/**
* 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.camel.component.netty4.http;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.nio.charset.Charset;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import org.apache.camel.Converter;
import org.apache.camel.Exchange;
import org.apache.camel.FallbackConverter;
import org.apache.camel.component.netty4.NettyConverter;
import org.apache.camel.spi.TypeConverterRegistry;
@Converter
public final class NettyHttpConverter {
private NettyHttpConverter() {
}
/**
* A fallback converter that allows us to easily call Java beans and use the raw Netty {@link HttpRequest} as parameter types.
*/
@FallbackConverter
public static Object convertToHttpRequest(Class<?> type, Exchange exchange, Object value, TypeConverterRegistry registry) {
// if we want to covert to HttpRequest
if (value != null && HttpRequest.class.isAssignableFrom(type)) {
// okay we may need to cheat a bit when we want to grab the HttpRequest as its stored on the NettyHttpMessage
// so if the message instance is a NettyHttpMessage and its body is the value, then we can grab the
// HttpRequest from the NettyHttpMessage
NettyHttpMessage msg;
if (exchange.hasOut()) {
msg = exchange.getOut(NettyHttpMessage.class);
} else {
msg = exchange.getIn(NettyHttpMessage.class);
}
if (msg != null && msg.getBody() == value) {
// ensure the http request content is reset so we can read all the content out-of-the-box
FullHttpRequest request = msg.getHttpRequest();
request.content().resetReaderIndex();
return request;
}
}
return null;
}
/**
* A fallback converter that allows us to easily call Java beans and use the raw Netty {@link HttpRequest} as parameter types.
*/
@FallbackConverter
public static Object convertToHttpResponse(Class<?> type, Exchange exchange, Object value, TypeConverterRegistry registry) {
// if we want to covert to convertToHttpResponse
if (value != null && HttpResponse.class.isAssignableFrom(type)) {
// okay we may need to cheat a bit when we want to grab the HttpRequest as its stored on the NettyHttpMessage
// so if the message instance is a NettyHttpMessage and its body is the value, then we can grab the
// HttpRequest from the NettyHttpMessage
NettyHttpMessage msg;
if (exchange.hasOut()) {
msg = exchange.getOut(NettyHttpMessage.class);
} else {
msg = exchange.getIn(NettyHttpMessage.class);
}
if (msg != null && msg.getBody() == value) {
return msg.getHttpResponse();
}
}
return null;
}
@Converter
public static String toString(FullHttpResponse response, Exchange exchange) {
String contentType = response.headers().get(Exchange.CONTENT_TYPE);
String charset = NettyHttpHelper.getCharsetFromContentType(contentType);
if (charset == null && exchange != null) {
charset = exchange.getProperty(Exchange.CHARSET_NAME, String.class);
}
if (charset != null) {
return response.content().toString(Charset.forName(charset));
} else {
return response.content().toString(Charset.defaultCharset());
}
}
@Converter
public static byte[] toBytes(FullHttpResponse response, Exchange exchange) {
return NettyConverter.toByteArray(response.content(), exchange);
}
@Converter
public static InputStream toInputStream(FullHttpResponse response, Exchange exchange) {
byte[] bytes = toBytes(response, exchange);
return new ByteArrayInputStream(bytes);
}
}