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Commit 50d3afa

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statsd and future
1 parent 8b78e1b commit 50d3afa

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8 files changed

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8 files changed

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‎README.md‎

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@@ -263,6 +263,12 @@ python的强大之处有很大的一方面在于它有各种各样非常强大
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## [code](content/code.md)
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## [statsd](content/statsd.md)
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## [concurrent](content/concurrent.md)
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## [geohash](content/geohash.md)
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## [tools](content/tools.md)
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## [Other_thing](content/other_thing.md)

‎code/flask_backdoor.py‎

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# -*- coding: utf-8 -*-
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import signal
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import time
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from flask import Flask
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from gevent import monkey
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from gevent.backdoor import BackdoorServer
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monkey.patch_all()
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app = Flask(__name__)
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def handle_backdoor(num, stack):
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server = BackdoorServer(('127.0.0.1', 4998))
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server.start()
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signal.signal(signal.SIGUSR2, handle_backdoor)
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now = time.ctime()
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@app.route('/')
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def index():
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global now
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now = time.ctime()
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return now
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def main():
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app.run()
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if __name__ == '__main__':
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main()

‎code/future_get.py‎

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# -*- coding: utf-8 -*-
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import time
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import requests
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import functools
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from concurrent import futures
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def time_count(func):
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@functools.wraps(func)
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def wrapper(*args, **kwargs):
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start = time.time()
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result = func(*args, **kwargs)
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end = time.time()
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print "time", end - start
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return result
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return wrapper
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urls = ['https://ele.me',
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'https://baidu.com',
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'https://jd.com',
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'https://v2ex.com',
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'https://windard.com',
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'https://taobao.com',
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'https://zhihu.com',
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'https://vip.com',
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'https://t.tt']
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@time_count
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def main():
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executor = futures.ThreadPoolExecutor()
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roads = []
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results = []
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for url in urls:
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future = executor.submit(requests.get, url)
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roads.append(future)
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for future in futures.as_completed(roads):
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result = future.result()
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results.append(result.status_code)
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executor.shutdown()
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return results
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@time_count
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def sync_main():
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with futures.ThreadPoolExecutor() as executor:
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roads = executor.map(requests.get, urls)
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results = [result.status_code for result in roads]
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return results
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@time_count
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def async_main():
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results = []
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for url in urls:
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results.append(requests.get(url).status_code)
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return results
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if __name__ == '__main__':
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print main()
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print async_main()
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print sync_main()

‎code/select_receiver.py‎

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# -*- coding: utf-8 -*-
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import select
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import socket
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host = '127.0.0.1'
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soa_port = 8760
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sob_port = 8761
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def handle_client(soa, sob):
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fdset = [soa, sob]
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while True:
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r, w, e = select.select(fdset, [], [])
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for sock in r:
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data = sock.recv(1024)
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print sock.getsockname(), data,
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if __name__ == '__main__':
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soa = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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soa.connect((host, soa_port))
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sob = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sob.connect((host, sob_port))
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print dir(soa)
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handle_client(soa, sob)

‎code/select_sender.py‎

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# -*- coding: utf-8 -*-
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import sys
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import time
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import random
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import socket
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host = '127.0.0.1'
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port = 8760
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def handle_serve(host, port):
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server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
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server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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server.bind((host,port))
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server.listen(5)
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print "Server is running on %s:%s Press Ctrl-C to stop" % (host, port)
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while 1:
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clientsock,clientaddr = server.accept()
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print "Welcome from %s : %s"%(clientaddr[0],clientaddr[1])
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while 1:
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time.sleep(random.randint(2, 7))
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clientsock.sendall(str(time.time())+"\n")
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if __name__ == '__main__':
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if len(sys.argv) > 1:
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port = int(sys.argv[1])
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handle_serve(host, port)

‎code/statsd_demo.py‎

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# coding=utf-8
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from pystatsd import Client
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sc = Client('example.org',8125)
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sc.timing('python_test.time',500)
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sc.increment('python_test.inc_int')
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sc.decrement('python_test.decr_int')
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sc.gauge('python_test.gauge', 42)

‎code/statsd_timing.py‎

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# -*- coding: utf-8 -*-
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import time
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import random
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from statsd import StatsClient
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import functools
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statsd = StatsClient()
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@statsd.timer('myfunc')
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def myfunc(a, b):
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statsd.incr("key.incr")
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time.sleep(random.random())
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def time_deco(func):
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@functools.wraps(func)
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def wrap(*args, **kwargs):
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start_time = time.time()
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func(*args, **kwargs)
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statsd.timing('krpc.{}'.format(func.__name__),
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1000.0 * (time.time() - start_time))
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return wrap
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@time_deco
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def hello():
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time.sleep(random.random())
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if __name__ == '__main__':
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for i in range(100000):
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time.sleep(random.random() / 10)
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# myfunc(1, 1)
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hello()

‎code/threading_timer.py‎

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# -*- coding: utf-8 -*-
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import time
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import threading
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def on_timer():
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print time.time()
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set_timer()
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def set_timer():
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_timer = threading.Timer(10, on_timer)
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_timer.start()
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set_timer()
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while 1:
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time.sleep(5)
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print 'sleep', time.time()

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