| /** |
| * 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 com.datatorrent.lib.io.fs; |
| |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileWriter; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.datatorrent.lib.testbench.CollectorTestSink; |
| |
| /** |
| * Functional tests for {@link com.datatorrent.lib.io.fs.TailFsInputOperator} |
| * <p> |
| */ |
| public class TailFsInputOperatorTest |
| { |
| |
| private String filePath = "target/tailFsInputOperator.txt"; |
| |
| @Test |
| public void testTailInputOperator() throws Exception |
| { |
| FileWriter fstream = new FileWriter(filePath); |
| BufferedWriter out = new BufferedWriter(fstream); |
| out.write("Hello Java\n"); |
| out.close(); |
| |
| TailFsInputOperator oper = new TailFsInputOperator(); |
| oper.setFilePath(filePath); |
| CollectorTestSink<Object> sink = new CollectorTestSink<Object>(); |
| oper.output.setSink(sink); |
| oper.setDelay(1); |
| oper.setNumberOfTuples(10); |
| oper.setup(null); |
| oper.activate(null); |
| oper.beginWindow(0); |
| oper.emitTuples(); |
| oper.endWindow(); |
| fstream = new FileWriter(filePath, true); |
| out = new BufferedWriter(fstream); |
| out.write("Hello Java\n"); |
| out.close(); |
| oper.beginWindow(1); |
| oper.emitTuples(); |
| oper.endWindow(); |
| oper.deactivate(); |
| Assert.assertEquals(2, sink.collectedTuples.size()); |
| out.close(); |
| File file = new File(filePath); |
| if (file.exists()) { |
| file.delete(); |
| } |
| } |
| |
| @Test |
| public void testTailFromEnd() throws Exception |
| { |
| FileWriter fstream = new FileWriter(filePath); |
| BufferedWriter out = new BufferedWriter(fstream); |
| out.write("Hello Java"); |
| out.close(); |
| |
| TailFsInputOperator oper = new TailFsInputOperator(); |
| oper.setFilePath(filePath); |
| CollectorTestSink<Object> sink = new CollectorTestSink<Object>(); |
| oper.output.setSink(sink); |
| oper.setDelay(1); |
| oper.setEnd(true); |
| oper.setNumberOfTuples(10); |
| oper.setup(null); |
| oper.activate(null); |
| oper.beginWindow(0); |
| oper.emitTuples(); |
| oper.endWindow(); |
| fstream = new FileWriter(filePath, true); |
| out = new BufferedWriter(fstream); |
| out.write("Hello Java\n"); |
| out.close(); |
| oper.beginWindow(1); |
| oper.emitTuples(); |
| oper.endWindow(); |
| oper.deactivate(); |
| Assert.assertEquals(1, sink.collectedTuples.size()); |
| Assert.assertEquals("Hello Java", sink.collectedTuples.get(0)); |
| out.close(); |
| File file = new File(filePath); |
| if (file.exists()) { |
| file.delete(); |
| } |
| } |
| |
| @Test |
| public void testDelimiter() throws Exception |
| { |
| FileWriter fstream = new FileWriter(filePath); |
| BufferedWriter out = new BufferedWriter(fstream); |
| out.write("Hello Java"); |
| out.close(); |
| |
| TailFsInputOperator oper = new TailFsInputOperator(); |
| oper.setFilePath(filePath); |
| oper.setDelimiter('|'); |
| CollectorTestSink<Object> sink = new CollectorTestSink<Object>(); |
| oper.output.setSink(sink); |
| oper.setDelay(1); |
| oper.setNumberOfTuples(10); |
| oper.setup(null); |
| oper.activate(null); |
| oper.beginWindow(0); |
| oper.emitTuples(); |
| oper.endWindow(); |
| fstream = new FileWriter(filePath, true); |
| out = new BufferedWriter(fstream); |
| out.write("Hello Java|"); |
| out.close(); |
| oper.beginWindow(1); |
| oper.emitTuples(); |
| oper.endWindow(); |
| oper.deactivate(); |
| Assert.assertEquals(1, sink.collectedTuples.size()); |
| Assert.assertEquals("Hello JavaHello Java", sink.collectedTuples.get(0)); |
| out.close(); |
| File file = new File(filePath); |
| if (file.exists()) { |
| file.delete(); |
| } |
| } |
| |
| @Test |
| public void testTruncation() throws Exception |
| { |
| FileWriter fstream = new FileWriter(filePath); |
| BufferedWriter out = new BufferedWriter(fstream); |
| out.write("Hello Java"); |
| out.close(); |
| TailFsInputOperator oper = new TailFsInputOperator(); |
| oper.setFilePath(filePath); |
| CollectorTestSink<Object> sink = new CollectorTestSink<Object>(); |
| oper.output.setSink(sink); |
| oper.setDelay(1); |
| oper.setEnd(true); |
| oper.setNumberOfTuples(10); |
| oper.setup(null); |
| oper.activate(null); |
| File file = new File(filePath); |
| if (file.exists()) { |
| file.renameTo(new File(filePath + ".bk")); |
| } |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException e) { |
| //fixme |
| } |
| fstream = new FileWriter(filePath); |
| out = new BufferedWriter(fstream); |
| out.write("Hello\n"); |
| out.close(); |
| oper.beginWindow(0); |
| oper.emitTuples(); |
| oper.endWindow(); |
| oper.deactivate(); |
| file = new File(filePath); |
| if (file.exists()) { |
| file.delete(); |
| } |
| file = new File(filePath + ".bk"); |
| if (file.exists()) { |
| file.delete(); |
| } |
| Assert.assertEquals(1, sink.collectedTuples.size()); |
| Assert.assertEquals("Hello", sink.collectedTuples.get(0)); |
| } |
| |
| /** |
| * This tests the case when the file is rotated and new file has same size as old file |
| * |
| * @throws Exception |
| */ |
| |
| @Test |
| public void testTruncationWithSameFileSize() throws Exception |
| { |
| FileWriter fstream = new FileWriter(filePath); |
| BufferedWriter out = new BufferedWriter(fstream); |
| out.write("Hello Java\n"); |
| out.close(); |
| TailFsInputOperator oper = new TailFsInputOperator(); |
| oper.setFilePath(filePath); |
| CollectorTestSink<Object> sink = new CollectorTestSink<Object>(); |
| oper.output.setSink(sink); |
| oper.setDelay(1); |
| oper.setEnd(true); |
| oper.setNumberOfTuples(10); |
| oper.setup(null); |
| oper.activate(null); |
| File file = new File(filePath); |
| if (file.exists()) { |
| file.renameTo(new File(filePath + ".bk")); |
| } |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException e) { |
| //fixme |
| } |
| fstream = new FileWriter(filePath); |
| out = new BufferedWriter(fstream); |
| out.write("Hello abcd\n"); |
| out.close(); |
| oper.beginWindow(0); |
| oper.emitTuples(); |
| oper.endWindow(); |
| oper.deactivate(); |
| file = new File(filePath); |
| if (file.exists()) { |
| file.delete(); |
| } |
| file = new File(filePath + ".bk"); |
| if (file.exists()) { |
| file.delete(); |
| } |
| Assert.assertEquals(1, sink.collectedTuples.size()); |
| Assert.assertEquals("Hello abcd", sink.collectedTuples.get(0)); |
| |
| } |
| |
| } |