Use generic `error.message` in feature flag evaluation event (#1994)

Co-authored-by: Liudmila Molkova <limolkova@microsoft.com>
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Daniel Dyla 2025-04-08 02:30:13 +01:00 committed by GitHub
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.chloggen/ff-generic-error.yaml Executable file
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# Use this changelog template to create an entry for release notes.
#
# If your change doesn't affect end users you should instead start
# your pull request title with [chore] or use the "Skip Changelog" label.
# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
change_type: breaking
# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
component: feature_flag
# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
note: Use generic `error.message` in feature flag evaluation event
# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
# The values here must be integers.
issues: [1994]
# (Optional) One or more lines of additional information to render under the primary note.
# These lines will be padded with 2 spaces and then inserted directly into the document.
# Use pipe (|) for multiline entries.
subtext:

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@ -13,7 +13,6 @@ This document defines attributes for Feature Flags.
| Attribute | Type | Description | Examples | Stability |
|---|---|---|---|---|
| <a id="feature-flag-context-id" href="#feature-flag-context-id">`feature_flag.context.id`</a> | string | The unique identifier for the flag evaluation context. For example, the targeting key. | `5157782b-2203-4c80-a857-dbbd5e7761db` | ![Development](https://img.shields.io/badge/-development-blue) |
| <a id="feature-flag-evaluation-error-message" href="#feature-flag-evaluation-error-message">`feature_flag.evaluation.error.message`</a> | string | A message explaining the nature of an error occurring during flag evaluation. | `Flag `header-color` expected type `string` but found type `number`` | ![Development](https://img.shields.io/badge/-development-blue) |
| <a id="feature-flag-key" href="#feature-flag-key">`feature_flag.key`</a> | string | The lookup key of the feature flag. | `logo-color` | ![Development](https://img.shields.io/badge/-development-blue) |
| <a id="feature-flag-provider-name" href="#feature-flag-provider-name">`feature_flag.provider_name`</a> | string | Identifies the feature flag provider. | `Flag Manager` | ![Development](https://img.shields.io/badge/-development-blue) |
| <a id="feature-flag-result-reason" href="#feature-flag-result-reason">`feature_flag.result.reason`</a> | string | The reason code which shows how a feature flag value was determined. | `static`; `targeting_match`; `error`; `default` | ![Development](https://img.shields.io/badge/-development-blue) |
@ -48,6 +47,7 @@ Describes deprecated feature flag attributes.
| Attribute | Type | Description | Examples | Stability |
|---|---|---|---|---|
| <a id="feature-flag-evaluation-error-message" href="#feature-flag-evaluation-error-message">`feature_flag.evaluation.error.message`</a> | string | Deprecated, use `error.message` instead. | `Flag `header-color` expected type `string` but found type `number`` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `error.message`. |
| <a id="feature-flag-evaluation-reason" href="#feature-flag-evaluation-reason">`feature_flag.evaluation.reason`</a> | string | Deprecated, use `feature_flag.result.reason` instead. | `static`; `targeting_match`; `error`; `default` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `feature_flag.result.reason`. |
| <a id="feature-flag-variant" href="#feature-flag-variant">`feature_flag.variant`</a> | string | Deprecated, use `feature_flag.result.variant` instead. | `red`; `true`; `on` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `feature_flag.result.variant`. |

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@ -61,8 +61,8 @@ A `feature_flag.evaluation` event SHOULD be emitted whenever a feature flag valu
| [`feature_flag.key`](/docs/attributes-registry/feature-flag.md) | string | The lookup key of the feature flag. | `logo-color` | `Required` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.type`](/docs/attributes-registry/error.md) | string | Describes a class of error the operation ended with. [1] | `provider_not_ready`; `targeting_key_missing`; `provider_fatal`; `general` | `Conditionally Required` [2] | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`feature_flag.result.variant`](/docs/attributes-registry/feature-flag.md) | string | A semantic identifier for an evaluated flag value. [3] | `red`; `true`; `on` | `Conditionally Required` [4] | ![Development](https://img.shields.io/badge/-development-blue) |
| [`error.message`](/docs/attributes-registry/error.md) | string | A message providing more detail about an error in human-readable form. [5] | `Unexpected input type: string`; `The user has exceeded their storage quota` | `Recommended` [6] | ![Development](https://img.shields.io/badge/-development-blue) |
| [`feature_flag.context.id`](/docs/attributes-registry/feature-flag.md) | string | The unique identifier for the flag evaluation context. For example, the targeting key. | `5157782b-2203-4c80-a857-dbbd5e7761db` | `Recommended` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`feature_flag.evaluation.error.message`](/docs/attributes-registry/feature-flag.md) | string | A message explaining the nature of an error occurring during flag evaluation. | `Flag `header-color` expected type `string` but found type `number`` | `Recommended` [5] | ![Development](https://img.shields.io/badge/-development-blue) |
| [`feature_flag.provider_name`](/docs/attributes-registry/feature-flag.md) | string | Identifies the feature flag provider. | `Flag Manager` | `Recommended` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`feature_flag.result.reason`](/docs/attributes-registry/feature-flag.md) | string | The reason code which shows how a feature flag value was determined. | `static`; `targeting_match`; `error`; `default` | `Recommended` | ![Development](https://img.shields.io/badge/-development-blue) |
| [`feature_flag.set.id`](/docs/attributes-registry/feature-flag.md) | string | The identifier of the [flag set](https://openfeature.dev/specification/glossary/#flag-set) to which the feature flag belongs. | `proj-1`; `ab98sgs`; `service1/dev` | `Recommended` | ![Development](https://img.shields.io/badge/-development-blue) |
@ -90,7 +90,9 @@ For example, the variant `red` maybe be used for the value `#c05543`.
**[4] `feature_flag.result.variant`:** If feature flag provider supplies a variant or equivalent concept.
**[5] `feature_flag.evaluation.error.message`:** If and only if an error occurred. It's NOT RECOMMENDED to duplicate the value of `error.type` in `feature_flag.evaluation.error.message`.
**[5] `error.message`:** Should not simply duplicate the value of `error.type`, but should provide more context. For example, if `error.type` is `invalid_context` the `error.message` may enumerate which context keys are missing or invalid.
**[6] `error.message`:** If and only if an error occurred during flag evaluation and `error.type` does not sufficiently describe the error.
---

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@ -53,3 +53,9 @@ groups:
stability: development
deprecated: "Replaced by `feature_flag.result.variant`."
examples: ["red", "true", "on"]
- id: feature_flag.evaluation.error.message
type: string
brief: 'Deprecated, use `error.message` instead.'
stability: development
deprecated: "Replaced by `error.message`."
examples: ["Flag `header-color` expected type `string` but found type `number`"]

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@ -46,9 +46,12 @@ groups:
| `targeting_key_missing` | The provider requires a targeting key and one was not provided in the evaluation context. | ![Development](https://img.shields.io/badge/-development-blue) |
| `type_mismatch` | The type of the flag value does not match the expected type. | ![Development](https://img.shields.io/badge/-development-blue) |
| `general` | The error was for a reason not enumerated above. | ![Development](https://img.shields.io/badge/-development-blue) |
- ref: feature_flag.evaluation.error.message
- ref: error.message
requirement_level:
recommended: If and only if an error occurred. It's NOT RECOMMENDED to duplicate the value of `error.type` in `feature_flag.evaluation.error.message`.
recommended: If and only if an error occurred during flag evaluation and `error.type` does not sufficiently describe the error.
note: >
Should not simply duplicate the value of `error.type`, but should provide more context.
For example, if `error.type` is `invalid_context` the `error.message` may enumerate which context keys are missing or invalid.
body:
id: feature_flag.evaluation
type: map

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@ -88,8 +88,3 @@ groups:
examples: ["static", "targeting_match", "error", "default"]
brief: >
The reason code which shows how a feature flag value was determined.
- id: feature_flag.evaluation.error.message
type: string
stability: development
examples: ["Flag `header-color` expected type `string` but found type `number`"]
brief: A message explaining the nature of an error occurring during flag evaluation.

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@ -2,6 +2,12 @@ file_format: 1.1.0
schema_url: https://opentelemetry.io/schemas/1.31.0
versions:
next:
all:
changes:
# https://github.com/open-telemetry/semantic-conventions/pull/1994
- rename_attributes:
attribute_map:
feature_flag.evaluation.error.message: error.message
1.32.0:
all:
changes: