Coverage Report

Coverage Report - org.apache.myfaces.shared.trace.TracingSupport

Classes in this File

Line Coverage

Branch Coverage

Complexity

TracingSupport

0/49

0/18

2.231

 /*
  * 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.myfaces.shared.trace;
 
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
  * Support class for tracing method calls providing params, exceptions and return types
  */
 public class TracingSupport
 {
     private static final Object[] EMPTY_PARAMS = new Object[0];
 
     private Logger _logger;
     private Level _level = Level.FINE;
     private String _sourceClass;
 
     public TracingSupport()
     {
         this(Logger.getAnonymousLogger());
     }
 
     public TracingSupport(Class clazz)
     {
         this(clazz.getName());
     }
 
     public TracingSupport(String className)
     {
         this(Logger.getLogger(className));
     }
 
     public TracingSupport(Logger logger)
     {
         _logger = logger;
         _sourceClass = logger.getName();
     }
 
     /**
      * @return the log level
      */
     public Level getLevel()
     {
         return _level;
     }
 
     /**
      * 
      * @param level
      *            the log level to use
      */
     public void setLevel(Level level)
     {
         if (level == null)
         {
             throw new IllegalArgumentException("log level can not be null");
         }
         _level = level;
     }
 
     public <T> T trace(String methodName, Closure<T> closure)
     {
         return trace(methodName, closure, EMPTY_PARAMS);
     }
 
     public <T> T trace(String methodName, Closure<T> closure, Object... params)
     {
         if (_logger.isLoggable(_level))
         {
             _logger.logp(_level, _sourceClass, methodName, "ENTRY" + prepareParams(params), params);
             try
             {
                 T result = closure.call();
                 if (!Void.class.equals(result))
                 {
                     _logger.logp(_level, _sourceClass, methodName, "RETURN {0}", result);
                 }
                 else
                 {
                     _logger.logp(_level, _sourceClass, methodName, "RETURN");
                 }
                 return result;
             }
             catch (RuntimeException e)
             {
                 _logger.logp(_level, _sourceClass, methodName, "THROW", e);
                 throw e;
             }
         }
         else
         {
             return closure.call();
         }
     }
 
     private String prepareParams(Object[] params)
     {
         if (params == null || params.length == 0)
         {
             return "";
         }
         StringBuilder builder = new StringBuilder(" ");
         for (int i = 0, size = params.length; i < size; i++)
         {
             builder.append("{");
             builder.append(i);
             builder.append("}");
             if (i + 1 < size)
             {
                 builder.append(",");
             }
         }
         return builder.toString();
     }
 
     public Logger getLogger()
     {
         return _logger;
     }
 
     /**
      * @param logger
      *            the logger to set
      */
     public void setLogger(Logger logger)
     {
         if (logger == null)
         {
             throw new IllegalArgumentException("logger must not be null");
         }
         _logger = logger;
     }
 
     /**
      * @return the className
      */
     public String getSourceClass()
     {
         return _sourceClass;
     }
 
     /**
      * @param className
      *            the className to set
      */
     public void setSourceClass(String className)
     {
         if (className == null)
         {
             throw new IllegalArgumentException("className must not be null");
         }
         _sourceClass = className;
     }
 }

1		/*
2		* Licensed to the Apache Software Foundation (ASF) under one
3		* or more contributor license agreements. See the NOTICE file
4		* distributed with this work for additional information
5		* regarding copyright ownership. The ASF licenses this file
6		* to you under the Apache License, Version 2.0 (the
7		* "License"); you may not use this file except in compliance
8		* with the License. You may obtain a copy of the License at
9		*
10		* http://www.apache.org/licenses/LICENSE-2.0
11		*
12		* Unless required by applicable law or agreed to in writing,
13		* software distributed under the License is distributed on an
14		* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15		* KIND, either express or implied. See the License for the
16		* specific language governing permissions and limitations
17		* under the License.
18		*/
19		package org.apache.myfaces.shared.trace;
20
21		import java.util.logging.Level;
22		import java.util.logging.Logger;
23
24		/**
25		* Support class for tracing method calls providing params, exceptions and return types
26		*/
27		public class TracingSupport
28		{
29	0	private static final Object[] EMPTY_PARAMS = new Object[0];
30
31		private Logger _logger;
32	0	private Level _level = Level.FINE;
33		private String _sourceClass;
34
35		public TracingSupport()
36		{
37	0	this(Logger.getAnonymousLogger());
38	0	}
39
40		public TracingSupport(Class clazz)
41		{
42	0	this(clazz.getName());
43	0	}
44
45		public TracingSupport(String className)
46		{
47	0	this(Logger.getLogger(className));
48	0	}
49
50		public TracingSupport(Logger logger)
51	0	{
52	0	_logger = logger;
53	0	_sourceClass = logger.getName();
54	0	}
55
56		/**
57		* @return the log level
58		*/
59		public Level getLevel()
60		{
61	0	return _level;
62		}
63
64		/**
65		*
66		* @param level
67		* the log level to use
68		*/
69		public void setLevel(Level level)
70		{
71	0	if (level == null)
72		{
73	0	throw new IllegalArgumentException("log level can not be null");
74		}
75	0	_level = level;
76	0	}
77
78		public <T> T trace(String methodName, Closure<T> closure)
79		{
80	0	return trace(methodName, closure, EMPTY_PARAMS);
81		}
82
83		public <T> T trace(String methodName, Closure<T> closure, Object... params)
84		{
85	0	if (_logger.isLoggable(_level))
86		{
87	0	_logger.logp(_level, _sourceClass, methodName, "ENTRY" + prepareParams(params), params);
88		try
89		{
90	0	T result = closure.call();
91	0	if (!Void.class.equals(result))
92		{
93	0	_logger.logp(_level, _sourceClass, methodName, "RETURN {0}", result);
94		}
95		else
96		{
97	0	_logger.logp(_level, _sourceClass, methodName, "RETURN");
98		}
99	0	return result;
100		}
101	0	catch (RuntimeException e)
102		{
103	0	_logger.logp(_level, _sourceClass, methodName, "THROW", e);
104	0	throw e;
105		}
106		}
107		else
108		{
109	0	return closure.call();
110		}
111		}
112
113		private String prepareParams(Object[] params)
114		{
115	0	if (params == null \|\| params.length == 0)
116		{
117	0	return "";
118		}
119	0	StringBuilder builder = new StringBuilder(" ");
120	0	for (int i = 0, size = params.length; i < size; i++)
121		{
122	0	builder.append("{");
123	0	builder.append(i);
124	0	builder.append("}");
125	0	if (i + 1 < size)
126		{
127	0	builder.append(",");
128		}
129		}
130	0	return builder.toString();
131		}
132
133		public Logger getLogger()
134		{
135	0	return _logger;
136		}
137
138		/**
139		* @param logger
140		* the logger to set
141		*/
142		public void setLogger(Logger logger)
143		{
144	0	if (logger == null)
145		{
146	0	throw new IllegalArgumentException("logger must not be null");
147		}
148	0	_logger = logger;
149	0	}
150
151		/**
152		* @return the className
153		*/
154		public String getSourceClass()
155		{
156	0	return _sourceClass;
157		}
158
159		/**
160		* @param className
161		* the className to set
162		*/
163		public void setSourceClass(String className)
164		{
165	0	if (className == null)
166		{
167	0	throw new IllegalArgumentException("className must not be null");
168		}
169	0	_sourceClass = className;
170	0	}
171		}