| /* |
| * 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.util.function.Supplier; |
| import org.apache.commons.lang3.Validate; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.wayang.java.channels.JavaChannelInstance; |
| import org.apache.wayang.java.operators.JavaExecutionOperator; |
| |
| /** |
| * {@link OperatorProfiler} implementation for sinks. |
| */ |
| public abstract class SourceProfiler extends OperatorProfiler { |
| |
| private JavaChannelInstance outputChannelInstance; |
| |
| public SourceProfiler(Supplier<JavaExecutionOperator> operatorGenerator, Supplier<?>... dataQuantumGenerators) { |
| super(operatorGenerator, dataQuantumGenerators); |
| } |
| |
| @Override |
| public void prepare(long... inputCardinalities) { |
| Validate.isTrue(inputCardinalities.length == 1); |
| |
| try { |
| this.setUpSourceData(inputCardinalities[0]); |
| } catch (Exception e) { |
| LogManager.getLogger(this.getClass()).error( |
| String.format("Failed to set up source data for input cardinality %d.", inputCardinalities[0]), |
| e |
| ); |
| } |
| |
| super.prepare(inputCardinalities); |
| |
| this.outputChannelInstance = createChannelInstance(); |
| } |
| |
| abstract void setUpSourceData(long cardinality) throws Exception; |
| |
| @Override |
| protected long executeOperator() { |
| this.evaluate( |
| new JavaChannelInstance[]{}, |
| new JavaChannelInstance[]{this.outputChannelInstance} |
| ); |
| return this.outputChannelInstance.provideStream().count(); |
| } |
| |
| } |