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import threading
import collections
import requests
class FlushThread(threading.Thread):
def __init__(self, client):
threading.Thread.__init__(self)
self.client = client
def run(self):
self.client.sync_flush()
class Client(object):
"""
Manages a simple pool of threads to flush the queue of requests.
"""
def __init__(self, num_threads=3):
self.queue = collections.deque()
self.flush_lock = threading.Lock()
self.num_threads = num_threads
self.flush_threads = [FlushThread(self) for _ in range(self.num_threads)]
self.total_sent = 0
def enqueue(self, method, *args, **kwargs):
self.queue.append((method, args, kwargs))
self.refresh_threads()
def get(self, *args, **kwargs):
self.enqueue('get', *args, **kwargs)
def post(self, *args, **kwargs):
self.enqueue('post', *args, **kwargs)
def put(self, *args, **kwargs):
self.enqueue('put', *args, **kwargs)
def delete(self, *args, **kwargs):
self.enqueue('delete', *args, **kwargs)
def refresh_threads(self):
with self.flush_lock:
# refresh if there are jobs to do and no threads are alive
if len(self.queue) > 0:
to_refresh = [index for index, thread in enumerate(self.flush_threads) if not thread.is_alive()]
for index in to_refresh:
self.flush_threads[index] = FlushThread(self)
self.flush_threads[index].start()
def sync_flush(self):
session = requests.Session()
while self.queue:
method, args, kwargs = self.queue.pop()
getattr(session, method)(*args, **kwargs)
self.total_sent += 1
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