com.difference.historybook.proxy.littleproxy.LittleProxyResponse.java Source code

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Here is the source code for com.difference.historybook.proxy.littleproxy.LittleProxyResponse.java

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/*
 * Copyright 2016 Andrew W. Buchanan (buchanan@difference.com)
 * 
 * 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.
 */

package com.difference.historybook.proxy.littleproxy;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import com.difference.historybook.proxy.ProxyResponse;

import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.http.FullHttpResponse;

/**
 * An implementation of @ProxyResponse that wraps a Netty response 
 */
public class LittleProxyResponse implements ProxyResponse {
    private final FullHttpResponse response;
    private Map<String, String> headers = null;

    /**
     * Constructor for LittleProxyResponse 
     * @param httpObject the Netty response to extract from
     */
    public LittleProxyResponse(FullHttpResponse httpObject) {
        this.response = httpObject;
    }

    @Override
    public int getStatus() {
        if (response == null || response.getStatus() == null)
            return -1;
        return response.getStatus().code();
    }

    @Override
    public Map<String, String> getHeaders() {
        if (headers == null) {
            headers = new HashMap<>();
            if (response != null && response.headers() != null) {
                for (Entry<String, String> entry : response.headers()) {
                    headers.put(entry.getKey(), entry.getValue());
                }
            }
        }

        return headers;
    }

    @Override
    public byte[] getContent() {
        ByteBuf buf = response.content();
        byte[] bytes;
        int length = buf.readableBytes();

        if (buf.hasArray()) {
            bytes = buf.array();
        } else {
            bytes = new byte[length];
            buf.getBytes(buf.readerIndex(), bytes);
        }
        buf.release();
        return bytes;
    }

}