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Java example source code file (DefaultFullHttpResponse.java)

This example Java source code file (DefaultFullHttpResponse.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bytebuf, combinedhttpheaders, defaultfullhttpresponse, defaulthttpheaders, defaulthttpresponse, fullhttpresponse, httpheaders, httpresponsestatus, illegalreferencecountexception, override, stringbuilder

The DefaultFullHttpResponse.java Java example source code

/*
 * Copyright 2013 The Netty Project
 *
 * The Netty Project 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 io.netty.handler.codec.http;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.util.IllegalReferenceCountException;

import static io.netty.util.internal.ObjectUtil.checkNotNull;

/**
 * Default implementation of a {@link FullHttpResponse}.
 */
public class DefaultFullHttpResponse extends DefaultHttpResponse implements FullHttpResponse {

    private final ByteBuf content;
    private final HttpHeaders trailingHeaders;

    /**
     * Used to cache the value of the hash code and avoid {@link IllegalReferenceCountException}.
     */
    private int hash;

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status) {
        this(version, status, Unpooled.buffer(0));
    }

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, ByteBuf content) {
        this(version, status, content, true);
    }

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, boolean validateHeaders) {
        this(version, status, Unpooled.buffer(0), validateHeaders, false);
    }

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, boolean validateHeaders,
                                   boolean singleFieldHeaders) {
        this(version, status, Unpooled.buffer(0), validateHeaders, singleFieldHeaders);
    }

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status,
                                   ByteBuf content, boolean validateHeaders) {
        this(version, status, content, validateHeaders, false);
    }

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status,
                                   ByteBuf content, boolean validateHeaders, boolean singleFieldHeaders) {
        super(version, status, validateHeaders, singleFieldHeaders);
        this.content = checkNotNull(content, "content");
        this.trailingHeaders = singleFieldHeaders ? new CombinedHttpHeaders(validateHeaders)
                                                  : new DefaultHttpHeaders(validateHeaders);
    }

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status,
            ByteBuf content, HttpHeaders headers, HttpHeaders trailingHeaders) {
        super(version, status, headers);
        this.content = checkNotNull(content, "content");
        this.trailingHeaders = checkNotNull(trailingHeaders, "trailingHeaders");
    }

    @Override
    public HttpHeaders trailingHeaders() {
        return trailingHeaders;
    }

    @Override
    public ByteBuf content() {
        return content;
    }

    @Override
    public int refCnt() {
        return content.refCnt();
    }

    @Override
    public FullHttpResponse retain() {
        content.retain();
        return this;
    }

    @Override
    public FullHttpResponse retain(int increment) {
        content.retain(increment);
        return this;
    }

    @Override
    public FullHttpResponse touch() {
        content.touch();
        return this;
    }

    @Override
    public FullHttpResponse touch(Object hint) {
        content.touch(hint);
        return this;
    }

    @Override
    public boolean release() {
        return content.release();
    }

    @Override
    public boolean release(int decrement) {
        return content.release(decrement);
    }

    @Override
    public FullHttpResponse setProtocolVersion(HttpVersion version) {
        super.setProtocolVersion(version);
        return this;
    }

    @Override
    public FullHttpResponse setStatus(HttpResponseStatus status) {
        super.setStatus(status);
        return this;
    }

    @Override
    public FullHttpResponse copy() {
        return replace(content().copy());
    }

    @Override
    public FullHttpResponse duplicate() {
        return replace(content().duplicate());
    }

    @Override
    public FullHttpResponse retainedDuplicate() {
        return replace(content().retainedDuplicate());
    }

    @Override
    public FullHttpResponse replace(ByteBuf content) {
        return new DefaultFullHttpResponse(protocolVersion(), status(), content, headers(), trailingHeaders());
    }

    @Override
    public int hashCode() {
        int hash = this.hash;
        if (hash == 0) {
            if (content().refCnt() != 0) {
                try {
                    hash = 31 + content().hashCode();
                } catch (IllegalReferenceCountException ignored) {
                    // Handle race condition between checking refCnt() == 0 and using the object.
                    hash = 31;
                }
            } else {
                hash = 31;
            }
            hash = 31 * hash + trailingHeaders().hashCode();
            hash = 31 * hash + super.hashCode();
            this.hash = hash;
        }
        return hash;
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof DefaultFullHttpResponse)) {
            return false;
        }

        DefaultFullHttpResponse other = (DefaultFullHttpResponse) o;

        return super.equals(other) &&
               content().equals(other.content()) &&
               trailingHeaders().equals(other.trailingHeaders());
    }

    @Override
    public String toString() {
        return HttpMessageUtil.appendFullResponse(new StringBuilder(256), this).toString();
    }
}

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