
| return true; |
| } |
| |
| protected class UsageServerMonitorTask extends ManagedContextRunnable { |
| @Override |
| protected void runInContext() { |
| if (logger.isInfoEnabled()) { |
| logger.info("checking health of usage server"); |
| } |
| |
| try { |
| boolean isRunning = false; |
| TransactionLegacy txn = TransactionLegacy.open(TransactionLegacy.USAGE_DB); |
| try { |
| Date lastHeartbeat = _usageJobDao.getLastHeartbeat(); |
| if (lastHeartbeat != null) { |
| long sinceLastHeartbeat = System.currentTimeMillis() - lastHeartbeat.getTime(); |
| if (sinceLastHeartbeat <= (10 * 60 * 1000)) { |
| // if it's been less than 10 minutes since the last heartbeat, then it appears to be running, otherwise send an alert |
| isRunning = true; |
| } |
| } |
| if (logger.isDebugEnabled()) { |
| logger.debug("usage server running? " + isRunning + ", heartbeat: " + lastHeartbeat); |
| } |
| } finally { |
| txn.close(); |
| |
| // switch back to VMOPS db |
| TransactionLegacy swap = TransactionLegacy.open(TransactionLegacy.CLOUD_DB); |
| swap.close(); |
| } |
| |
| if (!isRunning) { |
| _alertMgr.sendAlert(AlertManager.AlertType.ALERT_TYPE_USAGE_SERVER, 0, new Long(0), "No usage server process running", |
| "No usage server process has been detected, some attention is required"); |
| } else { |
| _alertMgr.clearAlert(AlertManager.AlertType.ALERT_TYPE_USAGE_SERVER, 0, 0); |
| } |
| } catch (Exception ex) { |
| logger.warn("Error while monitoring usage job", ex); |
| } |
| } |
| } |
| } |