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From rdon...@apache.org
Subject svn commit: r759856 - /james/protocols/imap/trunk/seda/src/main/java/org/apache/james/imap/main/ContextualLog.java
Date Mon, 30 Mar 2009 07:20:20 GMT
Author: rdonkin
Date: Mon Mar 30 07:20:19 2009
New Revision: 759856

URL: http://svn.apache.org/viewvc?rev=759856&view=rev
Log:
Added decorating Log implementation for use by assemblers IMAP-75 https://issues.apache.org/jira/browse/IMAP-75

Added:
    james/protocols/imap/trunk/seda/src/main/java/org/apache/james/imap/main/ContextualLog.java
  (with props)

Added: james/protocols/imap/trunk/seda/src/main/java/org/apache/james/imap/main/ContextualLog.java
URL: http://svn.apache.org/viewvc/james/protocols/imap/trunk/seda/src/main/java/org/apache/james/imap/main/ContextualLog.java?rev=759856&view=auto
==============================================================================
--- james/protocols/imap/trunk/seda/src/main/java/org/apache/james/imap/main/ContextualLog.java
(added)
+++ james/protocols/imap/trunk/seda/src/main/java/org/apache/james/imap/main/ContextualLog.java
Mon Mar 30 07:20:19 2009
@@ -0,0 +1,223 @@
+/****************************************************************
+ * 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.james.imap.main;
+
+import org.apache.commons.logging.Log;
+
+/**
+ * Decorates a log adding contextual information.
+ */
+public class ContextualLog implements Log {
+    
+    private final Object context;
+    private final Log decoratedLog;
+    
+    public ContextualLog(final Object context, final Log decoratedLog) {
+        super();
+        this.context = context;
+        this.decoratedLog = decoratedLog;
+    }
+
+    public void debug(Object message) {
+        if (isDebugEnabled()) {
+            if (context == null) {
+                decoratedLog.debug(message);
+            } else {
+                decoratedLog.debug(new Message(context, message));
+            }
+        }
+    }
+
+    public void debug(Object message, Throwable t) {
+        if (isDebugEnabled()) {
+            if (context == null) {
+                decoratedLog.debug(message, t);
+            } else {
+                decoratedLog.debug(new Message(context, message), t);
+            }
+        }
+    }
+
+    public void error(Object message) {
+        if (isErrorEnabled()) {
+            if (context == null) {
+                decoratedLog.error(message);
+            } else {
+                decoratedLog.error(new Message(context, message));
+            }
+        }
+    }
+
+    public void error(Object message, Throwable t) {
+        if (isErrorEnabled()) {
+            if (context == null) {
+                decoratedLog.error(message, t);
+            } else {
+                decoratedLog.error(new Message(context, message), t);
+            }
+        }
+    }
+
+    public void fatal(Object message) {
+        if (isFatalEnabled()) {
+            if (context == null) {
+                decoratedLog.fatal(message);
+            } else {
+                decoratedLog.fatal(new Message(context, message));
+            }
+        }
+    }
+
+    public void fatal(Object message, Throwable t) {
+        if (isFatalEnabled()) {
+            if (context == null) {
+                decoratedLog.fatal(message, t);
+            } else {
+                decoratedLog.fatal(new Message(context, message), t);
+            }
+        }
+    }
+
+    public void info(Object message) {
+        if (isInfoEnabled()) {
+            if (context == null) {
+                decoratedLog.info(message);
+            } else {
+                decoratedLog.info(new Message(context, message));
+            }
+        }
+    }
+
+    public void info(Object message, Throwable t) {
+        if (isInfoEnabled()) {
+            if (context == null) {
+                decoratedLog.info(message, t);
+            } else {
+                decoratedLog.info(new Message(context, message), t);
+            }
+        }
+    }
+
+    public boolean isDebugEnabled() {
+        return decoratedLog.isDebugEnabled();
+    }
+
+    public boolean isErrorEnabled() {
+        return decoratedLog.isErrorEnabled();
+    }
+
+    public boolean isFatalEnabled() {
+        return decoratedLog.isFatalEnabled();
+    }
+
+    public boolean isInfoEnabled() {
+        return decoratedLog.isInfoEnabled();
+    }
+
+    public boolean isTraceEnabled() {
+        return decoratedLog.isTraceEnabled();
+    }
+
+    public boolean isWarnEnabled() {
+        return decoratedLog.isWarnEnabled();
+    }
+
+    public void trace(Object message) {
+        if (isTraceEnabled()) {
+            if (context == null) {
+                decoratedLog.trace(message);
+            } else {
+                decoratedLog.trace(new Message(context, message));
+            }
+        }
+    }
+
+    public void trace(Object message, Throwable t) {
+        if (isTraceEnabled()) {
+            if (context == null) {
+                decoratedLog.trace(message, t);
+            } else {
+                decoratedLog.trace(new Message(context, message), t);
+            }
+        }
+    }
+
+    public void warn(Object message) {
+        if (isWarnEnabled()) {
+            if (context == null) {
+                decoratedLog.warn(message);
+            } else {
+                decoratedLog.warn(new Message(context, message));
+            }
+        }        
+    }
+
+    public void warn(Object message, Throwable t) {
+        if (isWarnEnabled()) {
+            if (context == null) {
+                decoratedLog.warn(message, t);
+            } else {
+                decoratedLog.warn(new Message(context, message), t);
+            }
+        }        
+    }
+
+    /**
+     * Renders this object suitably for logging.
+     * 
+     * @return a <code>String</code> representation 
+     * of this object.
+     */
+    public String toString()
+    {
+        final String result  = "ContextualLog ( "
+            + "context = " + this.context
+            + " )";
+    
+        return result;
+    }
+
+    /**
+     * Combines context with original message.
+     * For logging systems which support object rendering,
+     * a contextual logging aware renderer should be used.
+     */
+    public static final class Message {
+        private final Object context;
+        private final Object message;
+        
+        public Message(final Object context, final Object message) {
+            super();
+            this.context = context;
+            this.message = message;
+        }
+        
+        public Object getContext() {
+            return context;
+        }
+        
+        public Object getMessage() {
+            return message;
+        }
+        
+        public String toString() {
+            return context + " " + message;
+        }
+    }
+}

Propchange: james/protocols/imap/trunk/seda/src/main/java/org/apache/james/imap/main/ContextualLog.java
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    svn:eol-style = native



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