2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.openflowplugin.impl.connection.listener;
10 import com.google.common.annotations.VisibleForTesting;
11 import com.google.common.base.Preconditions;
12 import java.net.InetSocketAddress;
13 import java.util.Date;
14 import java.util.Objects;
15 import java.util.concurrent.Future;
16 import java.util.concurrent.ThreadPoolExecutor;
17 import java.util.concurrent.TimeUnit;
18 import javax.annotation.Nonnull;
19 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
20 import org.opendaylight.openflowplugin.api.openflow.device.Xid;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoInputBuilder;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoOutput;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FeaturesReply;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.DisconnectEvent;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SwitchIdleEvent;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SystemNotificationsListener;
27 import org.opendaylight.yangtools.yang.common.RpcError;
28 import org.opendaylight.yangtools.yang.common.RpcResult;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
35 public class SystemNotificationsListenerImpl implements SystemNotificationsListener {
37 private static final Logger LOG = LoggerFactory.getLogger(SystemNotificationsListenerImpl.class);
38 private static final Xid ECHO_XID = new Xid(0L);
40 private final ConnectionContext connectionContext;
42 static final long MAX_ECHO_REPLY_TIMEOUT = 2000;
43 private final long echoReplyTimeout;
44 private final ThreadPoolExecutor threadPool;
46 public SystemNotificationsListenerImpl(@Nonnull final ConnectionContext connectionContext,
47 long echoReplyTimeout,
48 @Nonnull final ThreadPoolExecutor threadPool) {
49 this.threadPool = threadPool;
50 this.connectionContext = Preconditions.checkNotNull(connectionContext);
51 this.echoReplyTimeout = echoReplyTimeout;
55 public void onDisconnectEvent(final DisconnectEvent notification) {
56 LOG.info("ConnectionEvent: Connection closed by device, Device:{}, NodeId:{}",
57 connectionContext.getConnectionAdapter().getRemoteAddress(), connectionContext.getSafeNodeIdForLOG());
58 connectionContext.onConnectionClosed();
62 public void onSwitchIdleEvent(final SwitchIdleEvent notification) {
63 threadPool.execute(this::executeOnSwitchIdleEvent);
66 private void executeOnSwitchIdleEvent() {
67 boolean shouldBeDisconnected = true;
69 final InetSocketAddress remoteAddress = connectionContext.getConnectionAdapter().getRemoteAddress();
71 if (ConnectionContext.CONNECTION_STATE.WORKING.equals(connectionContext.getConnectionState())) {
72 FeaturesReply features = connectionContext.getFeatures();
73 LOG.info("Switch Idle state occurred, node={}|auxId={}", remoteAddress, features.getAuxiliaryId());
74 connectionContext.changeStateToTimeouting();
75 EchoInputBuilder builder = new EchoInputBuilder();
76 builder.setVersion(features.getVersion());
77 builder.setXid(ECHO_XID.getValue());
79 Future<RpcResult<EchoOutput>> echoReplyFuture = connectionContext.getConnectionAdapter().echo(builder.build());
82 RpcResult<EchoOutput> echoReplyValue = echoReplyFuture.get(echoReplyTimeout, TimeUnit.MILLISECONDS);
83 if (echoReplyValue.isSuccessful() &&
84 Objects.equals(echoReplyValue.getResult().getXid(), ECHO_XID.getValue())) {
85 connectionContext.changeStateToWorking();
86 shouldBeDisconnected = false;
88 logErrors(remoteAddress, echoReplyValue);
90 } catch (Exception e) {
91 if (LOG.isWarnEnabled()) {
92 LOG.warn("Exception while waiting for echoReply from [{}] in TIMEOUTING state: {}", remoteAddress, e.getMessage());
95 if (LOG.isTraceEnabled()) {
96 LOG.trace("Exception while waiting for echoReply from [{}] in TIMEOUTING state: {}", remoteAddress, e);
101 if (shouldBeDisconnected) {
102 if (LOG.isInfoEnabled()) {
103 LOG.info("ConnectionEvent:Closing connection as device is idle. Echo sent at {}. Device:{}, NodeId:{}",
104 new Date(System.currentTimeMillis() - echoReplyTimeout), remoteAddress, connectionContext.getSafeNodeIdForLOG());
107 connectionContext.closeConnection(true);
111 private void logErrors(InetSocketAddress remoteAddress, RpcResult<EchoOutput> echoReplyValue) {
112 for (RpcError replyError : echoReplyValue.getErrors()) {
113 Throwable cause = replyError.getCause();
114 if (LOG.isWarnEnabled()) {
115 LOG.warn("Received EchoReply from [{}] in TIMEOUTING state, Error:{}", remoteAddress, cause.getMessage());
118 if (LOG.isTraceEnabled()) {
119 LOG.trace("Received EchoReply from [{}] in TIMEOUTING state, Error:{}", remoteAddress, cause);