Update enduser domain and add enduser.pseudo.id

.chloggen/add_enduser_pseudo_id.yaml

@@ -0,0 +1,23 @@
+# 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: enhancement
+
+# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
+component: enduser
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: introduce new attribute `enduser.pseudo.id`
+
+# 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: [1104]
+
+# (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: |
+  The new attribute `enduser.pseudo.id` is intended to provide an unique identifier of a pseudonymous enduser.

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -44,6 +44,7 @@ body:
         - area:disk
         - area:dns
         - area:dotnet
+        - area:enduser
         - area:elasticsearch
         - area:error
         - area:exception

.github/ISSUE_TEMPLATE/change_proposal.yaml

@@ -36,6 +36,7 @@ body:
         - area:disk
         - area:dns
         - area:dotnet
+        - area:enduser
         - area:elasticsearch
         - area:error
         - area:exception

docs/attributes-registry/enduser.md

@@ -6,12 +6,29 @@
 
 # Enduser
 
+- [End User Attributes](#end-user-attributes)
+- [Deprecated End User Attributes](#deprecated-end-user-attributes)
+
+## End User Attributes
+
+Describes the end user.
+
+| Attribute | Type | Description | Examples | Stability |
+|---|---|---|---|---|
+| <a id="enduser-id" href="#enduser-id">`enduser.id`</a> | string | Unique identifier of an end user in the system. It maybe a username, email address, or other identifier. [1] | `username` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| <a id="enduser-pseudo-id" href="#enduser-pseudo-id">`enduser.pseudo.id`</a> | string | Pseudonymous identifier of an end user. This identifier should be a random value that is not directly linked or associated with the end user's actual identity. [2] | `QdH5CAWJgqVT4rOr0qtumf` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+**[1] `enduser.id`:** > [!Warning]
+> This field contains sensitive (PII) information.
+
+**[2] `enduser.pseudo.id`:** > [!Warning]
+> This field contains sensitive (linkable PII) information.
+
 ## Deprecated End User Attributes
 
-Describes deprecated enduser attributes. Complete enduser namespace has been deprecated
+Describes deprecated enduser attributes.
 
 | Attribute | Type | Description | Examples | Stability |
 |---|---|---|---|---|
-| <a id="enduser-id" href="#enduser-id">`enduser.id`</a> | string | Deprecated, use `user.id` instead. | `username` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `user.id` attribute. |
-| <a id="enduser-role" href="#enduser-role">`enduser.role`</a> | string | Deprecated, use `user.roles` instead. | `admin` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `user.roles` attribute. |
+| <a id="enduser-role" href="#enduser-role">`enduser.role`</a> | string | Deprecated, use `user.roles` instead. | `admin` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Removed. |
 | <a id="enduser-scope" href="#enduser-scope">`enduser.scope`</a> | string | Deprecated, no replacement at this time. | `read:message, write:files` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Removed. |

docs/general/attributes.md

@@ -396,9 +396,14 @@ These attributes may be used for any operation with an authenticated and/or auth
 
 | Attribute  | Type | Description  | Examples  | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
 |---|---|---|---|---|---|
-| [`enduser.id`](/docs/attributes-registry/enduser.md) | string | Deprecated, use `user.id` instead. | `username` | `Recommended` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `user.id` attribute. |
-| [`enduser.role`](/docs/attributes-registry/enduser.md) | string | Deprecated, use `user.roles` instead. | `admin` | `Recommended` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `user.roles` attribute. |
-| [`enduser.scope`](/docs/attributes-registry/enduser.md) | string | Deprecated, no replacement at this time. | `read:message, write:files` | `Recommended` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Removed. |
+| [`enduser.id`](/docs/attributes-registry/enduser.md) | string | Unique identifier of an end user in the system. It maybe a username, email address, or other identifier. [1] | `username` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| [`enduser.pseudo.id`](/docs/attributes-registry/enduser.md) | string | Pseudonymous identifier of an end user. This identifier should be a random value that is not directly linked or associated with the end user's actual identity. [2] | `QdH5CAWJgqVT4rOr0qtumf` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+**[1] `enduser.id`:** > [!Warning]
+> This field contains sensitive (PII) information.
+
+**[2] `enduser.pseudo.id`:** > [!Warning]
+> This field contains sensitive (linkable PII) information.
 
 <!-- markdownlint-restore -->
 <!-- prettier-ignore-end -->
@@ -439,6 +444,19 @@ Given the sensitive nature of this information, SDKs and exporters SHOULD drop t
 default and then provide a configuration parameter to turn on retention for use cases where the
 information is required and would not violate any policies or regulations.
 
+Enduser attributes capture end user identity. They are likely to contain PII and should be populated, processed, and stored with caution.
+Information about the end user is usually available on the client side (in a mobile or browser application).
+Enduser attributes are populated by the user application in coordination with OpenTelemetry SDK.
+Some OpenTelemetry distributions auto-collect this information from HTTP cookies.
+When user information is available, it's RECOMMENDED to add it to all spans and events emitted in the scope
+of operation initiated by this user.
+
+Application in coordination with OpenTelemetry SDK and Distro MAY propagate user information from the client application
+to the front end and across different backend services using custom HTTP cookies and/or [Baggage]<https://github.com/open-telemetry/opentelemetry-specification/blob/v1.40.0/specification/baggage/api.md>.
+
+Enduser information is collected and populated manually by user application or specialized components,
+other instrumentations such as HTTP or RPC are not expected to populate these attributes by default.
+
 ## General thread attributes
 
 These attributes may be used for any operation to store information about

model/enduser/common.yaml

@@ -0,0 +1,10 @@
+groups:
+  - id: identity
+    type: attribute_group
+    brief: >
+      Describes end user identity.
+    attributes:
+      - ref: enduser.id
+        requirement_level: recommended
+      - ref: enduser.pseudo.id
+        requirement_level: recommended

model/enduser/deprecated/registry-deprecated.yaml

@@ -2,23 +2,17 @@ groups:
   - id: registry.enduser.deprecated
     type: attribute_group
     display_name: Deprecated End User Attributes
-    brief: Describes deprecated enduser attributes. Complete enduser namespace has been deprecated
+    brief: "Describes deprecated enduser attributes."
     attributes:
-      - id: enduser.id
-        type: string
-        stability: experimental
-        deprecated: Replaced by `user.id` attribute.
-        brief: "Deprecated, use `user.id` instead."
-        examples: 'username'
       - id: enduser.role
         type: string
+        deprecated: "Removed."
         stability: experimental
-        deprecated: Replaced by `user.roles` attribute.
         brief: "Deprecated, use `user.roles` instead."
         examples: 'admin'
       - id: enduser.scope
         type: string
+        deprecated: "Removed."
         stability: experimental
-        deprecated: Removed.
         brief: "Deprecated, no replacement at this time."
         examples: 'read:message, write:files'

model/enduser/registry.yaml

@@ -0,0 +1,24 @@
+groups:
+  - id: registry.enduser
+    type: attribute_group
+    display_name: End User Attributes
+    brief: >
+      Describes the end user.
+    attributes:
+      - id: enduser.id
+        type: string
+        brief: "Unique identifier of an end user in the system. It maybe a username, email address, or other identifier."
+        note: |
+          > [!Warning]
+          > This field contains sensitive (PII) information.
+        examples: [ 'username' ]
+        stability: development
+      - id: enduser.pseudo.id
+        type: string
+        stability: development
+        brief: >
+          Pseudonymous identifier of an end user. This identifier should be a random value that is not directly linked or associated with the end user's actual identity.
+        note: |
+          > [!Warning]
+          > This field contains sensitive (linkable PII) information.
+        examples: ['QdH5CAWJgqVT4rOr0qtumf']