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.ErrorType;
  31 import org.opendaylight.yangtools.yang.common.RpcError;
  32 import org.opendaylight.yangtools.yang.common.RpcResult;
  33 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  34
  35 public final class MultiLayerFlowService<O extends DataObject> extends AbstractSimpleService<FlowModInputBuilder, O> {
  36
  37     private final ConvertorExecutor convertorExecutor;
  38     private final VersionDatapathIdConvertorData data;
  39
  40     public MultiLayerFlowService(final RequestContextStack requestContextStack,
  41                                  final DeviceContext deviceContext,
  42                                  final Class<O> clazz,
  43                                  final ConvertorExecutor convertorExecutor) {
  44         super(requestContextStack, deviceContext, clazz);
  45         this.convertorExecutor = convertorExecutor;
  46         data = new VersionDatapathIdConvertorData(getVersion());
  47         data.setDatapathId(getDatapathId());
  48     }
  49
  50     @Override
  51     protected OfHeader buildRequest(final Xid xid, final FlowModInputBuilder input) {
  52         input.setXid(xid.getValue());
  53         return input.build();
  54     }
  55
  56     public List<FlowModInputBuilder> toFlowModInputs(final Flow input) {
  57         final Optional<List<FlowModInputBuilder>> flowModInputBuilders = convertorExecutor.convert(input, data);
  58         return flowModInputBuilders.orElse(Collections.emptyList());
  59     }
  60
  61     public ListenableFuture<RpcResult<O>> processFlowModInputBuilders(final List<FlowModInputBuilder> ofFlowModInputs) {
  62         final List<ListenableFuture<RpcResult<O>>> partialFutures = new ArrayList<>(ofFlowModInputs.size());
  63
  64         for (final FlowModInputBuilder flowModInputBuilder : ofFlowModInputs) {
  65             partialFutures.add(handleServiceCall(flowModInputBuilder));
  66         }
  67
  68         final ListenableFuture<List<RpcResult<O>>> allFutures = Futures.successfulAsList(partialFutures);
  69         final SettableFuture<RpcResult<O>> finalFuture = SettableFuture.create();
  70         Futures.addCallback(allFutures, new FutureCallback<List<RpcResult<O>>>() {
  71             @Override
  72             public void onSuccess(final List<RpcResult<O>> results) {
  73                 final ArrayList<RpcError> errors = new ArrayList();
  74                 for (RpcResult<O> flowModResult : results) {
  75                     if (flowModResult == null) {
  76                         errors.add(RpcResultBuilder.newError(
  77                                 ErrorType.PROTOCOL, OFConstants.APPLICATION_TAG,
  78                                 "unexpected flowMod result (null) occurred"));
  79                     } else if (!flowModResult.isSuccessful()) {
  80                         errors.addAll(flowModResult.getErrors());
  81                     }
  82                 }
  83
  84                 final RpcResultBuilder<O> rpcResultBuilder;
  85                 if (errors.isEmpty()) {
  86                     rpcResultBuilder = RpcResultBuilder.success();
  87                 } else {
  88                     rpcResultBuilder = RpcResultBuilder.<O>failed().withRpcErrors(errors);
  89                 }
  90
  91                 finalFuture.set(rpcResultBuilder.build());
  92             }
  93
  94             @Override
  95             public void onFailure(final Throwable throwable) {
  96                 RpcResultBuilder<O> rpcResultBuilder = RpcResultBuilder.failed();
  97                 finalFuture.set(rpcResultBuilder.build());
  98             }
  99         }, MoreExecutors.directExecutor());
 100
 101         return finalFuture;
 102     }
 103 }