| /* |
| * 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.utils.logging; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.http.HttpException; |
| import org.apache.http.HttpResponse; |
| import org.apache.http.nio.ContentDecoder; |
| import org.apache.http.nio.ContentEncoder; |
| import org.apache.http.nio.NHttpClientConnection; |
| import org.apache.http.nio.NHttpClientEventHandler; |
| |
| import java.io.IOException; |
| |
| /** |
| * A decorator (wrapper) for NHttpClientEventHandler instances. This decorator |
| * logs additional debug information regarding each of the events triggered on the |
| * actual NHttpClientEventHandler instance. Most events are logged 'before' they are |
| * dispatched to the wrapped NHttpClientEventHandler, but this implementation does |
| * not modify the event arguments by any means. In that sense this decorator is |
| * read-only and safe. This implementation does not log the exception event. It is |
| * expected that the actual NHttpClientEventHandler will take the necessary steps to |
| * log exceptions. |
| */ |
| public class LoggingClientEventHandler implements NHttpClientEventHandler { |
| |
| private final Log log; |
| |
| private final NHttpClientEventHandler handler; |
| |
| /** |
| * Create a new instance of the decorator. |
| * |
| * @param handler The instance of NHttpClientEventHandler to be decorated (wrapped) |
| */ |
| public LoggingClientEventHandler(final NHttpClientEventHandler handler) { |
| if (handler == null) { |
| throw new IllegalArgumentException("HTTP client handler must not be null"); |
| } |
| this.handler = handler; |
| this.log = LogFactory.getLog(handler.getClass()); |
| } |
| |
| public void connected(final NHttpClientConnection conn, final Object attachment) throws IOException, HttpException { |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Connected (" + attachment + ")"); |
| } |
| this.handler.connected(conn, attachment); |
| } |
| |
| public void closed(final NHttpClientConnection conn) { |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Closed"); |
| } |
| this.handler.closed(conn); |
| } |
| |
| public void endOfInput(NHttpClientConnection conn) throws IOException { |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Closed at remote end"); |
| } |
| this.handler.endOfInput(conn); |
| } |
| |
| public void exception(NHttpClientConnection conn, Exception ex) { |
| // Do not log errors at this level - Actual handler implementation should do that |
| this.handler.exception(conn, ex); |
| } |
| |
| public void requestReady(final NHttpClientConnection conn) throws IOException, HttpException { |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": InRequest ready"); |
| } |
| this.handler.requestReady(conn); |
| } |
| |
| public void outputReady(final NHttpClientConnection conn, final ContentEncoder encoder) throws IOException, HttpException { |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Output ready"); |
| } |
| this.handler.outputReady(conn, encoder); |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Content encoder " + encoder); |
| } |
| } |
| |
| public void responseReceived(final NHttpClientConnection conn) throws IOException, HttpException { |
| HttpResponse response = conn.getHttpResponse(); |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + " : " + response.getStatusLine()); |
| } |
| this.handler.responseReceived(conn); |
| } |
| |
| public void inputReady(final NHttpClientConnection conn, final ContentDecoder decoder) throws IOException, HttpException { |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Input ready"); |
| } |
| this.handler.inputReady(conn, decoder); |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Content decoder " + decoder); |
| } |
| } |
| |
| public void timeout(final NHttpClientConnection conn) throws IOException, HttpException { |
| if (this.log.isDebugEnabled()) { |
| this.log.debug("HTTP connection " + conn + ": Timeout"); |
| } |
| this.handler.timeout(conn); |
| } |
| } |