Updates

ETB-API/venv/lib/python3.12/site-packages/prometheus_client/context_managers.py

@@ -0,0 +1,82 @@
+from timeit import default_timer
+from types import TracebackType
+from typing import (
+    Any, Callable, Literal, Optional, Tuple, Type, TYPE_CHECKING, TypeVar,
+    Union,
+)
+
+from .decorator import decorate
+
+if TYPE_CHECKING:
+    from . import Counter
+    F = TypeVar("F", bound=Callable[..., Any])
+
+
+class ExceptionCounter:
+    def __init__(self, counter: "Counter", exception: Union[Type[BaseException], Tuple[Type[BaseException], ...]]) -> None:
+        self._counter = counter
+        self._exception = exception
+
+    def __enter__(self) -> None:
+        pass
+
+    def __exit__(self, typ: Optional[Type[BaseException]], value: Optional[BaseException], traceback: Optional[TracebackType]) -> Literal[False]:
+        if isinstance(value, self._exception):
+            self._counter.inc()
+        return False
+
+    def __call__(self, f: "F") -> "F":
+        def wrapped(func, *args, **kwargs):
+            with self:
+                return func(*args, **kwargs)
+
+        return decorate(f, wrapped)
+
+
+class InprogressTracker:
+    def __init__(self, gauge):
+        self._gauge = gauge
+
+    def __enter__(self):
+        self._gauge.inc()
+
+    def __exit__(self, typ, value, traceback):
+        self._gauge.dec()
+
+    def __call__(self, f: "F") -> "F":
+        def wrapped(func, *args, **kwargs):
+            with self:
+                return func(*args, **kwargs)
+
+        return decorate(f, wrapped)
+
+
+class Timer:
+    def __init__(self, metric, callback_name):
+        self._metric = metric
+        self._callback_name = callback_name
+
+    def _new_timer(self):
+        return self.__class__(self._metric, self._callback_name)
+
+    def __enter__(self):
+        self._start = default_timer()
+        return self
+
+    def __exit__(self, typ, value, traceback):
+        # Time can go backwards.
+        duration = max(default_timer() - self._start, 0)
+        callback = getattr(self._metric, self._callback_name)
+        callback(duration)
+
+    def labels(self, *args, **kw):
+        self._metric = self._metric.labels(*args, **kw)
+
+    def __call__(self, f: "F") -> "F":
+        def wrapped(func, *args, **kwargs):
+            # Obtaining new instance of timer every time
+            # ensures thread safety and reentrancy.
+            with self._new_timer():
+                return func(*args, **kwargs)
+
+        return decorate(f, wrapped)