| /* |
| * 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.control.nc.partitions; |
| |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.Executor; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import edu.uci.ics.hyracks.api.comm.IFrameWriter; |
| import edu.uci.ics.hyracks.api.context.IHyracksRootContext; |
| import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId; |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.api.io.FileHandle; |
| import edu.uci.ics.hyracks.api.io.FileReference; |
| import edu.uci.ics.hyracks.api.io.IIOManager; |
| import edu.uci.ics.hyracks.api.partitions.PartitionId; |
| import edu.uci.ics.hyracks.control.common.job.PartitionState; |
| import edu.uci.ics.hyracks.control.nc.io.IOManager; |
| |
| public class MaterializedPartitionWriter implements IFrameWriter { |
| private static final Logger LOGGER = Logger.getLogger(MaterializedPartitionWriter.class.getName()); |
| |
| protected final IHyracksRootContext ctx; |
| |
| protected final PartitionManager manager; |
| |
| protected final PartitionId pid; |
| |
| protected final TaskAttemptId taId; |
| |
| protected final Executor executor; |
| |
| private FileReference fRef; |
| |
| private FileHandle handle; |
| |
| private long size; |
| |
| private boolean failed; |
| |
| public MaterializedPartitionWriter(IHyracksRootContext ctx, PartitionManager manager, PartitionId pid, |
| TaskAttemptId taId, Executor executor) { |
| this.ctx = ctx; |
| this.manager = manager; |
| this.pid = pid; |
| this.taId = taId; |
| this.executor = executor; |
| } |
| |
| @Override |
| public void open() throws HyracksDataException { |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("open(" + pid + " by " + taId); |
| } |
| fRef = manager.getFileFactory().createUnmanagedWorkspaceFile(pid.toString()); |
| handle = ctx.getIOManager().open(fRef, IIOManager.FileReadWriteMode.READ_WRITE, |
| IIOManager.FileSyncMode.METADATA_ASYNC_DATA_ASYNC); |
| size = 0; |
| failed = false; |
| } |
| |
| @Override |
| public void nextFrame(ByteBuffer buffer) throws HyracksDataException { |
| size += ctx.getIOManager().syncWrite(handle, size, buffer); |
| } |
| |
| @Override |
| public void fail() throws HyracksDataException { |
| failed = true; |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| if (LOGGER.isLoggable(Level.INFO)) { |
| LOGGER.info("close(" + pid + " by " + taId); |
| } |
| ctx.getIOManager().close(handle); |
| if (!failed) { |
| manager.registerPartition(pid, taId, |
| new MaterializedPartition(ctx, fRef, executor, (IOManager) ctx.getIOManager()), |
| PartitionState.COMMITTED); |
| } |
| } |
| } |