Python3 Migrate

venv/lib/python3.7/site-packages/pykka/eventlet.py

@@ -0,0 +1,107 @@
+from __future__ import absolute_import
+
+import sys
+
+import eventlet
+import eventlet.event
+import eventlet.queue
+
+from pykka import Actor, Future, Timeout
+
+
+__all__ = ['EventletActor', 'EventletEvent', 'EventletFuture']
+
+
+class EventletEvent(eventlet.event.Event):
+    """
+    :class:`EventletEvent` adapts :class:`eventlet.event.Event` to
+    :class:`threading.Event` interface.
+    """
+
+    def set(self):
+        if self.ready():
+            self.reset()
+        self.send()
+
+    def is_set(self):
+        return self.ready()
+
+    isSet = is_set
+
+    def clear(self):
+        if self.ready():
+            self.reset()
+
+    def wait(self, timeout):
+        if timeout is not None:
+            wait_timeout = eventlet.Timeout(timeout)
+
+            try:
+                with wait_timeout:
+                    super(EventletEvent, self).wait()
+            except eventlet.Timeout as t:
+                if t is not wait_timeout:
+                    raise
+                return False
+        else:
+            self.event.wait()
+
+        return True
+
+
+class EventletFuture(Future):
+    """
+    :class:`EventletFuture` implements :class:`pykka.Future` for use with
+    :class:`EventletActor`.
+    """
+
+    event = None
+
+    def __init__(self):
+        super(EventletFuture, self).__init__()
+        self.event = eventlet.event.Event()
+
+    def get(self, timeout=None):
+        try:
+            return super(EventletFuture, self).get(timeout=timeout)
+        except NotImplementedError:
+            pass
+
+        if timeout is not None:
+            wait_timeout = eventlet.Timeout(timeout)
+            try:
+                with wait_timeout:
+                    return self.event.wait()
+            except eventlet.Timeout as t:
+                if t is not wait_timeout:
+                    raise
+                raise Timeout(t)
+        else:
+            return self.event.wait()
+
+    def set(self, value=None):
+        self.event.send(value)
+
+    def set_exception(self, exc_info=None):
+        assert exc_info is None or len(exc_info) == 3
+        self.event.send_exception(*(exc_info or sys.exc_info()))
+
+
+class EventletActor(Actor):
+    """
+    :class:`EventletActor` implements :class:`pykka.Actor` using the `eventlet
+    <https://eventlet.net/>`_ library.
+
+    This implementation uses eventlet green threads.
+    """
+
+    @staticmethod
+    def _create_actor_inbox():
+        return eventlet.queue.Queue()
+
+    @staticmethod
+    def _create_future():
+        return EventletFuture()
+
+    def _start_actor_loop(self):
+        eventlet.greenthread.spawn(self._actor_loop)