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*
* Copyright (c) 2010-2013 Oracle and/or its affiliates. All rights reserved.
*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
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* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
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*
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package com.sun.jersey.api.client.filter;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;
import javax.ws.rs.core.MultivaluedMap;
import com.sun.jersey.api.client.AbstractClientRequestAdapter;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.ClientRequest;
import com.sun.jersey.api.client.ClientRequestAdapter;
import com.sun.jersey.api.client.ClientResponse;
/**
* A logging filter.
*
* @author [email protected]
*/
public class LoggingFilter extends ClientFilter {
private static final Logger LOGGER = Logger.getLogger(LoggingFilter.class.getName());
private static final String NOTIFICATION_PREFIX = "* ";
private static final String REQUEST_PREFIX = "> ";
private static final String RESPONSE_PREFIX = "< ";
private final class Adapter extends AbstractClientRequestAdapter {
private final StringBuilder b;
Adapter(ClientRequestAdapter cra, StringBuilder b) {
super(cra);
this.b = b;
}
public OutputStream adapt(ClientRequest request, OutputStream out) throws IOException {
return new LoggingOutputStream(getAdapter().adapt(request, out), b);
}
}
private final class LoggingOutputStream extends OutputStream {
private final OutputStream out;
private final ByteArrayOutputStream baos = new ByteArrayOutputStream();
private final StringBuilder b;
LoggingOutputStream(OutputStream out, StringBuilder b) {
this.out = out;
this.b = b;
}
@Override
public void write(byte[] b) throws IOException {
baos.write(b);
out.write(b);
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
baos.write(b, off, len);
out.write(b, off, len);
}
@Override
public void write(int b) throws IOException {
baos.write(b);
out.write(b);
}
@Override
public void close() throws IOException {
printEntity(b, baos.toByteArray());
log(b);
out.close();
}
}
private final PrintStream loggingStream;
private final Logger logger;
private final int maxEntitySize;
private long _id = 0;
/**
* Create a logging filter logging the request and response to
* a default JDK logger, named as the fully qualified class name of this
* class.
*/
public LoggingFilter() {
this(LOGGER);
}
/**
* Create a logging filter logging the request and response to
* a JDK logger.
*
* @param logger the logger to log requests and responses.
*/
public LoggingFilter(Logger logger) {
this(logger, null);
}
/**
* Create a logging filter logging the request and response to
* print stream.
*
* @param loggingStream the print stream to log requests and responses.
*/
public LoggingFilter(PrintStream loggingStream) {
this(null, loggingStream);
}
/**
* Create a logging filter logging the request and response to
* a JDK logger.
*
* @param logger the logger to log requests and responses.
* @param maxEntitySize maximum number of entity bytes to be logged (and buffered) - if the entity is larger,
* logging filter will print (and buffer in memory) only the specified number of bytes
* and print "...more..." string at the end.
*/
public LoggingFilter(Logger logger, int maxEntitySize) {
this(logger, null, maxEntitySize);
}
/**
* Create a logging filter logging the request and response to
* print stream.
*
* @param loggingStream the print stream to log requests and responses.
* @param maxEntitySize maximum number of entity bytes to be logged (and buffered) - if the entity is larger,
* logging filter will print (and buffer in memory) only the specified number of bytes
* and print "...more..." string at the end.
*/
public LoggingFilter(PrintStream loggingStream, int maxEntitySize) {
this(null, loggingStream, maxEntitySize);
}
private LoggingFilter(Logger logger, PrintStream loggingStream) {
this(logger, loggingStream, 10 * 1024);
}
private LoggingFilter(Logger logger, PrintStream loggingStream, int maxEntitySize) {
this.loggingStream = loggingStream;
this.logger = logger;
this.maxEntitySize = maxEntitySize;
}
private void log(StringBuilder b) {
if (logger != null) {
logger.info(b.toString());
} else {
loggingStream.print(b);
}
}
private StringBuilder prefixId(StringBuilder b, long id) {
b.append(Long.toString(id)).append(" ");
return b;
}
@Override
public ClientResponse handle(ClientRequest request) throws ClientHandlerException {
long id = ++this._id;
logRequest(id, request);
ClientResponse response = getNext().handle(request);
logResponse(id, response);
return response;
}
private void logRequest(long id, ClientRequest request) {
StringBuilder b = new StringBuilder();
printRequestLine(b, id, request);
printRequestHeaders(b, id, request.getHeaders());
if (request.getEntity() != null) {
request.setAdapter(new Adapter(request.getAdapter(), b));
} else {
log(b);
}
}
private void printRequestLine(StringBuilder b, long id, ClientRequest request) {
prefixId(b, id).append(NOTIFICATION_PREFIX).append("Client out-bound request").append("\n");
prefixId(b, id).append(REQUEST_PREFIX).append(request.getMethod()).append(" ").
append(request.getURI().toASCIIString()).append("\n");
}
private void printRequestHeaders(StringBuilder b, long id, MultivaluedMap headers) {
for (Map.Entry> e : headers.entrySet()) {
List