| /* |
| * 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.geode.internal.logging; |
| |
| import static org.assertj.core.api.Assertions.assertThat; |
| |
| import java.io.BufferedReader; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.PrintWriter; |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| import java.util.Date; |
| import java.util.Random; |
| |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| import org.apache.geode.LogWriter; |
| import org.apache.geode.test.junit.categories.LoggingTest; |
| |
| /** |
| * Unit tests for {@link SortLogFile}. |
| * |
| * @since GemFire 3.0 |
| */ |
| @Category(LoggingTest.class) |
| public class SortLogFileTest { |
| |
| /** |
| * Generates a "log file" whose entry timestamps are in a random order. Then it sorts the log file |
| * and asserts that the entries are sorted order. |
| */ |
| @Test |
| public void testRandomLog() throws Exception { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(baos), true); |
| LogWriter logWriter = new RandomLogWriter(printWriter); |
| |
| for (int i = 0; i < 100; i++) { |
| logWriter.info(String.valueOf(i)); |
| } |
| |
| printWriter.flush(); |
| printWriter.close(); |
| |
| byte[] bytes = baos.toByteArray(); |
| |
| ByteArrayInputStream bais = new ByteArrayInputStream(bytes); |
| |
| StringWriter stringWriter = new StringWriter(); |
| printWriter = new PrintWriter(stringWriter, true); |
| SortLogFile.sortLogFile(bais, printWriter); |
| |
| String sorted = stringWriter.toString(); |
| |
| BufferedReader reader = new BufferedReader(new StringReader(sorted)); |
| LogFileParser parser = new LogFileParser(null, reader); |
| String prevTimestamp = null; |
| while (parser.hasMoreEntries()) { |
| LogFileParser.LogEntry entry = parser.getNextEntry(); |
| String timestamp = entry.getTimestamp(); |
| if (prevTimestamp != null) { |
| assertThat(prevTimestamp.compareTo(timestamp)) |
| .as("Prev: " + prevTimestamp + ", current: " + timestamp) |
| .isLessThanOrEqualTo(0); |
| } |
| prevTimestamp = entry.getTimestamp(); |
| } |
| } |
| |
| /** |
| * A {@code LogWriter} that generates random time stamps. |
| */ |
| private static class RandomLogWriter extends LocalLogWriter { |
| |
| /** Used to generate a random date */ |
| private final Random random = new Random(); |
| |
| /** |
| * Creates a new {@code RandomLogWriter} that logs to the given {@code PrintWriter}. |
| */ |
| private RandomLogWriter(PrintWriter printWriter) { |
| super(ALL_LEVEL, printWriter); |
| } |
| |
| /** |
| * Ignores {@code date} and returns the timestamp for a random date. |
| */ |
| @Override |
| protected String formatDate(Date date) { |
| long time = date.getTime() + random.nextInt(100_000) * 1_000; |
| date = new Date(time); |
| return super.formatDate(date); |
| } |
| } |
| } |