| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.hyracks.dataflow.std.base; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.hyracks.api.comm.IFrameWriter; |
| import org.apache.hyracks.api.comm.VSizeFrame; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.dataflow.ActivityId; |
| import org.apache.hyracks.api.dataflow.IActivityGraphBuilder; |
| import org.apache.hyracks.api.dataflow.IOperatorNodePushable; |
| import org.apache.hyracks.api.dataflow.TaskId; |
| import org.apache.hyracks.api.dataflow.value.IRecordDescriptorProvider; |
| import org.apache.hyracks.api.dataflow.value.RecordDescriptor; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.api.job.IOperatorDescriptorRegistry; |
| import org.apache.hyracks.dataflow.common.comm.util.FrameUtils; |
| import org.apache.hyracks.dataflow.std.misc.MaterializerTaskState; |
| |
| /** |
| * Abstract class for two replication related operator descriptor - replicate and split |
| * Replicate operator propagates all frames to all output branches. |
| * That is, each tuple will be propagated to all output branches. |
| * Split operator propagates each tuple in a frame to one output branch only. |
| */ |
| public abstract class AbstractReplicateOperatorDescriptor extends AbstractOperatorDescriptor { |
| protected static final long serialVersionUID = 1L; |
| |
| protected final static int SPLITTER_MATERIALIZER_ACTIVITY_ID = 0; |
| protected final static int MATERIALIZE_READER_ACTIVITY_ID = 1; |
| |
| protected final boolean[] outputMaterializationFlags; |
| protected final boolean requiresMaterialization; |
| protected final int numberOfNonMaterializedOutputs; |
| protected final int numberOfMaterializedOutputs; |
| |
| public AbstractReplicateOperatorDescriptor(IOperatorDescriptorRegistry spec, RecordDescriptor rDesc, |
| int outputArity) { |
| this(spec, rDesc, outputArity, new boolean[outputArity]); |
| } |
| |
| public AbstractReplicateOperatorDescriptor(IOperatorDescriptorRegistry spec, RecordDescriptor rDesc, |
| int outputArity, boolean[] outputMaterializationFlags) { |
| super(spec, 1, outputArity); |
| for (int i = 0; i < outputArity; i++) { |
| recordDescriptors[i] = rDesc; |
| } |
| this.outputMaterializationFlags = outputMaterializationFlags; |
| |
| boolean reqMaterialization = false; |
| int matOutputs = 0; |
| int nonMatOutputs = 0; |
| for (boolean flag : outputMaterializationFlags) { |
| if (flag) { |
| reqMaterialization = true; |
| matOutputs++; |
| } else { |
| nonMatOutputs++; |
| } |
| } |
| |
| this.requiresMaterialization = reqMaterialization; |
| this.numberOfMaterializedOutputs = matOutputs; |
| this.numberOfNonMaterializedOutputs = nonMatOutputs; |
| |
| } |
| |
| @Override |
| public void contributeActivities(IActivityGraphBuilder builder) { |
| ReplicatorMaterializerActivityNode sma = new ReplicatorMaterializerActivityNode( |
| new ActivityId(odId, SPLITTER_MATERIALIZER_ACTIVITY_ID)); |
| builder.addActivity(this, sma); |
| builder.addSourceEdge(0, sma, 0); |
| int pipelineOutputIndex = 0; |
| int activityId = MATERIALIZE_READER_ACTIVITY_ID; |
| for (int i = 0; i < outputArity; i++) { |
| if (outputMaterializationFlags[i]) { |
| MaterializeReaderActivityNode mra = new MaterializeReaderActivityNode( |
| new ActivityId(odId, activityId++)); |
| builder.addActivity(this, mra); |
| builder.addBlockingEdge(sma, mra); |
| builder.addTargetEdge(i, mra, 0); |
| } else { |
| builder.addTargetEdge(i, sma, pipelineOutputIndex++); |
| } |
| } |
| } |
| |
| protected class ReplicatorMaterializerActivityNode extends AbstractActivityNode { |
| private static final long serialVersionUID = 1L; |
| |
| public ReplicatorMaterializerActivityNode(ActivityId id) { |
| super(id); |
| } |
| |
| @Override |
| public IOperatorNodePushable createPushRuntime(final IHyracksTaskContext ctx, |
| IRecordDescriptorProvider recordDescProvider, final int partition, int nPartitions) |
| throws HyracksDataException { |
| return new AbstractUnaryInputOperatorNodePushable() { |
| private MaterializerTaskState state; |
| private final IFrameWriter[] writers = new IFrameWriter[numberOfNonMaterializedOutputs]; |
| private final boolean[] isOpen = new boolean[numberOfNonMaterializedOutputs]; |
| |
| @Override |
| public void open() throws HyracksDataException { |
| if (requiresMaterialization) { |
| state = new MaterializerTaskState(ctx.getJobletContext().getJobId(), |
| new TaskId(getActivityId(), partition), numberOfMaterializedOutputs); |
| state.open(ctx); |
| } |
| for (int i = 0; i < numberOfNonMaterializedOutputs; i++) { |
| isOpen[i] = true; |
| writers[i].open(); |
| } |
| } |
| |
| @Override |
| public void nextFrame(ByteBuffer bufferAccessor) throws HyracksDataException { |
| if (requiresMaterialization) { |
| state.appendFrame(bufferAccessor); |
| bufferAccessor.clear(); |
| } |
| for (int i = 0; i < numberOfNonMaterializedOutputs; i++) { |
| FrameUtils.flushFrame(bufferAccessor, writers[i]); |
| } |
| } |
| |
| @Override |
| public void flush() throws HyracksDataException { |
| for (int i = 0; i < numberOfNonMaterializedOutputs; i++) { |
| writers[i].flush(); |
| } |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| HyracksDataException hde = null; |
| try { |
| if (requiresMaterialization) { |
| state.close(); |
| ctx.setStateObject(state); |
| } |
| } finally { |
| for (int i = 0; i < numberOfNonMaterializedOutputs; i++) { |
| if (isOpen[i]) { |
| try { |
| writers[i].close(); |
| } catch (Throwable th) { |
| if (hde == null) { |
| hde = new HyracksDataException(th); |
| } else { |
| hde.addSuppressed(th); |
| } |
| } |
| } |
| } |
| } |
| if (hde != null) { |
| throw hde; |
| } |
| } |
| |
| @Override |
| public void fail() throws HyracksDataException { |
| HyracksDataException hde = null; |
| for (int i = 0; i < numberOfNonMaterializedOutputs; i++) { |
| if (isOpen[i]) { |
| try { |
| writers[i].fail(); |
| } catch (Throwable th) { |
| if (hde == null) { |
| hde = new HyracksDataException(th); |
| } else { |
| hde.addSuppressed(th); |
| } |
| } |
| } |
| } |
| if (hde != null) { |
| throw hde; |
| } |
| } |
| |
| @Override |
| public void setOutputFrameWriter(int index, IFrameWriter writer, RecordDescriptor recordDesc) { |
| writers[index] = writer; |
| } |
| }; |
| } |
| } |
| |
| protected class MaterializeReaderActivityNode extends AbstractActivityNode { |
| private static final long serialVersionUID = 1L; |
| |
| public MaterializeReaderActivityNode(ActivityId id) { |
| super(id); |
| } |
| |
| @Override |
| public IOperatorNodePushable createPushRuntime(final IHyracksTaskContext ctx, |
| final IRecordDescriptorProvider recordDescProvider, final int partition, int nPartitions) |
| throws HyracksDataException { |
| return new AbstractUnaryOutputSourceOperatorNodePushable() { |
| |
| @Override |
| public void initialize() throws HyracksDataException { |
| MaterializerTaskState state = (MaterializerTaskState) ctx.getStateObject( |
| new TaskId(new ActivityId(getOperatorId(), SPLITTER_MATERIALIZER_ACTIVITY_ID), partition)); |
| state.writeOut(writer, new VSizeFrame(ctx)); |
| } |
| |
| }; |
| } |
| } |
| } |