Changed code to support older Python versions

venv/lib/python3.11/site-packages/sentry_sdk/worker.py

@@ -0,0 +1,141 @@
+import os
+import threading
+
+from time import sleep, time
+from sentry_sdk._queue import Queue, FullError
+from sentry_sdk.utils import logger
+from sentry_sdk.consts import DEFAULT_QUEUE_SIZE
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from typing import Any
+    from typing import Optional
+    from typing import Callable
+
+
+_TERMINATOR = object()
+
+
+class BackgroundWorker:
+    def __init__(self, queue_size=DEFAULT_QUEUE_SIZE):
+        # type: (int) -> None
+        self._queue = Queue(queue_size)  # type: Queue
+        self._lock = threading.Lock()
+        self._thread = None  # type: Optional[threading.Thread]
+        self._thread_for_pid = None  # type: Optional[int]
+
+    @property
+    def is_alive(self):
+        # type: () -> bool
+        if self._thread_for_pid != os.getpid():
+            return False
+        if not self._thread:
+            return False
+        return self._thread.is_alive()
+
+    def _ensure_thread(self):
+        # type: () -> None
+        if not self.is_alive:
+            self.start()
+
+    def _timed_queue_join(self, timeout):
+        # type: (float) -> bool
+        deadline = time() + timeout
+        queue = self._queue
+
+        queue.all_tasks_done.acquire()
+
+        try:
+            while queue.unfinished_tasks:
+                delay = deadline - time()
+                if delay <= 0:
+                    return False
+                queue.all_tasks_done.wait(timeout=delay)
+
+            return True
+        finally:
+            queue.all_tasks_done.release()
+
+    def start(self):
+        # type: () -> None
+        with self._lock:
+            if not self.is_alive:
+                self._thread = threading.Thread(
+                    target=self._target, name="sentry-sdk.BackgroundWorker"
+                )
+                self._thread.daemon = True
+                try:
+                    self._thread.start()
+                    self._thread_for_pid = os.getpid()
+                except RuntimeError:
+                    # At this point we can no longer start because the interpreter
+                    # is already shutting down.  Sadly at this point we can no longer
+                    # send out events.
+                    self._thread = None
+
+    def kill(self):
+        # type: () -> None
+        """
+        Kill worker thread. Returns immediately. Not useful for
+        waiting on shutdown for events, use `flush` for that.
+        """
+        logger.debug("background worker got kill request")
+        with self._lock:
+            if self._thread:
+                try:
+                    self._queue.put_nowait(_TERMINATOR)
+                except FullError:
+                    logger.debug("background worker queue full, kill failed")
+
+                self._thread = None
+                self._thread_for_pid = None
+
+    def flush(self, timeout, callback=None):
+        # type: (float, Optional[Any]) -> None
+        logger.debug("background worker got flush request")
+        with self._lock:
+            if self.is_alive and timeout > 0.0:
+                self._wait_flush(timeout, callback)
+        logger.debug("background worker flushed")
+
+    def full(self):
+        # type: () -> bool
+        return self._queue.full()
+
+    def _wait_flush(self, timeout, callback):
+        # type: (float, Optional[Any]) -> None
+        initial_timeout = min(0.1, timeout)
+        if not self._timed_queue_join(initial_timeout):
+            pending = self._queue.qsize() + 1
+            logger.debug("%d event(s) pending on flush", pending)
+            if callback is not None:
+                callback(pending, timeout)
+
+            if not self._timed_queue_join(timeout - initial_timeout):
+                pending = self._queue.qsize() + 1
+                logger.error("flush timed out, dropped %s events", pending)
+
+    def submit(self, callback):
+        # type: (Callable[[], None]) -> bool
+        self._ensure_thread()
+        try:
+            self._queue.put_nowait(callback)
+            return True
+        except FullError:
+            return False
+
+    def _target(self):
+        # type: () -> None
+        while True:
+            callback = self._queue.get()
+            try:
+                if callback is _TERMINATOR:
+                    break
+                try:
+                    callback()
+                except Exception:
+                    logger.error("Failed processing job", exc_info=True)
+            finally:
+                self._queue.task_done()
+            sleep(0)