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.EchoReplyInputBuilder;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoRequestMessage;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ExperimenterMessage;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowRemovedMessage;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloMessage;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReplyMessage;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OpenflowProtocolListener;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortStatusMessage;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  *
  29  */
  30 public class OpenflowProtocolListenerInitialImpl implements OpenflowProtocolListener {
  31
  32     private static final Logger LOG = LoggerFactory.getLogger(OpenflowProtocolListenerInitialImpl.class);
  33
  34     private final ConnectionContext connectionContext;
  35     private final HandshakeContext handshakeContext;
  36
  37     /**
  38      * @param connectionContext
  39      * @param handshakeContext
  40      */
  41     public OpenflowProtocolListenerInitialImpl(final ConnectionContext connectionContext,
  42                                                final HandshakeContext handshakeContext) {
  43         this.connectionContext = connectionContext;
  44         this.handshakeContext = handshakeContext;
  45     }
  46
  47     @Override
  48     public void onEchoRequestMessage(final EchoRequestMessage echoRequestMessage) {
  49         LOG.debug("echo request received: {}", echoRequestMessage.getXid());
  50         EchoReplyInputBuilder builder = new EchoReplyInputBuilder();
  51         builder.setVersion(echoRequestMessage.getVersion());
  52         builder.setXid(echoRequestMessage.getXid());
  53         builder.setData(echoRequestMessage.getData());
  54
  55         connectionContext.getConnectionAdapter().echoReply(builder.build());
  56     }
  57
  58     @Override
  59     public void onErrorMessage(final ErrorMessage notification) {
  60         LOG.warn("NOOP: Error message received during handshake phase: {}", notification);
  61     }
  62
  63     @Override
  64     public void onExperimenterMessage(final ExperimenterMessage notification) {
  65         LOG.info("NOOP: Experimenter message during handshake phase not supported: {}", notification);
  66     }
  67
  68     @Override
  69     public void onFlowRemovedMessage(final FlowRemovedMessage notification) {
  70         LOG.info("NOOP: Flow-removed message during handshake phase not supported: {}", notification);
  71     }
  72
  73     @Override
  74     public void onHelloMessage(final HelloMessage hello) {
  75         LOG.debug("processing HELLO.xid: {}", hello.getXid());
  76         if (connectionContext.getConnectionState() == null) {
  77             connectionContext.changeStateToHandshaking();
  78         }
  79
  80         if (checkState(ConnectionContext.CONNECTION_STATE.HANDSHAKING)) {
  81             final HandshakeStepWrapper handshakeStepWrapper = new HandshakeStepWrapper(
  82                     hello, handshakeContext.getHandshakeManager(), connectionContext.getConnectionAdapter());
  83             //handshakeContext.getHandshakePool().submit(handshakeStepWrapper);
  84             // use up netty thread
  85             handshakeStepWrapper.run();
  86         } else {
  87             //TODO: consider disconnecting of bad behaving device
  88             LOG.warn("Hello message received outside handshake phase: ", hello);
  89         }
  90
  91     }
  92
  93     @Override
  94     public void onMultipartReplyMessage(final MultipartReplyMessage notification) {
  95         LOG.info("NOOP: Multipart-reply message during handshake phase not supported: {}", notification);
  96     }
  97
  98     @Override
  99     public void onPacketInMessage(final PacketInMessage notification) {
 100         LOG.info("NOOP: Packet-in message during handshake phase not supported: {}", notification);
 101     }
 102
 103     @Override
 104     public void onPortStatusMessage(final PortStatusMessage notification) {
 105         LOG.info("NOOP: Port-status message during handshake phase not supported: {}", notification);
 106     }
 107
 108     /**
 109      * @param expectedState
 110      */
 111     protected boolean checkState(final ConnectionContext.CONNECTION_STATE expectedState) {
 112         boolean verdict = true;
 113         if (! Objects.equal(connectionContext.getConnectionState(), expectedState)) {
 114             verdict = false;
 115             LOG.info("Expected state: {}, actual state: {}", expectedState,
 116                     connectionContext.getConnectionState());
 117         }
 118
 119         return verdict;
 120     }
 121 }