| /* |
| * 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.streampipes.pe.examples.jvm.outputstrategy; |
| |
| import org.apache.streampipes.commons.exceptions.SpRuntimeException; |
| import org.apache.streampipes.extensions.api.pe.IStreamPipesDataProcessor; |
| import org.apache.streampipes.extensions.api.pe.config.IDataProcessorConfiguration; |
| import org.apache.streampipes.extensions.api.pe.context.EventProcessorRuntimeContext; |
| import org.apache.streampipes.extensions.api.pe.param.IDataProcessorParameters; |
| import org.apache.streampipes.extensions.api.pe.routing.SpOutputCollector; |
| import org.apache.streampipes.extensions.api.runtime.ResolvesContainerProvidedOutputStrategy; |
| import org.apache.streampipes.model.graph.DataProcessorInvocation; |
| import org.apache.streampipes.model.runtime.Event; |
| import org.apache.streampipes.model.schema.EventSchema; |
| import org.apache.streampipes.model.schema.PropertyScope; |
| import org.apache.streampipes.sdk.builder.ProcessingElementBuilder; |
| import org.apache.streampipes.sdk.builder.StreamRequirementsBuilder; |
| import org.apache.streampipes.sdk.builder.processor.DataProcessorConfiguration; |
| import org.apache.streampipes.sdk.extractor.ProcessingElementParameterExtractor; |
| import org.apache.streampipes.sdk.helpers.EpProperties; |
| import org.apache.streampipes.sdk.helpers.EpRequirements; |
| import org.apache.streampipes.sdk.helpers.Labels; |
| import org.apache.streampipes.sdk.helpers.OutputStrategies; |
| import org.apache.streampipes.sdk.helpers.SupportedFormats; |
| import org.apache.streampipes.sdk.helpers.SupportedProtocols; |
| import org.apache.streampipes.vocabulary.SO; |
| |
| import java.util.List; |
| |
| public class CustomTransformOutputController implements |
| IStreamPipesDataProcessor, ResolvesContainerProvidedOutputStrategy<DataProcessorInvocation, ProcessingElementParameterExtractor> { |
| |
| |
| @Override |
| public IDataProcessorConfiguration declareConfig() { |
| return DataProcessorConfiguration.create( |
| CustomTransformOutputController::new, |
| ProcessingElementBuilder.create("org.apache.streampipes.examples.outputstrategy" + |
| ".customtransform", "Custom transform output example example", "") |
| .requiredStream(StreamRequirementsBuilder. |
| create() |
| .requiredPropertyWithUnaryMapping(EpRequirements.stringReq(), Labels.from |
| ("str", "The date property as a string", ""), PropertyScope.NONE) |
| .build()) |
| .supportedProtocols(SupportedProtocols.kafka()) |
| .supportedFormats(SupportedFormats.jsonFormat()) |
| |
| .outputStrategy(OutputStrategies.customTransformation()) |
| .build() |
| ); |
| } |
| |
| @Override |
| public EventSchema resolveOutputStrategy(DataProcessorInvocation processingElement, |
| ProcessingElementParameterExtractor parameterExtractor) throws SpRuntimeException { |
| return new EventSchema(List.of( |
| EpProperties |
| .stringEp(Labels.from( |
| "runtime", |
| "I was added at runtime", |
| ""), "runtime", SO.TEXT)) |
| ); |
| } |
| |
| @Override |
| public void onPipelineStarted(IDataProcessorParameters params, SpOutputCollector collector, EventProcessorRuntimeContext runtimeContext) { |
| |
| } |
| |
| @Override |
| public void onEvent(Event event, SpOutputCollector collector) { |
| |
| } |
| |
| @Override |
| public void onPipelineStopped() { |
| |
| } |
| |
| |
| } |