Beautifully crafted timelines that are easy and intuitive to use. http://timeline.knightlab.com/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.4 KiB
72 lines
2.4 KiB
12 years ago
|
import httplib
|
||
|
|
from urlparse import urlparse
|
||
|
|
from threading import Semaphore
|
||
|
|
from logging import debug, info, warning, error
|
||
|
|
|
||
|
|
from Config import Config
|
||
|
|
from Exceptions import ParameterError
|
||
|
|
|
||
|
|
__all__ = [ "ConnMan" ]
|
||
|
|
|
||
|
|
class http_connection(object):
|
||
|
|
def __init__(self, id, hostname, ssl, cfg):
|
||
|
|
self.hostname = hostname
|
||
|
|
self.ssl = ssl
|
||
|
|
self.id = id
|
||
|
|
self.counter = 0
|
||
|
|
if cfg.proxy_host != "":
|
||
|
|
self.c = httplib.HTTPConnection(cfg.proxy_host, cfg.proxy_port)
|
||
|
|
elif not ssl:
|
||
|
|
self.c = httplib.HTTPConnection(hostname)
|
||
|
|
else:
|
||
|
|
self.c = httplib.HTTPSConnection(hostname)
|
||
|
|
|
||
|
|
class ConnMan(object):
|
||
|
|
conn_pool_sem = Semaphore()
|
||
|
|
conn_pool = {}
|
||
|
|
conn_max_counter = 800 ## AWS closes connection after some ~90 requests
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def get(hostname, ssl = None):
|
||
|
|
cfg = Config()
|
||
|
|
if ssl == None:
|
||
|
|
ssl = cfg.use_https
|
||
|
|
conn = None
|
||
|
|
if cfg.proxy_host != "":
|
||
|
|
if ssl:
|
||
|
|
raise ParameterError("use_ssl=True can't be used with proxy")
|
||
|
|
conn_id = "proxy://%s:%s" % (cfg.proxy_host, cfg.proxy_port)
|
||
|
|
else:
|
||
|
|
conn_id = "http%s://%s" % (ssl and "s" or "", hostname)
|
||
|
|
ConnMan.conn_pool_sem.acquire()
|
||
|
|
if not ConnMan.conn_pool.has_key(conn_id):
|
||
|
|
ConnMan.conn_pool[conn_id] = []
|
||
|
|
if len(ConnMan.conn_pool[conn_id]):
|
||
|
|
conn = ConnMan.conn_pool[conn_id].pop()
|
||
|
|
debug("ConnMan.get(): re-using connection: %s#%d" % (conn.id, conn.counter))
|
||
|
|
ConnMan.conn_pool_sem.release()
|
||
|
|
if not conn:
|
||
|
|
debug("ConnMan.get(): creating new connection: %s" % conn_id)
|
||
|
|
conn = http_connection(conn_id, hostname, ssl, cfg)
|
||
|
|
conn.c.connect()
|
||
|
|
conn.counter += 1
|
||
|
|
return conn
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def put(conn):
|
||
|
|
if conn.id.startswith("proxy://"):
|
||
|
|
conn.c.close()
|
||
|
|
debug("ConnMan.put(): closing proxy connection (keep-alive not yet supported)")
|
||
|
|
return
|
||
|
|
|
||
|
|
if conn.counter >= ConnMan.conn_max_counter:
|
||
|
|
conn.c.close()
|
||
|
|
debug("ConnMan.put(): closing over-used connection")
|
||
|
|
return
|
||
|
|
|
||
|
|
ConnMan.conn_pool_sem.acquire()
|
||
|
|
ConnMan.conn_pool[conn.id].append(conn)
|
||
|
|
ConnMan.conn_pool_sem.release()
|
||
|
|
debug("ConnMan.put(): connection put back to pool (%s#%d)" % (conn.id, conn.counter))
|
||
|
|
|