Interval Trigger
We will walk through the process of creating an automation using an Interval
trigger type on Latch that will run an automation workflow hourly. We assume that you understand how to write and register Workflows on Latch.
Terms:
- Automation Workflow: workflow which will be called by automation. This is the workflow we create in step 1 of this tutorial.
1: Create the Automation Workflow
Below is a simple workflow example which creates folder output
with a file locally and pushes it to Latch Data.
-
Initialize a new workflow using
latch init automation-wf
. -
Replace
__init__.py
andtask.py
with the following sample code.# __init__.py from wf.task import task from latch.resources.workflow import workflow from latch.types.directory import LatchDir, LatchOutputDir from latch.types.file import LatchFile from latch.types.metadata import LatchAuthor, LatchMetadata, LatchParameter metadata = LatchMetadata( display_name="Interval Automation Workflow", author=LatchAuthor( name="Your Name", ), # Note: parameters have to be empty for this workflow to be successfully run by the automation parameters={}, ) @workflow(metadata) def workflow() -> None: task()
# task.py import os from urllib.parse import urljoin from latch import message from latch.resources.tasks import small_task from latch.types.directory import LatchDir, LatchFile, LatchOutputDir @small_task def task() -> LatchDir: os.mkdir("output") with open("output/hello_world.txt", 'w') as file: file.write("Hello World!") return LatchDir("output", "LDATA PATH FOR THE DIRECTORY")
-
Register the sample target workflow with Latch using
$ latch register --yes automation-wf
- Test the workflow by running it on Latch
2. Create Automation
Navigate to Automations tab via Worfklows > Automations and click on the Create Automation button.
-
Input an Automation Name and Description.
-
Select the
Event Type
asInterval
. -
Specify
Interval
to 1 hour. -
Select the automation workflow that you have just registered with Latch.
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