functions, you may want to use the getmod() function in this module.
"""
-import os, threading, types
+import sys, os, threading, types, logging, getopt
import wsgiutil
__all__ = ["application", "wmain", "getmod", "cachedmod", "chain"]
+log = logging.getLogger("wsgidir")
+
class cachedmod(object):
"""Cache entry for modules loaded by getmod()
finally:
entry[0].release()
+def importlocal(filename):
+ import inspect
+ cf = inspect.currentframe()
+ if cf is None: raise ImportError("could not get current frame")
+ if cf.f_back is None: raise ImportError("could not get caller frame")
+ cfile = cf.f_back.f_code.co_filename
+ if not os.path.exists(cfile):
+ raise ImportError("caller is not in a proper file")
+ path = os.path.realpath(os.path.join(os.path.dirname(cfile), filename))
+ if '.' not in os.path.basename(path):
+ for ext in [".pyl", ".py"]:
+ if os.path.exists(path + ext):
+ path += ext
+ break
+ else:
+ raise ImportError("could not resolve file: " + filename)
+ else:
+ if not os.path.exists(cfile):
+ raise ImportError("no such file: " + filename)
+ return getmod(path).mod
+
class handler(object):
def __init__(self):
self.lock = threading.Lock()
def handle(self, env, startreq):
if not "SCRIPT_FILENAME" in env:
+ log.error("wsgidir called without SCRIPT_FILENAME set")
return wsgiutil.simpleerror(env, startreq, 500, "Internal Error", "The server is erroneously configured.")
path = env["SCRIPT_FILENAME"]
if not os.access(path, os.R_OK):
+ log.error("%s: not readable" % path)
return wsgiutil.simpleerror(env, startreq, 500, "Internal Error", "The server is erroneously configured.")
if "HTTP_X_ASH_PYTHON_HANDLER" in env:
- handler = self.resolve(env["HTTP_X_ASH_PYTHON_HANDLER"])
+ try:
+ handler = self.resolve(env["HTTP_X_ASH_PYTHON_HANDLER"])
+ except Exception:
+ log.error("could not load handler %s" % env["HTTP_X_ASH_PYTHON_HANDLER"], exc_info=sys.exc_info())
+ return wsgiutil.simpleerror(env, startreq, 500, "Internal Error", "The server is erroneously configured.")
else:
base = os.path.basename(path)
p = base.rfind('.')
if p < 0:
+ log.error("wsgidir called with neither X-Ash-Python-Handler nor a file extension: %s" % path)
return wsgiutil.simpleerror(env, startreq, 500, "Internal Error", "The server is erroneously configured.")
ext = base[p + 1:]
if not ext in self.exts:
+ log.error("unregistered file extension: %s" % ext)
return wsgiutil.simpleerror(env, startreq, 500, "Internal Error", "The server is erroneously configured.")
handler = self.exts[ext]
return handler(env, startreq)
Returns the `application' function. If any arguments are given,
they are parsed according to the module documentation.
"""
- ret = handler()
- for arg in argv:
+ hnd = handler()
+ ret = hnd.handle
+
+ opts, args = getopt.getopt(argv, "V")
+ for o, a in opts:
+ if o == "-V":
+ import wsgiref.validate
+ ret = wsgiref.validate.validator(ret)
+
+ for arg in args:
if arg[0] == '.':
p = arg.index('=')
- ret.addext(arg[1:p], arg[p + 1:])
- return ret.handle
+ hnd.addext(arg[1:p], arg[p + 1:])
+ return ret
def chain(env, startreq):
"""Chain-loading WSGI handler
object.
"""
path = env["SCRIPT_FILENAME"]
- mod = getmod(path)
+ try:
+ mod = getmod(path)
+ except Exception:
+ log.error("Exception occurred when loading %s" % path, exc_info=sys.exc_info())
+ return wsgiutil.simpleerror(env, startreq, 500, "Internal Error", "Could not load WSGI handler.")
entry = None
if mod is not None:
mod.lock.acquire()