/*
* 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.splunk.util;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
public class LogGenerator {
static final String LOG_MESSAGE = "This is log message # %s";
private final int numLogs;
private final String delimiter;
public LogGenerator(int numLogs, String delimiter) {
this.numLogs = numLogs;
this.delimiter = delimiter;
}
public void generate(final File file) throws IOException {
try (OutputStream rawOut = new FileOutputStream(file);
BufferedOutputStream out = new BufferedOutputStream(rawOut)) {
for (int i = 0; i < numLogs; i++) {
if (i > 0) {
out.write(delimiter.getBytes(StandardCharsets.UTF_8));
}
final String message = String.format(LOG_MESSAGE, i);
out.write(message.getBytes(StandardCharsets.UTF_8));
}
System.out.println("Done generating " + numLogs + " messages");
out.flush();
}
}
public static void main(String[] args) throws IOException {
if (args == null || args.length != 3) {
System.err.println("USAGE: LogGenerator <num_logs> <delimiter> <file>");
System.exit(1);
}
final int numLogs = Integer.parseInt(args[0]);
final String delim = args[1];
final File file = new File(args[2]);
if (file.exists()) {
file.delete();
}
final LogGenerator generator = new LogGenerator(numLogs, delim);
generator.generate(file);
}
}