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MQTT event receiver is an internal event receiver that comes with WSO2 products. You can configure it with XML, JSON, and text input mapping types.

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Code Block

language	xml

 <eventReceiver name="mqttEventReceiverMQTTInputEventAdapter" statistics="disable" trace="disable" xmlns="http://wso2.org/carbon/eventreceiver">
    <from eventAdapterType="mqtt">
        <property name="topic">sensordata</property>
        <property name="clientId">CEP-CONSUMER</property>
        <property name="url">tcp://localhost:1883</property>
        <property name="username">mqtt-user</property>
        <property name="password">mqtt-password</property>
        <property name="cleanSession">true</property>
    </from>
   ......................
</eventReceiver>

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Adapter Property	Description	Configuration file property	Example
Topic	A valid name for the MQTT broker topic which is used to receive messages on the MQTT input event adapter.	topic	MQTTInputEventAdapter
Broker Url	MQTT broker URL. You can use the same URL f or WSO2 MB (when offset is zero).	url	tcp://localhost:1883
Username	A valid username for the broker connection .	`username`	mqtt-user
Password	A valid password for the broker connection .	password	mqtt-password
Clean Session	Persist topic subscriptions and acknowledge positions across client sessions.	cleanSession	true/false
Client Id	Unique client ID used by the server to identify a client when it reconnects. Used for durable subscriptions or reliable delivery of messages.	clientId	clientid

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