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ActiveMQ JMS input event adapter is receiver is an internal event adapter that receiver that comes with WSO2 products by default. You can configure it with XML, map, JSON, and text input mapping types.

Table of Contents

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Prerequisites

Follow the steps below to set up the prerequisites before starting the configuration.

Install Apache ActiveMQ JMS.
Info
This guide uses ActiveMQ versions 5.7.0 or below. If you want to use a later version, for instructions on the necessary changes to the configuration steps, go to Apache ActiveMQ Documentation.
Add the following ActiveMQ JMS-specific JAR files to <CEP_HOME>/repository/components/lib/ directory.
<ACTIVEMQ_HOME>/lib/activemq-core-xxx.jar

<ACTIVEMQ_HOME>/lib/geronimo-j2ee-management_1.1_spec-1.0.1.jar

Configure WSO2 CEP by adding relevant libraries to support JMS transport.
Start the ActiveMQ JMS server.

Creating an ActiveMQ JMS

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event

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You can create an ActiveMQ JMS input event adapter either using the management console or using a configuration file as explained below.

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receiver

For instructions on creating an ActiveMQ JMS input event adapter using the management console receiver, see Receiving Events Configuring Event Receivers.

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Configuring adapter properties

Specify the Adapter Properties, when creating an ActiveMQ JMS

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event receiver using the management console as shown below.

adapter properties of ActiveMQ JMS input event adapter

The above adapter properties are described below.

Adapter Property	Description	Example
Topic/Queue Name	A string of characters to denote a valid name of a JMS topic to subscribe to, or named queue to use when WSO2 CEP sends and receives messages.	`Test Topic`
JNDI Initial Context Factory Class	JNDI initial context factory class. The class must implement the `java.naming.spi.InitialContextFactory` interface.	`org.apache.activemq.jndi.ActiveMQInitialContextFactory`
JNDI Provider URL	URL of the JNDI provider.	`tcp://localhost:61616`
The JMS connection password	A valid password for the JMS connection.	*******
The JMS connection username	A valid username for the JMS connection.	`jms_user`
Connection Factory JNDI Name	The JNDI name of the connection factory.	`TopicConnectionFactory`
Destination Type	The sort order for messages that arrive on a specific destination.	`topic/queue`
Enable Durable Subscription	Whether the subscription is durable or not.	`true/false`
Durable Subscriber Name	A string of characters to denote a valid name of the durable subscriber. (It enables durable subscription if you add any value here).	`subscriber`
JMS Properties	Valid property and value pairs to denote Axis2 JMS properties (e.g. "property1: value1, property2: value2") For more information on JMS properties, go to Apache AXIS2 Transports Documentation.	`SessionTransacted:false`

Info
After entering the above adapter properties, select the Event Stream to which you want to map the incoming events, and the Message Format which you want to apply on the receiving events. Also, click Advanced to define custom input mappings based on the Message Format you selected. For more information on custom input mapping types, see

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For instructions on creating an ActiveMQ JMS input event adapter using a configuration file, see Receiving Events.

Note
Use the following configuration file to create an ActiveMQ JMS input event adapter. An event receiver implementation must start with `<eventReceiver>` as the root elementInput Mapping Types.

You can also define the respective adapter properties of the event receiver based on the transport type within the <from> element of the event receiver configuration in the <PRODUCT_HOME>/repository/deployment/server/eventreceivers/ directory as follows.

Code Block

language	xml

<eventReceiver name="ActiveMQJMSInputEventAdapter" statistics="disable"
    trace="disable" xmlns="http://wso2.org/carbon/eventreceiver">
    <from eventAdapterType="jms">
        <property name="java.naming.factory.initial">org.apache.activemq.jndi.ActiveMQInitialContextFactory</property>
        <property name="java.naming.provider.url">tcp://localhost:61616</property>
        <property name="transport.jms.DestinationTypeUserName">topic<>jms-user</property>
        <property encrypted="true" name="transport.jms.SubscriptionDurable">false<Password">P2ve4G8+qF7JXkiGnP9/Ew5GXALEWTu7znEwxZGYa/MQMaQBRfsXiP094fn9U+0rntdBMitXU9o7h5uV3m5h97Po8WTJRpnFBV5YCGZEO+ELSg6twY3386MipwFhFMrbUMKamI2sXksDRcogojWKtoHNmODnt8Ud1dh0LK5zqec=        </property>
        <property name="transport.jms.DestinationDestinationType">test_topic<>topic</property>
        <property name="transport.jms.ConnectionFactoryJNDINameSubscriptionDurable">TopicConnectionFactory<>false</property>
    </from>    <property name="transport.jms.DurableSubscriberName">subscriber</property>
        <mapping<property customMappingname="disable" type="xml"/>jms.properties">SessionTransacted:false</property>
        <property name="transport.jms.Destination">test_topic</property>
      <to streamName="Test Stream" version <property name="1transport.0jms.0"/>ConnectionFactoryJNDIName">TopicConnectionFactory</property>
    </from>
    ......................
</eventReceiver>

The above adapter properties of the above configuration are described below.

propertyjava.naming.factory.initial a JMS topic to subscribe to, or named queue to use when WSO2 CEP sends and receives messages.Name if the event stream to which the receiver is mapped.

Adapter
Property	Description
name	Name of the ActiveMQ JMS input event adapter
statistics	Whether monitoring event statistics is enabled for the receiver
trace	Whether tracing events is enabled for the receiver
xmlns	XML namespace for event receivers
eventAdapterType	Type of the event adapter.
Configuration file property	Example
Topic/Queue Name	A string of characters to denote a valid name of a JMS topic to subscribe to, or named queue to use when WSO2 CEP/DAS sends and receives messages.	transport.jms.Destination	Test Topic
JNDI Initial Context Factory Class	JNDI initial context factory class. The class must implement the `java.naming.spi.InitialContextFactory` interface.	java.naming.provider.url.factory.initial	org.apache.activemq.jndi.ActiveMQInitialContextFactory
JNDI Provider URL	URL of the JNDI provider.	java.naming.provider.url	tcp://localhost:61616
The JMS connection password	A valid password for the JMS connection.	transport.jms.Password	jms-password
The JMS connection username	A valid username for the JMS connection.	transport.jms.UserName	jms-user
Connection Factory JNDI Name	The JNDI name of the connection factory.	transport.jms.DestinationTypeConnectionFactoryJNDIName	TopicConnectionFactory
Destination Type	The sort order for messages that arrive on a specific destination.	transport.jms.SubscriptionDurableDestinationType	topic/queue
Enable Durable Subscription	Whether the subscription is durable or not.	transport.jms.DestinationSubscriptionDurable	true/false
Durable Subscriber Name	A string of characters to denote a valid name of
transport.jms.ConnectionFactoryJNDIName	The JNDI name of the connection factory.
customMapping	Whether a custom mapping is enabled on the receiver.
type	Type of the enabled custom mapping.
streamName	the durable subscriber. (It enables durable subscription if you add any value here).	transport.jms.DurableSubscriberName	subscriber
JMS Properties	Valid property and value pairs to denote Axis2 JMS properties (e.g. "property1: value1, property2: value2") For more information on Axis2 JMS properties, go to Apache AXIS2 Transports Documentation.	jms.properties	SessionTransacted:false

Related samples

For more information on ActiveMQ event receiver type, see the following samples.

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