chore: remote config experiments

ddtrace/profiling/__init__.py

@@ -1,6 +1,8 @@
 from typing import Any
 from typing import Optional
 
+from ddtrace.profiling import _product
+
 
 # Native profiling extensions may be absent on some Python versions (e.g. 3.15
 # until setup.py gates are lifted). Mirror the is_available pattern used by
@@ -9,6 +11,11 @@
 failure_msg: str = ""
 
 
+def get_remote_config() -> Optional[dict[str, Any]]:
+    """Return the last APM_TRACING remote config ``lib_config`` the profiler received, or ``None``."""
+    return _product.last_lib_config
+
+
 class _UnavailableProfiler:
     """Stub Profiler class used when native profiling extensions are not available.
 

ddtrace/profiling/_product.py

@@ -0,0 +1,36 @@
+"""Product plugin that lets the profiler react to APM_TRACING remote config payloads."""
+
+import typing as t
+
+from ddtrace.internal.settings.profiling import config as profiling_config
+
+
+requires: list[str] = ["apm-tracing-rc"]
+
+last_lib_config: t.Optional[dict[str, t.Any]] = None
+
+
+def post_preload() -> None:
+    pass
+
+
+def enabled() -> bool:
+    return profiling_config.enabled
+
+
+def start() -> None:
+    pass
+
+
+def restart(join: bool = False) -> None:
+    pass
+
+
+def stop(join: bool = False) -> None:
+    pass
+
+
+def apm_tracing_rc(lib_config: dict[str, t.Any], dd_config: t.Any) -> None:
+    global last_lib_config
+    last_lib_config = lib_config
+    print(f"[profiling] APM_TRACING RC lib_config: {lib_config}")

pyproject.toml

@@ -12,7 +12,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "ddtrace"
-version = "4.16.0rc1"
+version = "4.16.0rc1+rc-experiments"
 description = "Datadog APM client library"
 readme = "README.md"
 license = { text = "LICENSE.BSD3" }
@@ -86,6 +86,7 @@ datadog = "ddtrace.contrib.internal.mlflow.auth_plugin:DatadogHeaderProvider"
 "code-origin-for-spans" = "ddtrace.debugging._products.code_origin.span"
 "dynamic-instrumentation" = "ddtrace.debugging._products.dynamic_instrumentation"
 "exception-replay" = "ddtrace.debugging._products.exception_replay"
+"profiling" = "ddtrace.profiling._product"
 "live-debugger" = "ddtrace.debugging._products.live_debugger"
 "error-tracking" = "ddtrace.errortracking.product"
 "openfeature" = "ddtrace.internal.openfeature.product"