1 /* |
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2 * Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package sun.tools.jstatd; |
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27 |
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28 import java.rmi.*; |
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29 import java.rmi.server.*; |
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30 import java.rmi.registry.Registry; |
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31 import java.rmi.registry.LocateRegistry; |
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32 import java.net.MalformedURLException; |
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33 import sun.jvmstat.monitor.remote.*; |
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34 |
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35 /** |
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36 * Application providing remote access to the jvmstat instrumentation |
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37 * exported by local Java Virtual Machine processes. Remote access is |
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38 * provided through an RMI interface. |
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39 * |
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40 * @author Brian Doherty |
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41 * @since 1.5 |
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42 */ |
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43 public class Jstatd { |
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44 |
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45 private static Registry registry; |
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46 private static int port = -1; |
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47 private static boolean startRegistry = true; |
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48 |
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49 private static void printUsage() { |
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50 System.err.println("usage: jstatd [-nr] [-p port] [-n rminame]"); |
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51 } |
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52 |
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53 static void bind(String name, RemoteHostImpl remoteHost) |
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54 throws RemoteException, MalformedURLException, Exception { |
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55 |
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56 try { |
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57 Naming.rebind(name, remoteHost); |
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58 } catch (java.rmi.ConnectException e) { |
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59 /* |
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60 * either the registry is not running or we cannot contact it. |
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61 * start an internal registry if requested. |
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62 */ |
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63 if (startRegistry && registry == null) { |
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64 int localport = (port < 0) ? Registry.REGISTRY_PORT : port; |
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65 registry = LocateRegistry.createRegistry(localport); |
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66 bind(name, remoteHost); |
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67 } else { |
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68 throw e; |
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69 } |
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70 } |
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71 } |
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72 |
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73 @SuppressWarnings("deprecation") // Use of RMISecurityManager |
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74 public static void main(String[] args) { |
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75 String rminame = null; |
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76 int argc = 0; |
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77 |
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78 for ( ; (argc < args.length) && (args[argc].startsWith("-")); argc++) { |
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79 String arg = args[argc]; |
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80 |
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81 if (arg.compareTo("-nr") == 0) { |
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82 startRegistry = false; |
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83 } else if (arg.startsWith("-p")) { |
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84 if (arg.compareTo("-p") != 0) { |
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85 port = Integer.parseInt(arg.substring(2)); |
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86 } else { |
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87 argc++; |
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88 if (argc >= args.length) { |
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89 printUsage(); |
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90 System.exit(1); |
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91 } |
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92 port = Integer.parseInt(args[argc]); |
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93 } |
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94 } else if (arg.startsWith("-n")) { |
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95 if (arg.compareTo("-n") != 0) { |
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96 rminame = arg.substring(2); |
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97 } else { |
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98 argc++; |
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99 if (argc >= args.length) { |
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100 printUsage(); |
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101 System.exit(1); |
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102 } |
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103 rminame = args[argc]; |
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104 } |
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105 } else { |
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106 printUsage(); |
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107 System.exit(1); |
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108 } |
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109 } |
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110 |
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111 if (argc < args.length) { |
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112 printUsage(); |
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113 System.exit(1); |
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114 } |
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115 |
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116 if (System.getSecurityManager() == null) { |
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117 System.setSecurityManager(new RMISecurityManager()); |
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118 } |
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119 |
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120 StringBuilder name = new StringBuilder(); |
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121 |
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122 if (port >= 0) { |
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123 name.append("//:").append(port); |
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124 } |
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125 |
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126 if (rminame == null) { |
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127 rminame = "JStatRemoteHost"; |
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128 } |
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129 |
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130 name.append("/").append(rminame); |
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131 |
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132 try { |
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133 // use 1.5.0 dynamically generated subs. |
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134 System.setProperty("java.rmi.server.ignoreSubClasses", "true"); |
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135 RemoteHostImpl remoteHost = new RemoteHostImpl(); |
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136 RemoteHost stub = (RemoteHost) UnicastRemoteObject.exportObject( |
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137 remoteHost, 0); |
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138 bind(name.toString(), remoteHost); |
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139 System.out.println("jstatd started (bound to " + name.toString() + ")"); |
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140 System.out.flush(); |
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141 } catch (MalformedURLException e) { |
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142 if (rminame != null) { |
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143 System.out.println("Bad RMI server name: " + rminame); |
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144 } else { |
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145 System.out.println("Bad RMI URL: " + name); |
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146 } |
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147 e.printStackTrace(System.out); |
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148 System.exit(1); |
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149 } catch (java.rmi.ConnectException e) { |
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150 // could not attach to or create a registry |
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151 System.out.println("Could not contact RMI registry"); |
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152 e.printStackTrace(System.out); |
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153 System.exit(1); |
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154 } catch (RemoteException e) { |
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155 System.out.println("Could not bind " + name + " to RMI Registry"); |
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156 e.printStackTrace(System.out); |
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157 System.exit(1); |
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158 } catch (Exception e) { |
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159 System.out.println("Could not create remote object"); |
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160 e.printStackTrace(System.out); |
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161 System.exit(1); |
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162 } |
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163 } |
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164 } |
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