Java Path File Time nio awaitLogMessage(String message, long timeout, Path logFilePath)

Description

Waits for a log message to become present in the specified log file

License

Apache License

Parameter

Parameter	Description
message	The log message to match on
timeout	The timeout period in milliseconds for the log message to appear
logFilePath	The path to the log file to match content

Return

true if the log message was found else false

Declaration

public static boolean awaitLogMessage(String message, long timeout, Path logFilePath) 

Method Source Code

//package com.java2s;
/*//from w w  w .jav  a  2 s .  c om
* #%L
* Wildfly Camel :: Testsuite
* %%
* Copyright (C) 2013 - 2017 RedHat
* %%
* Licensed 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.
* #L%
*/

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;

public class Main {
    private static final Path SERVER_LOG = Paths.get(System.getProperty("jboss.server.log.dir"))
            .resolve("server.log");

    /**
     * Waits for a log message to become present in the default standalone server.log
     * @param message The log message to match on
     * @param timeout The timeout period in milliseconds for the log message to appear
     * @return true if the log message was found else false
     */
    public static boolean awaitLogMessage(String message, long timeout) {
        return awaitLogMessage(message, timeout, SERVER_LOG);
    }

    /**
     * Waits for a log message to become present in the specified log file
     * @param message The log message to match on
     * @param timeout The timeout period in milliseconds for the log message to appear
     * @param logFilePath The path to the log file to match content
     * @return true if the log message was found else false
     */
    public static boolean awaitLogMessage(String message, long timeout, Path logFilePath) {
        long start = System.currentTimeMillis();
        do {
            try {
                List<String> logLines = Files.readAllLines(logFilePath);
                if (logLines.stream().filter(line -> line.matches(message)).count() > 0) {
                    return true;
                }
            } catch (Exception e) {
                e.printStackTrace();
                return false;
            }
            try {
                Thread.sleep(100L);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
                return false;
            }
        } while (!((System.currentTimeMillis() - start) >= timeout));
        return false;
    }
}

Related

1. addTimestamp(Path base, TimeUnit unit)
2. fileCreationTime(Path path)
3. getLastAccessTime(Path file)
4. getLastModificationTime(Path path)
5. getLastModifiedTime(Path path)