| // 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.cookbook; |
| |
| 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.PluginConfigFactory; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| import com.codahale.metrics.ConsoleReporter; |
| import com.codahale.metrics.MetricRegistry; |
| |
| import org.eclipse.jgit.lib.Config; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Demonstration of how to add a new Dropwizard Metrics Reporter using |
| * Gerrit's plug-in API. |
| * |
| * @see <a href="https://dropwizard.github.io/metrics/3.1.0/getting-started/#reporting-via-jmx">here</a> |
| * @see <a href="https://dropwizard.github.io/metrics/3.1.0/getting-started/#reporting-via-http">here</a> |
| * @see <a href="https://dropwizard.github.io/metrics/3.1.0/getting-started/#other-reporting">here</a> |
| * |
| * Also shows how to fetch plug-in specific configuration values. |
| * <@see com.google.gerrit.server.config.PluginConfigFactory> |
| * |
| * Enable by adding the file etc/cookbook.config: |
| * |
| * [console-metrics] |
| * enabled = true |
| * |
| */ |
| @Listen |
| @Singleton |
| public class ConsoleMetricReporter implements LifecycleListener { |
| private ConsoleReporter consoleReporter; |
| private boolean enabled; |
| |
| @Inject |
| public ConsoleMetricReporter(MetricRegistry registry, |
| PluginConfigFactory configFactory, |
| @PluginName String pluginName) { |
| Config config = configFactory.getGlobalPluginConfig(pluginName); |
| enabled = config.getBoolean("console-metrics", "enabled", false); |
| if (!enabled) { |
| return; |
| } |
| this.consoleReporter = |
| ConsoleReporter.forRegistry(registry).convertRatesTo(TimeUnit.SECONDS) |
| .convertDurationsTo(TimeUnit.MILLISECONDS).build(); |
| } |
| |
| @Override |
| public void start() { |
| if (enabled) { |
| consoleReporter.start(1, TimeUnit.MINUTES); |
| } |
| } |
| |
| @Override |
| public void stop() { |
| if (enabled) { |
| consoleReporter.stop(); |
| } |
| } |
| } |