add

2026-10-15 20:36:59 +08:00
commit 6bf949949c
7923 changed files with 1369582 additions and 0 deletions
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+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+from logging import getLogger
+from os import environ
+from typing import TYPE_CHECKING, TypeVar, cast
+
+if TYPE_CHECKING:
+    from opentelemetry.metrics import MeterProvider
+    from opentelemetry.trace import TracerProvider
+
+Provider = TypeVar("Provider", "TracerProvider", "MeterProvider")
+
+logger = getLogger(__name__)
+
+
+def _load_provider(provider_environment_variable: str, provider: str) -> Provider:  # type: ignore[type-var]
+    # pylint: disable=import-outside-toplevel,no-name-in-module
+    from opentelemetry.util._importlib_metadata import (  # noqa: PLC0415
+        entry_points,
+    )
+
+    try:
+        provider_name = cast(
+            str,
+            environ.get(provider_environment_variable, f"default_{provider}"),
+        )
+
+        return cast(
+            Provider,
+            next(  # type: ignore
+                iter(  # type: ignore
+                    entry_points(  # type: ignore
+                        group=f"opentelemetry_{provider}",
+                        name=provider_name,
+                    )
+                )
+            ).load()(),
+        )
+    except Exception:  # pylint: disable=broad-exception-caught
+        logger.exception("Failed to load configured provider %s", provider)
+        raise