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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# Adding a new metric? We have docs for that!
---
$tags:
- 'Core :: XML'
ysod:
shown_ysod:
type: event
description: >
This event is recorded only for Firefox UI documents (chrome).
Recorded when a Yellow Screen of Death is shown. The `value` is a
url on which the error happened. Yellow Screen of Death happens when
XML or XHTML document encounters a parsing error. It is commonly a
result of the document being malformed or missing DTD entity.
This data should be reviewed periodically for urls that error frequently.
This event was generated to correspond to the Legacy Telemetry event
ysod.shown#ysod.
bugs: &ysod_shown_bugs
data_reviews: &ysod_shown_data_reviews
notification_emails:
- gtatum@mozilla.com
- nordzilla@mozilla.com
- earo@mozilla.com
- vchin@mozilla.com
expires: never
extra_keys:
value:
description: >
The url of the Firefox UI (chrome) document that showed the YSOD.
type: string
error_code:
description: >
Code of the XML Error (See `XML_Error` enum in expat.h for the list of errors where XML_ERROR_NONE is 0).
type: quantity
location:
description: >
Location as Row:Column of where the error happened.
type: string
last_line:
description: >
The content of the last line that led to the error.
type: string
last_line_len:
description: >
The length of the last line that led to the error.
type: quantity
hidden:
description: >
The document is hidden.
type: boolean
destroyed:
description: >
The container of this document is destroyed.
type: string
telemetry_mirror: Ysod_Shown_Ysod