| /* |
| * 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.gearpump.cluster.utils; |
| |
| import com.google.common.io.CharStreams; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| |
| public class SystemOperation { |
| |
| public static final Logger LOG = LoggerFactory.getLogger(SystemOperation.class); |
| |
| public static void mount(String name, String target, String type, String data) throws IOException { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("mount -t ").append(type).append(" -o ").append(data).append(" ").append(name).append(" ").append(target); |
| SystemOperation.exec(sb.toString()); |
| } |
| |
| public static void umount(String name) throws IOException { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("umount ").append(name); |
| SystemOperation.exec(sb.toString()); |
| } |
| |
| public static String exec(String cmd) throws IOException { |
| LOG.debug("Shell cmd: " + cmd); |
| Process process = new ProcessBuilder(new String[]{"/bin/bash", "-c", cmd}).start(); |
| try { |
| process.waitFor(); |
| String output = CharStreams.toString(new InputStreamReader(process.getInputStream())); |
| String errorOutput = CharStreams.toString(new InputStreamReader(process.getErrorStream())); |
| LOG.debug("Shell Output: " + output); |
| if (errorOutput.length() != 0) { |
| LOG.error("Shell Error Output: " + errorOutput); |
| throw new IOException(errorOutput); |
| } |
| return output; |
| } catch (InterruptedException ie) { |
| throw new IOException(ie.toString()); |
| } |
| } |
| |
| public static void main(String[] args) throws IOException { |
| SystemOperation.mount("test", "/cgroup/cpu", "cgroup", "cpu"); |
| } |
| } |