FME Flow Topic

The FME Flow Topic trigger sends messages generated from FME Flow Notification Service Topics.

The FME Flow Topic trigger has two output ports. The success port (✔) can send a message if the trigger fails. The failure port (x) can send a message if the trigger succeeds.

Note Use the Topic trigger only to initiate a workflow, or a portion of a workflow. It is otherwise not necessary to explicitly define topics for a workflow to run.

Parameters

Note See also Working with Parameters in Automations Workflows.

Topics: Select the topic(s) you want to send messages.

Output Attributes

Accessing Topic Messages

FME Flow topics store incoming messages as JSON-formatted strings. If a topic message was generated as plain text, it is stored under the attribute subscriber_content. If a topic message was generated as JSON, it is stored under the applicable JSON attribute.

Other Attributes

Attribute	Description
time	Event time
source	Event type
error.type	(Failure port only) Error type: InvalidMessage: An error occurred while configuring this component, such as missing or malformed values. DeadLetter: An error occured while connecting to an external resource. Examples may include connection issues, invalid credentials, or generic external resource exceptions.
error.message	(Failure port only) Error message