pass plugin config args to entry point exporters, reject otlp_file_development

Plugin exporters now receive their config as kwargs:
  load_entry_point("group", name)(**(plugin_config or {}))
Previously config values were discarded.

otlp_file_development is explicitly rejected with ConfigurationError
on all three signals — it's an experimental schema field not yet
supported by the SDK.

Assisted-by: Claude Opus 4.6

Author: MikeGoldsmith

opentelemetry-sdk/src/opentelemetry/sdk/_configuration/_logger_provider.py

@@ -144,13 +144,20 @@ def _create_log_record_exporter(
     by the @_additional_properties decorator are loaded via the
     ``opentelemetry_logs_exporter`` entry point group.
     """
+    if config.otlp_file_development is not None:
+        raise ConfigurationError(
+            "otlp_file_development log exporter is experimental "
+            "and not yet supported."
+        )
     for name, factory in _LOG_EXPORTER_REGISTRY.items():
         value = getattr(config, name, None)
         if value is not None:
             return factory(value)
     if config.additional_properties:
-        name = next(iter(config.additional_properties))
-        return load_entry_point("opentelemetry_logs_exporter", name)()
+        name, plugin_config = next(iter(config.additional_properties.items()))
+        return load_entry_point("opentelemetry_logs_exporter", name)(
+            **(plugin_config or {})
+        )
     raise ConfigurationError(
         "No exporter type specified in log record exporter config. "
         "Supported types: console, otlp_http, otlp_grpc."

opentelemetry-sdk/src/opentelemetry/sdk/_configuration/_meter_provider.py

@@ -357,13 +357,20 @@ def _create_push_metric_exporter(
     by the @_additional_properties decorator are loaded via the
     ``opentelemetry_metrics_exporter`` entry point group.
     """
+    if config.otlp_file_development is not None:
+        raise ConfigurationError(
+            "otlp_file_development metric exporter is experimental "
+            "and not yet supported."
+        )
     for name, factory in _METRIC_EXPORTER_REGISTRY.items():
         value = getattr(config, name, None)
         if value is not None:
             return factory(value)
     if config.additional_properties:
-        name = next(iter(config.additional_properties))
-        return load_entry_point("opentelemetry_metrics_exporter", name)()
+        name, plugin_config = next(iter(config.additional_properties.items()))
+        return load_entry_point("opentelemetry_metrics_exporter", name)(
+            **(plugin_config or {})
+        )
     raise ConfigurationError(
         "No exporter type specified in push metric exporter config. "
         "Supported types: console, otlp_http, otlp_grpc."

opentelemetry-sdk/src/opentelemetry/sdk/_configuration/_tracer_provider.py

@@ -152,13 +152,20 @@ def _create_span_exporter(config: SpanExporterConfig) -> SpanExporter:
     by the @_additional_properties decorator are loaded via the
     ``opentelemetry_traces_exporter`` entry point group.
     """
+    if config.otlp_file_development is not None:
+        raise ConfigurationError(
+            "otlp_file_development span exporter is experimental "
+            "and not yet supported."
+        )
     for name, factory in _SPAN_EXPORTER_REGISTRY.items():
         value = getattr(config, name, None)
         if value is not None:
             return factory(value)
     if config.additional_properties:
-        name = next(iter(config.additional_properties))
-        return load_entry_point("opentelemetry_traces_exporter", name)()
+        name, plugin_config = next(iter(config.additional_properties.items()))
+        return load_entry_point("opentelemetry_traces_exporter", name)(
+            **(plugin_config or {})
+        )
     raise ConfigurationError(
         "No exporter type specified in span exporter config. "
         "Supported types: otlp_http, otlp_grpc, console."