com.generallycloud.baseio.codec.http11.ServerHTTPProtocolEncoder Maven / Gradle / Ivy

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/*
 * Copyright 2015-2017 GenerallyCloud.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.generallycloud.baseio.codec.http11;

import java.io.IOException;
import java.util.List;

import com.generallycloud.baseio.buffer.ByteBuf;
import com.generallycloud.baseio.buffer.ByteBufAllocator;
import com.generallycloud.baseio.codec.http11.future.Cookie;
import com.generallycloud.baseio.codec.http11.future.ServerHttpFuture;
import com.generallycloud.baseio.common.ReleaseUtil;
import com.generallycloud.baseio.component.ByteArrayBuffer;
import com.generallycloud.baseio.protocol.ChannelFuture;

public class ServerHTTPProtocolEncoder extends AbstractHttpProtocolEncoder {

	private static final byte[]	PROTOCOL		= "HTTP/1.1 ".getBytes();
	private static final byte[]	SERVER_CL	= "\r\nServer:baseio/0.0.1\r\nContent-Length:".getBytes();
	private static final byte[]	SET_COOKIE	= "Set-Cookie:".getBytes();

	@Override
	public void encode(ByteBufAllocator allocator, ChannelFuture readFuture) throws IOException {

		ServerHttpFuture f = (ServerHttpFuture) readFuture;
		
		f.setResponseHeader("Date", HttpHeaderDateFormat.getFormat().format(System.currentTimeMillis()));

		ByteArrayBuffer os = f.getBinaryBuffer();

		if (os != null) {
			encode(allocator, f, os.size(), os.array());
			return;
		}

		ByteArrayBuffer buffer = f.getWriteBuffer();

		if (buffer == null) {
			encode(allocator, f, 0, null);
			return;
		}

		encode(allocator, f, buffer.size(), buffer.array());
	}

	private void encode(ByteBufAllocator allocator, ServerHttpFuture f, int length, byte[] array)
			throws IOException {

		ByteBuf buf = allocator.allocate(256);

		try {
			
			buf.put(PROTOCOL);
			buf.put(f.getStatus().getHeaderBinary());
			buf.put(SERVER_CL);
			buf.put(String.valueOf(length).getBytes());
			buf.put(RN);

			writeHeaders(f, buf);
			
			List cookieList = f.getCookieList();

			if (cookieList != null) {
				for (Cookie c : cookieList) {
					writeBuf(buf, SET_COOKIE);
					writeBuf(buf, c.toString().getBytes());
					writeBuf(buf, RN);
				}
			}

			writeBuf(buf, RN);

			if (length != 0) {
				writeBuf(buf, array, 0, length);
			}
			
		} catch (Exception e) {
			ReleaseUtil.release(buf);
			throw e;
		}

		f.setByteBuf(buf.flip());
	}

}