Build the EMQ broker

1. clone emq-relx project

git clone https://github.com/emqtt/emq-relx.git

2. Add DEPS of the plugin in the Makefile

DEPS += emqx_kafka_bridge
dep_emqx_kafka_bridge = git https://github.com/playInfo/emqx_kafka_bridge.git release

3. Add load plugin in relx.config

{emqx_kafka_bridge, load},

4. Build

cd emq-relx && make

Configuration

You will have to edit the configurations of the bridge to set the kafka Ip address and port.

Edit the file emq-relx/deps/emqx_kafka_bridge/etc/emqx_kafka_bridge.config

 emqx.kafka.bridge.broker = 172.19.16.67:19092, 172.19.16.68:19092, 172.19.16.69:19092
 emqx.kafka.bridge.partition = 10
 emqx.kafka.bridge.client.flag = auto_start_producers:true, allow_topic_auto_creation:false, query_api_versions:false
 emqx.kafka.bridge.client.integer = reconnect_cool_down_seconds:10
 emqx.kafka.bridge.regex = ^(client|device|paas)/products/(\\S+)/devices/(\\S+)/(command)(/\\S+)*$
 emqx.kafka.bridge.topic = device:saas_device_downstream, client:saas_client_downstream, paas: paas_sqdata_upstream
 emqx.kafka.bridge.hook.client.connected.topic     = mqtt_client_connected
 emqx.kafka.bridge.hook.client.disconnected.topic  = mqtt_client_disconnected

Start the EMQ broker and load the plugin

1. cd emq-relx/_rel/emqx
2. ./bin/emqx start
3. ./bin/emqx_ctl plugins load emqx_kafka_bridge