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/*
 * Copyright 2014 Netflix, Inc.
 *
 * 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 io.reactivex.netty.protocol.http.sse;

import io.netty.channel.ChannelPipeline;
import io.reactivex.netty.pipeline.PipelineConfigurator;
import io.reactivex.netty.protocol.http.client.HttpClientPipelineConfigurator;
import io.reactivex.netty.protocol.http.client.HttpClientRequest;
import io.reactivex.netty.protocol.http.client.HttpClientResponse;
import io.reactivex.netty.protocol.text.sse.SSEClientPipelineConfigurator;
import io.reactivex.netty.protocol.text.sse.ServerSentEvent;
import io.reactivex.netty.protocol.text.sse.ServerSentEventDecoder;

/**
 * An extension to {@link SSEClientPipelineConfigurator} that enables SSE over HTTP. 
* * @see SSEInboundHandler * @see ServerSentEventDecoder * * @author Nitesh Kant */ public class SseOverHttpClientPipelineConfigurator implements PipelineConfigurator, HttpClientRequest> { private final HttpClientPipelineConfigurator httpClientPipelineConfigurator; public SseOverHttpClientPipelineConfigurator() { this(new HttpClientPipelineConfigurator()); } public SseOverHttpClientPipelineConfigurator(HttpClientPipelineConfigurator httpClientPipelineConfigurator) { this.httpClientPipelineConfigurator = httpClientPipelineConfigurator; } @Override public void configureNewPipeline(ChannelPipeline pipeline) { httpClientPipelineConfigurator.configureNewPipeline(pipeline); if (null != pipeline.get(HttpClientPipelineConfigurator.REQUEST_RESPONSE_CONVERTER_HANDLER_NAME)) { pipeline.addBefore(HttpClientPipelineConfigurator.REQUEST_RESPONSE_CONVERTER_HANDLER_NAME, SSEInboundHandler.NAME, SSEClientPipelineConfigurator.SSE_INBOUND_HANDLER); } else { // Assuming that the underlying HTTP configurator knows what its doing. It will mostly fail though. pipeline.addLast(SSEInboundHandler.NAME, SSEClientPipelineConfigurator.SSE_INBOUND_HANDLER); } } }