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/*
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2010 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* 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 https://jersey.dev.java.net/CDDL+GPL.html
* or jersey/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at jersey/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.jersey.api.client.filter;
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;
import com.sun.jersey.core.util.ReaderWriter;
import java.io.ByteArrayInputStream;
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;
/**
* 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 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.loggingStream = null;
this.logger = logger;
}
/**
* 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.loggingStream = loggingStream;
this.logger = null;
}
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()) {
String header = e.getKey();
for (Object value : e.getValue()) {
prefixId(b, id).append(REQUEST_PREFIX).append(header).append(": ").
append(ClientRequest.getHeaderValue(value)).append("\n");
}
}
prefixId(b, id).append(REQUEST_PREFIX).append("\n");
}
private void logResponse(long id, ClientResponse response) {
StringBuilder b = new StringBuilder();
printResponseLine(b, id, response);
printResponseHeaders(b, id, response.getHeaders());
ByteArrayOutputStream out = new ByteArrayOutputStream();
InputStream in = response.getEntityInputStream();
try {
ReaderWriter.writeTo(in, out);
byte[] requestEntity = out.toByteArray();
printEntity(b, requestEntity);
response.setEntityInputStream(new ByteArrayInputStream(requestEntity));
} catch (IOException ex) {
throw new ClientHandlerException(ex);
}
log(b);
}
private void printResponseLine(StringBuilder b, long id, ClientResponse response) {
prefixId(b, id).append(NOTIFICATION_PREFIX).
append("Client in-bound response").append("\n");
prefixId(b, id).append(RESPONSE_PREFIX).
append(Integer.toString(response.getStatus())).
append("\n");
}
private void printResponseHeaders(StringBuilder b, long id, MultivaluedMap headers) {
for (Map.Entry> e : headers.entrySet()) {
String header = e.getKey();
for (String value : e.getValue()) {
prefixId(b, id).append(RESPONSE_PREFIX).append(header).append(": ").
append(value).append("\n");
}
}
prefixId(b, id).append(RESPONSE_PREFIX).append("\n");
}
private void printEntity(StringBuilder b, byte[] entity) throws IOException {
if (entity.length == 0)
return;
b.append(new String(entity)).append("\n");
}
}
