package com.dji.sample.component.mqtt.handler;
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import com.dji.sample.common.util.SpringBeanUtils;
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import com.dji.sample.component.mqtt.model.ChannelName;
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import com.dji.sample.component.mqtt.model.DeviceTopicEnum;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.integration.annotation.Router;
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import org.springframework.integration.mqtt.support.MqttHeaders;
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import org.springframework.integration.router.AbstractMessageRouter;
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import org.springframework.messaging.Message;
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import org.springframework.messaging.MessageChannel;
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import org.springframework.messaging.MessageHeaders;
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import org.springframework.stereotype.Component;
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import java.util.Collection;
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import java.util.Collections;
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/**
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*
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* @author sean.zhou
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* @date 2021/11/10
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* @version 0.1
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*/
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@Component
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@Slf4j
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public class InboundMessageRouter extends AbstractMessageRouter {
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/**
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* All mqtt broker messages will arrive here before distributing them to different channels.
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* @param message message from mqtt broker
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* @return channel
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*/
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@Override
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@Router(inputChannel = ChannelName.INBOUND)
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protected Collection<MessageChannel> determineTargetChannels(Message<?> message) {
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MessageHeaders headers = message.getHeaders();
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String topic = headers.get(MqttHeaders.RECEIVED_TOPIC).toString();
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byte[] payload = (byte[])message.getPayload();
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log.debug("received topic :{} \t payload :{}", topic, new String(payload));
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DeviceTopicEnum topicEnum = DeviceTopicEnum.find(topic);
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MessageChannel bean = (MessageChannel) SpringBeanUtils.getBean(topicEnum.getBeanName());
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return Collections.singleton(bean);
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}
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}
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