| package org.apache.helix.healthcheck; |
| |
| /* |
| * 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 java.util.LinkedList; |
| import java.util.Map; |
| |
| import org.apache.helix.HelixDataAccessor; |
| import org.apache.helix.HelixManager; |
| import org.apache.helix.ZNRecord; |
| import org.apache.helix.PropertyKey.Builder; |
| import org.apache.helix.model.HealthStat; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class ParticipantHealthReportCollectorImpl implements ParticipantHealthReportCollector { |
| private final LinkedList<HealthReportProvider> _healthReportProviderList = |
| new LinkedList<HealthReportProvider>(); |
| private static final Logger LOG = LoggerFactory |
| .getLogger(ParticipantHealthReportCollectorImpl.class); |
| private final HelixManager _helixManager; |
| String _instanceName; |
| |
| public ParticipantHealthReportCollectorImpl(HelixManager helixManager, String instanceName) { |
| _helixManager = helixManager; |
| _instanceName = instanceName; |
| } |
| |
| @Override |
| public void addHealthReportProvider(HealthReportProvider provider) { |
| try { |
| synchronized (_healthReportProviderList) { |
| if (!_healthReportProviderList.contains(provider)) { |
| _healthReportProviderList.add(provider); |
| } else { |
| LOG.warn("Skipping a duplicated HealthCheckInfoProvider"); |
| } |
| } |
| } catch (Exception e) { |
| LOG.error(e.toString()); |
| } |
| } |
| |
| @Override |
| public void removeHealthReportProvider(HealthReportProvider provider) { |
| synchronized (_healthReportProviderList) { |
| if (_healthReportProviderList.contains(provider)) { |
| _healthReportProviderList.remove(provider); |
| } else { |
| LOG.warn("Skip removing a non-exist HealthCheckInfoProvider"); |
| } |
| } |
| } |
| |
| @Override |
| public void reportHealthReportMessage(ZNRecord healthCheckInfoUpdate) { |
| HelixDataAccessor accessor = _helixManager.getHelixDataAccessor(); |
| Builder keyBuilder = accessor.keyBuilder(); |
| if(!accessor.setProperty(keyBuilder.healthReport(_instanceName, healthCheckInfoUpdate.getId()), |
| new HealthStat(healthCheckInfoUpdate))) { |
| LOG.error("Failed to persist health report to zk!"); |
| } |
| } |
| |
| @Override |
| public synchronized void transmitHealthReports() { |
| synchronized (_healthReportProviderList) { |
| for (HealthReportProvider provider : _healthReportProviderList) { |
| try { |
| Map<String, String> report = provider.getRecentHealthReport(); |
| Map<String, Map<String, String>> partitionReport = |
| provider.getRecentPartitionHealthReport(); |
| ZNRecord record = new ZNRecord(provider.getReportName()); |
| if (report != null) { |
| record.setSimpleFields(report); |
| } |
| if (partitionReport != null) { |
| record.setMapFields(partitionReport); |
| } |
| record.setSimpleField(HealthStat.TIMESTAMP_NAME, "" + System.currentTimeMillis()); |
| |
| HelixDataAccessor accessor = _helixManager.getHelixDataAccessor(); |
| Builder keyBuilder = accessor.keyBuilder(); |
| if (!accessor.setProperty(keyBuilder.healthReport(_instanceName, record.getId()), |
| new HealthStat(record))) { |
| LOG.error("Failed to persist health report to zk!"); |
| } |
| |
| provider.resetStats(); |
| } catch (Exception e) { |
| LOG.error("fail to transmit health report", e); |
| } |
| } |
| } |
| } |
| } |