socketpool
Socketpool - a simple Python socket pool.
Socket pool is a simple socket pool that suports multiple factories and backends. It can easily be used by gevent, eventlet or any other library.
Usage
socketpool offers 3 main classes, a ConnectionPool class able to accept a factory and a backend, Connector an interface class inherited by all connectors and a default TCP connector TcpConnector .
Example of a simple echo client using Gevent
import gevent
from gevent.server import StreamServer
from socketpool import ConnectionPool, TcpConnector
# this handler will be run for each incoming connection
# in a dedicated greenlet
def echo(sock, address):
print ('New connection from %s:%s' % address)
while True:
data = sock.recv(1024)
if not data:
break
sock.send(data)
print ("echoed %r" % data)
if __name__ == '__main__':
import time
options = {'host': 'localhost', 'port': 6000}
pool = ConnectionPool(factory=TcpConnector, backend="gevent")
server = StreamServer(('localhost', 6000), echo)
gevent.spawn(server.serve_forever)
def runpool(data):
print 'ok'
with pool.connection(**options) as conn:
print 'sending'
sent = conn.send(data)
print 'send %d bytes' % sent
echo_data = conn.recv(1024)
print "got %s" % data
assert data == echo_data
start = time.time()
jobs = [gevent.spawn(runpool, "blahblah") for _ in xrange(20)]
gevent.joinall(jobs)
delay = time.time() - start
Example of a connector
class TcpConnector(Connector):
def __init__(self, host, port, backend_mod, pool=None):
self._s = backend_mod.Socket(socket.AF_INET, socket.SOCK_STREAM)
self._s.connect((host, port))
self.host = host
self.port = port
self._connected = True
self._life = time.time()
self._pool = pool
def __del__(self):
self.release()
def matches(self, **match_options):
target_host = match_options.get('host')
target_port = match_options.get('port')
return target_host == self.host and target_port == self.port
def is_connected(self):
return self._connected
def handle_exception(self, exception):
print 'got an exception'
print str(exception)
def get_lifetime(self):
return self._life
def invalidate(self):
self._s.close()
self._connected = False
self._life = -1
def release(self):
if self._pool is not None:
if self._connected:
self._pool.release_connection(self)
else:
self._pool = None
def send(self, data):
return self._s.send(data)
def recv(self, size=1024):
return self._s.recv(size)
Authors
- Benoรฎt Chesneau (benoitc) <[email protected]>
- Tarek Ziade (tarek) <[email protected]>
License
socketpool is available in the public domain (see UNLICENSE). socketpool is also optionally available under the MIT License (see LICENSE), meant especially for jurisdictions that do not recognize public domain works.