| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // 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. |
| package com.googlesource.gerrit.plugins.metricsreporters; |
| |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.extensions.annotations.Listen; |
| import com.google.gerrit.extensions.annotations.PluginName; |
| import com.google.gerrit.extensions.events.LifecycleListener; |
| import com.google.gerrit.server.config.CanonicalWebUrl; |
| import com.google.gerrit.server.config.PluginConfigFactory; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| import com.codahale.metrics.MetricRegistry; |
| |
| import org.eclipse.jgit.lib.Config; |
| import org.elasticsearch.metrics.ElasticsearchReporter; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.net.UnknownHostException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.Map; |
| import java.util.HashMap; |
| |
| @Listen |
| @Singleton |
| public class GerritElasticsearchReporter implements LifecycleListener { |
| private final ElasticsearchReporter reporter; |
| |
| @Inject |
| public GerritElasticsearchReporter( |
| PluginConfigFactory configFactory, |
| @PluginName String pluginName, |
| @Nullable @CanonicalWebUrl String gerritUrl, |
| MetricRegistry registry) { |
| Config config = configFactory.getGlobalPluginConfig(pluginName); |
| String[] hosts = config.getStringList("elasticsearch", null, "host"); |
| if (hosts.length == 0) { |
| hosts = new String[] { "localhost:9200" }; |
| } |
| |
| Map<String, Object> additionalFields = new HashMap<>(1); |
| try { |
| String hostName; |
| if (gerritUrl != null) { |
| URL u = new URL(gerritUrl); |
| hostName = u.getHost() != null ? u.getHost() : getLocalHostName(); |
| } else { |
| hostName = "Gerrit"; |
| } |
| // Tools like Grafana has a gotcha related to how it treats |
| // Hostnames, especially FQDN’s, and IP addresses (due to |
| // their dots). When included in values for metric keys they will be |
| // interpreted by Graphite as separate pieces. |
| // To combat this we replace all dots in hostnames and IP addresses |
| // with underscores. |
| additionalFields.put("host", hostName.replace('.', '_')); |
| } catch (MalformedURLException | UnknownHostException e) { |
| throw new RuntimeException(e); |
| } |
| |
| try { |
| reporter = ElasticsearchReporter.forRegistry(registry) |
| .hosts(hosts) |
| .additionalFields(additionalFields) |
| .build(); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private String getLocalHostName() throws UnknownHostException { |
| return InetAddress.getLocalHost().getCanonicalHostName(); |
| } |
| |
| @Override |
| public void start() { |
| reporter.start(60, TimeUnit.SECONDS); |
| } |
| |
| @Override |
| public void stop() { |
| reporter.stop(); |
| } |
| } |