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Webhooks

We use Contentful webhooks to notify our application of new and updated content.

Settings

The following are the minimal required settings for two types of webhook. Both are needed for each application environment to ensure the content there is up-to-date.

Cache busting webhook

This webhook is triggered when any action is performed on a Contentufl entry, e.g. create, save, delete, etc. This lets our application know that there has been a content change and the old version of the entry is deleted from the cache.
Env: CONTENTFUL_ENVIRONMENT=staging
Filter: sys.environment.sys.id == staging
Headers: Authorization Token xxxxxx
Content-Type application/json

Payload:

{
  "entityId": "{ /payload/sys/id }",
  "spaceId": "{ /payload/sys/space/sys/id }",
  "parameters": {
    "text": "Entity version: { /payload/sys/version }"
  }
}

Published category webhook

This webhook is triggered when a Category entry has been (re)published.
Env: CONTENTFUL_ENVIRONMENT=staging
Filters: sys.environment.sys.id == staging
sys.contentType.sys.id == category
Headers: Authorization Token xxxxxx
Content-Type application/json
Payload: default

Published page webhook

This webhook is triggered when a Page entry has been (re)published.
Env: CONTENTFUL_ENVIRONMENT=staging
Filters: sys.environment.sys.id == staging
sys.contentType.sys.id == page
Headers: Authorization Token xxxxxx
Content-Type application/json
Payload: default

Deleted page webhook

This webhook is triggered when a Page entry has been deleted or unpublished.
Env: CONTENTFUL_ENVIRONMENT=staging
Filters: sys.environment.sys.id == staging
sys.contentType.sys.id == page
Headers: Authorization Token xxxxxx
Content-Type application/json
Payload: default

Open Tunnel via Ngrok

Working with incoming webhooks (i.e. contentful) can be made easier by using ngrok. The easiest way to install ngrok is probably through brew ($ brew install ngrok), otherwise docs can be found here upon setting up a free account.

Upon starting the local server ($ script/server), you can then run ngrok:

$ ngrok http https://localhost:3000

Once connected, you use the forwarding address which appears in the terminal for the incoming webhooks and route to the respective controller. With a free ngrok account, the forwarding address for each developer is different every time, so the webhooks in Contentful will need to be updated regularly.

To avoid any confusion, and adopt a common convention, the name of the developer can be used when naming the webhook in Contentful.

  • Web interface will be available on http://localhost:4040 - allowing you view the raw payload of incoming requests.