applications/southbound-cli/src/main/java/org/opendaylight/openflowplugin/applications/southboundcli/cli/GetAllNodesCommandProvider.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 java.util.Objects.requireNonNull;
  11
  12 import java.util.Formatter;
  13 import org.apache.felix.gogo.commands.Command;
  14 import org.apache.karaf.shell.console.OsgiCommandSupport;
  15 import org.opendaylight.openflowplugin.applications.southboundcli.DpnTracker;
  16 import org.opendaylight.openflowplugin.applications.southboundcli.util.OFNode;
  17
  18 @Command(scope = "openflow", name = "getallnodes", description = "Print all nodes from the operational datastore")
  19 public class GetAllNodesCommandProvider extends OsgiCommandSupport {
  20     private final DpnTracker dpnTracker;
  21
  22     public GetAllNodesCommandProvider(final DpnTracker dpnTracker) {
  23         this.dpnTracker = requireNonNull(dpnTracker);
  24     }
  25
  26     @SuppressWarnings("checkstyle:RegexpSinglelineJava")
  27     @Override
  28     protected Object doExecute() throws Exception {
  29         final var ofNodeList = dpnTracker.currentNodes();
  30         if (ofNodeList.isEmpty()) {
  31             System.out.println("No node is connected yet");
  32             return null;
  33         }
  34
  35         final var stringBuilder = new StringBuilder();
  36         try (var formatter = new Formatter(stringBuilder)) {
  37             System.out.println("Number of nodes: " + ofNodeList.size());
  38             System.out.println(getAllLocalNodesHeaderOutput());
  39             System.out.println("--------------------------------------------------------------------------");
  40             for (OFNode ofNode : ofNodeList) {
  41                 System.out.println(formatter.format("%-15s %3s %-15s %n",
  42                     ofNode.getNodeId(), "", ofNode.getNodeName()).toString());
  43                 stringBuilder.setLength(0);
  44             }
  45         }
  46         return null;
  47     }
  48
  49     private static String getAllLocalNodesHeaderOutput() {
  50         try (var formatter = new Formatter()) {
  51             return formatter.format("%-15s %3s %-15s", "NodeId", "", "NodeName").toString();
  52         }
  53     }
  54 }