| /** |
| * 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 org.apache.ambari.server.agent; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ThreadFactory; |
| |
| import org.apache.ambari.server.AmbariException; |
| import org.apache.ambari.server.configuration.Configuration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.util.concurrent.ThreadFactoryBuilder; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import com.google.inject.persist.UnitOfWork; |
| |
| @Singleton |
| public class AgentReportsProcessor { |
| private static final Logger LOG = LoggerFactory.getLogger(AgentReportsProcessor.class); |
| |
| private final int poolSize; |
| |
| private final List<ExecutorService> executors; |
| |
| public void addAgentReport(AgentReport agentReport) { |
| int hash = agentReport.getHostName().hashCode(); |
| hash = hash == Integer.MIN_VALUE ? 0 : hash; |
| int executorNumber = Math.abs(hash) % poolSize; |
| executors.get(executorNumber).execute(new AgentReportProcessingTask(agentReport)); |
| } |
| |
| @Inject |
| private HeartBeatHandler hh; |
| |
| @Inject |
| private UnitOfWork unitOfWork; |
| |
| @Inject |
| public AgentReportsProcessor(Configuration configuration) { |
| |
| ThreadFactory threadFactory = new ThreadFactoryBuilder().setNameFormat("agent-report-processor-%d").build(); |
| poolSize = configuration.getAgentsReportThreadPoolSize(); |
| executors = new ArrayList<>(); |
| for (int i = 0; i < poolSize; i++) { |
| executors.add(Executors.newSingleThreadExecutor(threadFactory)); |
| } |
| } |
| |
| private class AgentReportProcessingTask implements Runnable { |
| |
| private final AgentReport agentReport; |
| |
| public AgentReportProcessingTask(AgentReport agentReport) { |
| this.agentReport = agentReport; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| unitOfWork.begin(); |
| String hostName = agentReport.getHostName(); |
| try { |
| |
| //TODO rewrite with polymorphism usage. |
| if (agentReport.getCommandReports() != null) { |
| hh.handleCommandReportStatus(agentReport.getCommandReports(), hostName); |
| } else if (agentReport.getComponentStatuses() != null) { |
| hh.handleComponentReportStatus(agentReport.getComponentStatuses(), hostName); |
| } else if (agentReport.getHostStatusReport() != null) { |
| hh.handleHostReportStatus(agentReport.getHostStatusReport(), hostName); |
| } |
| } catch (AmbariException e) { |
| LOG.error("Error processing agent reports", e); |
| } |
| } finally { |
| unitOfWork.end(); |
| } |
| } |
| } |
| } |