Update docs for entrypoints

docs/sdk/entry_points.rst

@@ -0,0 +1,99 @@
+Entry Points
+============
+
+OpenTelemetry Python uses Python's `entry points <https://setuptools.pypa.io/en/stable/userguide/entry_point.html>`_ mechanism to provide a pluggable architecture. Entry points allow you to register custom components (exporters, samplers, etc.) that can be discovered and loaded at runtime.
+
+Configuration
+-------------
+
+The SDK supports configuring entry points via environment variables by specifying the entry point name. For a complete list of supported environment variables, see :doc:`../api/environment_variables`.
+
+Entry Point Configuration Reference
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+**Logs Exporter**
+
+:Environment Variable: ``OTEL_LOGS_EXPORTER``
+:Entry Point Group: ``opentelemetry_logs_exporter``
+:Available Names: ``console``, ``otlp_proto_grpc``, ``otlp_proto_http``
+:Base Type: ``LogExporter`` *(experimental)*
+
+**Metrics Exporter**
+
+:Environment Variable: ``OTEL_METRICS_EXPORTER``
+:Entry Point Group: ``opentelemetry_metrics_exporter``
+:Available Names: ``console``, ``otlp``, ``otlp_proto_grpc``, ``otlp_proto_http``, ``prometheus``
+:Base Type: :class:`MetricExporter <opentelemetry.sdk.metrics.export.MetricExporter>` or :class:`MetricReader <opentelemetry.sdk.metrics.export.MetricReader>`
+
+**Propagators**
+
+:Environment Variable: ``OTEL_PROPAGATORS``
+:Entry Point Group: ``opentelemetry_propagator``
+:Available Names: ``b3``, ``b3multi``, ``baggage``, ``jaeger``, ``tracecontext``
+:Base Type: :class:`TextMapPropagator <opentelemetry.propagators.textmap.TextMapPropagator>`
+
+**Traces Sampler**
+
+:Environment Variable: ``OTEL_TRACES_SAMPLER``
+:Entry Point Group: ``opentelemetry_traces_sampler``
+:Available Names: ``always_off``, ``always_on``, ``parentbased_always_off``, ``parentbased_always_on``, ``parentbased_traceidratio``, ``traceidratio``
+:Base Type: :class:`Sampler <opentelemetry.sdk.trace.sampling.Sampler>`
+
+**Resource Detectors**
+
+:Environment Variable: ``OTEL_EXPERIMENTAL_RESOURCE_DETECTORS``
+:Entry Point Group: ``opentelemetry_resource_detector``
+:Available Names: ``host``, ``os``, ``otel``, ``process``
+:Base Type: :class:`ResourceDetector <opentelemetry.sdk.resources.ResourceDetector>`
+
+**ID Generator**
+
+:Environment Variable: ``OTEL_PYTHON_ID_GENERATOR``
+:Entry Point Group: ``opentelemetry_id_generator``
+:Available Names: ``random``
+:Base Type: :class:`IdGenerator <opentelemetry.sdk.trace.id_generator.IdGenerator>`
+
+**Traces Exporter**
+
+:Environment Variable: ``OTEL_TRACES_EXPORTER``
+:Entry Point Group: ``opentelemetry_traces_exporter``
+:Available Names: ``console``, ``otlp``, ``otlp_proto_grpc``, ``otlp_proto_http``, ``zipkin``, ``zipkin_json``, ``zipkin_proto``
+:Base Type: :class:`SpanExporter <opentelemetry.sdk.trace.export.SpanExporter>`
+
+**Tracer Provider**
+
+:Environment Variable: ``OTEL_PYTHON_TRACER_PROVIDER``
+:Entry Point Group: ``opentelemetry_tracer_provider``
+:Available Names: ``default_tracer_provider``, ``sdk_tracer_provider``
+:Base Type: :class:`TracerProvider <opentelemetry.trace.TracerProvider>`
+
+**Meter Provider**
+
+:Environment Variable: ``OTEL_PYTHON_METER_PROVIDER``
+:Entry Point Group: ``opentelemetry_meter_provider``
+:Available Names: ``default_meter_provider``, ``sdk_meter_provider``
+:Base Type: :class:`MeterProvider <opentelemetry.metrics.MeterProvider>`
+
+**Logger Provider**
+
+:Environment Variable: ``OTEL_PYTHON_LOGGER_PROVIDER``
+:Entry Point Group: ``opentelemetry_logger_provider``
+:Available Names: ``sdk_logger_provider``
+:Base Type: :class:`LoggerProvider <opentelemetry._logs.LoggerProvider>`
+
+**Event Logger Provider**
+
+:Environment Variable: ``OTEL_PYTHON_EVENT_LOGGER_PROVIDER``
+:Entry Point Group: ``opentelemetry_event_logger_provider`` *(not implemented)*
+:Available Names: *None - no entry point implementations exist*
+:Base Type: ``EventLoggerProvider`` *(experimental)*
+
+.. note::
+   The Events API is `experimental <https://github.com/open-telemetry/opentelemetry-python#project-status>`_ and currently has no entry point implementations. 
+
+See Also
+--------
+
+* :doc:`trace` - Trace SDK documentation
+* :doc:`metrics` - Metrics SDK documentation  
+* :doc:`environment_variables` - Environment variable reference 

docs/sdk/index.rst

@@ -12,3 +12,4 @@ OpenTelemetry Python SDK
     metrics
     error_handler
     environment_variables
+    entry_points