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org.apache.jcs.auxiliary.remote.RemoteUtils |
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1 | package org.apache.jcs.auxiliary.remote; |
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2 | ||
3 | /* |
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4 | * Licensed to the Apache Software Foundation (ASF) under one |
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5 | * or more contributor license agreements. See the NOTICE file |
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6 | * distributed with this work for additional information |
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7 | * regarding copyright ownership. The ASF licenses this file |
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8 | * to you under the Apache License, Version 2.0 (the |
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9 | * "License"); you may not use this file except in compliance |
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10 | * with the License. You may obtain a copy of the License at |
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11 | * |
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12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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13 | * |
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14 | * Unless required by applicable law or agreed to in writing, |
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15 | * software distributed under the License is distributed on an |
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16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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17 | * KIND, either express or implied. See the License for the |
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18 | * specific language governing permissions and limitations |
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19 | * under the License. |
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20 | */ |
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21 | ||
22 | import java.io.IOException; |
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23 | import java.io.InputStream; |
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24 | import java.rmi.RMISecurityManager; |
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25 | import java.rmi.RemoteException; |
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26 | import java.rmi.registry.LocateRegistry; |
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27 | import java.rmi.registry.Registry; |
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28 | import java.util.Enumeration; |
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29 | import java.util.Properties; |
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30 | ||
31 | import org.apache.commons.logging.Log; |
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32 | import org.apache.commons.logging.LogFactory; |
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33 | ||
34 | /** |
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35 | * This class provides some basic utilities for doing things such as starting |
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36 | * the registry properly. |
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37 | */ |
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38 | public class RemoteUtils |
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39 | { |
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40 | 28 | private final static Log log = LogFactory.getLog( RemoteUtils.class ); |
41 | ||
42 | /** No instances please. */ |
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43 | private RemoteUtils() |
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44 | { |
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45 | 0 | super(); |
46 | 0 | } |
47 | ||
48 | /** |
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49 | * Creates and exports a registry on the specified port of the local host. |
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50 | * <p> |
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51 | * @param port |
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52 | * @return the port the registry was started on |
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53 | * @throws RemoteException |
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54 | */ |
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55 | public static int createRegistry( class="keyword">int port ) |
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56 | throws RemoteException |
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57 | { |
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58 | 14 | if ( log.isInfoEnabled() ) |
59 | { |
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60 | 14 | log.info( "createRegistry> setting security manager" ); |
61 | } |
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62 | 14 | System.setSecurityManager( new RMISecurityManager() ); |
63 | ||
64 | 14 | if ( port < 1024 ) |
65 | { |
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66 | 0 | if ( log.isInfoEnabled() ) |
67 | { |
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68 | 0 | log.info( "Port chosen was less than 1024, will use default [" + Registry.REGISTRY_PORT + "] instead." ); |
69 | } |
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70 | 0 | port = Registry.REGISTRY_PORT; |
71 | } |
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72 | ||
73 | 14 | if ( log.isInfoEnabled() ) |
74 | { |
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75 | 14 | log.info( "createRegistry> creating registry on port [" + port + "]" ); |
76 | } |
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77 | 14 | LocateRegistry.createRegistry( port ); |
78 | 7 | return port; |
79 | } |
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80 | ||
81 | /** |
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82 | * Loads properties for the named props file. |
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83 | * <p> |
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84 | * @param propFile |
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85 | * @return The properties object for the file |
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86 | * @throws IOException |
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87 | */ |
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88 | public static Properties loadProps( String propFile ) |
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89 | throws IOException |
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90 | { |
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91 | 7 | InputStream is = RemoteUtils.class.getResourceAsStream( propFile ); |
92 | 7 | Properties props = new Properties(); |
93 | try |
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94 | { |
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95 | 7 | props.load( is ); |
96 | 7 | if ( log.isDebugEnabled() ) |
97 | { |
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98 | 0 | log.debug( "props.size=" + props.size() ); |
99 | } |
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100 | ||
101 | 7 | if ( log.isDebugEnabled() ) |
102 | { |
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103 | 0 | if ( props != null ) |
104 | { |
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105 | 0 | Enumeration en = props.keys(); |
106 | 0 | StringBuffer buf = new StringBuffer(); |
107 | 0 | while ( en.hasMoreElements() ) |
108 | { |
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109 | 0 | String key = (String) en.nextElement(); |
110 | 0 | buf.append( "\n" + key + " = " + props.getProperty( key ) ); |
111 | 0 | } |
112 | 0 | log.debug( buf.toString() ); |
113 | 0 | } |
114 | else |
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115 | { |
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116 | 0 | log.debug( "props is null" ); |
117 | } |
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118 | } |
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119 | ||
120 | } |
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121 | 0 | catch ( Exception ex ) |
122 | { |
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123 | 0 | log.error( "Error loading remote properties, for file name [" + propFile + "]", ex ); |
124 | } |
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125 | finally |
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126 | { |
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127 | 7 | if ( is != null ) |
128 | { |
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129 | 7 | is.close(); |
130 | 7 | } |
131 | 0 | } |
132 | 7 | return props; |
133 | } |
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134 | } |
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