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mqtt-to-kafka

# 构建镜像
docker build -t <image-tag> .

# 构建其他cpu架构的镜像
docker build \
-t <image-tag> \
--platform=linux/arm64 \
-o type=docker .


# 运行
docker run \
--name mqtt-to-kafka \
-e MQTT_CLIENT_ID="mqtt-client-01" \
-e MQTT_BROKER_HOST="mqtt.eclipseprojects.io" \
-e MQTT_BROKER_PORT=1883 \
-e MQTT_USER_NAME="admin" \
-e MQTT_PASSWORD="admin" \
-e BOOTSTRAP_SERVER="172.20.3.26:9094" \
-e TOPIC_MAPPING="$SYS/#:mqtt" \
<image-tag>
  1. 配置说明
  • MQTT_CLIENT_ID:客户端id,可不配置
  • MQTT_BROKER_HOST:mqtt broker的IP地址
  • MQTT_BROKER_PORT:mqtt broker的端口,默认1883
  • MQTT_USER_NAME/MQTT_PASSWORD:连接mqtt broker的用户名/密码,若不需要则不配置
  • BOOTSTRAP_SERVER:kafka的连接地址
  • TOPIC_MAPPING:mqtt topic和kafka topic的映射关系,将一个mqtt topic或一组mqtt topic(通配符的方式)的消息转发到kafka的topic,支持多组映射,格式:mqtt_topic1:kafka_topic1,mqtt_topic2:kafka_topic2...
  1. 发送到kafka的消息格式

发送到kafka的消息是json格式:

{
   "topic": "/sys/aaaa/bbbb/thing/event/property/post", // mqtt的topic全名
   "payload": "{...}", // 接受到的消息,可能也是一个json对象
   "report_time": "2024-07-21 12:01:44.727" // 数据接收时间戳(毫秒)
}

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