mqtt

Kubemq MQTT Target Connector

Kubemq mqtt target connector allows services using kubemq server to access mqtt messaging services.

Prerequisites

The following are required to run the mqtt target connector:

• kubemq cluster
• mqtt server
• kubemq-targets deployment

Configuration

MQTT target connector configuration properties:

Properties Key	Required	Description	Example
host	yes	mqtt connection host	"localhost:1883"
username	no	set mqtt username	"username"
password	no	set mqtt password	"password"
client_id	no	mqtt connection string address	"client_id"
default_topic	no	set MQTT default topic	"topic"
default_qos	no	set MQTT default qos	0

Example:

bindings:
  - name: kubemq-query-mqtt
    source:
      kind: kubemq.query
      name: kubemq-query
      properties:
        address: "kubemq-cluster:50000"
        client_id: "kubemq-query-mqtt-connector"
        auth_token: ""
        channel: "query.mqtt"
        group:   ""
        auto_reconnect: "true"
        reconnect_interval_seconds: "1"
        max_reconnects: "0"
    target:
      kind: messaging.mqtt
      name: target-mqtt
      properties:
        host: "localhost:1883"
        username: "username"
        password: "password"
        client_id: "client_id"
        default_topic: "topic"
        default_qos: 0

Usage

Request

Request metadata setting:

Metadata Key	Required	Description	Possible values
topic	yes	set topic name	"topic"
qos	yes	set qos level	"0","1","2"

Query request data setting:

Data Key	Required	Description	Possible values
data	yes	data to publish	base64 bytes array

Example:

{
  "metadata": {
    "topic": "topic",
    "qos": "0"
  },
  "data": "U0VMRUNUIGlkLHRpdGxlLGNvbnRlbnQgRlJPTSBwb3N0Ow=="
}