/*
* Copyright (c) 2010-2016 Evolveum
*
* 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.
*/
package com.evolveum.midpoint.util;
import com.evolveum.midpoint.util.exception.SystemException;
import com.evolveum.midpoint.util.logging.LoggingUtils;
import com.evolveum.midpoint.util.logging.Trace;
import com.evolveum.midpoint.util.logging.TraceManager;
import java.io.*;
/**
* @author mederly
*/
public class SystemUtil {
private static final Trace LOGGER = TraceManager.getTrace(SystemUtil.class);
public static void executeCommand(String command, String input, StringBuilder output) throws IOException {
LOGGER.debug("Executing {}", command);
try {
Process process = Runtime.getRuntime().exec(command);
Writer writer = new OutputStreamWriter(process.getOutputStream());
writer.append(input);
writer.close();
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
while ((line = reader.readLine()) != null) {
output.append(line).append("\n");
}
try {
process.waitFor();
} catch (InterruptedException e) {
throw new SystemException("Got interruptedException while waiting for external command execution", e);
}
} catch (IOException e) {
LoggingUtils.logUnexpectedException(LOGGER, "Couldn't execute command {}", e, command);
throw e;
}
LOGGER.debug("Finished executing {}; result has a length of {} characters", command, output.length());
}
}