mirror of
https://github.com/evilhero/mylar
synced 2024-12-25 17:16:51 +00:00
279 lines
10 KiB
Python
Executable file
279 lines
10 KiB
Python
Executable file
"""CherryPy Application and Tree objects."""
|
|
|
|
import os
|
|
import cherrypy
|
|
from cherrypy._cpcompat import ntou
|
|
from cherrypy import _cpconfig, _cplogging, _cprequest, _cpwsgi, tools
|
|
from cherrypy.lib import httputil
|
|
|
|
|
|
class Application(object):
|
|
"""A CherryPy Application.
|
|
|
|
Servers and gateways should not instantiate Request objects directly.
|
|
Instead, they should ask an Application object for a request object.
|
|
|
|
An instance of this class may also be used as a WSGI callable
|
|
(WSGI application object) for itself.
|
|
"""
|
|
|
|
root = None
|
|
"""The top-most container of page handlers for this app. Handlers should
|
|
be arranged in a hierarchy of attributes, matching the expected URI
|
|
hierarchy; the default dispatcher then searches this hierarchy for a
|
|
matching handler. When using a dispatcher other than the default,
|
|
this value may be None."""
|
|
|
|
config = {}
|
|
"""A dict of {path: pathconf} pairs, where 'pathconf' is itself a dict
|
|
of {key: value} pairs."""
|
|
|
|
namespaces = _cpconfig.NamespaceSet()
|
|
toolboxes = {'tools': cherrypy.tools}
|
|
|
|
log = None
|
|
"""A LogManager instance. See _cplogging."""
|
|
|
|
wsgiapp = None
|
|
"""A CPWSGIApp instance. See _cpwsgi."""
|
|
|
|
request_class = _cprequest.Request
|
|
response_class = _cprequest.Response
|
|
|
|
relative_urls = False
|
|
|
|
def __init__(self, root, script_name="", config=None):
|
|
self.log = _cplogging.LogManager(id(self), cherrypy.log.logger_root)
|
|
self.root = root
|
|
self.script_name = script_name
|
|
self.wsgiapp = _cpwsgi.CPWSGIApp(self)
|
|
|
|
self.namespaces = self.namespaces.copy()
|
|
self.namespaces["log"] = lambda k, v: setattr(self.log, k, v)
|
|
self.namespaces["wsgi"] = self.wsgiapp.namespace_handler
|
|
|
|
self.config = self.__class__.config.copy()
|
|
if config:
|
|
self.merge(config)
|
|
|
|
def __repr__(self):
|
|
return "%s.%s(%r, %r)" % (self.__module__, self.__class__.__name__,
|
|
self.root, self.script_name)
|
|
|
|
script_name_doc = """The URI "mount point" for this app. A mount point is that portion of
|
|
the URI which is constant for all URIs that are serviced by this
|
|
application; it does not include scheme, host, or proxy ("virtual host")
|
|
portions of the URI.
|
|
|
|
For example, if script_name is "/my/cool/app", then the URL
|
|
"http://www.example.com/my/cool/app/page1" might be handled by a
|
|
"page1" method on the root object.
|
|
|
|
The value of script_name MUST NOT end in a slash. If the script_name
|
|
refers to the root of the URI, it MUST be an empty string (not "/").
|
|
|
|
If script_name is explicitly set to None, then the script_name will be
|
|
provided for each call from request.wsgi_environ['SCRIPT_NAME'].
|
|
"""
|
|
def _get_script_name(self):
|
|
if self._script_name is None:
|
|
# None signals that the script name should be pulled from WSGI environ.
|
|
return cherrypy.serving.request.wsgi_environ['SCRIPT_NAME'].rstrip("/")
|
|
return self._script_name
|
|
def _set_script_name(self, value):
|
|
if value:
|
|
value = value.rstrip("/")
|
|
self._script_name = value
|
|
script_name = property(fget=_get_script_name, fset=_set_script_name,
|
|
doc=script_name_doc)
|
|
|
|
def merge(self, config):
|
|
"""Merge the given config into self.config."""
|
|
_cpconfig.merge(self.config, config)
|
|
|
|
# Handle namespaces specified in config.
|
|
self.namespaces(self.config.get("/", {}))
|
|
|
|
def find_config(self, path, key, default=None):
|
|
"""Return the most-specific value for key along path, or default."""
|
|
trail = path or "/"
|
|
while trail:
|
|
nodeconf = self.config.get(trail, {})
|
|
|
|
if key in nodeconf:
|
|
return nodeconf[key]
|
|
|
|
lastslash = trail.rfind("/")
|
|
if lastslash == -1:
|
|
break
|
|
elif lastslash == 0 and trail != "/":
|
|
trail = "/"
|
|
else:
|
|
trail = trail[:lastslash]
|
|
|
|
return default
|
|
|
|
def get_serving(self, local, remote, scheme, sproto):
|
|
"""Create and return a Request and Response object."""
|
|
req = self.request_class(local, remote, scheme, sproto)
|
|
req.app = self
|
|
|
|
for name, toolbox in self.toolboxes.items():
|
|
req.namespaces[name] = toolbox
|
|
|
|
resp = self.response_class()
|
|
cherrypy.serving.load(req, resp)
|
|
cherrypy.engine.timeout_monitor.acquire()
|
|
cherrypy.engine.publish('acquire_thread')
|
|
|
|
return req, resp
|
|
|
|
def release_serving(self):
|
|
"""Release the current serving (request and response)."""
|
|
req = cherrypy.serving.request
|
|
|
|
cherrypy.engine.timeout_monitor.release()
|
|
|
|
try:
|
|
req.close()
|
|
except:
|
|
cherrypy.log(traceback=True, severity=40)
|
|
|
|
cherrypy.serving.clear()
|
|
|
|
def __call__(self, environ, start_response):
|
|
return self.wsgiapp(environ, start_response)
|
|
|
|
|
|
class Tree(object):
|
|
"""A registry of CherryPy applications, mounted at diverse points.
|
|
|
|
An instance of this class may also be used as a WSGI callable
|
|
(WSGI application object), in which case it dispatches to all
|
|
mounted apps.
|
|
"""
|
|
|
|
apps = {}
|
|
"""
|
|
A dict of the form {script name: application}, where "script name"
|
|
is a string declaring the URI mount point (no trailing slash), and
|
|
"application" is an instance of cherrypy.Application (or an arbitrary
|
|
WSGI callable if you happen to be using a WSGI server)."""
|
|
|
|
def __init__(self):
|
|
self.apps = {}
|
|
|
|
def mount(self, root, script_name="", config=None):
|
|
"""Mount a new app from a root object, script_name, and config.
|
|
|
|
root
|
|
An instance of a "controller class" (a collection of page
|
|
handler methods) which represents the root of the application.
|
|
This may also be an Application instance, or None if using
|
|
a dispatcher other than the default.
|
|
|
|
script_name
|
|
A string containing the "mount point" of the application.
|
|
This should start with a slash, and be the path portion of the
|
|
URL at which to mount the given root. For example, if root.index()
|
|
will handle requests to "http://www.example.com:8080/dept/app1/",
|
|
then the script_name argument would be "/dept/app1".
|
|
|
|
It MUST NOT end in a slash. If the script_name refers to the
|
|
root of the URI, it MUST be an empty string (not "/").
|
|
|
|
config
|
|
A file or dict containing application config.
|
|
"""
|
|
if script_name is None:
|
|
raise TypeError(
|
|
"The 'script_name' argument may not be None. Application "
|
|
"objects may, however, possess a script_name of None (in "
|
|
"order to inpect the WSGI environ for SCRIPT_NAME upon each "
|
|
"request). You cannot mount such Applications on this Tree; "
|
|
"you must pass them to a WSGI server interface directly.")
|
|
|
|
# Next line both 1) strips trailing slash and 2) maps "/" -> "".
|
|
script_name = script_name.rstrip("/")
|
|
|
|
if isinstance(root, Application):
|
|
app = root
|
|
if script_name != "" and script_name != app.script_name:
|
|
raise ValueError("Cannot specify a different script name and "
|
|
"pass an Application instance to cherrypy.mount")
|
|
script_name = app.script_name
|
|
else:
|
|
app = Application(root, script_name)
|
|
|
|
# If mounted at "", add favicon.ico
|
|
if (script_name == "" and root is not None
|
|
and not hasattr(root, "favicon_ico")):
|
|
favicon = os.path.join(os.getcwd(), os.path.dirname(__file__),
|
|
"favicon.ico")
|
|
root.favicon_ico = tools.staticfile.handler(favicon)
|
|
|
|
if config:
|
|
app.merge(config)
|
|
|
|
self.apps[script_name] = app
|
|
|
|
return app
|
|
|
|
def graft(self, wsgi_callable, script_name=""):
|
|
"""Mount a wsgi callable at the given script_name."""
|
|
# Next line both 1) strips trailing slash and 2) maps "/" -> "".
|
|
script_name = script_name.rstrip("/")
|
|
self.apps[script_name] = wsgi_callable
|
|
|
|
def script_name(self, path=None):
|
|
"""The script_name of the app at the given path, or None.
|
|
|
|
If path is None, cherrypy.request is used.
|
|
"""
|
|
if path is None:
|
|
try:
|
|
request = cherrypy.serving.request
|
|
path = httputil.urljoin(request.script_name,
|
|
request.path_info)
|
|
except AttributeError:
|
|
return None
|
|
|
|
while True:
|
|
if path in self.apps:
|
|
return path
|
|
|
|
if path == "":
|
|
return None
|
|
|
|
# Move one node up the tree and try again.
|
|
path = path[:path.rfind("/")]
|
|
|
|
def __call__(self, environ, start_response):
|
|
# If you're calling this, then you're probably setting SCRIPT_NAME
|
|
# to '' (some WSGI servers always set SCRIPT_NAME to '').
|
|
# Try to look up the app using the full path.
|
|
env1x = environ
|
|
if environ.get(ntou('wsgi.version')) == (ntou('u'), 0):
|
|
env1x = _cpwsgi.downgrade_wsgi_ux_to_1x(environ)
|
|
path = httputil.urljoin(env1x.get('SCRIPT_NAME', ''),
|
|
env1x.get('PATH_INFO', ''))
|
|
sn = self.script_name(path or "/")
|
|
if sn is None:
|
|
start_response('404 Not Found', [])
|
|
return []
|
|
|
|
app = self.apps[sn]
|
|
|
|
# Correct the SCRIPT_NAME and PATH_INFO environ entries.
|
|
environ = environ.copy()
|
|
if environ.get(u'wsgi.version') == (u'u', 0):
|
|
# Python 2/WSGI u.0: all strings MUST be of type unicode
|
|
enc = environ[u'wsgi.url_encoding']
|
|
environ[u'SCRIPT_NAME'] = sn.decode(enc)
|
|
environ[u'PATH_INFO'] = path[len(sn.rstrip("/")):].decode(enc)
|
|
else:
|
|
# Python 2/WSGI 1.x: all strings MUST be of type str
|
|
environ['SCRIPT_NAME'] = sn
|
|
environ['PATH_INFO'] = path[len(sn.rstrip("/")):]
|
|
return app(environ, start_response)
|
|
|