| /** |
| * 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.camel.component.file.strategy; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.camel.ContextTestSupport; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.mock.MockEndpoint; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| /** |
| * Tests the MarkerFileExclusiveReadLockStrategy in a multi-threaded scenario. |
| */ |
| public class MarkerFileExclusiveReadLockStrategyTest extends ContextTestSupport { |
| |
| private static final transient Log LOG = LogFactory.getLog(MarkerFileExclusiveReadLockStrategyTest.class); |
| private static final int NUMBER_OF_THREADS = 5; |
| private AtomicInteger numberOfFilesProcessed = new AtomicInteger(0); |
| |
| public void testMultithreadedLocking() throws Exception { |
| deleteDirectory("target/marker/"); |
| createDirectory("target/marker/in"); |
| |
| MockEndpoint mock = getMockEndpoint("mock:result"); |
| mock.expectedMessageCount(2); |
| mock.expectedFileExists("target/marker/out/file1.dat"); |
| mock.expectedFileExists("target/marker/out/file2.dat"); |
| |
| writeFiles(); |
| |
| assertMockEndpointsSatisfied(); |
| |
| String content = context.getTypeConverter().convertTo(String.class, new File("target/marker/out/file1.dat").getAbsoluteFile()); |
| String[] lines = content.split(LS); |
| for (int i = 0; i < 20; i++) { |
| assertEquals("Line " + i, lines[i]); |
| } |
| |
| content = context.getTypeConverter().convertTo(String.class, new File("target/marker/out/file2.dat").getAbsoluteFile()); |
| lines = content.split(LS); |
| for (int i = 0; i < 20; i++) { |
| assertEquals("Line " + i, lines[i]); |
| } |
| |
| waitUntilCompleted(); |
| |
| assertFileDoesNotExists("target/marker/in/file1.dat.camelLock"); |
| assertFileDoesNotExists("target/marker/in/file2.dat.camelLock"); |
| |
| assertFileDoesNotExists("target/marker/in/file1.dat"); |
| assertFileDoesNotExists("target/marker/in/file2.dat"); |
| |
| assertEquals(2, this.numberOfFilesProcessed.get()); |
| } |
| |
| private void writeFiles() throws Exception { |
| LOG.debug("Writing files..."); |
| |
| FileOutputStream fos = new FileOutputStream("target/marker/in/file1.dat"); |
| FileOutputStream fos2 = new FileOutputStream("target/marker/in/file2.dat"); |
| for (int i = 0; i < 20; i++) { |
| fos.write(("Line " + i + LS).getBytes()); |
| fos2.write(("Line " + i + LS).getBytes()); |
| LOG.debug("Writing line " + i); |
| } |
| |
| fos.flush(); |
| fos.close(); |
| fos2.flush(); |
| fos2.close(); |
| } |
| |
| @Override |
| protected RouteBuilder createRouteBuilder() throws Exception { |
| return new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| from("file:target/marker/in?readLock=markerFile") |
| .onCompletion() |
| .process(new Processor() { |
| public void process(Exchange exchange) throws Exception { |
| numberOfFilesProcessed.addAndGet(1); |
| } |
| }) |
| .end() |
| .threads(NUMBER_OF_THREADS) |
| .to("file:target/marker/out", "mock:result"); |
| } |
| }; |
| } |
| |
| private void waitUntilCompleted() { |
| while (this.numberOfFilesProcessed.get() < 2) { |
| try { |
| Thread.sleep(10); |
| } catch (InterruptedException e) { |
| // ignore |
| } |
| } |
| } |
| |
| private static void assertFileDoesNotExists(String filename) { |
| File file = new File(filename).getAbsoluteFile(); |
| assertFalse("File " + filename + " should not exist, it should have been deleted after being processed", file.exists()); |
| } |
| |
| } |