def send_error(cls, status=500, msg=None):
''' Return an error for the current request '''
if not msg:
if status == 404:
msg = "Page not found"
elif status == 500:
msg = "Server error"
else:
msg = "Unknown error"
Logger.error("HTTP %s%s" % (status, (": " + msg if msg else "")))
raise cherrypy.HTTPError(status, msg)
def wrapper(*kargs, **kwargs):
inst = f.im_self
name = f.__name__
is_render_view = (name is "render_view")
is_async = (hasattr(f, 'is_async') and f.is_async is True)
is_action = (is_render_view or is_async)
# Session recovery
try:
user_data = session.recover()
if user_data:
inst._session_recovery(inst, user_data[0], user_data[1])
except Exception, e:
Logger.error("Could not recover session", e)
def forward(cls, controller, action=None, params=None):
''' Forward the current request to the given action '''
action = action if action else "index"
controller_inst = cls.instances[controller]
if not controller_inst:
cls.send_error(404, "Controller %s does not exist" % controller)
try:
action_meth = getattr(controller_inst, action)
Logger.info("Forwarding to %s > %s with params = %s" % (controller, action, params))
return action_meth(**params)
except AttributeError:
cls.send_error(404, "%s/%s does not exist" % (controller, action))
except BaseException, e:
Logger.error("Error while forwarding to %s > %s" % (controller, action), e)
cls.send_error(500)
def _action_call_wrapper(f):
''' Monitor controller calls and performs some pre and post processing '''
def wrapper(*kargs, **kwargs):
inst = f.im_self
name = f.__name__
is_render_view = (name is "render_view")
is_async = (hasattr(f, 'is_async') and f.is_async is True)
is_action = (is_render_view or is_async)
# Session recovery
try:
user_data = session.recover()
if user_data:
inst._session_recovery(inst, user_data[0], user_data[1])
except Exception, e:
Logger.error("Could not recover session", e)
# Format arguments
formatted_kargs = format_http_args(kwargs)
# Execute method
start_time = time()
if is_action:
inst._before_action(name, **formatted_kargs)
if is_async:
res = _process_async_call(f, formatted_kargs)
else:
res = f(*kargs, **formatted_kargs)
inst._after_action(name, **formatted_kargs)
else:
res = f(*kargs, **formatted_kargs)
dt = round((time() - start_time) * 1000, 2)
if is_render_view:
Logger.debug("Rendered view %s in %s ms" % (kargs[0], dt))
elif is_async:
Logger.debug("Executed async call to %s in %s ms" % (name, dt))
return res
def redirect(cls, path, params=None):
''' Redirect the current request to the given path '''
url = BaseController._make_url(path, params)
Logger.info("Redirecting to %s" % url)
cherrypy.lib.cptools.redirect(url, False)
return res
ret_f = wrapper
ret_f.exposed = True
return ret_f
def _process_async_call(f, args):
''' Process an asynchronous action call and automatically format the response '''
try:
res = f(**args)
data = res if res is not None else {}
json_resp = format_async_response(data)
except cherrypy.HTTPError, e:
raise e
except Exception, e:
Logger.error("Error while processing call to %s" % f.__name__, e)
json_resp = format_async_response(None, False, e)
if Config.is_dev():
Logger.debug("Async response to %s: %s" % (f.__name__, json_resp))
return json_resp
## CONTROLLER #################################
class BaseController(object):
''' Base controller
Abstract base for all controllers.
Contains all sorts of helpers and structures that may be needed in controllers.
'''
instances = dict()