| /* |
| * Copyright 1999,2004 The Apache Software Foundation. |
| * |
| * Licensed 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.catalina.cluster.tcp; |
| |
| |
| |
| |
| |
| import java.io.IOException; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpSession; |
| |
| import org.apache.catalina.cluster.CatalinaCluster; |
| import org.apache.catalina.cluster.ClusterManager; |
| import org.apache.catalina.cluster.ClusterMessage; |
| import org.apache.catalina.cluster.session.SessionMessage; |
| import org.apache.catalina.connector.Request; |
| import org.apache.catalina.connector.Response; |
| import org.apache.catalina.util.StringManager; |
| import org.apache.catalina.valves.Constants; |
| import org.apache.catalina.valves.ValveBase; |
| |
| /** |
| * <p>Implementation of a Valve that logs interesting contents from the |
| * specified Request (before processing) and the corresponding Response |
| * (after processing). It is especially useful in debugging problems |
| * related to headers and cookies.</p> |
| * |
| * <p>This Valve may be attached to any Container, depending on the granularity |
| * of the logging you wish to perform.</p> |
| * |
| * @author Craig R. McClanahan |
| * @version $Revision$ $Date$ |
| */ |
| |
| public class ReplicationValve |
| extends ValveBase { |
| private static org.apache.commons.logging.Log log = |
| org.apache.commons.logging.LogFactory.getLog( ReplicationValve.class ); |
| |
| // ----------------------------------------------------- Instance Variables |
| |
| |
| /** |
| * The descriptive information related to this implementation. |
| */ |
| private static final String info = |
| "org.apache.catalina.cluster.tcp.ReplicationValve/1.0"; |
| |
| |
| /** |
| * The StringManager for this package. |
| */ |
| protected static StringManager sm = |
| StringManager.getManager(Constants.Package); |
| |
| /** |
| * holds file endings to not call for like images and others |
| */ |
| protected java.util.regex.Pattern[] reqFilters = new java.util.regex.Pattern[0]; |
| |
| protected int debug = 0; |
| // ------------------------------------------------------------- Properties |
| |
| public ReplicationValve() { |
| } |
| /** |
| * Return descriptive information about this Valve implementation. |
| */ |
| public String getInfo() { |
| |
| return (info); |
| |
| } |
| |
| |
| // --------------------------------------------------------- Public Methods |
| protected static long totalRequestTime=0; |
| protected static long totalSendTime=0; |
| protected static long nrOfRequests =0; |
| protected static long lastSendTime =0; |
| |
| protected static synchronized void addClusterSendTime(long requestTime, long clusterTime) { |
| totalSendTime+=clusterTime; |
| totalRequestTime+=requestTime; |
| nrOfRequests++; |
| if ( (nrOfRequests % 100) == 0 ) { |
| log.info("Average request time="+(totalRequestTime/nrOfRequests)+" ms for "+ |
| "Cluster overhead time="+(totalSendTime/nrOfRequests)+" ms for "+ |
| nrOfRequests+" requests (Request="+totalRequestTime+"ms Cluster="+totalSendTime+"ms)."); |
| lastSendTime=System.currentTimeMillis(); |
| }//end if |
| } |
| |
| |
| /** |
| * Log the interesting request parameters, invoke the next Valve in the |
| * sequence, and log the interesting response parameters. |
| * |
| * @param request The servlet request to be processed |
| * @param response The servlet response to be created |
| * @param context The valve context used to invoke the next valve |
| * in the current processing pipeline |
| * |
| * @exception IOException if an input/output error occurs |
| * @exception ServletException if a servlet error occurs |
| */ |
| public void invoke(Request request, Response response) |
| throws IOException, ServletException |
| { |
| long totalstart = System.currentTimeMillis(); |
| //this happens before the request |
| //long _debugstart = System.currentTimeMillis(); |
| getNext().invoke(request, response); |
| //System.out.println("[DEBUG] Regular invoke took="+(System.currentTimeMillis()-_debugstart)+" ms."); |
| //this happens after the request |
| try |
| { |
| long start = System.currentTimeMillis(); |
| HttpSession session = request.getSession(false); |
| |
| if (!( request.getContext().getManager() instanceof ClusterManager) ) return; |
| |
| ClusterManager manager = (ClusterManager)request.getContext().getManager(); |
| CatalinaCluster cluster = (CatalinaCluster)getContainer().getCluster(); |
| if ( cluster == null ) { |
| log.warn("No cluster configured for this request."); |
| return; |
| } |
| //first check for session invalidations |
| String[] invalidIds=manager.getInvalidatedSessions(); |
| if ( invalidIds.length > 0 ) { |
| for ( int i=0;i<invalidIds.length; i++ ) { |
| try { |
| ClusterMessage imsg = manager.requestCompleted(invalidIds[i]); |
| if (imsg != null) |
| cluster.send(imsg); |
| }catch ( Exception x ) { |
| log.error("Unable to send session invalid message over cluster.",x); |
| } |
| } |
| } |
| |
| String id = null; |
| if ( session != null ) |
| id = session.getId(); |
| else |
| return; |
| |
| if ( id == null ) |
| return; |
| |
| if ( (request.getContext().getManager()==null) || |
| (!(request.getContext().getManager() instanceof ClusterManager))) |
| return; |
| |
| |
| |
| String uri = request.getDecodedRequestURI(); |
| boolean filterfound = false; |
| |
| for ( int i=0; (i<reqFilters.length) && (!filterfound); i++ ) |
| { |
| java.util.regex.Matcher matcher = reqFilters[i].matcher(uri); |
| filterfound = matcher.matches(); |
| }//for |
| if ( filterfound ) |
| return; |
| |
| log.debug("Invoking replication request on "+uri); |
| |
| |
| ClusterMessage msg = manager.requestCompleted(id); |
| |
| if ( msg == null ) return; |
| |
| cluster.send(msg); |
| long stop = System.currentTimeMillis(); |
| addClusterSendTime(stop-totalstart,stop-start); |
| |
| }catch (Exception x) |
| { |
| log.error("Unable to perform replication request.",x); |
| } |
| } |
| |
| |
| /** |
| * Return a String rendering of this object. |
| */ |
| public String toString() { |
| |
| StringBuffer sb = new StringBuffer("ReplicationValve["); |
| if (container != null) |
| sb.append(container.getName()); |
| sb.append("]"); |
| return (sb.toString()); |
| |
| } |
| |
| public void setFilter(String filter) |
| { |
| log.debug("Loading request filters="+filter); |
| java.util.StringTokenizer t = new java.util.StringTokenizer(filter,";"); |
| this.reqFilters = new java.util.regex.Pattern[t.countTokens()]; |
| int i = 0; |
| while ( t.hasMoreTokens() ) |
| { |
| String s = t.nextToken(); |
| log.debug("Request filter="+s); |
| try |
| { |
| reqFilters[i++] = java.util.regex.Pattern.compile(s); |
| }catch ( Exception x ) |
| { |
| log.error("Unable to compile filter "+s,x); |
| } |
| } |
| } |
| |
| public void setDebug(int debug) |
| { |
| this.debug = debug; |
| } |
| |
| // ------------------------------------------------------ Protected Methods |
| |
| |
| |
| } |