| /* |
| * 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 ${package}; |
| |
| import org.apache.nifi.components.PropertyDescriptor; |
| import org.apache.nifi.flowfile.FlowFile; |
| import org.apache.nifi.annotation.behavior.ReadsAttribute; |
| import org.apache.nifi.annotation.behavior.ReadsAttributes; |
| import org.apache.nifi.annotation.behavior.WritesAttribute; |
| import org.apache.nifi.annotation.behavior.WritesAttributes; |
| import org.apache.nifi.annotation.lifecycle.OnScheduled; |
| import org.apache.nifi.annotation.documentation.CapabilityDescription; |
| import org.apache.nifi.annotation.documentation.SeeAlso; |
| import org.apache.nifi.annotation.documentation.Tags; |
| import org.apache.nifi.processor.exception.ProcessException; |
| import org.apache.nifi.processor.AbstractProcessor; |
| import org.apache.nifi.processor.ProcessContext; |
| import org.apache.nifi.processor.ProcessSession; |
| import org.apache.nifi.processor.ProcessorInitializationContext; |
| import org.apache.nifi.processor.Relationship; |
| import org.apache.nifi.processor.util.StandardValidators; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| @Tags({"example"}) |
| @CapabilityDescription("Provide a description") |
| @SeeAlso({}) |
| @ReadsAttributes({@ReadsAttribute(attribute="", description="")}) |
| @WritesAttributes({@WritesAttribute(attribute="", description="")}) |
| public class MyProcessor extends AbstractProcessor { |
| |
| public static final PropertyDescriptor MY_PROPERTY = new PropertyDescriptor |
| .Builder().name("MY_PROPERTY") |
| .displayName("My property") |
| .description("Example Property") |
| .required(true) |
| .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) |
| .build(); |
| |
| public static final Relationship MY_RELATIONSHIP = new Relationship.Builder() |
| .name("MY_RELATIONSHIP") |
| .description("Example relationship") |
| .build(); |
| |
| private List<PropertyDescriptor> descriptors; |
| |
| private Set<Relationship> relationships; |
| |
| @Override |
| protected void init(final ProcessorInitializationContext context) { |
| descriptors = new ArrayList<>(); |
| descriptors.add(MY_PROPERTY); |
| descriptors = Collections.unmodifiableList(descriptors); |
| |
| relationships = new HashSet<>(); |
| relationships.add(MY_RELATIONSHIP); |
| relationships = Collections.unmodifiableSet(relationships); |
| } |
| |
| @Override |
| public Set<Relationship> getRelationships() { |
| return this.relationships; |
| } |
| |
| @Override |
| public final List<PropertyDescriptor> getSupportedPropertyDescriptors() { |
| return descriptors; |
| } |
| |
| @OnScheduled |
| public void onScheduled(final ProcessContext context) { |
| |
| } |
| |
| @Override |
| public void onTrigger(final ProcessContext context, final ProcessSession session) { |
| FlowFile flowFile = session.get(); |
| if ( flowFile == null ) { |
| return; |
| } |
| // TODO implement |
| } |
| } |