# ServerConnectionDebug.java

    /**
     *  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.synapse.transport.nhttp.debug;

    import org.apache.http.HttpInetConnection;
    import org.apache.http.HttpRequest;
    import org.apache.http.RequestLine;
    import org.apache.http.nio.NHttpServerConnection;
    import org.apache.synapse.transport.nhttp.ServerHandler;

    import java.net.InetAddress;

    /**
     * A connection debug object would be accumulated during request processing, but only made use
     * of if the connection encounters issues during processing.
     */
    public class ServerConnectionDebug extends AbstractConnectionDebug {

        private long connectionCreationTime;
        private long requestStartTime;
        private long requestCompletionTime;
        private long responseStartTime;
        private long responseCompletionTime;

        private String remoteClientIP;
        private String requestURLPAth;
        private String requestHTTPMethod;
        private String requestHTTPProtocol;

        private ClientConnectionDebug clientConnectionDebug = null;

        public ServerConnectionDebug(NHttpServerConnection conn) {

            super();
            this.connectionCreationTime = (Long) conn.getContext().getAttribute(
                    ServerHandler.CONNECTION_CREATION_TIME);
            this.requestStartTime = System.currentTimeMillis();

            // assume an entity body is not present. If present this would be overwritten
            this.requestCompletionTime = System.currentTimeMillis();

            RequestLine reqLine = conn.getHttpRequest().getRequestLine();
            this.requestURLPAth = reqLine.getUri();
            this.requestHTTPMethod = reqLine.getMethod();
            this.requestHTTPProtocol = reqLine.getProtocolVersion().toString();

            if (conn instanceof HttpInetConnection) {
                HttpInetConnection inetConn = (HttpInetConnection) conn;
                InetAddress remoteAddr = inetConn.getRemoteAddress();
                if (remoteAddr != null) {
                    this.remoteClientIP = remoteAddr.getHostAddress();
                }
            }

            HttpRequest req = conn.getHttpRequest();
            this.headers = req.getAllHeaders();
        }

        public void recordResponseStartTime() {
            this.responseStartTime = System.currentTimeMillis();
        }

        public void recordRequestCompletionTime() {
            this.requestCompletionTime = System.currentTimeMillis();
        }

        public void recordResponseCompletionTime() {
            this.responseCompletionTime = System.currentTimeMillis();
        }

        public void setClientConnectionDebug(ClientConnectionDebug clientConnectionDebug) {
            this.clientConnectionDebug = clientConnectionDebug;
        }

        public ClientConnectionDebug getClientConnectionDebug() {
            return clientConnectionDebug;
        }

        public String dump() {
            StringBuffer sb = new StringBuffer(50);
            responseCompletionTime = responseCompletionTime == 0 ?
                    System.currentTimeMillis() : responseCompletionTime;
            long totalTime = responseCompletionTime - requestStartTime;

            sb.append("C2E-Req-StartTime").append(keyValueSeparator).append(format(requestStartTime));
            sb.append(fieldSeparator);
            sb.append("C2E-Req-EndTime").append(keyValueSeparator).append(format(requestCompletionTime));
            sb.append(fieldSeparator);
            sb.append("C2E-Req-ConnCreateTime").append(keyValueSeparator).append(format(connectionCreationTime));
            sb.append(statementSeparator);

            sb.append("C2E-Req-URL").append(keyValueSeparator).append(requestURLPAth);
            sb.append(fieldSeparator);
            sb.append("C2E-Req-Protocol").append(keyValueSeparator).append(requestHTTPProtocol);
            sb.append(fieldSeparator);
            sb.append("C2E-Req-Method").append(keyValueSeparator).append(requestHTTPMethod);
            sb.append(statementSeparator);

            sb.append("C2E-Req-IP").append(keyValueSeparator).append(remoteClientIP);
            if (!printNoHeaders) {
                sb.append(fieldSeparator);
                sb.append("C2E-Req-Info").append("{").append(headersToString()).append("}");
            }
            sb.append(statementSeparator);

            if (clientConnectionDebug != null) {
                sb.append(clientConnectionDebug.dump());
            }

            sb.append("E2C-Resp-Start").append(keyValueSeparator).append(format(responseStartTime));
            sb.append(fieldSeparator);
            sb.append("E2C-Resp-End").append(keyValueSeparator).append(format(responseCompletionTime));
            sb.append(statementSeparator);

            sb.append("Total-Time").append(keyValueSeparator).append(totalTime).append("ms");
            if (clientConnectionDebug != null) {
                long svcTime = clientConnectionDebug.getResponseCompletionTime()
                        - clientConnectionDebug.getLastRequestStartTime();
                svcTime = svcTime < 0 ? clientConnectionDebug.getResponseStartTime()
                        - clientConnectionDebug.getLastRequestStartTime() : svcTime;
                sb.append(fieldSeparator);
                sb.append("Svc-Time").append(keyValueSeparator).append(svcTime > 0 ?
                        Long.toString(svcTime) + "ms" : "UNDETERMINED");
                sb.append(fieldSeparator);
                sb.append("ESB-Time").append(keyValueSeparator).append(svcTime > 0 ?
                        Long.toString(totalTime - svcTime) + "ms" : "UNDETERMINED");
            }

            return sb.toString();
        }

    }