| /* |
| * 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 |
| * <p/> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p/> |
| * 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.knox.gateway.trace; |
| |
| import org.apache.knox.gateway.servlet.SynchronousServletInputStreamAdapter; |
| import org.apache.log4j.Logger; |
| |
| import javax.servlet.ServletInputStream; |
| import java.io.IOException; |
| import java.util.Locale; |
| |
| class TraceInput extends SynchronousServletInputStreamAdapter { |
| private static final Logger log = Logger.getLogger( TraceHandler.HTTP_REQUEST_LOGGER ); |
| private static final Logger bodyLog = Logger.getLogger( TraceHandler.HTTP_REQUEST_BODY_LOGGER ); |
| |
| private ServletInputStream delegate; |
| |
| private static final int BUFFER_LIMIT = 1024; |
| private StringBuilder buffer = new StringBuilder( BUFFER_LIMIT ); |
| |
| TraceInput( ServletInputStream delegate ) { |
| this.delegate = delegate; |
| } |
| |
| @Override |
| public int read() throws IOException { |
| int b = delegate.read(); |
| if( b >= 0 ) { |
| buffer.append( (char)b ); |
| if( buffer.length() == BUFFER_LIMIT || delegate.available() == 0 ) { |
| traceBody(); |
| } |
| } |
| return b; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| traceBody(); |
| delegate.close(); |
| } |
| |
| private synchronized void traceBody() { |
| if( buffer.length() > 0 ) { |
| String body = buffer.toString(); |
| buffer.setLength( 0 ); |
| StringBuilder sb = new StringBuilder(); |
| TraceUtil.appendCorrelationContext( sb ); |
| sb.append( String.format(Locale.ROOT, "|RequestBody[%d]%n\t%s", body.length(), body ) ); |
| if( bodyLog.isTraceEnabled() ) { |
| log.trace( sb.toString() ); |
| } |
| } |
| } |
| } |