| /* |
| * 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.processors.standard; |
| |
| import org.apache.commons.lang3.SystemUtils; |
| import org.apache.nifi.util.MockFlowFile; |
| import org.apache.nifi.util.MockProcessContext; |
| import org.apache.nifi.util.TestRunner; |
| import org.apache.nifi.util.TestRunners; |
| import org.junit.After; |
| import org.junit.Assume; |
| import org.junit.Before; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Random; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicLong; |
| import java.util.stream.Collectors; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class AbstractTestTailFileScenario { |
| public static final String TEST_DIRECTORY = "testTailFileScenario"; |
| public static final String TARGET_FILE_PATH = "target/" + TEST_DIRECTORY + "/in.txt"; |
| public static final String NUL_SUBSTITUTE = "X"; |
| public static final Long POST_ROLLOVER_WAIT_PERSIOD_SECONDS = 100L; |
| |
| protected File file; |
| protected RandomAccessFile randomAccessFile; |
| |
| private TailFile processor; |
| protected TestRunner runner; |
| |
| private AtomicBoolean stopAfterEachTrigger; |
| |
| protected AtomicLong wordIndex; |
| protected AtomicLong rolloverIndex; |
| protected AtomicLong timeAdjustment; |
| protected AtomicBoolean rolloverSwitchPending; |
| |
| protected LinkedList<Long> nulPositions; |
| |
| protected List<String> expected; |
| private Random random; |
| |
| @Before |
| public void setUp() throws IOException { |
| System.setProperty("org.slf4j.simpleLogger.log.org.apache.nifi.processors.standard", "TRACE"); |
| |
| clean(); |
| |
| File directory = new File("target/" + TEST_DIRECTORY); |
| if (!directory.exists()) { |
| assertTrue(directory.mkdirs()); |
| } |
| |
| createTargetFile(); |
| randomAccessFile = new RandomAccessFile(file, "rw"); |
| |
| processor = new TailFile() { |
| @Override |
| public long getCurrentTimeMs() { |
| return super.getCurrentTimeMs() + timeAdjustment.get(); |
| } |
| }; |
| runner = TestRunners.newTestRunner(processor); |
| runner.setProperty(TailFile.FILENAME, TARGET_FILE_PATH); |
| runner.setProperty(TailFile.ROLLING_FILENAME_PATTERN, "in.txt*"); |
| runner.setProperty(TailFile.REREAD_ON_NUL, "true"); |
| runner.setProperty(TailFile.POST_ROLLOVER_TAIL_PERIOD, POST_ROLLOVER_WAIT_PERSIOD_SECONDS + " sec"); |
| runner.assertValid(); |
| |
| runner.run(1, false, true); |
| |
| stopAfterEachTrigger = new AtomicBoolean(false); |
| |
| nulPositions = new LinkedList<>(); |
| wordIndex = new AtomicLong(1); |
| rolloverIndex = new AtomicLong(1); |
| timeAdjustment = new AtomicLong(0); |
| rolloverSwitchPending = new AtomicBoolean(false); |
| |
| expected = new ArrayList<>(); |
| |
| random = new Random(); |
| } |
| |
| @After |
| public void tearDown() throws IOException { |
| if (randomAccessFile != null) { |
| randomAccessFile.close(); |
| } |
| |
| processor.cleanup(new MockProcessContext(processor)); |
| } |
| |
| public void testScenario(List<Action> actions) throws Exception { |
| testScenario(actions, false); |
| |
| tearDown(); |
| setUp(); |
| |
| testScenario(actions, true); |
| } |
| |
| public void testScenario(List<Action> actions, boolean stopAfterEachTrigger) throws Exception { |
| if (actions.contains(Action.ROLLOVER)) { |
| Assume.assumeTrue("Test wants to rename an open file which is not allowed on Windows", !SystemUtils.IS_OS_WINDOWS); |
| } |
| |
| // GIVEN |
| this.stopAfterEachTrigger.set(stopAfterEachTrigger); |
| |
| // WHEN |
| for (Action action : actions) { |
| action.run(this); |
| } |
| overwriteRemainingNuls(); |
| Action.WRITE_NEW_LINE.run(this); |
| Action.TRIGGER.run(this); |
| Action.EXPIRE_ROLLOVER_WAIT_PERIOD.run(this); |
| Action.TRIGGER.run(this); |
| Action.TRIGGER.run(this); |
| |
| // THEN |
| List<MockFlowFile> flowFiles = runner.getFlowFilesForRelationship(TailFile.REL_SUCCESS); |
| List<String> actual = flowFiles.stream() |
| .map(MockFlowFile::toByteArray) |
| .map(String::new) |
| .collect(Collectors.toList()); |
| |
| assertEquals( |
| stopAfterEachTrigger + " " + actions.toString(), |
| expected.stream().collect(Collectors.joining()), |
| actual.stream().collect(Collectors.joining()) |
| ); |
| } |
| |
| private void clean() { |
| cleanFiles("target/" + TEST_DIRECTORY); |
| } |
| |
| private void cleanFiles(String directory) { |
| final File targetDir = new File(directory); |
| |
| if (targetDir.exists()) { |
| for (final File file : targetDir.listFiles()) { |
| file.delete(); |
| } |
| } |
| } |
| |
| private void createTargetFile() throws IOException { |
| file = new File(TARGET_FILE_PATH); |
| file.delete(); |
| assertTrue(file.createNewFile()); |
| } |
| |
| private void overwriteRemainingNuls() throws Exception { |
| while (!nulPositions.isEmpty()) { |
| Action.OVERWRITE_NUL.run(this); |
| } |
| } |
| |
| private void writeWord() throws IOException { |
| String word = "-word_" + wordIndex.getAndIncrement() + "-"; |
| |
| randomAccessFile.write(word.getBytes()); |
| |
| expected.add(word); |
| } |
| |
| private void writeNewLine() throws IOException { |
| randomAccessFile.write("\n".getBytes()); |
| |
| expected.add("\n"); |
| } |
| |
| private void writeNul() throws IOException { |
| nulPositions.add(randomAccessFile.getFilePointer()); |
| |
| randomAccessFile.write("\0".getBytes()); |
| |
| expected.add(NUL_SUBSTITUTE); |
| } |
| |
| private void overwriteNul() throws IOException { |
| if (!nulPositions.isEmpty()) { |
| Long nulPosition = nulPositions.remove(random.nextInt(nulPositions.size())); |
| |
| long currentPosition = randomAccessFile.getFilePointer(); |
| randomAccessFile.seek(nulPosition); |
| randomAccessFile.write(NUL_SUBSTITUTE.getBytes()); |
| randomAccessFile.seek(currentPosition); |
| } |
| } |
| |
| private void trigger() { |
| runner.run(1, stopAfterEachTrigger.get(), false); |
| } |
| |
| private void rollover() throws IOException { |
| File rolledOverFile = new File(file.getParentFile(), file.getName() + "." + rolloverIndex.getAndIncrement()); |
| file.renameTo(rolledOverFile); |
| |
| createTargetFile(); |
| |
| rolloverSwitchPending.set(true); |
| } |
| |
| private void switchFile() throws Exception { |
| if (rolloverSwitchPending.get()) { |
| overwriteRemainingNuls(); |
| |
| randomAccessFile.close(); |
| randomAccessFile = new RandomAccessFile(file, "rw"); |
| |
| rolloverSwitchPending.set(false); |
| } |
| } |
| |
| private void expireRolloverWaitPeriod() throws Exception { |
| long waitPeriod = POST_ROLLOVER_WAIT_PERSIOD_SECONDS * 1000 + 100; |
| timeAdjustment.set(timeAdjustment.get() + waitPeriod); |
| } |
| |
| protected enum Action { |
| WRITE_WORD(AbstractTestTailFileScenario::writeWord), |
| WRITE_NEW_LINE(AbstractTestTailFileScenario::writeNewLine), |
| WRITE_NUL(AbstractTestTailFileScenario::writeNul), |
| OVERWRITE_NUL(AbstractTestTailFileScenario::overwriteNul), |
| TRIGGER(AbstractTestTailFileScenario::trigger), |
| ROLLOVER(AbstractTestTailFileScenario::rollover), |
| SWITCH_FILE(AbstractTestTailFileScenario::switchFile), |
| EXPIRE_ROLLOVER_WAIT_PERIOD(AbstractTestTailFileScenario::expireRolloverWaitPeriod); |
| |
| private final ActionRunner actionRunner; |
| |
| Action(ActionRunner actionRunner) { |
| this.actionRunner = actionRunner; |
| } |
| |
| void run(AbstractTestTailFileScenario currentTest) throws Exception { |
| actionRunner.runAction(currentTest); |
| } |
| } |
| |
| private interface ActionRunner { |
| void runAction(AbstractTestTailFileScenario currentTest) throws Exception; |
| } |
| } |