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/*
* 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.dubbo.rpc.protocol.rest.support;
import org.apache.dubbo.common.logger.Logger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.commons.io.IOUtils;
import javax.annotation.Priority;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;
import javax.ws.rs.client.ClientResponseContext;
import javax.ws.rs.client.ClientResponseFilter;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.ReaderInterceptor;
import javax.ws.rs.ext.ReaderInterceptorContext;
import javax.ws.rs.ext.WriterInterceptor;
import javax.ws.rs.ext.WriterInterceptorContext;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;
/**
* This logging filter is not highly optimized for now
*
*/
@Priority(Integer.MIN_VALUE)
public class LoggingFilter implements ContainerRequestFilter, ClientRequestFilter, ContainerResponseFilter, ClientResponseFilter, WriterInterceptor, ReaderInterceptor {
private static final Logger logger = LoggerFactory.getLogger(LoggingFilter.class);
@Override
public void filter(ClientRequestContext context) throws IOException {
logHttpHeaders(context.getStringHeaders());
}
@Override
public void filter(ClientRequestContext requestContext, ClientResponseContext responseContext) throws IOException {
logHttpHeaders(responseContext.getHeaders());
}
@Override
public void filter(ContainerRequestContext context) throws IOException {
logHttpHeaders(context.getHeaders());
}
@Override
public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) throws IOException {
logHttpHeaders(responseContext.getStringHeaders());
}
@Override
public Object aroundReadFrom(ReaderInterceptorContext context) throws IOException, WebApplicationException {
byte[] buffer = IOUtils.toByteArray(context.getInputStream());
logger.info("The contents of request body is: \n" + new String(buffer, StandardCharsets.UTF_8) + "\n");
context.setInputStream(new ByteArrayInputStream(buffer));
return context.proceed();
}
@Override
public void aroundWriteTo(WriterInterceptorContext context) throws IOException, WebApplicationException {
OutputStreamWrapper wrapper = new OutputStreamWrapper(context.getOutputStream());
context.setOutputStream(wrapper);
context.proceed();
logger.info("The contents of response body is: \n" + new String(wrapper.getBytes(), StandardCharsets.UTF_8) + "\n");
}
protected void logHttpHeaders(MultivaluedMap headers) {
StringBuilder msg = new StringBuilder("The HTTP headers are: \n");
for (Map.Entry> entry : headers.entrySet()) {
msg.append(entry.getKey()).append(": ");
for (int i = 0; i < entry.getValue().size(); i++) {
msg.append(entry.getValue().get(i));
if (i < entry.getValue().size() - 1) {
msg.append(", ");
}
}
msg.append('\n');
}
logger.info(msg.toString());
}
protected static class OutputStreamWrapper extends OutputStream {
private final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
private final OutputStream output;
private OutputStreamWrapper(OutputStream output) {
this.output = output;
}
@Override
public void write(int i) throws IOException {
buffer.write(i);
output.write(i);
}
@Override
public void write(byte[] b) throws IOException {
buffer.write(b);
output.write(b);
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
buffer.write(b, off, len);
output.write(b, off, len);
}
@Override
public void flush() throws IOException {
output.flush();
}
@Override
public void close() throws IOException {
output.close();
}
public byte[] getBytes() {
return buffer.toByteArray();
}
}
}