--- /dev/null
+#!/usr/bin/python
+
+import sys, os, getopt, threading, time
+import ashd.proto, ashd.util
+
+def usage(out):
+ 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:l:")
+for o, a in opts:
+ if o == "-h":
+ usage(sys.stdout)
+ sys.exit(0)
+ elif o == "-p":
+ 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)
+
+try:
+ handlermod = __import__(args[0], fromlist = ["dummy"])
+except ImportError, exc:
+ sys.stderr.write("ashd-wsgi: handler %s not found: %s\n" % (args[0], exc.message))
+ sys.exit(1)
+if not modwsgi_compat:
+ if not hasattr(handlermod, "wmain"):
+ sys.stderr.write("ashd-wsgi: handler %s has no `wmain' function\n" % args[0])
+ sys.exit(1)
+ handler = handlermod.wmain(*args[1:])
+else:
+ if not hasattr(handlermod, "application"):
+ sys.stderr.write("ashd-wsgi: handler %s has no `application' object\n" % args[0])
+ 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] != '/':
+ return os.path.join(cwd, path)
+ return path
+
+def unquoteurl(url):
+ buf = ""
+ i = 0
+ while i < len(url):
+ c = url[i]
+ i += 1
+ if c == '%':
+ if len(url) >= i + 2:
+ c = 0
+ if '0' <= url[i] <= '9':
+ c |= (ord(url[i]) - ord('0')) << 4
+ elif 'a' <= url[i] <= 'f':
+ c |= (ord(url[i]) - ord('a') + 10) << 4
+ elif 'A' <= url[i] <= 'F':
+ c |= (ord(url[i]) - ord('A') + 10) << 4
+ else:
+ raise ValueError("Illegal URL escape character")
+ if '0' <= url[i + 1] <= '9':
+ c |= ord(url[i + 1]) - ord('0')
+ elif 'a' <= url[i + 1] <= 'f':
+ c |= ord(url[i + 1]) - ord('a') + 10
+ elif 'A' <= url[i + 1] <= 'F':
+ c |= ord(url[i + 1]) - ord('A') + 10
+ else:
+ raise ValueError("Illegal URL escape character")
+ buf += chr(c)
+ i += 2
+ else:
+ raise ValueError("Incomplete URL escape character")
+ else:
+ buf += c
+ return buf
+
+def dowsgi(req):
+ env = {}
+ env["wsgi.version"] = 1, 0
+ for key, val in req.headers:
+ env["HTTP_" + key.upper().replace("-", "_")] = val
+ env["SERVER_SOFTWARE"] = "ashd-wsgi/1"
+ env["GATEWAY_INTERFACE"] = "CGI/1.1"
+ env["SERVER_PROTOCOL"] = req.ver
+ env["REQUEST_METHOD"] = req.method
+ env["REQUEST_URI"] = req.url
+ name = req.url
+ p = name.find('?')
+ if p >= 0:
+ env["QUERY_STRING"] = name[p + 1:]
+ name = name[:p]
+ 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"
+ if "X-Ash-Address" in req: env["REMOTE_ADDR"] = req["X-Ash-Address"]
+ if "Content-Type" in req: env["CONTENT_TYPE"] = req["Content-Type"]
+ if "Content-Length" in req: env["CONTENT_LENGTH"] = req["Content-Length"]
+ if "X-Ash-File" in req: env["SCRIPT_FILENAME"] = absolutify(req["X-Ash-File"])
+ if "X-Ash-Protocol" in req: env["wsgi.url_scheme"] = req["X-Ash-Protocol"]
+ env["wsgi.input"] = req.sk
+ env["wsgi.errors"] = sys.stderr
+ env["wsgi.multithread"] = True
+ env["wsgi.multiprocess"] = False
+ env["wsgi.run_once"] = False
+
+ resp = []
+ respsent = []
+
+ def flushreq():
+ if not respsent:
+ if not resp:
+ raise Exception, "Trying to write data before starting response."
+ status, headers = resp
+ respsent[:] = [True]
+ 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()
+ try:
+ req.sk.write(data)
+ req.sk.flush()
+ except IOError:
+ raise closed()
+
+ def startreq(status, headers, exc_info = None):
+ if resp:
+ if exc_info: # Interesting, this...
+ try:
+ if respsent:
+ raise exc_info[0], exc_info[1], exc_info[2]
+ finally:
+ exc_info = None # CPython GC bug?
+ else:
+ raise Exception, "Can only start responding once."
+ resp[:] = status, headers
+ return write
+
+ respiter = handler(env, startreq)
+ try:
+ 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:
+ 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()
+
+def handle(req):
+ reqthread(req).start()
+
+ashd.util.serveloop(handle)
Dolda2000 GitWeb / ashd.git / blobdiff