| /* |
| * 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.wayang.flink.operators; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import org.apache.flink.api.java.operators.DataSink; |
| import org.apache.flink.core.fs.FileSystem; |
| import org.apache.wayang.basic.channels.FileChannel; |
| import org.apache.wayang.basic.operators.ObjectFileSink; |
| import org.apache.wayang.core.optimizer.OptimizationContext; |
| import org.apache.wayang.core.plan.wayangplan.ExecutionOperator; |
| import org.apache.wayang.core.plan.wayangplan.Operator; |
| import org.apache.wayang.core.platform.ChannelDescriptor; |
| import org.apache.wayang.core.platform.ChannelInstance; |
| import org.apache.wayang.core.platform.lineage.ExecutionLineageNode; |
| import org.apache.wayang.core.types.DataSetType; |
| import org.apache.wayang.core.util.Tuple; |
| import org.apache.wayang.flink.channels.DataSetChannel; |
| import org.apache.wayang.flink.compiler.WayangFileOutputFormat; |
| import org.apache.wayang.flink.execution.FlinkExecutor; |
| import org.apache.wayang.flink.platform.FlinkPlatform; |
| |
| /** |
| * {@link Operator} for the {@link FlinkPlatform} that creates a sequence file. |
| * |
| * @see FlinkObjectFileSink |
| */ |
| public class FlinkObjectFileSink<Type> extends ObjectFileSink<Type> implements FlinkExecutionOperator { |
| |
| public FlinkObjectFileSink(ObjectFileSink<Type> that) { |
| super(that); |
| } |
| |
| public FlinkObjectFileSink(DataSetType<Type> type) { |
| this(null, type); |
| } |
| |
| public FlinkObjectFileSink(String targetPath, DataSetType<Type> type) { |
| super(targetPath, type); |
| } |
| |
| @Override |
| public Tuple<Collection<ExecutionLineageNode>, Collection<ChannelInstance>> evaluate( |
| ChannelInstance[] inputs, |
| ChannelInstance[] outputs, |
| FlinkExecutor flinkExecutor, |
| OptimizationContext.OperatorContext operatorContext |
| ) throws Exception { |
| |
| assert inputs.length == this.getNumInputs(); |
| assert outputs.length <= 1; |
| final FileChannel.Instance output; |
| final String targetPath; |
| if(outputs.length == 1) { |
| output = (FileChannel.Instance) outputs[0]; |
| targetPath = output.addGivenOrTempPath(this.textFileUrl, flinkExecutor.getConfiguration()); |
| }else{ |
| targetPath = this.textFileUrl; |
| } |
| |
| //TODO: remove the set parallelism 1 |
| DataSetChannel.Instance input = (DataSetChannel.Instance) inputs[0]; |
| final DataSink<Type> tDataSink = input.<Type>provideDataSet() |
| .write(new WayangFileOutputFormat<Type>(targetPath), targetPath, FileSystem.WriteMode.OVERWRITE) |
| .setParallelism(1); |
| |
| |
| return ExecutionOperator.modelEagerExecution(inputs, outputs, operatorContext); |
| } |
| |
| @Override |
| protected ExecutionOperator createCopy() { |
| return new FlinkObjectFileSink<>(this.textFileUrl, this.getType()); |
| } |
| |
| @Override |
| public String getLoadProfileEstimatorConfigurationKey() { |
| return "wayang.flink.objectfilesink.load"; |
| } |
| |
| @Override |
| public List<ChannelDescriptor> getSupportedInputChannels(int index) { |
| return Collections.singletonList(DataSetChannel.DESCRIPTOR); |
| } |
| |
| @Override |
| public List<ChannelDescriptor> getSupportedOutputChannels(int index) { |
| return Collections.singletonList(FileChannel.HDFS_OBJECT_FILE_DESCRIPTOR); |
| } |
| |
| @Override |
| public boolean containsAction() { |
| return true; |
| } |
| } |