RabbitMQ

The RabbitMQ output in ArcGIS Velocity allows you to send messages to an externally accessible RabbitMQ broker. For real-time analytics, a message is sent to RabbitMQ for each output feature sent to the output. For big data analytics, after processing completes, all messages are sent to RabbitMQ, with one message for each record.

Learn more about RabbitMQ

Examples

The following are example use cases for the output:

• An analyst configures a real-time analytic to process and analyze events ingested by a feed and sends the resulting features to a RabbitMQ broker.
• After performing analysis in a big data analytic, a researcher wants to send the output spatial or tabular features to a RabbitMQ broker.

Usage notes

Keep the following in mind when working with the output:

• The RabbitMQ broker must be externally accessible on the internet.
• The following output data formats are supported:
  • GeoJSON
  • EsriJSON
  • Delimited
  • JSON
  • XML

Parameters

The following are the parameters for the output:

Parameter	Description	Data type
Host	The host name of the RabbitMQ broker.	String
Port	The port on which the RabbitMQ broker is available.	Integer
Use SSL	Specifies if SSL is used in the connection.	Boolean
Virtual host (optional)	The virtual host of the RabbitMQ broker.
Username (optional)	The username for the RabbitMQ broker. Note: This parameter is necessary if the RabbitMQ queue specified is secured.	String
Password (optional)	The password for the RabbitMQ broker. Note: This parameter is necessary if the RabbitMQ queue specified is secured.	Password
Exchange name (optional)	The exchange name the RabbitMQ output is connected to. The output can connect to either an exchange or a queue. If both are specified, the exchange is used.	String
Exchange type	Specifies the RabbitMQ AMQP exchange type. Choose one of the following options: None—No defined routing mechanism is selected so messages are not directed to any specific queue. Direct—Routes messages to queues that have a matching routing key. Fanout—Routes messages to all queues bound to the exchange, regardless of the routing keys. Topic—Routes messages to queues based on wildcard matches of routing keys.	String
Declare the exchange	Specifies if the exchange is declared. A declared exchange refers to creating and defining an exchange that routes messages to queues based on specific rules. Choose one of the following options: True—The exchange is declared. If the exchange already exists, choose the same exchange type and durability. False—The exchange is not declared; the exchange must already exist. The default is False.	Boolean
Exchange durability	Specifies if the exchange remains after a restart.	Boolean
Routing key (optional)	A comma-separated list of keys or topics used to bind a queue to the direct or topic exchange.	String
Queue name (optional)	Specifies the queue to which the RabbitMQ output is connected. The output can connect to either an exchange or a queue. If both are specified, the exchange is used.	String
Declare the queue	Specifies if the queue is declared. Choose one of the following options: True—The queue is declared. If the queue already exists, choose the same queue attributes. False—The queue is not declared; it must already exist. The default is False.	Boolean
Queue durability	Specifies if the queue remains after a restart.	Boolean
Queue auto-delete	Specifies if the server deletes the queue when no longer in use.	Boolean
Queue exclusive	Specifies if the queue is restricted to this connection.	Boolean
Output data format	The format for outgoing messages. The following are the supported output data formats: GeoJSON EsriJSON Delimited JSON XML	String
Write header row	Specifies whether the files write out the header row with field names. The default is false.	Boolean
Field delimiter	The field delimiter used by the file to separate fields. The default is comma (,).	String