Guillaume Nodet | 05fac96 | 2009-04-27 10:01:58 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
| 3 | * contributor license agreements. See the NOTICE file distributed with |
| 4 | * this work for additional information regarding copyright ownership. |
| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
| 6 | * (the "License"); you may not use this file except in compliance with |
| 7 | * the License. You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | package org.apache.servicemix.jpm.impl; |
| 18 | |
| 19 | import java.io.BufferedReader; |
| 20 | import java.io.File; |
| 21 | import java.io.FileInputStream; |
| 22 | import java.io.IOException; |
| 23 | import java.io.InputStream; |
| 24 | import java.io.InputStreamReader; |
| 25 | import java.io.InterruptedIOException; |
| 26 | import java.util.HashMap; |
| 27 | import java.util.Map; |
| 28 | |
| 29 | import org.apache.servicemix.jpm.Process; |
| 30 | |
| 31 | public class ProcessImpl implements Process { |
| 32 | |
| 33 | private int pid; |
| 34 | //private File input; |
| 35 | //private File output; |
| 36 | //private File error; |
| 37 | |
| 38 | public ProcessImpl(int pid/*, File input, File output, File error*/) { |
| 39 | this.pid = pid; |
| 40 | //this.input = input; |
| 41 | //this.output = output; |
| 42 | //this.error = error; |
| 43 | } |
| 44 | |
| 45 | public int getPid() { |
| 46 | return pid; |
| 47 | } |
| 48 | |
| 49 | public boolean isRunning() throws IOException { |
| 50 | if (ScriptUtils.isWindows()) { |
| 51 | Map<String, String> props = new HashMap<String, String>(); |
| 52 | props.put("${pid}", Integer.toString(pid)); |
| 53 | int ret = ScriptUtils.execute("running", props); |
| 54 | return ret == 0; |
| 55 | } else { |
| 56 | try { |
| 57 | java.lang.Process process = new java.lang.ProcessBuilder("ps", "-p", Integer.toString(pid)).start(); |
| 58 | BufferedReader r = new BufferedReader(new InputStreamReader(process.getInputStream())); |
| 59 | r.readLine(); // skip headers |
| 60 | String s = r.readLine(); |
| 61 | boolean running = s != null && s.length() > 0; |
| 62 | int ret = process.waitFor(); |
| 63 | return running; |
| 64 | } catch (InterruptedException e) { |
| 65 | throw new InterruptedIOException(); |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | public void destroy() throws IOException { |
| 71 | int ret; |
| 72 | if (ScriptUtils.isWindows()) { |
| 73 | Map<String, String> props = new HashMap<String, String>(); |
| 74 | props.put("${pid}", Integer.toString(pid)); |
| 75 | ret = ScriptUtils.execute("destroy", props); |
| 76 | } else { |
| 77 | ret = ScriptUtils.executeProcess(new java.lang.ProcessBuilder("kill", "-9", Integer.toString(pid))); |
| 78 | } |
| 79 | if (ret != 0) { |
| 80 | throw new IOException("Unable to destroy proces, it may be already terminated"); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | /* |
| 85 | public OutputStream getInputStream() throws FileNotFoundException { |
| 86 | return new FileOutputStream(input); |
| 87 | } |
| 88 | |
| 89 | public InputStream getOutputStream() throws FileNotFoundException { |
| 90 | return new FileInputStream(output); |
| 91 | } |
| 92 | |
| 93 | public InputStream getErrorStream() throws FileNotFoundException { |
| 94 | return new FileInputStream(error); |
| 95 | } |
| 96 | */ |
| 97 | |
| 98 | public int waitFor() throws InterruptedException { |
| 99 | return 0; |
| 100 | } |
| 101 | |
| 102 | public int exitValue() { |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | public static Process create(File dir, String command) throws IOException { |
| 107 | //File input = File.createTempFile("jpm.", ".input"); |
| 108 | //File output = File.createTempFile("jpm.", ".output"); |
| 109 | //File error = File.createTempFile("jpm.", ".error"); |
| 110 | File pidFile = File.createTempFile("jpm.", ".pid"); |
| 111 | try { |
| 112 | Map<String, String> props = new HashMap<String, String>(); |
| 113 | //props.put("${in.file}", input.getCanonicalPath()); |
| 114 | //props.put("${out.file}", output.getCanonicalPath()); |
| 115 | //props.put("${err.file}", error.getCanonicalPath()); |
| 116 | props.put("${pid.file}", pidFile.getCanonicalPath()); |
| 117 | props.put("${dir}", dir != null ? dir.getCanonicalPath() : ""); |
| 118 | if (ScriptUtils.isWindows()) { |
| 119 | command = command.replaceAll("\"", "\"\""); |
| 120 | } |
| 121 | props.put("${command}", command); |
| 122 | int ret = ScriptUtils.execute("start", props); |
| 123 | if (ret != 0) { |
| 124 | throw new IOException("Unable to create process (error code: " + ret + ")"); |
| 125 | } |
| 126 | int pid = readPid(pidFile); |
| 127 | return new ProcessImpl(pid/*, input, output, error*/); |
| 128 | } finally { |
| 129 | pidFile.delete(); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | public static Process attach(int pid) throws IOException { |
| 134 | return new ProcessImpl(pid); |
| 135 | } |
| 136 | |
| 137 | private static int readPid(File pidFile) throws IOException { |
| 138 | InputStream is = new FileInputStream(pidFile); |
| 139 | try { |
| 140 | BufferedReader r = new BufferedReader(new InputStreamReader(is)); |
| 141 | String pidString = r.readLine(); |
| 142 | return Integer.valueOf(pidString); |
| 143 | } finally { |
| 144 | try { |
| 145 | is.close(); |
| 146 | } catch (IOException e) {} |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | } |