| /** |
| * 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.client.cli; |
| |
| import java.io.PrintWriter; |
| import java.util.List; |
| |
| import org.apache.commons.cli.CommandLine; |
| import org.apache.commons.cli.GnuParser; |
| import org.apache.commons.cli.HelpFormatter; |
| import org.apache.commons.cli.Options; |
| import org.apache.hadoop.util.ToolRunner; |
| import org.apache.hadoop.yarn.api.records.NodeId; |
| import org.apache.hadoop.yarn.api.records.NodeReport; |
| import org.apache.hadoop.yarn.exceptions.YarnRemoteException; |
| import org.apache.hadoop.yarn.util.ConverterUtils; |
| |
| public class NodeCLI extends YarnCLI { |
| private static final String NODES_PATTERN = "%16s\t%17s\t%26s\t%18s\n"; |
| public static void main(String[] args) throws Exception { |
| NodeCLI cli = new NodeCLI(); |
| cli.setSysOutPrintStream(System.out); |
| cli.setSysErrPrintStream(System.err); |
| int res = ToolRunner.run(cli, args); |
| cli.stop(); |
| System.exit(res); |
| } |
| |
| @Override |
| public int run(String[] args) throws Exception { |
| |
| Options opts = new Options(); |
| opts.addOption(STATUS_CMD, true, "Prints the status report of the node."); |
| opts.addOption(LIST_CMD, false, "Lists all the nodes."); |
| CommandLine cliParser = new GnuParser().parse(opts, args); |
| |
| int exitCode = -1; |
| if (cliParser.hasOption("status")) { |
| if (args.length != 2) { |
| printUsage(opts); |
| return exitCode; |
| } |
| printNodeStatus(cliParser.getOptionValue("status")); |
| } else if (cliParser.hasOption("list")) { |
| listClusterNodes(); |
| } else { |
| syserr.println("Invalid Command Usage : "); |
| printUsage(opts); |
| } |
| return 0; |
| } |
| |
| /** |
| * It prints the usage of the command |
| * |
| * @param opts |
| */ |
| private void printUsage(Options opts) { |
| new HelpFormatter().printHelp("node", opts); |
| } |
| |
| /** |
| * Lists all the nodes present in the cluster |
| * |
| * @throws YarnRemoteException |
| */ |
| private void listClusterNodes() throws YarnRemoteException { |
| PrintWriter writer = new PrintWriter(sysout); |
| List<NodeReport> nodesReport = client.getNodeReports(); |
| writer.println("Total Nodes:" + nodesReport.size()); |
| writer.printf(NODES_PATTERN, "Node-Id", "Node-Http-Address", |
| "Health-Status(isNodeHealthy)", "Running-Containers"); |
| for (NodeReport nodeReport : nodesReport) { |
| writer.printf(NODES_PATTERN, nodeReport.getNodeId(), |
| nodeReport.getHttpAddress(), nodeReport |
| .getNodeHealthStatus().getIsNodeHealthy(), nodeReport |
| .getNumContainers()); |
| } |
| writer.flush(); |
| } |
| |
| /** |
| * Prints the node report for node id. |
| * |
| * @param nodeIdStr |
| * @throws YarnRemoteException |
| */ |
| private void printNodeStatus(String nodeIdStr) throws YarnRemoteException { |
| NodeId nodeId = ConverterUtils.toNodeId(nodeIdStr); |
| List<NodeReport> nodesReport = client.getNodeReports(); |
| StringBuffer nodeReportStr = new StringBuffer(); |
| NodeReport nodeReport = null; |
| for (NodeReport report : nodesReport) { |
| if (!report.getNodeId().equals(nodeId)) { |
| continue; |
| } |
| nodeReport = report; |
| nodeReportStr.append("Node Report : "); |
| nodeReportStr.append("\n\tNode-Id : "); |
| nodeReportStr.append(nodeReport.getNodeId()); |
| nodeReportStr.append("\n\tRack : "); |
| nodeReportStr.append(nodeReport.getRackName()); |
| nodeReportStr.append("\n\tNode-Http-Address : "); |
| nodeReportStr.append(nodeReport.getHttpAddress()); |
| nodeReportStr.append("\n\tHealth-Status(isNodeHealthy) : "); |
| nodeReportStr.append(nodeReport.getNodeHealthStatus() |
| .getIsNodeHealthy()); |
| nodeReportStr.append("\n\tLast-Last-Health-Update : "); |
| nodeReportStr.append(nodeReport.getNodeHealthStatus() |
| .getLastHealthReportTime()); |
| nodeReportStr.append("\n\tHealth-Report : "); |
| nodeReportStr |
| .append(nodeReport.getNodeHealthStatus().getHealthReport()); |
| nodeReportStr.append("\n\tContainers : "); |
| nodeReportStr.append(nodeReport.getNumContainers()); |
| nodeReportStr.append("\n\tMemory-Used : "); |
| nodeReportStr.append((nodeReport.getUsed() == null) ? "0M" |
| : (nodeReport.getUsed().getMemory() + "M")); |
| nodeReportStr.append("\n\tMemory-Capacity : "); |
| nodeReportStr.append(nodeReport.getCapability().getMemory()); |
| } |
| |
| if (nodeReport == null) { |
| nodeReportStr.append("Could not find the node report for node id : " |
| + nodeIdStr); |
| } |
| |
| sysout.println(nodeReportStr.toString()); |
| } |
| } |