Delete old new squeak listener (#1084)

squeaknode/node/new_squeak_listener.py

@@ -1,102 +0,0 @@
-# MIT License
-#
-# Copyright (c) 2020 Jonathan Zernik
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in all
-# copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
-import logging
-import queue
-import threading
-import uuid
-from contextlib import contextmanager
-
-logger = logging.getLogger(__name__)
-
-DEFAULT_MAX_QUEUE_SIZE = 1000
-DEFAULT_UPDATE_INTERVAL_S = 1
-
-
-class NewSqueakListener:
-
-    def __init__(self):
-        self.callbacks = {}
-
-    def handle_new_squeak(self, squeak):
-        for callback in self.callbacks.values():
-            callback(squeak)
-
-    def add_callback(self, name, callback):
-        self.callbacks[name] = callback
-
-    def remove_callback(self, name):
-        del self.callbacks[name]
-
-
-class NewSqueakSubscriptionClient:
-
-    def __init__(
-        self,
-        new_squeak_listener: NewSqueakListener,
-        stopped: threading.Event,
-        max_queue_size=DEFAULT_MAX_QUEUE_SIZE,
-    ):
-        self.new_squeak_listener = new_squeak_listener
-        self.stopped = stopped
-        self.q: queue.Queue = queue.Queue(max_queue_size)
-
-    @contextmanager
-    def open_subscription(self):
-        threading.Thread(
-            target=self.wait_for_stopped,
-        ).start()
-        # Register the callback to populate the queue
-        callback_name = "new_squeak_callback_{}".format(uuid.uuid1()),
-        try:
-            self.new_squeak_listener.add_callback(
-                name=callback_name,
-                callback=self.enqueue_squeak,
-            )
-            logger.debug("Before yielding new squeaks client...")
-            yield self
-            logger.debug("After yielding new squeaks client...")
-        finally:
-            logger.debug("Stopping new squeaks client...")
-            self.new_squeak_listener.remove_callback(
-                name=callback_name,
-            )
-            logger.debug("Stopped new squeaks client...")
-
-    def enqueue_squeak(self, squeak):
-        self.q.put(squeak)
-
-    def wait_for_stopped(self):
-        self.stopped.wait()
-        self.q.put(None)
-
-    def get_squeak(self):
-        while True:
-            item = self.q.get()
-            if item is None:
-                logger.debug("Poison pill swallowed.")
-                return
-            yield item
-            self.q.task_done()
-            logger.debug(
-                "Removed item from queue. Size: {}".format(
-                    self.q.qsize())
-            )