Creating a trigger node without a webhook

sfenig · December 7, 2021, 1:13am

I am working with an API that doesn’t support webhooks, but I’d like to set up the node as a trigger node. Essentially the node would poll an endpoint for new or updated records (would need to use node storage with id, and last_updated_at). When it finds something new should trigger the workflow. The Trigger nodes seem to require a webhook API, so what’s the recommended approach for developing this type of node?

This would be similar to this Creating triggers for n8n workflows using polling ⏲ but as a core node.
Thanks for the help.

sfenig · December 7, 2021, 1:34am

Looks like maybe trigger or poll is what I was looking for rather than webhook from the sample. Google Calendar is a good example.

MutedJam · December 7, 2021, 9:38am

Hi @sfenig, first of all welcome to the community

You’re spot on - I reckon you have found the new Google Calendar trigger in our repository already? If not, it’d be here:

github.com

n8n-io/n8n/blob/master/packages/nodes-base/nodes/Google/Calendar/GoogleCalendarTrigger.node.ts


import {
	IDataObject,
	ILoadOptionsFunctions,
	INodeExecutionData,
	INodePropertyOptions,
	INodeType,
	INodeTypeDescription,
	IPollFunctions,
	NodeApiError,
	NodeOperationError,
} from 'n8n-workflow';

import {
	googleApiRequest,
	googleApiRequestAllItems,
} from './GenericFunctions';

import * as moment from 'moment';

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Creating a trigger node without a webhook

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