openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/services/multilayer/MultiLayerFlowService.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.multilayer;
   9
  10 import com.google.common.util.concurrent.FutureCallback;
  11 import com.google.common.util.concurrent.Futures;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import com.google.common.util.concurrent.MoreExecutors;
  14 import com.google.common.util.concurrent.SettableFuture;
  15 import java.util.ArrayList;
  16 import java.util.Collections;
  17 import java.util.List;
  18 import java.util.Optional;
  19 import org.opendaylight.openflowplugin.api.OFConstants;
  20 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  21 import org.opendaylight.openflowplugin.api.openflow.device.RequestContextStack;
  22 import org.opendaylight.openflowplugin.api.openflow.device.Xid;
  23 import org.opendaylight.openflowplugin.impl.services.AbstractSimpleService;
  24 import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.ConvertorExecutor;
  25 import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.data.VersionDatapathIdConvertorData;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.Flow;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowModInputBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  29 import org.opendaylight.yangtools.yang.binding.DataObject;
  30 import org.opendaylight.yangtools.yang.common.RpcError;
  31 import org.opendaylight.yangtools.yang.common.RpcResult;
  32 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  33
  34 public final class MultiLayerFlowService<O extends DataObject> extends AbstractSimpleService<FlowModInputBuilder, O> {
  35
  36     private final ConvertorExecutor convertorExecutor;
  37     private final VersionDatapathIdConvertorData data;
  38
  39     public MultiLayerFlowService(final RequestContextStack requestContextStack,
  40                                  final DeviceContext deviceContext,
  41                                  final Class<O> clazz,
  42                                  final ConvertorExecutor convertorExecutor) {
  43         super(requestContextStack, deviceContext, clazz);
  44         this.convertorExecutor = convertorExecutor;
  45         data = new VersionDatapathIdConvertorData(getVersion());
  46         data.setDatapathId(getDatapathId());
  47     }
  48
  49     @Override
  50     protected OfHeader buildRequest(final Xid xid, final FlowModInputBuilder input) {
  51         input.setXid(xid.getValue());
  52         return input.build();
  53     }
  54
  55     public List<FlowModInputBuilder> toFlowModInputs(final Flow input) {
  56         final Optional<List<FlowModInputBuilder>> flowModInputBuilders = convertorExecutor.convert(input, data);
  57         return flowModInputBuilders.orElse(Collections.emptyList());
  58     }
  59
  60     public ListenableFuture<RpcResult<O>> processFlowModInputBuilders(final List<FlowModInputBuilder> ofFlowModInputs) {
  61         final List<ListenableFuture<RpcResult<O>>> partialFutures = new ArrayList<>(ofFlowModInputs.size());
  62
  63         for (final FlowModInputBuilder flowModInputBuilder : ofFlowModInputs) {
  64             partialFutures.add(handleServiceCall(flowModInputBuilder));
  65         }
  66
  67         final ListenableFuture<List<RpcResult<O>>> allFutures = Futures.successfulAsList(partialFutures);
  68         final SettableFuture<RpcResult<O>> finalFuture = SettableFuture.create();
  69         Futures.addCallback(allFutures, new FutureCallback<List<RpcResult<O>>>() {
  70             @Override
  71             public void onSuccess(final List<RpcResult<O>> results) {
  72                 final ArrayList<RpcError> errors = new ArrayList();
  73                 for (RpcResult<O> flowModResult : results) {
  74                     if (flowModResult == null) {
  75                         errors.add(RpcResultBuilder.newError(
  76                                 RpcError.ErrorType.PROTOCOL, OFConstants.APPLICATION_TAG,
  77                                 "unexpected flowMod result (null) occurred"));
  78                     } else if (!flowModResult.isSuccessful()) {
  79                         errors.addAll(flowModResult.getErrors());
  80                     }
  81                 }
  82
  83                 final RpcResultBuilder<O> rpcResultBuilder;
  84                 if (errors.isEmpty()) {
  85                     rpcResultBuilder = RpcResultBuilder.success();
  86                 } else {
  87                     rpcResultBuilder = RpcResultBuilder.<O>failed().withRpcErrors(errors);
  88                 }
  89
  90                 finalFuture.set(rpcResultBuilder.build());
  91             }
  92
  93             @Override
  94             public void onFailure(final Throwable throwable) {
  95                 RpcResultBuilder<O> rpcResultBuilder = RpcResultBuilder.failed();
  96                 finalFuture.set(rpcResultBuilder.build());
  97             }
  98         }, MoreExecutors.directExecutor());
  99
 100         return finalFuture;
 101     }
 102 }