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

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

Output Attributes

See Also

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