001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.geronimo.jetty6.cluster; 018 019 import java.io.IOException; 020 021 import javax.servlet.ServletException; 022 import javax.servlet.http.HttpServletRequest; 023 import javax.servlet.http.HttpServletResponse; 024 025 import org.apache.geronimo.clustering.ClusteredInvocation; 026 import org.apache.geronimo.clustering.ClusteredInvocationException; 027 import org.apache.geronimo.jetty6.AbstractPreHandler; 028 import org.mortbay.jetty.HttpException; 029 030 /** 031 * @version $Rev$ $Date$ 032 */ 033 public abstract class AbstractClusteredPreHandler extends AbstractPreHandler { 034 035 public void handle(String target, HttpServletRequest request, HttpServletResponse response, int dispatch) 036 throws IOException, ServletException { 037 ClusteredInvocation invocation = newClusteredInvocation(target, request, response, dispatch); 038 try { 039 invocation.invoke(); 040 } catch (ClusteredInvocationException e) { 041 Throwable cause = e.getCause(); 042 if (cause instanceof HttpException) { 043 throw (HttpException) cause; 044 } else if (cause instanceof IOException) { 045 throw (IOException) cause; 046 } else { 047 throw (IOException) new IOException().initCause(cause); 048 } 049 } 050 } 051 052 protected abstract ClusteredInvocation newClusteredInvocation(String target, 053 HttpServletRequest request, HttpServletResponse response, int dispatch); 054 055 056 protected abstract class WebClusteredInvocation implements ClusteredInvocation { 057 protected final String target; 058 protected final HttpServletRequest request; 059 protected final HttpServletResponse response; 060 protected final int dispatch; 061 062 protected WebClusteredInvocation(String target, HttpServletRequest request, HttpServletResponse response, int dispatch) { 063 this.target = target; 064 this.request = request; 065 this.response = response; 066 this.dispatch = dispatch; 067 } 068 069 protected void invokeLocally() throws ClusteredInvocationException { 070 try { 071 next.handle(target, request, response, dispatch); 072 } catch (IOException e) { 073 throw new ClusteredInvocationException(e); 074 } catch (ServletException e) { 075 //WHAT DO I DO HERE??? 076 throw new ClusteredInvocationException(e); 077 } 078 } 079 080 public String getRequestedSessionId() { 081 return request.getRequestedSessionId(); 082 } 083 } 084 085 }