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Code Issues Releases Wiki Activity

Refactor webide rate limiting

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This commit is contained in:
Kristóf Tóth 2018-02-13 14:55:33 +01:00
parent 4d49c8d11b
commit 60bcb8c2b0
1 changed files with 23 additions and 13 deletions
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36
lib/tfw/components/directory_monitor.py
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@ -1,6 +1,7 @@
from time import time, sleep from time import time, sleep
from watchdog.observers import Observer from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler from watchdog.events import FileSystemEventHandler
from functools import wraps
from tfw.networking.event_handlers.server_connector import ServerUplinkConnector from tfw.networking.event_handlers.server_connector import ServerUplinkConnector
@ -8,23 +9,19 @@ from tfw.config.logs import logging
log = logging.getLogger(__name__) log = logging.getLogger(__name__)
class WebideReloadEventHandler(FileSystemEventHandler): class RateLimiter:
def __init__(self, rate_per_second): def __init__(self, rate_per_second):
super().__init__()
self.uplink = ServerUplinkConnector()
self.min_interval = 1 / float(rate_per_second) self.min_interval = 1 / float(rate_per_second)
self.last_call = time() self.last_call = time()
def on_modified(self, event): def __call__(self, fun):
self.limit_rate() @wraps(fun)
def wrapper(*args, **kwargs):
self._limit_rate()
fun(*args, **kwargs)
return wrapper
log.debug(event) def _limit_rate(self): #TODO: pls review me :3
anchor = 'anchor_webide'
self.uplink.send(anchor, {'anchor': anchor,
'data': {'command': 'reload'}})
def limit_rate(self): #TODO: pls review me :3
since_last_call = time() - self.last_call since_last_call = time() - self.last_call
to_next_call = self.min_interval - since_last_call to_next_call = self.min_interval - since_last_call
self.last_call = time() self.last_call = time()
@ -32,10 +29,23 @@ class WebideReloadEventHandler(FileSystemEventHandler):
sleep(to_next_call) sleep(to_next_call)
class WebideReloadEventHandler(FileSystemEventHandler):
def __init__(self):
super().__init__()
self.uplink = ServerUplinkConnector()
@RateLimiter(rate_per_second=5)
def on_modified(self, event):
log.debug(event)
anchor = 'anchor_webide'
self.uplink.send(anchor, {'anchor': anchor,
'data': {'command': 'reload'}})
class DirectoryMonitor: class DirectoryMonitor:
def __init__(self, directory): def __init__(self, directory):
self.observer = Observer() self.observer = Observer()
self.observer.schedule(WebideReloadEventHandler(rate_per_second=5), directory, recursive=True) self.observer.schedule(WebideReloadEventHandler(), directory, recursive=True)
def watch(self): def watch(self):
self.observer.start() self.observer.start()