| /** |
| * 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.distributedlog; |
| |
| import static org.junit.Assert.assertNotNull; |
| |
| import java.util.concurrent.CompletableFuture; |
| import org.apache.distributedlog.api.LogWriter; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Test Cases for RollLogSegments. |
| */ |
| public class TestCancelledRead extends TestDistributedLogBase { |
| private static final Logger logger = LoggerFactory.getLogger(TestRollLogSegments.class); |
| |
| @Test(timeout = 600000) |
| public void testWritingAndTailing() throws Exception { |
| String name = "writing-and-tailing"; |
| DistributedLogConfiguration conf = new DistributedLogConfiguration() |
| .setReadAheadWaitTime(5000) |
| .setOutputBufferSize(0) |
| .setCreateStreamIfNotExists(true) |
| .setImmediateFlushEnabled(true) |
| .setFailFastOnStreamNotReady(true) |
| .setPeriodicFlushFrequencyMilliSeconds(0) |
| .setLockTimeout(DistributedLogConstants.LOCK_IMMEDIATE) |
| .setEnableReadAhead(false) |
| .setLogSegmentRollingIntervalMinutes(0); |
| |
| CompletableFuture<Void> f = new CompletableFuture<>(); |
| long entryId = 0; |
| |
| try (BKDistributedLogManager dlm = (BKDistributedLogManager) createNewDLM(conf, name); |
| LogWriter writer = dlm.startLogSegmentNonPartitioned()) { |
| entryId++; |
| writer.write(DLMTestUtil.getLogRecordInstance(entryId, 100000)); |
| } |
| |
| try (BKDistributedLogManager dlmReader = (BKDistributedLogManager) createNewDLM(conf, name)) { |
| BKAsyncLogReader reader = (BKAsyncLogReader) dlmReader.getAsyncLogReader(DLSN.InitialDLSN); |
| |
| assertNotNull(reader.readNext().get()); |
| |
| conf.setMaxLogSegmentBytes(1000); |
| try (BKDistributedLogManager dlm = (BKDistributedLogManager) createNewDLM(conf, name); |
| LogWriter writer = dlm.startLogSegmentNonPartitioned()) { |
| for (int i = 0; i < 100; i++) { |
| entryId++; |
| writer.write(DLMTestUtil.getLogRecordInstance(entryId, 100)); |
| |
| assertNotNull(reader.readNext().get()); |
| } |
| } finally { |
| reader.asyncClose().get(); |
| } |
| } |
| } |
| } |