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1
8 package org.apache.avalon.phoenix.frontends;
9
10 import java.io.File  ;
11 import javax.servlet.ServletContext ;
12 import javax.servlet.ServletException ;
13 import javax.servlet.http.HttpServlet ;
14 import org.apache.avalon.excalibur.i18n.ResourceManager;
15 import org.apache.avalon.excalibur.i18n.Resources;
16 import org.apache.avalon.framework.CascadingRuntimeException;
17 import org.apache.avalon.framework.ExceptionUtil;
18 import org.apache.avalon.framework.configuration.Configuration;
19 import org.apache.avalon.framework.configuration.DefaultConfigurationBuilder;
20 import org.apache.avalon.framework.container.ContainerUtil;
21 import org.apache.avalon.framework.logger.AvalonFormatter;
22 import org.apache.avalon.framework.logger.LogKitLogger;
23 import org.apache.avalon.framework.logger.Logger;
24 import org.apache.avalon.framework.parameters.Parameters;
25 import org.apache.avalon.phoenix.components.embeddor.SingleAppEmbeddor;
26 import org.apache.avalon.phoenix.interfaces.Embeddor;
27 import org.apache.log.Hierarchy;
28 import org.apache.log.LogTarget;
29 import org.apache.log.Priority;
30 import org.apache.log.output.io.FileTarget;
31
32
39 public class PhoenixServlet
40 extends HttpServlet
41 implements Runnable
42 {
43 private static final Resources REZ =
44 ResourceManager.getPackageResources( PhoenixServlet.class );
45
46 private static final String DEFAULT_LOG_FILE = "/logs/phoenix.log";
47
48 private static final String DEFAULT_FORMAT =
49 "%7.7{priority} %23.23{time:yyyy-MM-dd' 'HH:mm:ss.SSS} [%8.8{category}] (%{context}): "
50 + "%{message}\n%{throwable}";
51
52 private Parameters m_parameters;
53
54 private SingleAppEmbeddor m_embeddor;
55
56 private String getInitParameter( final String name,
57 final String defaultValue )
58 {
59 final String value = getInitParameter( name );
60 if( null == value )
61 {
62 return defaultValue;
63 }
64 else
65 {
66 return value;
67 }
68 }
69
70 public void init()
71 throws ServletException
72 {
73 super.init();
74
75 final ServletContext context = getServletContext();
76 final String phoenixHome = getInitParameter( "phoenix.home", "/WEB-INF" );
77 final String logDestination = getInitParameter( "log-destination" );
78 final String logPriority = getInitParameter( "log-priority" );
79 final String appName = getInitParameter( "application-name", "default" );
80 final String appLoc =
81 getInitParameter( "application-location", phoenixHome + "/" + appName );
82 final String configFile =
83 getInitParameter( "config-file", phoenixHome + "/conf/kernel.xml" );
84
85 m_parameters = new Parameters();
86 m_parameters.setParameter( "phoenix.home", context.getRealPath( phoenixHome ) );
87 m_parameters.setParameter( "log-destination", context.getRealPath( logDestination ) );
88 m_parameters.setParameter( "log-priority", logPriority );
89 m_parameters.setParameter( "application-name", appName );
90 m_parameters.setParameter( "application-location", context.getRealPath( appLoc ) );
91
92 try
93 {
94 final DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
95 final Configuration kernelConf =
96 builder.buildFromFile( context.getRealPath( configFile ) );
97 final Configuration embeddorConf = kernelConf.getChild( "embeddor" );
98 final String embeddorClassname = embeddorConf.getAttribute( "class" );
99
100 m_embeddor = (SingleAppEmbeddor)Class.forName( embeddorClassname ).newInstance();
101
102 ContainerUtil.enableLogging( m_embeddor, createLogger( m_parameters ) );
103 ContainerUtil.parameterize( m_embeddor, m_parameters );
104 ContainerUtil.configure( m_embeddor, embeddorConf );
105 ContainerUtil.initialize( m_embeddor );
106
107 final Thread thread = new Thread ( this, "Phoenix-Monitor" );
108 thread.start();
109 }
110 catch( final Throwable throwable )
111 {
112 log( REZ.getString( "main.exception.header" ) );
113 log( "---------------------------------------------------------" );
114 log( ExceptionUtil.printStackTrace( throwable ) );
115 log( "---------------------------------------------------------" );
116 log( REZ.getString( "main.exception.footer" ) );
117 throw new ServletException ( throwable );
118 }
119
120 getServletContext().setAttribute( Embeddor.ROLE, m_embeddor );
121 }
122
123 public void run()
124 {
125 try
126 {
127 m_embeddor.execute();
128 }
129 catch( final Throwable throwable )
130 {
131 log( REZ.getString( "main.exception.header" ) );
132 log( "---------------------------------------------------------" );
133 log( ExceptionUtil.printStackTrace( throwable ) );
134 log( "---------------------------------------------------------" );
135 log( REZ.getString( "main.exception.footer" ) );
136
137 final String message = REZ.getString( "servlet.error.execute" );
138 throw new CascadingRuntimeException( message, throwable );
139 }
140 }
141
142 public void destroy()
143 {
144 getServletContext().removeAttribute( Embeddor.ROLE );
145
146 try
147 {
148 ContainerUtil.shutdown( m_embeddor );
149 }
150 catch( final Throwable throwable )
151 {
152 log( REZ.getString( "main.exception.header" ) );
153 log( "---------------------------------------------------------" );
154 log( ExceptionUtil.printStackTrace( throwable ) );
155 log( "---------------------------------------------------------" );
156 log( REZ.getString( "main.exception.footer" ) );
157 }
158 m_embeddor = null;
159 m_parameters = null;
160 }
161
162 private Logger createLogger( final Parameters parameters )
163 throws Exception
164 {
165 final String phoenixHome = parameters.getParameter( "phoenix.home" );
166 final String logDestination =
167 parameters.getParameter( "log-destination", phoenixHome + DEFAULT_LOG_FILE );
168 final String logPriority =
169 parameters.getParameter( "log-priority", "INFO" );
170 final AvalonFormatter formatter = new AvalonFormatter( DEFAULT_FORMAT );
171 final File file = new File ( logDestination );
172 final FileTarget logTarget = new FileTarget( file, false, formatter );
173
174 final Hierarchy hierarchy = new Hierarchy();
177 final org.apache.log.Logger logger = hierarchy.getLoggerFor( "Phoenix" );
178 logger.setLogTargets( new LogTarget[]{logTarget} );
179 logger.setPriority( Priority.getPriorityForName( logPriority ) );
180 logger.info( "Logger started" );
181 return new LogKitLogger( logger );
182 }
183 }
184 |
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