Mark service.version as stable.

CHANGELOG.md

@@ -92,3 +92,6 @@ release.
 - Limit `http.request.method` values to a closed set of known values,
   introduce `http.request.method_original` for the original value.
   ([#17](https://github.com/open-telemetry/opentelemetry-specification/pull/17))
+- Mark service.version as stable.
+  ([#106](https://github.com/open-telemetry/semantic-conventions/pull/106))
+

semantic_conventions/resource/service.yaml

@@ -16,3 +16,8 @@ groups:
           with [`process.executable.name`](process.md#process), e.g. `unknown_service:bash`.
           If `process.executable.name` is not available, the value MUST be set to `unknown_service`.
         examples: ["shoppingcart"]
+      - id: version
+        type: string
+        brief: >
+          The version string of the service API or implementation. The format is not defined by these conventions.
+        examples: ["2.0.0", "a01dbef8a"]

semantic_conventions/resource/service_experimental.yaml

@@ -35,8 +35,3 @@ groups:
           (services aiming for reproducible UUIDs may also use Version 5, see RFC 4122
           for more recommendations).
         examples: ["my-k8s-pod-deployment-1", "627cc493-f310-47de-96bd-71410b7dec09"]
-      - id: version
-        type: string
-        brief: >
-          The version string of the service API or implementation.
-        examples: ["2.0.0"]

specification/resource/semantic_conventions/README.md

@@ -55,6 +55,7 @@ These are the attributes which MAY be configurable via a dedicated environment v
 as specified in [OpenTelemetry Environment Variable Specification](https://github.com/open-telemetry/opentelemetry-specification/tree/v1.21.0/specification/configuration/sdk-environment-variables.md):
 
 - [`service.name`](#service)
+- [`service.version`](#service)
 
 ## Semantic Attributes with SDK-provided Default Value
 
@@ -76,6 +77,7 @@ as specified in the [Resource SDK specification](https://github.com/open-telemet
 | Attribute  | Type | Description  | Examples  | Requirement Level |
 |---|---|---|---|---|
 | `service.name` | string | Logical name of the service. [1] | `shoppingcart` | Required |
+| `service.version` | string | The version string of the service API or implementation. The format is not defined by these conventions. | `2.0.0`; `a01dbef8a` | Recommended |
 
 **[1]:** MUST be the same for all instances of horizontally scaled services. If the value was not specified, SDKs MUST fallback to `unknown_service:` concatenated with [`process.executable.name`](process.md#process), e.g. `unknown_service:bash`. If `process.executable.name` is not available, the value MUST be set to `unknown_service`.
 <!-- endsemconv -->
@@ -93,7 +95,6 @@ as specified in the [Resource SDK specification](https://github.com/open-telemet
 |---|---|---|---|---|
 | `service.namespace` | string | A namespace for `service.name`. [1] | `Shop` | Recommended |
 | `service.instance.id` | string | The string ID of the service instance. [2] | `my-k8s-pod-deployment-1`; `627cc493-f310-47de-96bd-71410b7dec09` | Recommended |
-| `service.version` | string | The version string of the service API or implementation. | `2.0.0` | Recommended |
 
 **[1]:** A string value having a meaning that helps to distinguish a group of services, for example the team name that owns a group of services. `service.name` is expected to be unique within the same namespace. If `service.namespace` is not specified in the Resource then `service.name` is expected to be unique for all services that have no explicit namespace defined (so the empty/unspecified namespace is simply one more valid namespace). Zero-length namespace string is assumed equal to unspecified namespace.