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RabbitMQ

The RabbitMQ output in ArcGIS Velocity allows you to send messages to an externally accessible RabbitMQ broker. A message is sent to RabbitMQ to each output feature sent to the output.

Learn more about RabbitMQ

Example

The following is an example use case 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.

Usage note

Keep the following in mind when working with the output:

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 if 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