Unicode characters not rendered correctly in outgoing webhooks

[mderynck]

What went wrong?

What happened:

• Creating a data template for an outgoing webhook with unicode characters in the data results in them being rendered as //u0000 instead of the actual character. The character displays correctly in the last events/ custom payload area.

What did you expect to happen:

• The characters should be rendered the same as in the event.

How do we reproduce it?

1. Open Grafana OnCall navigate to Outgoing Webhooks
2. Create a new Advanced Webhook and open the editor for a templated field such as Data
3. Choose use a custom payload, add the following payload

{
  "annotations":{
    "description":"東京",
    "summary":"Notification test"
  }
}

4. Add a template that renders the data:

{{ annotations|tojson_pretty }}

5. Note in the preview the result is:

{
"description": "\\u6771\\u4eac",
"summary": "Notification test"
}

Grafana OnCall Version

v1.3.43

Product Area

Alert Flow & Configuration

Grafana OnCall Platform?

None

User's Browser?

No response

Anything else to add?

Rendering unicode characters works correctly for templates on integrations. Likely cause is somewhere there is a difference between the preview_template endpoints for integrations and webhooks.

[maskin25]

agreed with @mderynck that this will be fixed on the backend side

[joeyorlando]

going to close as it looks like this was addressed in #3670