Trigger kinds

At the moment, we support the following kinds:

• scheduler - Time-based trigger that uses cron expressions to schedule task execution
• lifecycle - Event-based trigger that responds to entity state changes

For each different kind, the Trigger object has its own subclass with different spec and status attributes.

Scheduler Trigger

The scheduler trigger allows you to execute tasks on a schedule using cron expressions.

Required parameters:

• task - The task to execute
• schedule - Quartz cron expression
• One of:
• function - The function to execute
• workflow - The workflow to execute

Example:

trigger = dh.new_trigger(
    project="my-project",
    name="daily-run",
    kind="scheduler",
    task="my-task",
    function="my-function",
    schedule="0 0 * * *"  # Run daily at midnight
)

Lifecycle Trigger

The lifecycle trigger executes tasks in response to entity state changes.

Required parameters:

• task - The task to execute
• key - The entity key to monitor
• states - List of states to trigger on
• One of:
• function - The function to execute
• workflow - The workflow to execute

Example:

trigger = dh.new_trigger(
    project="my-project",
    name="model-complete",
    kind="lifecycle",
    task="my-task",
    function="my-function",
    key="store://project/model/kind/name",
    states=["completed"]
)

Please see the trigger entities documentation for more details on creating and managing triggers.