southbound/southbound-impl/src/main/java/org/opendaylight/ovsdb/southbound/reconciliation/connection/ConnectionReconciliationTask.java

   1 /*
   2  * Copyright (c) 2016 Brocade Communications Systems, Inc. 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.ovsdb.southbound.reconciliation.connection;
   9
  10 import org.opendaylight.ovsdb.lib.OvsdbClient;
  11 import org.opendaylight.ovsdb.southbound.OvsdbConnectionManager;
  12 import org.opendaylight.ovsdb.southbound.reconciliation.ReconciliationManager;
  13 import org.opendaylight.ovsdb.southbound.reconciliation.ReconciliationTask;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
  15 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  16 import org.opendaylight.yangtools.yang.binding.DataObject;
  17 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 import java.net.UnknownHostException;
  22 import java.util.concurrent.atomic.AtomicInteger;
  23
  24 /**
  25  * Created by Anil Vishnoi (avishnoi@Brocade.com) on 3/9/16.
  26  */
  27 public class ConnectionReconciliationTask extends ReconciliationTask {
  28
  29     private static final Logger LOG = LoggerFactory.getLogger(ConnectionReconciliationTask.class);
  30
  31     private static final int RETRY_INTERVAL_FACTOR = 10000;
  32     private static final int MAX_ATTEMPT = 10;
  33
  34     private AtomicInteger connectionAttempt = new AtomicInteger(0);
  35
  36     public ConnectionReconciliationTask(ReconciliationManager reconciliationManager, OvsdbConnectionManager
  37             connectionManager, InstanceIdentifier<?> nodeIid, DataObject configData) {
  38         super(reconciliationManager, connectionManager, nodeIid, configData);
  39
  40     }
  41
  42     @Override
  43     public boolean reconcileConfiguration(OvsdbConnectionManager connectionManager) {
  44         boolean result = false;
  45         connectionAttempt.incrementAndGet();
  46         InstanceIdentifier<Node> nIid = (InstanceIdentifier<Node>) nodeIid;
  47         OvsdbNodeAugmentation ovsdbNode = (OvsdbNodeAugmentation)configData;
  48
  49         LOG.info("Retry({}) connection to Ovsdb Node {} ", connectionAttempt.get(), ovsdbNode.getConnectionInfo());
  50         OvsdbClient client = null;
  51         try {
  52             client = connectionManager.connect(nIid, ovsdbNode);
  53             if (client != null) {
  54                 LOG.info("Successfully connected to Ovsdb Node {} ", ovsdbNode.getConnectionInfo());
  55                 result = true;
  56             } else {
  57                 LOG.warn("Connection retry({}) failed for {}.",
  58                         connectionAttempt.get(), ovsdbNode.getConnectionInfo());
  59             }
  60         } catch (UnknownHostException e) {
  61             LOG.warn("Connection retry({}) failed with exception. ",connectionAttempt.get(), e);
  62         }
  63         return result;
  64     }
  65
  66     @Override
  67     public void doRetry(boolean wasLastAttemptSuccessful) {
  68
  69         if( !wasLastAttemptSuccessful && connectionAttempt.get() <= MAX_ATTEMPT ) {
  70             reconciliationManager.enqueueForRetry(ConnectionReconciliationTask.this);
  71         } else {
  72             reconciliationManager.dequeue(this);
  73         }
  74     }
  75
  76     @Override
  77     public void checkReadinessAndProcess() {
  78         reconciliationManager.enqueue(this);
  79     }
  80
  81     @Override
  82     public long retryDelayInMills() {
  83         return connectionAttempt.get() * RETRY_INTERVAL_FACTOR;
  84     }
  85 }