openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/services/SalEchoServiceImpl.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.services;
   9
  10 import com.google.common.util.concurrent.FutureCallback;
  11 import com.google.common.util.concurrent.Futures;
  12 import com.google.common.util.concurrent.JdkFutureAdapters;
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import com.google.common.util.concurrent.SettableFuture;
  15 import java.util.concurrent.Future;
  16 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  17 import org.opendaylight.openflowplugin.api.openflow.device.RequestContext;
  18 import org.opendaylight.openflowplugin.api.openflow.device.RequestContextStack;
  19 import org.opendaylight.openflowplugin.api.openflow.device.Xid;
  20 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.MessageSpy;
  21 import org.opendaylight.openflowplugin.impl.callback.SuccessCallback;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.echo.service.rev150305.SalEchoService;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.echo.service.rev150305.SendEchoInput;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.echo.service.rev150305.SendEchoOutput;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.echo.service.rev150305.SendEchoOutputBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoInput;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoInputBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoOutput;
  29 import org.opendaylight.yangtools.yang.common.RpcError.ErrorType;
  30 import org.opendaylight.yangtools.yang.common.RpcResult;
  31 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 public class SalEchoServiceImpl extends CommonService implements SalEchoService {
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(SalEchoServiceImpl.class);
  38
  39     public SalEchoServiceImpl(final RequestContextStack requestContextStack, final DeviceContext deviceContext) {
  40         super(requestContextStack, deviceContext);
  41     }
  42
  43     @Override
  44     public Future<RpcResult<SendEchoOutput>> sendEcho(final SendEchoInput sendEchoInput) {
  45         final RequestContext<SendEchoOutput> requestContext = requestContextStack.createRequestContext();
  46         final SettableFuture<RpcResult<SendEchoOutput>> sendEchoOutput = requestContextStack
  47                 .storeOrFail(requestContext);
  48         if (!sendEchoOutput.isDone()) {
  49             final Xid xid = deviceContext.getNextXid();
  50             requestContext.setXid(xid);
  51
  52             LOG.trace("Hooking xid {} to device context - precaution.", requestContext.getXid().getValue());
  53             deviceContext.hookRequestCtx(requestContext.getXid(), requestContext);
  54
  55             final EchoInputBuilder echoInputOFJavaBuilder = new EchoInputBuilder();
  56             echoInputOFJavaBuilder.setVersion(version);
  57             echoInputOFJavaBuilder.setXid(xid.getValue());
  58             echoInputOFJavaBuilder.setData(sendEchoInput.getData());
  59             final EchoInput echoInputOFJava = echoInputOFJavaBuilder.build();
  60
  61             final Future<RpcResult<EchoOutput>> rpcEchoOutputOFJava = provideConnectionAdapter(PRIMARY_CONNECTION)
  62                     .echo(echoInputOFJava);
  63             LOG.debug("Echo with xid {} was sent from controller", xid);
  64
  65             ListenableFuture<RpcResult<EchoOutput>> listenableRpcEchoOutputOFJava = JdkFutureAdapters
  66                     .listenInPoolThread(rpcEchoOutputOFJava);
  67
  68             // callback on OF JAVA future
  69             SuccessCallback<EchoOutput, SendEchoOutput> successCallback = new SuccessCallback<EchoOutput, SendEchoOutput>(
  70                     deviceContext, requestContext, listenableRpcEchoOutputOFJava) {
  71
  72                 @Override
  73                 public RpcResult<SendEchoOutput> transform(RpcResult<EchoOutput> rpcResult) {
  74                     EchoOutput echoOutputOFJava = rpcResult.getResult();
  75                     SendEchoOutputBuilder sendEchoOutputBuilder = new SendEchoOutputBuilder();
  76                     sendEchoOutputBuilder.setData(echoOutputOFJava.getData());
  77
  78                     LOG.debug("Echo with xid {} was received by controller.", rpcResult.getResult().getXid());
  79                     return RpcResultBuilder.success(sendEchoOutputBuilder.build()).build();
  80                 }
  81             };
  82             Futures.addCallback(listenableRpcEchoOutputOFJava, successCallback);
  83         } else {
  84             messageSpy.spyMessage(requestContext, MessageSpy.STATISTIC_GROUP.TO_SWITCH_SUBMITTED_FAILURE);
  85         }
  86
  87         // callback on request context future
  88         Futures.addCallback(sendEchoOutput, new FutureCallback<RpcResult<SendEchoOutput>>() {
  89
  90             @Override
  91             public void onSuccess(RpcResult<SendEchoOutput> result) {
  92             }
  93
  94             @Override
  95             public void onFailure(Throwable t) {
  96                 if (sendEchoOutput.isCancelled()) {
  97                     requestContext.getFuture().set(
  98                             RpcResultBuilder.<SendEchoOutput>failed()
  99                                     .withError(ErrorType.APPLICATION, "Echo response wasn't obtained until barrier.")
 100                                     .build());
 101                     LOG.debug("Echo reply with xid {} wasn't received by controller until barrier.",
 102                             requestContext.getXid());
 103                 }
 104             }
 105         });
 106
 107         return sendEchoOutput;
 108     }
 109
 110 }