def __init__(self, project_path, project_name, appmod):
self.project_name=project_name
self.project_path=project_path
self._appmod=appmod
self._webregistry=WebRegistry(project_path)
self.webapp_project_path = os.path.join( project_path, "webapp" )
self.static_project_path = os.path.join( self.webapp_project_path, "static" )
self.script_project_path = os.path.join( self.static_project_path, "js" )
#iterating over objects and creating routers
self.update_registry()
#initialize handlers
self._handlers = []
self._handlers.append((r"/", MainRequestHandler))
self._handlers.append((r"/script/([A-Za-z0-9_]+)", ScriptRequestHandler))
self._handlers.append((r"/remote", RemoteRequestHandler))
self._handlers.append((r"/websocket", AppEventHandler))
self._handlers.append((r"/project_static/(.*)", tornado.web.StaticFileHandler, {"path":self.static_project_path}))
super(WebApplication,self).__init__(self._handlers,
cookie_secret=base64.b64encode(uuid.uuid4().bytes + uuid.uuid4().bytes))
self.appmod.auth_module.after_login_signal.connect(self.update_registry)
self.appmod.auth_module.after_logout_signal.connect(self.update_registry)
class WebApplication(tornado.web.Application):
"""Web application class is inherited from the standard tornado Application. WebApplication class initializes web registry, request handlers
and routers for remote method execution."""
def __init__(self, project_path, project_name, appmod):
self.project_name=project_name
self.project_path=project_path
self._appmod=appmod
self._webregistry=WebRegistry(project_path)
self.webapp_project_path = os.path.join( project_path, "webapp" )
self.static_project_path = os.path.join( self.webapp_project_path, "static" )
self.script_project_path = os.path.join( self.static_project_path, "js" )
#iterating over objects and creating routers
self.update_registry()
#initialize handlers
self._handlers = []
self._handlers.append((r"/", MainRequestHandler))
self._handlers.append((r"/script/([A-Za-z0-9_]+)", ScriptRequestHandler))
self._handlers.append((r"/remote", RemoteRequestHandler))
self._handlers.append((r"/websocket", AppEventHandler))
self._handlers.append((r"/project_static/(.*)", tornado.web.StaticFileHandler, {"path":self.static_project_path}))
super(WebApplication,self).__init__(self._handlers,
cookie_secret=base64.b64encode(uuid.uuid4().bytes + uuid.uuid4().bytes))
self.appmod.auth_module.after_login_signal.connect(self.update_registry)
self.appmod.auth_module.after_logout_signal.connect(self.update_registry)
def update_registry(self, *args, **kwargs):
"""This function updates a registry of web application. This registry contains information about class names, paths to js files
and routers. This update happens at initialization of web application and on
login or logout of user. In the latter case the web interface of application must be reconstructed according to user permissions.
"""
self._webregistry.clear()
self._webregistry.register(self._appmod)
for _, obj in self._appmod.iterate_commands(["view", "execute"]):
self._webregistry.register(obj)
for _, obj in self._appmod.iterate_devices ("view"):
self._webregistry.register(obj)
for _, obj in self._appmod.iterate_modules ("view"):
self._webregistry.register(obj)
def get_provider_code(self, url=r"/remote", timeout=0, namespace='Pyfrid.router'):
"""returns a javascript code of the direct reauest provider. This code is substituted to index.html template."""
actions={}
for name,inst in self._webregistry.iterrouters():
methods = []
for mname, mvalue in inspect.getmembers(inst):
if mname.startswith("_"): continue
if inspect.ismethod(mvalue):
args = inspect.getargspec(mvalue)[0]
if "handler" in args:
args.remove("self")
args.remove("handler")
arglen = len(args)
methods.append({"name":mname, "len":arglen})
actions[name]=methods
config = {
"type": "remoting",
"url": url,
"actions": actions
}
if timeout:
config["timeout"] = timeout
if namespace:
config["namespace"] = namespace
return config
def _process_request(self,handler,request):
return self._webregistry.get_router(request["action"], exc=True)(handler,request)
def process_remote_request(self,handler,request):
"""This function processes a remote request. It is invoked by the remote request handler."""
if type(request)!=ListType:
return json.dumps(self._process_request(handler,request))
else:
return json.dumps([self._process_request(handler,req) for req in request])
def get_script_info(self, name):
"""..."""
return self._webregistry.get_info(name, exc=True)
@property
def index_args(self):
"""..."""
return {
"css":self._webregistry.css,
"bases":self._webregistry.bases,
"scripts" :self._webregistry.scripts,
"provider_code":self.get_provider_code(),
"proj_name":self.project_name,
"appclass":self._appmod.__class__.__name__,
"appalias":self._appmod.alias
}
@property
def appmod(self):
"""..."""
return self._appmod