# HttpEmulatorProducerInitializer.java

    /*
     * Copyright (c) 2019, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
     *
     * WSO2 Inc. 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 org.apache.synapse.commons.emulator.http.producer;

    import io.netty.bootstrap.Bootstrap;
    import io.netty.channel.Channel;
    import io.netty.channel.EventLoopGroup;
    import io.netty.channel.nio.NioEventLoopGroup;
    import io.netty.channel.socket.nio.NioSocketChannel;
    import io.netty.handler.codec.http.HttpRequest;
    import io.netty.handler.ssl.SslContext;
    import io.netty.handler.ssl.SslContextBuilder;
    import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
    import org.apache.synapse.commons.emulator.core.EmulatorType;
    import org.apache.synapse.commons.emulator.http.ChannelPipelineInitializer;
    import org.apache.synapse.commons.emulator.http.dsl.HttpProducerContext;
    import org.apache.synapse.commons.emulator.http.dsl.dto.producer.IncomingMessage;
    import org.apache.synapse.commons.emulator.http.dsl.dto.producer.OutgoingMessage;

    import java.util.Map;

    public class HttpEmulatorProducerInitializer {

        private HttpProducerContext producerContext;
        private EventLoopGroup group;

        public HttpEmulatorProducerInitializer(HttpProducerContext producerContext) {
            this.producerContext = producerContext;
        }

        public void initialize() throws Exception {

            for (Map.Entry<IncomingMessage, OutgoingMessage> entry : producerContext.getInOutCorrelation()
                    .entrySet()) {
                sendMessage(entry.getKey(), entry.getValue());
            }
        }

        private void sendMessage(IncomingMessage incomingMessage, OutgoingMessage outgoingMessage) throws Exception {

            final boolean ssl = "https".equalsIgnoreCase(null);
            final SslContext sslCtx;
            if (ssl) {
                sslCtx = SslContextBuilder.forClient()
                        .trustManager(InsecureTrustManagerFactory.INSTANCE).build();
            } else {
                sslCtx = null;
            }
            HttpRequest httpRequest = new HttpRequestInformationProcessor().populateHttpRequest(producerContext,
                    incomingMessage);
            group = new NioEventLoopGroup();
            try {
                Bootstrap b = new Bootstrap();
                ChannelPipelineInitializer channelPipelineInitializer = new ChannelPipelineInitializer(sslCtx,
                        EmulatorType.HTTP_PRODUCER);
                channelPipelineInitializer.setProducerOutgoingMessage(outgoingMessage);
                b.group(group)
                        .channel(NioSocketChannel.class)
                        .handler(channelPipelineInitializer);

                Channel ch = b.connect(producerContext.getHost(), producerContext.getPort()).sync().channel();
                ch.writeAndFlush(httpRequest);

                ch.closeFuture().sync();
            } finally {
                group.shutdownGracefully();
            }

        }

        public void shutdown() {
            group.shutdownGracefully();
        }
    }