| /* |
| * 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.hudi.metrics; |
| |
| import org.apache.hudi.common.util.StringUtils; |
| import org.apache.hudi.common.util.ValidationUtils; |
| import org.apache.hudi.exception.HoodieException; |
| |
| import com.codahale.metrics.MetricRegistry; |
| import com.codahale.metrics.jmx.JmxReporter; |
| |
| import javax.management.MBeanServer; |
| import javax.management.remote.JMXConnectorServer; |
| import javax.management.remote.JMXConnectorServerFactory; |
| import javax.management.remote.JMXServiceURL; |
| |
| import java.io.IOException; |
| import java.rmi.NoSuchObjectException; |
| import java.rmi.registry.LocateRegistry; |
| import java.rmi.registry.Registry; |
| import java.rmi.server.UnicastRemoteObject; |
| import java.util.Objects; |
| |
| |
| /** |
| * A reporter which publishes metric values to a JMX server. |
| */ |
| public class JmxReporterServer { |
| |
| /** |
| * Returns a new {@link JmxReporterServer.Builder} for {@link JmxReporterServer}. |
| * |
| * @param registry the registry to report |
| * @return a {@link JmxReporterServer.Builder} instance for a {@link JmxReporterServer} |
| */ |
| public static JmxReporterServer.Builder forRegistry(MetricRegistry registry) { |
| return new JmxReporterServer.Builder(registry); |
| } |
| |
| /** |
| * A builder for {@link JmxReporterServer} instances. |
| */ |
| public static class Builder { |
| |
| private final MetricRegistry registry; |
| private MBeanServer mBeanServer; |
| private String host; |
| private int port; |
| |
| private Builder(MetricRegistry registry) { |
| this.registry = registry; |
| } |
| |
| public JmxReporterServer.Builder host(String host) { |
| this.host = host; |
| return this; |
| } |
| |
| public JmxReporterServer.Builder port(int port) { |
| this.port = port; |
| return this; |
| } |
| |
| public JmxReporterServer.Builder registerWith(MBeanServer mBeanServer) { |
| this.mBeanServer = mBeanServer; |
| return this; |
| } |
| |
| public JmxReporterServer build() { |
| Objects.requireNonNull(registry, "registry cannot be null!"); |
| Objects.requireNonNull(mBeanServer, "mBeanServer cannot be null!"); |
| ValidationUtils.checkArgument(!StringUtils.isNullOrEmpty(host), "host cannot be null or empty!"); |
| return new JmxReporterServer(registry, host, port, mBeanServer); |
| } |
| } |
| |
| private JMXConnectorServer connector; |
| private Registry rmiRegistry; |
| private JmxReporter reporter; |
| |
| protected JmxReporterServer(MetricRegistry registry, String host, int port, |
| MBeanServer mBeanServer) { |
| String serviceUrl = |
| "service:jmx:rmi://localhost:" + port + "/jndi/rmi://" + host + ":" + port + "/jmxrmi"; |
| try { |
| JMXServiceURL url = new JMXServiceURL(serviceUrl); |
| connector = JMXConnectorServerFactory |
| .newJMXConnectorServer(url, null, mBeanServer); |
| rmiRegistry = LocateRegistry.createRegistry(port); |
| reporter = JmxReporter.forRegistry(registry).registerWith(mBeanServer).build(); |
| } catch (Exception e) { |
| throw new HoodieException("Jmx service url created " + serviceUrl, e); |
| } |
| } |
| |
| public JmxReporter getReporter() { |
| return reporter; |
| } |
| |
| public void start() { |
| ValidationUtils.checkArgument(reporter != null && connector != null, |
| "reporter or connector cannot be null!"); |
| try { |
| connector.start(); |
| reporter.start(); |
| } catch (Exception e) { |
| throw new HoodieException("connector or reporter start failed", e); |
| } |
| } |
| |
| public void stop() throws IOException { |
| stopConnector(); |
| stopReport(); |
| stopRmiRegistry(); |
| } |
| |
| private void stopRmiRegistry() { |
| if (rmiRegistry != null) { |
| try { |
| UnicastRemoteObject.unexportObject(rmiRegistry, true); |
| } catch (NoSuchObjectException e) { |
| throw new HoodieException("Could not un-export our RMI registry", e); |
| } finally { |
| rmiRegistry = null; |
| } |
| } |
| } |
| |
| private void stopConnector() throws IOException { |
| if (connector != null) { |
| try { |
| connector.stop(); |
| } finally { |
| connector = null; |
| } |
| } |
| } |
| |
| private void stopReport() { |
| if (reporter != null) { |
| try { |
| reporter.stop(); |
| } finally { |
| reporter = null; |
| } |
| } |
| } |
| } |