The Trigger entity schema contains the necessary information to describe the stream of events that it represents. For more information, see the document “Creating Triggers and Rules”.
The Trigger name (i.e., MUST be less than or equal to 256 characters.
The Trigger entity schema includes all general Entity Schema fields in addition to any fields declared above.
$ wsk package list <package name>
<triggerName>: <Entity schema> feed: <feed name> credential: <Credential> inputs: <list of parameter>
triggers: everyhour: feed: /whisk.system/alarms/alarm