Merge "Merge empty parent Nodes by DeviceManager initialization"
[openflowplugin.git] / openflowplugin-impl / src / main / java / org / opendaylight / openflowplugin / impl / statistics / StatisticsManagerImpl.java
1 /*
2  * Copyright (c) 2015 Cisco 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
9 package org.opendaylight.openflowplugin.impl.statistics;
10
11 import com.google.common.util.concurrent.FutureCallback;
12 import com.google.common.util.concurrent.Futures;
13 import com.google.common.util.concurrent.ListenableFuture;
14 import io.netty.util.HashedWheelTimer;
15 import io.netty.util.Timeout;
16 import io.netty.util.TimerTask;
17 import java.util.concurrent.ConcurrentHashMap;
18 import java.util.concurrent.TimeUnit;
19 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
20 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceInitializationPhaseHandler;
21 import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsContext;
22 import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsManager;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
25
26 /**
27  * Created by Martin Bobak <mbobak@cisco.com> on 1.4.2015.
28  */
29 public class StatisticsManagerImpl implements StatisticsManager {
30
31     private static final Logger LOG = LoggerFactory.getLogger(StatisticsManagerImpl.class);
32
33     private DeviceInitializationPhaseHandler deviceInitPhaseHandler;
34
35     private HashedWheelTimer hashedWheelTimer;
36
37     private ConcurrentHashMap<DeviceContext, StatisticsContext> contexts = new ConcurrentHashMap();
38
39     @Override
40     public void setDeviceInitializationPhaseHandler(final DeviceInitializationPhaseHandler handler) {
41         deviceInitPhaseHandler = handler;
42     }
43
44     @Override
45     public void onDeviceContextLevelUp(final DeviceContext deviceContext) {
46
47         if (null == hashedWheelTimer) {
48             LOG.trace("This is first device that delivered timer. Starting statistics polling immediately.");
49             hashedWheelTimer = deviceContext.getTimer();
50             pollStatistics();
51         }
52
53         final StatisticsContext statisticsContext = new StatisticsContextImpl(deviceContext);
54         final ListenableFuture<Void> weHaveDynamicData = statisticsContext.gatherDynamicData();
55         Futures.addCallback(weHaveDynamicData, new FutureCallback<Void>() {
56             @Override
57             public void onSuccess(final Void aVoid) {
58                 // wake up RPC registration
59                 LOG.trace("Device dynamic info collected. Going to announce raise to next level.");
60                 contexts.put(deviceContext, statisticsContext);
61                 deviceInitPhaseHandler.onDeviceContextLevelUp(deviceContext);
62             }
63
64             @Override
65             public void onFailure(final Throwable throwable) {
66                 LOG.warn("Statistics manager was not able to collect dynamic info for device {}", deviceContext.getDeviceState().getNodeId(), throwable);
67             }
68         });
69     }
70
71     private void pollStatistics() {
72         for (final StatisticsContext statisticsContext : contexts.values()) {
73             ListenableFuture deviceStatisticsCollectionFuture = statisticsContext.gatherDynamicData();
74             Futures.addCallback(deviceStatisticsCollectionFuture, new FutureCallback() {
75                 @Override
76                 public void onSuccess(final Object o) {
77                     //nothing to do here
78                 }
79
80                 @Override
81                 public void onFailure(final Throwable throwable) {
82                     LOG.info("Statistics gathering for single node was not successful.");
83                 }
84             });
85         }
86         if (null != hashedWheelTimer) {
87             hashedWheelTimer.newTimeout(new TimerTask() {
88                 @Override
89                 public void run(final Timeout timeout) throws Exception {
90                     pollStatistics();
91                 }
92             }, 3000, TimeUnit.MILLISECONDS);
93         }
94     }
95 }