applications/southbound-cli/src/main/java/org/opendaylight/openflowplugin/applications/southboundcli/cli/GetAllNodesCommand.java

   1 /*
   2  * Copyright (c) 2017 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.openflowplugin.applications.southboundcli.cli;
   9
  10 import static org.opendaylight.openflowplugin.applications.southboundcli.util.ShellUtil.LINE_SEPARATOR;
  11
  12 import java.util.Formatter;
  13 import org.apache.karaf.shell.api.action.Action;
  14 import org.apache.karaf.shell.api.action.Command;
  15 import org.apache.karaf.shell.api.action.lifecycle.Reference;
  16 import org.apache.karaf.shell.api.action.lifecycle.Service;
  17 import org.apache.karaf.shell.api.console.Session;
  18 import org.opendaylight.openflowplugin.applications.southboundcli.DpnTracker;
  19 import org.opendaylight.openflowplugin.applications.southboundcli.util.OFNode;
  20
  21 @Service
  22 @Command(scope = "openflow", name = "getallnodes", description = "Print all nodes from the operational datastore")
  23 public final class GetAllNodesCommand implements Action {
  24     @Reference
  25     Session session;
  26     @Reference
  27     DpnTracker dpnTracker;
  28
  29     @Override
  30     public Object execute() throws Exception {
  31         if (dpnTracker == null) {
  32             // not initialized
  33             return null;
  34         }
  35
  36         final var ofNodeList = dpnTracker.currentNodes();
  37         if (ofNodeList.isEmpty()) {
  38             session.getConsole().println("No node is connected yet");
  39             return null;
  40         }
  41
  42         final var stringBuilder = new StringBuilder();
  43         try (var formatter = new Formatter(stringBuilder)) {
  44             session.getConsole().println("Number of nodes: " + ofNodeList.size());
  45             session.getConsole().println(getAllLocalNodesHeaderOutput());
  46             session.getConsole().println(LINE_SEPARATOR);
  47             for (OFNode ofNode : ofNodeList) {
  48                 session.getConsole().println(formatter.format("%-15s %3s %-15s %n",
  49                     ofNode.getNodeId(), "", ofNode.getNodeName()).toString());
  50                 stringBuilder.setLength(0);
  51             }
  52         }
  53         return null;
  54     }
  55
  56     private static String getAllLocalNodesHeaderOutput() {
  57         try (var formatter = new Formatter()) {
  58             return formatter.format("%-15s %3s %-15s", "NodeId", "", "NodeName").toString();
  59         }
  60     }
  61 }