openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/connection/listener/OpenflowProtocolListenerInitialImpl.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 package org.opendaylight.openflowplugin.impl.connection.listener;
   9
  10 import com.google.common.base.Objects;
  11 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
  12 import org.opendaylight.openflowplugin.api.openflow.connection.HandshakeContext;
  13 import org.opendaylight.openflowplugin.openflow.md.core.HandshakeStepWrapper;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.*;
  15 import org.slf4j.Logger;
  16 import org.slf4j.LoggerFactory;
  17
  18 /**
  19  *
  20  */
  21 public class OpenflowProtocolListenerInitialImpl implements OpenflowProtocolListener {
  22
  23     private static final Logger LOG = LoggerFactory.getLogger(OpenflowProtocolListenerInitialImpl.class);
  24
  25     private final ConnectionContext connectionContext;
  26     private final HandshakeContext handshakeContext;
  27
  28     /**
  29      * @param connectionContext
  30      * @param handshakeContext
  31      */
  32     public OpenflowProtocolListenerInitialImpl(final ConnectionContext connectionContext,
  33                                                final HandshakeContext handshakeContext) {
  34         this.connectionContext = connectionContext;
  35         this.handshakeContext = handshakeContext;
  36     }
  37
  38     @Override
  39     public void onEchoRequestMessage(final EchoRequestMessage echoRequestMessage) {
  40         LOG.debug("echo request received: {}", echoRequestMessage.getXid());
  41         EchoReplyInputBuilder builder = new EchoReplyInputBuilder();
  42         builder.setVersion(echoRequestMessage.getVersion());
  43         builder.setXid(echoRequestMessage.getXid());
  44         builder.setData(echoRequestMessage.getData());
  45
  46         connectionContext.getConnectionAdapter().echoReply(builder.build());
  47     }
  48
  49     @Override
  50     public void onErrorMessage(final ErrorMessage notification) {
  51         // TODO: log
  52     }
  53
  54     @Override
  55     public void onExperimenterMessage(final ExperimenterMessage notification) {
  56         // NOOP
  57
  58     }
  59
  60     @Override
  61     public void onFlowRemovedMessage(final FlowRemovedMessage notification) {
  62         // NOOP
  63     }
  64
  65     @Override
  66     public void onHelloMessage(final HelloMessage hello) {
  67         LOG.debug("processing HELLO.xid: {}", hello.getXid());
  68         if (connectionContext.getConnectionState() == null) {
  69             connectionContext.setConnectionState(ConnectionContext.CONNECTION_STATE.HANDSHAKING);
  70         }
  71
  72         if (checkState(ConnectionContext.CONNECTION_STATE.HANDSHAKING)) {
  73             final HandshakeStepWrapper handshakeStepWrapper = new HandshakeStepWrapper(
  74                     hello, handshakeContext.getHandshakeManager(), connectionContext.getConnectionAdapter());
  75             handshakeContext.getHandshakePool().submit(handshakeStepWrapper);
  76         } else {
  77             //TODO: consider disconnecting of bad behaving device
  78         }
  79
  80     }
  81
  82     @Override
  83     public void onMultipartReplyMessage(final MultipartReplyMessage notification) {
  84         // NOOP
  85     }
  86
  87     @Override
  88     public void onPacketInMessage(final PacketInMessage notification) {
  89         // NOOP
  90     }
  91
  92     @Override
  93     public void onPortStatusMessage(final PortStatusMessage notification) {
  94         // NOOP
  95     }
  96
  97     /**
  98      * @param expectedState
  99      */
 100     protected boolean checkState(final ConnectionContext.CONNECTION_STATE expectedState) {
 101         boolean verdict = true;
 102         if (! Objects.equal(connectionContext.getConnectionState(), expectedState)) {
 103             verdict = false;
 104             LOG.info("Expected state: {}, actual state: {}", expectedState,
 105                     connectionContext.getConnectionState());
 106         }
 107
 108         return verdict;
 109     }
 110 }