| /* |
| * 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.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Optional; |
| import org.apache.flink.api.java.DataSet; |
| import org.apache.flink.api.java.io.TextOutputFormat; |
| import org.apache.wayang.basic.operators.TextFileSink; |
| import org.apache.wayang.core.api.Configuration; |
| import org.apache.wayang.core.function.TransformationDescriptor; |
| import org.apache.wayang.core.optimizer.OptimizationContext; |
| import org.apache.wayang.core.optimizer.costs.LoadProfileEstimator; |
| import org.apache.wayang.core.optimizer.costs.LoadProfileEstimators; |
| import org.apache.wayang.core.plan.wayangplan.ExecutionOperator; |
| 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.util.Tuple; |
| import org.apache.wayang.flink.channels.DataSetChannel; |
| import org.apache.wayang.flink.execution.FlinkExecutor; |
| |
| /** |
| * Implementation of the {@link TextFileSink} operator for the Flink platform. |
| */ |
| public class FlinkTextFileSink<Type> extends TextFileSink<Type> implements FlinkExecutionOperator{ |
| |
| |
| |
| public FlinkTextFileSink(String textFileUrl, TransformationDescriptor<Type, String> formattingDescriptor) { |
| super(textFileUrl, formattingDescriptor); |
| } |
| |
| public FlinkTextFileSink(TextFileSink<Type> that) { |
| super(that); |
| } |
| |
| @Override |
| public Tuple<Collection<ExecutionLineageNode>, Collection<ChannelInstance>> evaluate( |
| ChannelInstance[] inputs, |
| ChannelInstance[] outputs, |
| FlinkExecutor flinkExecutor, |
| OptimizationContext.OperatorContext operatorContext) { |
| assert inputs.length == 1; |
| assert outputs.length == 0; |
| |
| DataSet<Type> inputDataset = ((DataSetChannel.Instance) inputs[0]).provideDataSet(); |
| |
| final TextOutputFormat.TextFormatter<Type> fileOutputFormat = flinkExecutor.getCompiler().compileOutput(this.formattingDescriptor); |
| |
| inputDataset.writeAsFormattedText(this.textFileUrl, fileOutputFormat); |
| |
| return ExecutionOperator.modelEagerExecution(inputs, outputs, operatorContext); |
| } |
| |
| @Override |
| public List<ChannelDescriptor> getSupportedInputChannels(int index) { |
| return Arrays.asList(DataSetChannel.DESCRIPTOR, DataSetChannel.DESCRIPTOR_MANY); |
| } |
| |
| @Override |
| public List<ChannelDescriptor> getSupportedOutputChannels(int index) { |
| throw new UnsupportedOperationException("This operator has no outputs."); |
| } |
| |
| @Override |
| public boolean containsAction() { |
| return true; |
| } |
| |
| |
| |
| @Override |
| public Optional<LoadProfileEstimator> createLoadProfileEstimator(Configuration configuration) { |
| final Optional<LoadProfileEstimator> optEstimator = |
| FlinkExecutionOperator.super.createLoadProfileEstimator(configuration); |
| LoadProfileEstimators.nestUdfEstimator(optEstimator, this.formattingDescriptor, configuration); |
| return optEstimator; |
| } |
| |
| } |