| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * 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 edu.uci.ics.hyracks.dataflow.std.connectors; |
| |
| import java.nio.ByteBuffer; |
| |
| import edu.uci.ics.hyracks.api.comm.IConnectionDemultiplexer; |
| import edu.uci.ics.hyracks.api.comm.IFrameReader; |
| import edu.uci.ics.hyracks.api.comm.IFrameWriter; |
| import edu.uci.ics.hyracks.api.context.IHyracksStageletContext; |
| import edu.uci.ics.hyracks.api.dataflow.IEndpointDataWriterFactory; |
| import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor; |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.api.job.JobSpecification; |
| import edu.uci.ics.hyracks.dataflow.common.comm.NonDeterministicFrameReader; |
| import edu.uci.ics.hyracks.dataflow.std.base.AbstractConnectorDescriptor; |
| |
| public class MToNReplicatingConnectorDescriptor extends AbstractConnectorDescriptor { |
| public MToNReplicatingConnectorDescriptor(JobSpecification spec) { |
| super(spec); |
| } |
| |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public IFrameWriter createSendSideWriter(IHyracksStageletContext ctx, RecordDescriptor recordDesc, |
| IEndpointDataWriterFactory edwFactory, int index, int nProducerPartitions, int nConsumerPartitions) |
| throws HyracksDataException { |
| final IFrameWriter[] epWriters = new IFrameWriter[nConsumerPartitions]; |
| for (int i = 0; i < nConsumerPartitions; ++i) { |
| epWriters[i] = edwFactory.createFrameWriter(i); |
| } |
| return new IFrameWriter() { |
| @Override |
| public void nextFrame(ByteBuffer buffer) throws HyracksDataException { |
| buffer.mark(); |
| for (int i = 0; i < epWriters.length; ++i) { |
| if (i != 0) { |
| buffer.reset(); |
| } |
| epWriters[i].nextFrame(buffer); |
| } |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| for (int i = 0; i < epWriters.length; ++i) { |
| epWriters[i].close(); |
| } |
| } |
| |
| @Override |
| public void open() throws HyracksDataException { |
| for (int i = 0; i < epWriters.length; ++i) { |
| epWriters[i].open(); |
| } |
| } |
| |
| @Override |
| public void flush() throws HyracksDataException { |
| for (int i = 0; i < epWriters.length; ++i) { |
| epWriters[i].flush(); |
| } |
| } |
| }; |
| } |
| |
| @Override |
| public IFrameReader createReceiveSideReader(IHyracksStageletContext ctx, RecordDescriptor recordDesc, |
| IConnectionDemultiplexer demux, int index, int nProducerPartitions, int nConsumerPartitions) |
| throws HyracksDataException { |
| return new NonDeterministicFrameReader(ctx, demux); |
| } |
| } |