org.apache.http.impl.entity.EntitySerializer Maven / Gradle / Ivy
/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
*
* This entity serializer currently supports "chunked" and "identitiy"
* transfer-coding and content length delimited content.
*
* This class relies on a specific implementation of
* {@link ContentLengthStrategy} to determine the content length or transfer
* encoding of the entity.
*
* This class writes out the content of {@link HttpEntity} to the data stream
* using a transfer coding based on properties on the HTTP message.
*
* @since 4.0
*
* @deprecated (4.3) use {@link org.apache.http.impl.BHttpConnectionBase}
*/
@Immutable // assuming injected dependencies are immutable
@Deprecated
public class EntitySerializer {
private final ContentLengthStrategy lenStrategy;
public EntitySerializer(final ContentLengthStrategy lenStrategy) {
super();
this.lenStrategy = Args.notNull(lenStrategy, "Content length strategy");
}
/**
* Creates a transfer codec based on properties of the given HTTP message
* and returns {@link OutputStream} instance that transparently encodes
* output data as it is being written out to the output stream.
*
* This method is called by the public
* {@link #serialize(SessionOutputBuffer, HttpMessage, HttpEntity)}.
*
* @param outbuffer the session output buffer.
* @param message the HTTP message.
* @return output stream.
* @throws HttpException in case of HTTP protocol violation.
* @throws IOException in case of an I/O error.
*/
protected OutputStream doSerialize(
final SessionOutputBuffer outbuffer,
final HttpMessage message) throws HttpException, IOException {
final long len = this.lenStrategy.determineLength(message);
if (len == ContentLengthStrategy.CHUNKED) {
return new ChunkedOutputStream(outbuffer);
} else if (len == ContentLengthStrategy.IDENTITY) {
return new IdentityOutputStream(outbuffer);
} else {
return new ContentLengthOutputStream(outbuffer, len);
}
}
/**
* Writes out the content of the given HTTP entity to the session output
* buffer based on properties of the given HTTP message.
*
* @param outbuffer the output session buffer.
* @param message the HTTP message.
* @param entity the HTTP entity to be written out.
* @throws HttpException in case of HTTP protocol violation.
* @throws IOException in case of an I/O error.
*/
public void serialize(
final SessionOutputBuffer outbuffer,
final HttpMessage message,
final HttpEntity entity) throws HttpException, IOException {
Args.notNull(outbuffer, "Session output buffer");
Args.notNull(message, "HTTP message");
Args.notNull(entity, "HTTP entity");
final OutputStream outstream = doSerialize(outbuffer, message);
entity.writeTo(outstream);
outstream.close();
}
}