| /* |
| * 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.profiler.java; |
| |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.util.function.Supplier; |
| import org.apache.wayang.java.operators.JavaTextFileSource; |
| |
| /** |
| * {@link OperatorProfiler} for sources. |
| */ |
| public class JavaTextFileSourceProfiler extends SourceProfiler { |
| |
| private File tempFile; |
| |
| public JavaTextFileSourceProfiler(Supplier<String> dataQuantumGenerator, String fileUrl) { |
| super(() -> new JavaTextFileSource(fileUrl), dataQuantumGenerator); |
| } |
| |
| @Override |
| void setUpSourceData(long cardinality) throws Exception { |
| if (this.tempFile != null) { |
| if (!this.tempFile.delete()) { |
| this.logger.warn("Could not delete {}.", this.tempFile); |
| } |
| } |
| this.tempFile = File.createTempFile("wayang-java", "txt"); |
| this.tempFile.deleteOnExit(); |
| |
| // Create input data. |
| try (BufferedWriter writer = new BufferedWriter(new FileWriter(this.tempFile))) { |
| final Supplier<?> supplier = this.dataQuantumGenerators.get(0); |
| for (int i = 0; i < cardinality; i++) { |
| writer.write(supplier.get().toString()); |
| writer.write('\n'); |
| } |
| } |
| } |
| |
| @Override |
| protected long provideDiskBytes() { |
| return this.tempFile.length(); |
| } |
| |
| |
| } |