| package org.apache.streampipes.pe.examples.jvm.staticproperty; |
| |
| import org.apache.streampipes.model.graph.DataProcessorDescription; |
| import org.apache.streampipes.model.graph.DataProcessorInvocation; |
| import org.apache.streampipes.pe.examples.jvm.base.DummyEngine; |
| import org.apache.streampipes.pe.examples.jvm.base.DummyParameters; |
| import org.apache.streampipes.sdk.builder.ProcessingElementBuilder; |
| import org.apache.streampipes.sdk.builder.StreamRequirementsBuilder; |
| import org.apache.streampipes.sdk.extractor.ProcessingElementParameterExtractor; |
| import org.apache.streampipes.sdk.helpers.*; |
| import org.apache.streampipes.wrapper.standalone.ConfiguredEventProcessor; |
| import org.apache.streampipes.wrapper.standalone.declarer.StandaloneEventProcessingDeclarer; |
| |
| public class CodeInputExampleController extends StandaloneEventProcessingDeclarer<DummyParameters> { |
| |
| private static final String CODE_KEY = "code-key"; |
| |
| @Override |
| public DataProcessorDescription declareModel() { |
| return ProcessingElementBuilder.create("org.apache.streampipes.examples.staticproperty" + |
| ".codeinput", "Code Input Example", "") |
| .requiredStream(StreamRequirementsBuilder. |
| create() |
| .requiredProperty(EpRequirements.anyProperty()) |
| .build()) |
| .outputStrategy(OutputStrategies.userDefined()) |
| .supportedProtocols(SupportedProtocols.kafka()) |
| .supportedFormats(SupportedFormats.jsonFormat()) |
| |
| // create a required code block |
| .requiredCodeblock(Labels.from(CODE_KEY, "Code", ""), CodeLanguage.Javascript) |
| |
| .build(); |
| } |
| |
| @Override |
| public ConfiguredEventProcessor<DummyParameters> onInvocation(DataProcessorInvocation graph, ProcessingElementParameterExtractor extractor) { |
| |
| // Extract the code parameter value |
| String code = extractor.codeblockValue(CODE_KEY); |
| |
| // now the text parameter would be added to a parameter class (omitted for this example) |
| |
| return new ConfiguredEventProcessor<>(new DummyParameters(graph), DummyEngine::new); |
| } |
| } |
| |
