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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package com.woorea.openstack.connector;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import java.util.logging.Logger;
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.api.client.filter.ClientFilter;
import com.sun.jersey.core.util.ReaderWriter;
/**
* A Jersey client filter that writes the request and response to a specified logger.
*/
public class JerseyLoggingFilter extends ClientFilter {
private final AtomicLong counter = new AtomicLong(0);
private final Logger logger;
/**
* Constructor
* @param logger the logger to which the request and response are written.
*/
public JerseyLoggingFilter(Logger logger) {
this.logger = logger;
}
@Override
public ClientResponse handle(ClientRequest request) throws ClientHandlerException {
long id = counter.incrementAndGet();
logRequest(id, request);
ClientResponse response = getNext().handle(request);
logResponse(id, response);
return response;
}
/**
* Logs a request.
* @param id the request id (counter)
* @param request the request
*/
private void logRequest(long id, ClientRequest request) {
StringBuilder builder = new StringBuilder();
builder.append(String.valueOf(id));
builder.append(" * Client out-bound request\n");
builder.append(String.valueOf(id));
builder.append(" > ");
builder.append(request.getMethod());
builder.append(" ");
builder.append(request.getURI().toASCIIString());
builder.append("\n");
// Request headers
for (Map.Entry<String, List<Object>> entry : request.getHeaders().entrySet()) {
String header = entry.getKey();
List<Object> values = entry.getValue();
if (values.size() == 1) {
builder.append(String.valueOf(id));
builder.append(" > ");
builder.append(header);
builder.append(": ");
builder.append(ClientRequest.getHeaderValue(values.get(0)));
builder.append("\n");
} else {
StringBuilder buf = new StringBuilder();
boolean first = true;
for(Object value : values) {
if (first) {
first = false;
} else {
buf.append(",");
}
buf.append(ClientRequest.getHeaderValue(value));
}
builder.append(String.valueOf(id));
builder.append(" > ");
builder.append(header);
builder.append(": ");
builder.append(buf.toString());
builder.append("\n");
}
}
// Request body
if (request.getEntity() != null) {
request.setAdapter(new JerseyLoggingAdapter(request.getAdapter(), builder));
} else {
logger.info(builder.toString());
}
}
/**
* Logs a response.
* @param id the request id (counter)
* @param response the response
*/
private void logResponse(long id, ClientResponse response) {
StringBuilder builder = new StringBuilder();
builder.append(String.valueOf(id));
builder.append(" * Client in-bound response\n");
builder.append(String.valueOf(id));
builder.append(" < ");
builder.append(String.valueOf(response.getStatus()));
builder.append("\n");
// Response headers
for (Map.Entry<String, List<String>> entry : response.getHeaders().entrySet()) {
String header = entry.getKey();
for (String value : entry.getValue()) {
builder.append(String.valueOf(id));
builder.append(" < ");
builder.append(header);
builder.append(": ");
builder.append(value).append("\n");
}
}
// Response body
ByteArrayOutputStream out = new ByteArrayOutputStream();
InputStream in = response.getEntityInputStream();
try {
ReaderWriter.writeTo(in, out);
byte[] requestEntity = out.toByteArray();
appendToBuffer(builder, requestEntity);
response.setEntityInputStream(new ByteArrayInputStream(requestEntity));
} catch (IOException ex) {
throw new ClientHandlerException(ex);
}
logger.info(builder.toString());
}
/**
* Appends bytes to the builder. If the bytes contain the password pattern,
* the password is obliterated.
* @param builder the builder
* @param bytes the bytes to append
*/
private void appendToBuffer(StringBuilder builder, byte[] bytes) {
if (bytes.length != 0) {
String s = new String(bytes);
builder.append(s.replaceAll("\"password\".*:.*\"(.*)\"", "\"password\" : \"******\""));
builder.append("\n");
}
}
private class JerseyLoggingAdapter extends AbstractClientRequestAdapter {
private final StringBuilder builder;
JerseyLoggingAdapter(ClientRequestAdapter adapter, StringBuilder builder) {
super(adapter);
this.builder = builder;
}
@Override
public OutputStream adapt(ClientRequest request, OutputStream out) throws IOException {
return new JerseyLoggingOutputStream(getAdapter().adapt(request, out), builder);
}
}
private class JerseyLoggingOutputStream extends OutputStream {
private final OutputStream stream;
private final StringBuilder builder;
private final ByteArrayOutputStream logStream = new ByteArrayOutputStream();
JerseyLoggingOutputStream(OutputStream stream, StringBuilder builder) {
this.stream = stream;
this.builder = builder;
}
@Override
public void write(int value) throws IOException {
logStream.write(value);
stream.write(value);
}
@Override
public void close() throws IOException {
appendToBuffer(builder, logStream.toByteArray());
logger.info(builder.toString());
stream.close();
}
}
}
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