| /** |
| * 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.hadoop.yarn.service; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeysPublic; |
| import org.apache.hadoop.ipc.Server; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.service.AbstractService; |
| import org.apache.hadoop.util.ExitUtil; |
| import org.apache.hadoop.yarn.api.ApplicationConstants; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.ipc.YarnRPC; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.ComponentCountProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.FlexComponentsRequestProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.FlexComponentsResponseProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.GetStatusRequestProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.GetStatusResponseProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.RestartServiceRequestProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.RestartServiceResponseProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.StopRequestProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.StopResponseProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.UpgradeServiceRequestProto; |
| import org.apache.hadoop.yarn.proto.ClientAMProtocol.UpgradeServiceResponseProto; |
| import org.apache.hadoop.yarn.service.component.ComponentEvent; |
| import org.apache.hadoop.yarn.service.utils.ServiceApiUtil; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import static org.apache.hadoop.yarn.service.component.ComponentEventType.FLEX; |
| |
| public class ClientAMService extends AbstractService |
| implements ClientAMProtocol { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(ClientAMService.class); |
| |
| private ServiceContext context; |
| private Server server; |
| |
| private InetSocketAddress bindAddress; |
| |
| public ClientAMService(ServiceContext context) { |
| super("Client AM Service"); |
| this.context = context; |
| } |
| |
| @Override protected void serviceStart() throws Exception { |
| Configuration conf = getConfig(); |
| YarnRPC rpc = YarnRPC.create(conf); |
| InetSocketAddress address = new InetSocketAddress(0); |
| server = rpc.getServer(ClientAMProtocol.class, this, address, conf, |
| context.secretManager, 1); |
| |
| // Enable service authorization? |
| if (conf.getBoolean( |
| CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHORIZATION, |
| false)) { |
| this.server.refreshServiceAcl(getConfig(), new ClientAMPolicyProvider()); |
| } |
| |
| server.start(); |
| |
| String nodeHostString = |
| System.getenv(ApplicationConstants.Environment.NM_HOST.name()); |
| |
| bindAddress = NetUtils.createSocketAddrForHost(nodeHostString, |
| server.getListenerAddress().getPort()); |
| |
| LOG.info("Instantiated ClientAMService at " + bindAddress); |
| super.serviceStart(); |
| } |
| |
| @Override protected void serviceStop() throws Exception { |
| if (server != null) { |
| server.stop(); |
| } |
| super.serviceStop(); |
| } |
| |
| @Override public FlexComponentsResponseProto flexComponents( |
| FlexComponentsRequestProto request) throws IOException { |
| if (!request.getComponentsList().isEmpty()) { |
| for (ComponentCountProto component : request.getComponentsList()) { |
| ComponentEvent event = new ComponentEvent(component.getName(), FLEX) |
| .setDesired(component.getNumberOfContainers()); |
| context.scheduler.getDispatcher().getEventHandler().handle(event); |
| LOG.info("Flexing component {} to {}", component.getName(), |
| component.getNumberOfContainers()); |
| } |
| } |
| return FlexComponentsResponseProto.newBuilder().build(); |
| } |
| |
| @Override |
| public GetStatusResponseProto getStatus(GetStatusRequestProto request) |
| throws IOException, YarnException { |
| String stat = ServiceApiUtil.jsonSerDeser.toJson(context.service); |
| return GetStatusResponseProto.newBuilder().setStatus(stat).build(); |
| } |
| |
| @Override |
| public StopResponseProto stop(StopRequestProto requestProto) |
| throws IOException, YarnException { |
| LOG.info("Stop the service by {}", UserGroupInformation.getCurrentUser()); |
| context.scheduler.getDiagnostics() |
| .append("Stopped by user " + UserGroupInformation.getCurrentUser()); |
| context.scheduler.setGracefulStop(); |
| |
| // Stop the service in 2 seconds delay to make sure this rpc call is completed. |
| // shutdown hook will be executed which will stop AM gracefully. |
| Thread thread = new Thread() { |
| @Override |
| public void run() { |
| try { |
| Thread.sleep(2000); |
| ExitUtil.terminate(0); |
| } catch (InterruptedException e) { |
| LOG.error("Interrupted while stopping", e); |
| } |
| } |
| }; |
| thread.start(); |
| return StopResponseProto.newBuilder().build(); |
| } |
| |
| public InetSocketAddress getBindAddress() { |
| return bindAddress; |
| } |
| |
| @Override |
| public UpgradeServiceResponseProto upgrade( |
| UpgradeServiceRequestProto request) throws IOException { |
| ServiceEvent event = new ServiceEvent(ServiceEventType.UPGRADE); |
| event.setVersion(request.getVersion()); |
| context.scheduler.getDispatcher().getEventHandler().handle(event); |
| LOG.info("Upgrading service to version {} by {}", request.getVersion(), |
| UserGroupInformation.getCurrentUser()); |
| return UpgradeServiceResponseProto.newBuilder().build(); |
| } |
| |
| @Override |
| public RestartServiceResponseProto restart(RestartServiceRequestProto request) |
| throws IOException, YarnException { |
| ServiceEvent event = new ServiceEvent(ServiceEventType.START); |
| context.scheduler.getDispatcher().getEventHandler().handle(event); |
| LOG.info("Restart service by {}", UserGroupInformation.getCurrentUser()); |
| return RestartServiceResponseProto.newBuilder().build(); |
| } |
| } |