#!/usr/bin/python
-import sys, os, getopt, threading
+import sys, os, getopt, threading, time
import ashd.proto, ashd.util
def usage(out):
- out.write("usage: ashd-wsgi [-hA] [-p MODPATH] HANDLER-MODULE [ARGS...]\n")
+ out.write("usage: ashd-wsgi [-hA] [-p MODPATH] [-l REQLIMIT] HANDLER-MODULE [ARGS...]\n")
+reqlimit = 0
modwsgi_compat = False
-opts, args = getopt.getopt(sys.argv[1:], "+hAp:")
+opts, args = getopt.getopt(sys.argv[1:], "+hAp:l:")
for o, a in opts:
if o == "-h":
usage(sys.stdout)
sys.path.insert(0, a)
elif o == "-A":
modwsgi_compat = True
+ elif o == "-l":
+ reqlimit = int(a)
if len(args) < 1:
usage(sys.stderr)
sys.exit(1)
sys.exit(1)
handler = handlermod.application
+class closed(IOError):
+ def __init__(self):
+ super(closed, self).__init__("The client has closed the connection.")
+
cwd = os.getcwd()
def absolutify(path):
if path[0] != '/':
else:
buf += c
return buf
+
def dowsgi(req):
env = {}
env["wsgi.version"] = 1, 0
env["SERVER_PROTOCOL"] = req.ver
env["REQUEST_METHOD"] = req.method
env["REQUEST_URI"] = req.url
- try:
- env["PATH_INFO"] = unquoteurl(req.rest)
- except:
- env["PATH_INFO"] = req.rest
name = req.url
p = name.find('?')
if p >= 0:
else:
env["QUERY_STRING"] = ""
if name[-len(req.rest):] == req.rest:
+ # This is the same hack used in call*cgi.
name = name[:-len(req.rest)]
+ try:
+ pi = unquoteurl(req.rest)
+ except:
+ pi = req.rest
+ if name == '/':
+ # This seems to be normal CGI behavior, but see callcgi.c for
+ # details.
+ pi = "/" + pi
+ name = ""
env["SCRIPT_NAME"] = name
+ env["PATH_INFO"] = pi
if "Host" in req: env["SERVER_NAME"] = req["Host"]
if "X-Ash-Server-Port" in req: env["SERVER_PORT"] = req["X-Ash-Server-Port"]
if "X-Ash-Protocol" in req and req["X-Ash-Protocol"] == "https": env["HTTPS"] = "on"
raise Exception, "Trying to write data before starting response."
status, headers = resp
respsent[:] = [True]
- req.sk.write("HTTP/1.1 %s\n" % status)
- for nm, val in headers:
- req.sk.write("%s: %s\n" % (nm, val))
- req.sk.write("\n")
+ try:
+ req.sk.write("HTTP/1.1 %s\n" % status)
+ for nm, val in headers:
+ req.sk.write("%s: %s\n" % (nm, val))
+ req.sk.write("\n")
+ except IOError:
+ raise closed()
def write(data):
if not data:
return
flushreq()
- req.sk.write(data)
- req.sk.flush()
+ try:
+ req.sk.write(data)
+ req.sk.flush()
+ except IOError:
+ raise closed()
def startreq(status, headers, exc_info = None):
if resp:
respiter = handler(env, startreq)
try:
- for data in respiter:
- write(data)
- if resp:
- flushreq()
+ try:
+ for data in respiter:
+ write(data)
+ if resp:
+ flushreq()
+ except closed:
+ pass
finally:
if hasattr(respiter, "close"):
respiter.close()
+flightlock = threading.Condition()
+inflight = 0
+
class reqthread(threading.Thread):
def __init__(self, req):
super(reqthread, self).__init__(name = "Request handler")
self.req = req.dup()
def run(self):
+ global inflight
try:
- dowsgi(self.req)
+ flightlock.acquire()
+ try:
+ if reqlimit != 0:
+ start = time.time()
+ while inflight >= reqlimit:
+ flightlock.wait(10)
+ if time.time() - start > 10:
+ os.abort()
+ inflight += 1
+ finally:
+ flightlock.release()
+ try:
+ dowsgi(self.req)
+ finally:
+ flightlock.acquire()
+ try:
+ inflight -= 1
+ flightlock.notify()
+ finally:
+ flightlock.release()
finally:
self.req.close()