add IdGenerator definition to TracerProvider

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 * Add development max_export_batch_size configuration to Periodic MetricReader
   ([#610](https://github.com/open-telemetry/opentelemetry-configuration/pull/610))
+* Add `id_generator` SDK extension plugin to `TracerProvider`, with built-in
+  `random` mapping to the spec-default random TraceId/SpanId generation
+  ([#70](https://github.com/open-telemetry/opentelemetry-configuration/issues/70))
 
 ## [v1.0.0] - 2026-02-27
 

opentelemetry_configuration.json

@@ -1464,6 +1464,23 @@
         }
       }
     },
+    "IdGenerator": {
+      "type": "object",
+      "additionalProperties": {
+        "type": [
+          "object",
+          "null"
+        ]
+      },
+      "minProperties": 1,
+      "maxProperties": 1,
+      "properties": {
+        "random": {
+          "$ref": "#/$defs/RandomIdGenerator",
+          "description": "Configure the ID generator to randomly generate TraceIds and SpanIds (spec default).\nIf omitted, ignore.\n"
+        }
+      }
+    },
     "IncludeExclude": {
       "type": "object",
       "additionalProperties": false,
@@ -2107,6 +2124,13 @@
         }
       }
     },
+    "RandomIdGenerator": {
+      "type": [
+        "object",
+        "null"
+      ],
+      "additionalProperties": false
+    },
     "Resource": {
       "type": "object",
       "additionalProperties": false,
@@ -2436,6 +2460,10 @@
           "$ref": "#/$defs/Sampler",
           "description": "Configure the sampler.\nIf omitted, parent based sampler with a root of always_on is used.\n"
         },
+        "id_generator": {
+          "$ref": "#/$defs/IdGenerator",
+          "description": "Configure the trace and span ID generator.\nIf omitted, RandomIdGenerator is used.\n"
+        },
         "tracer_configurator/development": {
           "$ref": "#/$defs/ExperimentalTracerConfigurator",
           "description": "Configure tracers.\nIf omitted, all tracers use default values as described in ExperimentalTracerConfig.\n"

schema-docs.md

@@ -1314,6 +1314,68 @@ No snippets.
 }</pre>
 </details>
 
+## IdGenerator <a id="idgenerator"></a>
+
+`IdGenerator` is an [SDK extension plugin](#sdk-extension-plugins).
+
+| Property | Type | Required? | Default and Null Behavior | Constraints | Description |
+|---|---|---|---|---|---|
+| `random` | [`RandomIdGenerator`](#randomidgenerator) | `false` | If omitted, ignore. | No constraints. | Configure the ID generator to randomly generate TraceIds and SpanIds (spec default). |
+
+<details>
+<summary>Language support status</summary>
+
+| Property | [cpp](language-support-status.md#cpp) | [go](language-support-status.md#go) | [java](language-support-status.md#java) | [js](language-support-status.md#js) | [php](language-support-status.md#php) |
+|---|---|---|---|---|---|
+| `random` | unknown | unknown | unknown | unknown | unknown |
+</details>
+
+Constraints: 
+
+* `additionalProperties`: `{"type":["object","null"]}`
+* `minProperties`: `1`
+* `maxProperties`: `1`
+
+Usages:
+
+* [`TracerProvider.id_generator`](#tracerprovider)
+
+Snippets:
+
+<details>
+<summary>Custom</summary>
+
+[Snippet Source File](./snippets/IdGenerator_custom.yaml)
+```yaml
+# configure a custom ID generator registered via PluginComponentProvider
+my_custom_id_generator:
+  property: value
+```
+</details>
+
+<details>
+<summary>JSON Schema</summary>
+
+[JSON Schema Source File](./schema/tracer_provider.yaml)
+<pre>{
+  "type": "object",
+  "additionalProperties": {
+    "type": [
+      "object",
+      "null"
+    ]
+  },
+  "minProperties": 1,
+  "maxProperties": 1,
+  "properties": {
+    "random": {
+      "$ref": "#/$defs/RandomIdGenerator",
+      "description": "Configure the ID generator to randomly generate TraceIds and SpanIds (spec default).\nIf omitted, ignore.\n"
+    }
+  }
+}</pre>
+</details>
+
 ## IncludeExclude <a id="includeexclude"></a>
 
 | Property | Type | Required? | Default and Null Behavior | Constraints | Description |
@@ -3053,6 +3115,33 @@ No snippets.
 }</pre>
 </details>
 
+## RandomIdGenerator <a id="randomidgenerator"></a>
+
+No properties.
+
+Constraints: 
+
+* `additionalProperties`: `false`
+
+Usages:
+
+* [`IdGenerator.random`](#idgenerator)
+
+No snippets.
+
+<details>
+<summary>JSON Schema</summary>
+
+[JSON Schema Source File](./schema/tracer_provider.yaml)
+<pre>{
+  "type": [
+    "object",
+    "null"
+  ],
+  "additionalProperties": false
+}</pre>
+</details>
+
 ## Resource <a id="resource"></a>
 
 | Property | Type | Required? | Default and Null Behavior | Constraints | Description |
@@ -4035,6 +4124,7 @@ No snippets.
 
 | Property | Type | Required? | Default and Null Behavior | Constraints | Description |
 |---|---|---|---|---|---|
+| `id_generator` | [`IdGenerator`](#idgenerator) | `false` | If omitted, RandomIdGenerator is used. | No constraints. | Configure the trace and span ID generator.<br> |
 | `limits` | [`SpanLimits`](#spanlimits) | `false` | If omitted, default values as described in SpanLimits are used. | No constraints. | Configure span limits. See also attribute_limits. |
 | `processors` | `array` of [`SpanProcessor`](#spanprocessor) | `true` | Property is required and must be non-null. | * `minItems`: `1`<br> | Configure span processors. |
 | `sampler` | [`Sampler`](#sampler) | `false` | If omitted, parent based sampler with a root of always_on is used. | No constraints. | Configure the sampler.<br> |
@@ -4045,6 +4135,7 @@ No snippets.
 
 | Property | [cpp](language-support-status.md#cpp) | [go](language-support-status.md#go) | [java](language-support-status.md#java) | [js](language-support-status.md#js) | [php](language-support-status.md#php) |
 |---|---|---|---|---|---|
+| `id_generator` | supported | unknown | supported | unknown | supported |
 | `limits` | supported | unknown | supported | unknown | supported |
 | `processors` | supported | unknown | supported | unknown | supported |
 | `sampler` | supported | unknown | supported | unknown | supported |
@@ -4086,6 +4177,10 @@ No snippets.
       "$ref": "#/$defs/Sampler",
       "description": "Configure the sampler.\nIf omitted, parent based sampler with a root of always_on is used.\n"
     },
+    "id_generator": {
+      "$ref": "#/$defs/IdGenerator",
+      "description": "Configure the trace and span ID generator.\nIf omitted, RandomIdGenerator is used.\n"
+    },
     "tracer_configurator/development": {
       "$ref": "#/$defs/ExperimentalTracerConfigurator",
       "description": "Configure tracers.\nIf omitted, all tracers use default values as described in ExperimentalTracerConfig.\n"
@@ -7114,6 +7209,7 @@ Each of the following types support referencing custom interface implementations
 SDK extension plugin types may have properties defined corresponding to built-in implementations of the interface. For example, the `otlp_http` property of `SpanExporter` defines the OTLP http/protobuf exporter.
 
 * [ExperimentalResourceDetector](#ExperimentalResourceDetector)
+* [IdGenerator](#IdGenerator)
 * [LogRecordExporter](#LogRecordExporter)
 * [LogRecordProcessor](#LogRecordProcessor)
 * [MetricProducer](#MetricProducer)

schema/meta_schema_language_cpp.yaml

@@ -72,6 +72,9 @@ typeSupportStatuses:
   - type: HttpTls
     status: supported
     propertyOverrides: []
+  - type: IdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: IncludeExclude
     status: supported
     propertyOverrides: []
@@ -148,6 +151,9 @@ typeSupportStatuses:
   - type: PushMetricExporter
     status: supported
     propertyOverrides: []
+  - type: RandomIdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: Resource
     status: supported
     propertyOverrides: []

schema/meta_schema_language_go.yaml

@@ -76,6 +76,9 @@ typeSupportStatuses:
   - type: HttpTls
     status: supported
     propertyOverrides: []
+  - type: IdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: IncludeExclude
     status: supported
     propertyOverrides: []
@@ -168,6 +171,9 @@ typeSupportStatuses:
   - type: PushMetricExporter
     status: unknown
     propertyOverrides: []
+  - type: RandomIdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: Resource
     status: unknown
     propertyOverrides: []

schema/meta_schema_language_java.yaml

@@ -78,6 +78,9 @@ typeSupportStatuses:
   - type: HttpTls
     status: supported
     propertyOverrides: []
+  - type: IdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: IncludeExclude
     status: supported
     propertyOverrides: []
@@ -164,6 +167,9 @@ typeSupportStatuses:
   - type: PushMetricExporter
     status: supported
     propertyOverrides: []
+  - type: RandomIdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: Resource
     status: supported
     propertyOverrides: []

schema/meta_schema_language_js.yaml

@@ -72,6 +72,9 @@ typeSupportStatuses:
   - type: HttpTls
     status: unknown
     propertyOverrides: []
+  - type: IdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: IncludeExclude
     status: unknown
     propertyOverrides: []
@@ -146,6 +149,9 @@ typeSupportStatuses:
   - type: PushMetricExporter
     status: unknown
     propertyOverrides: []
+  - type: RandomIdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: Resource
     status: unknown
     propertyOverrides: []

schema/meta_schema_language_php.yaml

@@ -80,6 +80,9 @@ typeSupportStatuses:
   - type: HttpTls
     status: ignored
     propertyOverrides: []
+  - type: IdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: IncludeExclude
     status: supported
     propertyOverrides: []
@@ -178,6 +181,9 @@ typeSupportStatuses:
   - type: PushMetricExporter
     status: supported
     propertyOverrides: []
+  - type: RandomIdGenerator
+    status: unknown
+    propertyOverrides: []
   - type: Resource
     status: supported
     propertyOverrides: []

schema/tracer_provider.yaml

@@ -16,6 +16,11 @@ properties:
     description: |
       Configure the sampler.
     defaultBehavior: parent based sampler with a root of always_on is used
+  id_generator:
+    $ref: "#/$defs/IdGenerator"
+    description: |
+      Configure the trace and span ID generator.
+    defaultBehavior: RandomIdGenerator is used
   tracer_configurator/development:
     $ref: "#/$defs/ExperimentalTracerConfigurator"
     description: |
@@ -396,6 +401,25 @@ $defs:
         $ref: "#/$defs/ExperimentalComposableRuleBasedSampler"
         description: Configure sampler to be rule_based.
         defaultBehavior: ignore
+  IdGenerator:
+    type: object
+    additionalProperties:
+      type:
+        - object
+        - "null"
+    minProperties: 1
+    maxProperties: 1
+    properties:
+      random:
+        $ref: "#/$defs/RandomIdGenerator"
+        description: Configure the ID generator to randomly generate TraceIds and SpanIds (spec default).
+        defaultBehavior: ignore
+    isSdkExtensionPlugin: true
+  RandomIdGenerator:
+    type:
+      - object
+      - "null"
+    additionalProperties: false
   SimpleSpanProcessor:
     type: object
     additionalProperties: false

snippets/IdGenerator_custom.yaml

@@ -0,0 +1,12 @@
+file_format: "1.0"
+
+tracer_provider:
+  processors:
+    - simple:
+        exporter:
+          console:
+  id_generator:
+    # SNIPPET_START
+    # configure a custom ID generator registered via PluginComponentProvider
+    my_custom_id_generator:
+      property: value