Event Receiver

The event receiver listens for messages from an AMQP target and forwards them onto the internal event bus of Horizon. Messages are sent to a Camel processor, which can filter or transform these, before being sent onto the event bus.

The event receiver exposes the following properties via the org.opennms.features.amqp.eventreceiver pid:

Property Default Description

connectionUrl

amqp://localhost:5672

Used by the JmsConnectionFactory. See AMQP for details.

username

guest

Username

password

guest

Password

source

amqp:queue:opennms-events

Source queue or topic. See AMQP for details.

processorName

default-event-receiver-processor

Named org.apache.camel.Processor implementation used to filter and/or format the events.

The default processor, the default-event-receiver-processor, expects the message bodies to contain XML strings which it unmarshalls to events.

Setup

Start by logging into a Karaf shell.

Update the properties with your deployment-specific values:

config:edit org.opennms.features.amqp.eventreceiver
config:property-set connectionUrl amqp://localhost:5672
config:property-set source amqp:queue:opennms-events
config:property-set processorName default-event-receiver-processor
config:update

Install the feature:

feature:install opennms-amqp-event-receiver

Debugging

You can get detailed information on the Camel route using:

camel:route-info receiveEvent