[1374] | 1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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| 2 | // |
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| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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| 4 | // you may not use this file except in compliance with the License. |
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| 5 | // You may obtain a copy of the License at |
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| 6 | // |
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| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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| 8 | // |
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| 9 | // Unless required by applicable law or agreed to in writing, software |
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| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 12 | // See the License for the specific language governing permissions and |
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| 13 | // limitations under the License. |
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| 14 | |
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| 15 | package de.ugoe.cs.autoquest.httpmonitor.proxy; |
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| 16 | |
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| 17 | import java.math.BigInteger; |
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| 18 | import java.nio.ByteBuffer; |
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| 19 | import java.util.Collection; |
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| 20 | import java.util.Enumeration; |
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| 21 | import java.util.LinkedList; |
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| 22 | import java.util.List; |
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| 23 | import java.util.logging.Level; |
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| 24 | |
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| 25 | import javax.servlet.http.HttpServletRequest; |
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| 26 | import javax.servlet.http.HttpServletResponse; |
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| 27 | |
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| 28 | import de.ugoe.cs.autoquest.httpmonitor.HttpMonitorExchangeHandler; |
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| 29 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Address; |
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| 30 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Content; |
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| 31 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Cookie; |
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| 32 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Cookies; |
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| 33 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Header; |
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| 34 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Headers; |
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| 35 | import de.ugoe.cs.autoquest.httpmonitor.exchange.HttpExchange; |
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| 36 | import de.ugoe.cs.autoquest.httpmonitor.exchange.HttpRequest; |
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| 37 | import de.ugoe.cs.autoquest.httpmonitor.exchange.HttpResponse; |
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| 38 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Method; |
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| 39 | import de.ugoe.cs.autoquest.httpmonitor.exchange.ObjectFactory; |
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| 40 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Protocol; |
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| 41 | import de.ugoe.cs.autoquest.httpmonitor.exchange.Status; |
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| 42 | import de.ugoe.cs.util.console.Console; |
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| 43 | |
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| 44 | /** |
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| 45 | * <p> |
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| 46 | * TODO comment |
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| 47 | * </p> |
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| 48 | * |
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| 49 | * @author Patrick Harms |
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| 50 | */ |
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| 51 | class ExchangeListener { |
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| 52 | |
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| 53 | /** |
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| 54 | * |
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| 55 | */ |
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| 56 | private HttpMonitorExchangeHandler exchangeHandler; |
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| 57 | |
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| 58 | /** |
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| 59 | * |
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| 60 | */ |
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| 61 | private HttpServletRequest request; |
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| 62 | |
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| 63 | /** |
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| 64 | * |
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| 65 | */ |
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| 66 | private List<ByteBuffer> requestData = new LinkedList<ByteBuffer>(); |
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| 67 | |
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| 68 | /** |
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| 69 | * |
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| 70 | */ |
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| 71 | private HttpServletResponse response; |
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| 72 | |
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| 73 | /** |
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| 74 | * |
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| 75 | */ |
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| 76 | private List<ByteBuffer> responseData = new LinkedList<ByteBuffer>(); |
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| 77 | |
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| 78 | /** |
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| 79 | * |
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| 80 | */ |
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| 81 | private long lastUpdate = System.currentTimeMillis(); |
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| 82 | |
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| 83 | /** |
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| 84 | * |
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| 85 | */ |
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| 86 | ExchangeListener(HttpMonitorExchangeHandler exchangeHandler) { |
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| 87 | this.exchangeHandler = exchangeHandler; |
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| 88 | } |
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| 89 | |
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| 90 | /** |
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| 91 | * |
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| 92 | */ |
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| 93 | public void onRequest(HttpServletRequest request) throws IllegalStateException { |
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| 94 | Console.traceln(Level.FINEST, this + ": onRequest " + request); |
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| 95 | |
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| 96 | if (request == null) { |
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| 97 | throw new IllegalArgumentException("request must not be null"); |
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| 98 | } |
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| 99 | |
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| 100 | lastUpdate = System.currentTimeMillis(); |
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| 101 | this.request = request; |
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| 102 | } |
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| 103 | |
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| 104 | /** |
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| 105 | * |
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| 106 | */ |
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| 107 | public void onRequestContent(ByteBuffer data) { |
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| 108 | Console.traceln(Level.FINEST, this + ": onRequestContent " + data); |
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| 109 | |
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| 110 | if (data == null) { |
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| 111 | throw new IllegalArgumentException("data must not be null"); |
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| 112 | } |
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| 113 | |
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| 114 | lastUpdate = System.currentTimeMillis(); |
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| 115 | requestData.add(data); |
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| 116 | } |
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| 117 | |
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| 118 | /** |
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| 119 | * |
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| 120 | */ |
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| 121 | public void onResponse(HttpServletResponse response) { |
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| 122 | Console.traceln(Level.FINEST, this + ": onResponse " + response); |
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| 123 | |
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| 124 | if (response == null) { |
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| 125 | throw new IllegalArgumentException("response must not be null"); |
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| 126 | } |
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| 127 | |
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| 128 | lastUpdate = System.currentTimeMillis(); |
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| 129 | this.response = response; |
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| 130 | } |
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| 131 | |
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| 132 | /** |
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| 133 | * |
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| 134 | */ |
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| 135 | public void onResponseContent(ByteBuffer data) { |
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| 136 | Console.traceln(Level.FINEST, this + ": onResponseContent " + data); |
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| 137 | |
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| 138 | if (data == null) { |
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| 139 | throw new IllegalArgumentException("data must not be null"); |
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| 140 | } |
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| 141 | |
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| 142 | lastUpdate = System.currentTimeMillis(); |
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| 143 | responseData.add(data); |
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| 144 | } |
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| 145 | |
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| 146 | /** |
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| 147 | * |
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| 148 | */ |
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| 149 | public void onFinish(Status status) { |
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| 150 | Console.traceln(Level.FINEST, this + ": onFinish " + status); |
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| 151 | |
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| 152 | if (status == null) { |
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| 153 | throw new IllegalArgumentException("status must not be null"); |
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| 154 | } |
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| 155 | |
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| 156 | lastUpdate = System.currentTimeMillis(); |
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| 157 | sendToExchangeHandler(status); |
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| 158 | } |
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| 159 | |
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| 160 | /** |
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| 161 | * @return the request |
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| 162 | */ |
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| 163 | HttpServletRequest getRequest() { |
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| 164 | return request; |
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| 165 | } |
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| 166 | |
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| 167 | /** |
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| 168 | * |
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| 169 | */ |
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| 170 | long getLastUpdate() { |
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| 171 | return lastUpdate; |
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| 172 | } |
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| 173 | |
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| 174 | /** |
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| 175 | * |
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| 176 | */ |
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| 177 | private void sendToExchangeHandler(Status status) { |
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| 178 | ObjectFactory eventObjectFactory = new ObjectFactory(); |
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| 179 | HttpExchange exchange = eventObjectFactory.createHttpExchange(); |
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| 180 | |
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| 181 | exchange.setStatus(status); |
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| 182 | |
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| 183 | // the remote address |
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| 184 | Address address = eventObjectFactory.createAddress(); |
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| 185 | address.setIp(request.getRemoteAddr()); |
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| 186 | address.setHost(request.getRemoteHost()); |
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| 187 | address.setPort(BigInteger.valueOf(request.getRemotePort())); |
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| 188 | exchange.setSender(address); |
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| 189 | |
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| 190 | // the local address |
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| 191 | address = eventObjectFactory.createAddress(); |
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| 192 | address.setIp(request.getLocalAddr()); |
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| 193 | address.setHost(request.getLocalName()); |
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| 194 | address.setPort(BigInteger.valueOf(request.getLocalPort())); |
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| 195 | exchange.setReceiver(address); |
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| 196 | |
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| 197 | exchange.setRequest(map(request, eventObjectFactory)); |
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| 198 | exchange.setResponse(map(response, eventObjectFactory)); |
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| 199 | |
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| 200 | exchangeHandler.handleHttpExchange(exchange); |
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| 201 | } |
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| 202 | |
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| 203 | /** |
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| 204 | * |
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| 205 | */ |
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| 206 | private HttpRequest map(HttpServletRequest request, ObjectFactory eventObjectFactory) { |
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| 207 | HttpRequest eventRequest = eventObjectFactory.createHttpRequest(); |
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| 208 | eventRequest.setMethod(Method.fromValue(request.getMethod())); |
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| 209 | eventRequest.setProtocol(Protocol.fromValue(request.getProtocol())); |
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| 210 | eventRequest.setUrl(request.getRequestURL().toString()); |
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| 211 | eventRequest.setQuery(request.getQueryString()); |
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| 212 | |
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| 213 | Headers headers = eventObjectFactory.createHeaders(); |
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| 214 | Enumeration<String> headerNames = request.getHeaderNames(); |
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| 215 | while (headerNames.hasMoreElements()) { |
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| 216 | String headerName = headerNames.nextElement(); |
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| 217 | |
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| 218 | Enumeration<String> headerValues = request.getHeaders(headerName); |
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| 219 | while (headerValues.hasMoreElements()) { |
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| 220 | Header header = eventObjectFactory.createHeader(); |
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| 221 | header.setKey(headerName); |
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| 222 | header.setValue(headerValues.nextElement()); |
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| 223 | headers.getHeader().add(header); |
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| 224 | } |
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| 225 | } |
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| 226 | eventRequest.setHeaders(headers); |
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| 227 | |
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| 228 | if (request.getCookies() != null) { |
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| 229 | Cookies cookies = eventObjectFactory.createCookies(); |
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| 230 | for (javax.servlet.http.Cookie requestCookie : request.getCookies()) { |
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| 231 | Cookie cookie = eventObjectFactory.createCookie(); |
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| 232 | cookie.setComment(requestCookie.getComment()); |
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| 233 | cookie.setDomain(requestCookie.getDomain()); |
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| 234 | cookie.setIsHttpOnly(requestCookie.isHttpOnly()); |
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| 235 | cookie.setIsSecure(requestCookie.getSecure()); |
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| 236 | cookie.setMaxAge(BigInteger.valueOf(requestCookie.getMaxAge())); |
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| 237 | cookie.setName(requestCookie.getName()); |
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| 238 | cookie.setPath(requestCookie.getPath()); |
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| 239 | cookie.setValue(requestCookie.getValue()); |
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| 240 | cookie.setVersion(BigInteger.valueOf(requestCookie.getVersion())); |
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| 241 | cookies.getCookie().add(cookie); |
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| 242 | } |
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| 243 | eventRequest.setCookies(cookies); |
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| 244 | } |
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| 245 | |
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| 246 | eventRequest.setAuthType(request.getAuthType()); |
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| 247 | eventRequest.setRemoteUser(request.getRemoteUser()); |
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| 248 | eventRequest.setRequestedSessionId(request.getRequestedSessionId()); |
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| 249 | |
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| 250 | if (requestData.size() > 0) { |
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| 251 | Content content = eventObjectFactory.createContent(); |
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| 252 | content.setEncoding(request.getCharacterEncoding()); |
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| 253 | content.setType(request.getContentType()); |
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| 254 | content.setLength(request.getContentLength()); |
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| 255 | content.setData(createString(requestData)); |
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| 256 | eventRequest.setContent(content); |
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| 257 | } |
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| 258 | |
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| 259 | return eventRequest; |
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| 260 | } |
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| 261 | |
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| 262 | /** |
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| 263 | * |
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| 264 | */ |
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| 265 | private HttpResponse map(HttpServletResponse response, ObjectFactory eventObjectFactory) { |
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| 266 | HttpResponse eventResponse = eventObjectFactory.createHttpResponse(); |
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| 267 | |
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| 268 | eventResponse.setStatus(BigInteger.valueOf(response.getStatus())); |
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| 269 | |
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| 270 | Headers headers = eventObjectFactory.createHeaders(); |
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| 271 | Collection<String> headerNames = response.getHeaderNames(); |
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| 272 | for (String headerName : headerNames) { |
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| 273 | Collection<String> headerValues = response.getHeaders(headerName); |
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| 274 | for (String headerValue : headerValues) { |
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| 275 | Header header = eventObjectFactory.createHeader(); |
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| 276 | header.setKey(headerName); |
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| 277 | header.setValue(headerValue); |
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| 278 | headers.getHeader().add(header); |
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| 279 | } |
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| 280 | } |
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| 281 | eventResponse.setHeaders(headers); |
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| 282 | |
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| 283 | if (responseData.size() > 0) { |
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| 284 | Content content = eventObjectFactory.createContent(); |
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| 285 | content.setEncoding(response.getCharacterEncoding()); |
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| 286 | content.setType(response.getContentType()); |
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| 287 | |
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| 288 | String data = createString(responseData); |
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| 289 | content.setLength(data.length()); |
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| 290 | content.setData(data); |
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| 291 | |
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| 292 | eventResponse.setContent(content); |
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| 293 | } |
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| 294 | |
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| 295 | return eventResponse; |
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| 296 | } |
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| 297 | |
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| 298 | /** |
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| 299 | * |
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| 300 | */ |
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| 301 | private String createString(List<ByteBuffer> bufferList) { |
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| 302 | StringBuffer str = new StringBuffer(); |
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| 303 | |
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| 304 | for (ByteBuffer buffer : bufferList) { |
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| 305 | while (buffer.hasRemaining()) { |
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| 306 | str.append((char) buffer.get()); |
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| 307 | } |
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| 308 | } |
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| 309 | |
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| 310 | return str.toString(); |
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| 311 | } |
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| 312 | |
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| 313 | } |
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