| /* |
| * 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.nifi.stateless.basics; |
| |
| import org.apache.nifi.flowfile.FlowFile; |
| import org.apache.nifi.processor.Relationship; |
| import org.apache.nifi.flow.VersionedPort; |
| import org.apache.nifi.flow.VersionedProcessor; |
| import org.apache.nifi.stateless.StatelessSystemIT; |
| import org.apache.nifi.stateless.VersionedFlowBuilder; |
| import org.apache.nifi.stateless.config.StatelessConfigurationException; |
| import org.apache.nifi.stateless.flow.DataflowTrigger; |
| import org.apache.nifi.stateless.flow.StatelessDataflow; |
| import org.apache.nifi.stateless.flow.TriggerResult; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class CloneFlowFileIT extends StatelessSystemIT { |
| |
| @Test |
| public void testClone() throws IOException, StatelessConfigurationException, InterruptedException { |
| // Build the flow |
| final VersionedFlowBuilder flowBuilder = new VersionedFlowBuilder(); |
| final VersionedPort inPort = flowBuilder.createInputPort("In"); |
| final VersionedPort outPort = flowBuilder.createOutputPort("Out"); |
| |
| final VersionedProcessor setAttribute = flowBuilder.createSimpleProcessor("SetAttribute"); |
| setAttribute.setProperties(Collections.singletonMap("foo", "bar")); |
| |
| final VersionedProcessor reverse = flowBuilder.createSimpleProcessor("ReverseContents"); |
| |
| // Clone flowfile from setAttribute to both reverse and output port. Route reverse to output port. |
| flowBuilder.createConnection(inPort, setAttribute, Relationship.ANONYMOUS.getName()); |
| flowBuilder.createConnection(setAttribute, outPort, "success"); |
| flowBuilder.createConnection(setAttribute, reverse, "success"); |
| flowBuilder.createConnection(reverse, outPort, "success"); |
| |
| // Startup the dataflow |
| final StatelessDataflow dataflow = loadDataflow(flowBuilder.getFlowSnapshot(), Collections.emptyList()); |
| |
| // Enqueue data and trigger |
| dataflow.enqueue("Hello".getBytes(StandardCharsets.UTF_8), Collections.singletonMap("abc", "123"), "In"); |
| final DataflowTrigger trigger = dataflow.trigger(); |
| final TriggerResult result = trigger.getResult(); |
| assertTrue(result.isSuccessful()); |
| |
| final List<FlowFile> flowFiles = result.getOutputFlowFiles("Out"); |
| assertEquals(2, flowFiles.size()); |
| |
| final FlowFile first = flowFiles.get(0); |
| assertEquals("123", first.getAttribute("abc")); |
| |
| final FlowFile second = flowFiles.get(1); |
| assertEquals("123", second.getAttribute("abc")); |
| |
| final long countNormal = flowFiles.stream() |
| .filter(flowFile -> readContentAsString(result, flowFile).equals("Hello")) |
| .count(); |
| |
| final long countReversed = flowFiles.stream() |
| .filter(flowFile -> readContentAsString(result, flowFile).equals("olleH")) |
| .count(); |
| |
| assertEquals(1L, countNormal); |
| assertEquals(1L, countReversed); |
| |
| result.acknowledge(); |
| } |
| |
| private String readContentAsString(final TriggerResult result, final FlowFile flowFile) { |
| try { |
| return new String(result.readContentAsByteArray(flowFile), StandardCharsets.UTF_8); |
| } catch (final IOException e) { |
| e.printStackTrace(); |
| Assert.fail("Could not read content"); |
| return null; |
| } |
| } |
| } |