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Subject: svn commit: r659481 -
 /cocoon/whiteboard/corona/trunk/corona-servlet/src/main/java/org/apache/cocoon/corona/servlet/DebugFilter.java
Date: Fri, 23 May 2008 09:02:44 -0000
To: cvs@cocoon.apache.org
From: reinhard@apache.org
Message-Id: <20080523090244.4DDF42388A0A@eris.apache.org>

Author: reinhard
Date: Fri May 23 02:02:43 2008
New Revision: 659481

URL: http://svn.apache.org/viewvc?rev=659481&view=rev
Log:
copy the debug filter to corona

Added:
    cocoon/whiteboard/corona/trunk/corona-servlet/src/main/java/org/apache/cocoon/corona/servlet/DebugFilter.java   (with props)

Added: cocoon/whiteboard/corona/trunk/corona-servlet/src/main/java/org/apache/cocoon/corona/servlet/DebugFilter.java
URL: http://svn.apache.org/viewvc/cocoon/whiteboard/corona/trunk/corona-servlet/src/main/java/org/apache/cocoon/corona/servlet/DebugFilter.java?rev=659481&view=auto
==============================================================================
--- cocoon/whiteboard/corona/trunk/corona-servlet/src/main/java/org/apache/cocoon/corona/servlet/DebugFilter.java (added)
+++ cocoon/whiteboard/corona/trunk/corona-servlet/src/main/java/org/apache/cocoon/corona/servlet/DebugFilter.java Fri May 23 02:02:43 2008
@@ -0,0 +1,167 @@
+/*
+ * 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.cocoon.corona.servlet;
+
+import java.io.IOException;
+import java.util.Enumeration;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * Servlet filter for printing request debug information into log file.
+ * 
+ * @version $Id$
+ */
+public class DebugFilter implements Filter {
+
+    private final Log logger = LogFactory.getLog(this.getClass());
+
+    final static protected String lineSeparator = "\n";
+
+    /** Active request count. */
+    private volatile int activeRequestCount;
+
+    /**
+     * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
+     */
+    public void init(FilterConfig config) throws ServletException {
+    }
+
+    /**
+     * @see javax.servlet.Filter#destroy()
+     */
+    public void destroy() {
+        // nothing to do here
+    }
+
+    /**
+     * Log debug information about the current environment.
+     * 
+     * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse,
+     *      javax.servlet.FilterChain)
+     */
+    public void doFilter(ServletRequest req, ServletResponse res, FilterChain filterChain) throws IOException,
+            ServletException {
+        // we don't do debug msgs if this is not a http servlet request
+        if (!(req instanceof HttpServletRequest)) {
+            filterChain.doFilter(req, res);
+            return;
+        }
+        try {
+            ++this.activeRequestCount;
+            final HttpServletRequest request = (HttpServletRequest) req;
+
+            if (this.logger.isDebugEnabled()) {
+                final StringBuffer msg = new StringBuffer();
+
+                msg.append("DEBUGGING INFORMATION:").append(lineSeparator);
+                msg.append("REQUEST: ").append(request.getRequestURI()).append(lineSeparator).append(lineSeparator);
+                msg.append("CONTEXT PATH: ").append(request.getContextPath()).append(lineSeparator);
+                msg.append("SERVLET PATH: ").append(request.getServletPath()).append(lineSeparator);
+                msg.append("PATH INFO: ").append(request.getPathInfo()).append(lineSeparator).append(lineSeparator);
+
+                msg.append("REMOTE HOST: ").append(request.getRemoteHost()).append(lineSeparator);
+                msg.append("REMOTE ADDRESS: ").append(request.getRemoteAddr()).append(lineSeparator);
+                msg.append("REMOTE USER: ").append(request.getRemoteUser()).append(lineSeparator);
+                msg.append("REQUEST SESSION ID: ").append(request.getRequestedSessionId()).append(lineSeparator);
+                msg.append("REQUEST PREFERRED LOCALE: ").append(request.getLocale().toString()).append(lineSeparator);
+                msg.append("SERVER HOST: ").append(request.getServerName()).append(lineSeparator);
+                msg.append("SERVER PORT: ").append(request.getServerPort()).append(lineSeparator).append(lineSeparator);
+
+                msg.append("METHOD: ").append(request.getMethod()).append(lineSeparator);
+                msg.append("CONTENT LENGTH: ").append(request.getContentLength()).append(lineSeparator);
+                msg.append("PROTOCOL: ").append(request.getProtocol()).append(lineSeparator);
+                msg.append("SCHEME: ").append(request.getScheme()).append(lineSeparator);
+                msg.append("AUTH TYPE: ").append(request.getAuthType()).append(lineSeparator).append(lineSeparator);
+                msg.append("CURRENT ACTIVE REQUESTS: ").append(this.activeRequestCount).append(lineSeparator);
+
+                // log all of the request parameters
+                final Enumeration e = request.getParameterNames();
+
+                msg.append("REQUEST PARAMETERS:").append(lineSeparator).append(lineSeparator);
+
+                while (e.hasMoreElements()) {
+                    String p = (String) e.nextElement();
+
+                    msg.append("PARAM: '").append(p).append("' ").append("VALUES: '");
+                    String[] params = request.getParameterValues(p);
+                    for (int i = 0; i < params.length; i++) {
+                        msg.append("[" + params[i] + "]");
+                        if (i != params.length - 1) {
+                            msg.append(", ");
+                        }
+                    }
+
+                    msg.append("'").append(lineSeparator);
+                }
+
+                // log all of the header parameters
+                final Enumeration e2 = request.getHeaderNames();
+
+                msg.append("HEADER PARAMETERS:").append(lineSeparator).append(lineSeparator);
+
+                while (e2.hasMoreElements()) {
+                    String p = (String) e2.nextElement();
+
+                    msg.append("PARAM: '").append(p).append("' ").append("VALUES: '");
+                    Enumeration e3 = request.getHeaders(p);
+                    while (e3.hasMoreElements()) {
+                        msg.append("[" + e3.nextElement() + "]");
+                        if (e3.hasMoreElements()) {
+                            msg.append(", ");
+                        }
+                    }
+
+                    msg.append("'").append(lineSeparator);
+                }
+
+                msg.append(lineSeparator).append("SESSION ATTRIBUTES:").append(lineSeparator).append(lineSeparator);
+
+                // log all of the session attributes
+                final HttpSession session = ((HttpServletRequest) req).getSession(false);
+                if (session != null) {
+                    // Fix bug #12139: Session can be modified while still
+                    // being enumerated here
+                    synchronized (session) {
+                        final Enumeration se = session.getAttributeNames();
+                        while (se.hasMoreElements()) {
+                            String p = (String) se.nextElement();
+                            msg.append("PARAM: '").append(p).append("' ").append("VALUE: '").append(
+                                    session.getAttribute(p)).append("'").append(lineSeparator);
+                        }
+                    }
+                }
+                this.logger.debug(msg.toString());
+            }
+
+            // Delegate
+            filterChain.doFilter(request, res);
+        } finally {
+            --this.activeRequestCount;
+        }
+    }
+}

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