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import logging
log = logging.getLogger(__name__)
from turbogears import controllers, expose, flash, identity, redirect, error_handler,validate
from func.overlord.client import Overlord, Minions
from funcweb.widget_automation import WidgetListFactory,RemoteFormAutomation,RemoteFormFactory
from funcweb.widget_validation import WidgetSchemaFactory
# it is assigned into method_display on every request
global_form = None
def validate_decorator_updater(validator_value=None):
"""
When we pass the global_form directly to
turbogears.validate it is not updated on
every request we should pass a callable
to trigger it ;)
@param :validator_value : Does nothing in the code
of validate it is passed but is irrelevant in our case
because we compute the global_form in the method_display
@return : the current form and schema to validate the
current input in cherrypy's request
"""
global global_form
return global_form
class Root(controllers.RootController):
#will be reused for widget validation
@expose(template="funcweb.templates.minions")
#@identity.require(identity.not_anonymous())
def minions(self, glob='*'):
""" Return a list of our minions that match a given glob """
return dict(minions=Minions(glob).get_all_hosts())
index = minions # start with our minion view, for now
@expose(template="funcweb.templates.minion")
#@identity.require(identity.not_anonymous())
def minion(self, name="*", module=None, method=None):
""" Display module or method details for a specific minion.
If only the minion name is given, it will display a list of modules
for that minion. If a module is supplied, it will display a list of
methods. If a method is supplied, it will display a method execution
form.
"""
fc = Overlord(name)
if not module: # list all modules
#just list those who have get_method_args
modules = fc.system.list_modules()
display_modules = []
#FIXME slow really i know !
for module in modules.itervalues():
for mod in module:
#if it is not empty
if getattr(fc,mod).get_method_args()[name]:
display_modules.append(mod)
modules = {}
modules[name]=display_modules
return dict(modules=modules)
else: # a module is specified
if method: # minion.module.method specified; bring up execution form
return dict(minion=name, module=module, method=method,
tg_template="funcweb.templates.method")
else: # return a list of methods for specified module
modules = getattr(fc, module).list_methods()
return dict(modules=modules, module=module,
tg_template="funcweb.templates.module")
@expose(template="funcweb.templates.method_args")
#@identity.require(identity.not_anonymous())
def method_display(self,minion=None,module=None,method=None):
global global_form
fc = Overlord(minion)
method_args = getattr(fc,module).get_method_args()
if not method_args.values():
print "Not registered method here"
return dict(minion_form = None,minion=minion,module=module,method=method)
minion_arguments = method_args[minion][method]['args']
if minion_arguments:
wlist_object = WidgetListFactory(minion_arguments,minion=minion,module=module,method=method)
wlist_object = wlist_object.get_widgetlist_object()
#create the validation parts for the remote form
wf = WidgetSchemaFactory(minion_arguments)
schema_man=wf.get_ready_schema()
#create the final form
minion_form = RemoteFormAutomation(wlist_object,schema_man)
global_form = minion_form.for_widget
#print global_form
#i use that when something goes wrong to check the problem better to stay here ;)
#self.minion_form =RemoteFormFactory(wlist_object,schema_man).get_remote_form()
del wlist_object
del minion_arguments
return dict(minion_form =minion_form,minion=minion,module=module,method=method)
else:
return dict(minion_form = None,minion=minion,module=module,method=method)
@expose(template="funcweb.templates.login")
def login(self, forward_url=None, previous_url=None, *args, **kw):
from cherrypy import request, response
if not identity.current.anonymous \
and identity.was_login_attempted() \
and not identity.get_identity_errors():
raise redirect(forward_url)
forward_url=None
previous_url= request.path
if identity.was_login_attempted():
msg=_("The credentials you supplied were not correct or "
"did not grant access to this resource.")
elif identity.get_identity_errors():
msg=_("You must provide your credentials before accessing "
"this resource.")
else:
msg=_("Please log in.")
forward_url= request.headers.get("Referer", "/")
response.status=403
return dict(message=msg, previous_url=previous_url, logging_in=True,
original_parameters=request.params,
forward_url=forward_url)
@expose()
def handle_minion_error(self,tg_errors=None):
"""
The method checks the result from turbogears.validate
decorator so if it has the tg_errors we know that the
form validation is failed. That prevents the extra traffic
to be sent to the minions!
"""
if tg_errors:
#print tg_errors
return str(tg_errors)
@expose(allow_json=True)
@error_handler(handle_minion_error)
@validate(form=validate_decorator_updater)
def post_form(self,**kw):
"""
Data processing part
"""
if kw.has_key('minion') and kw.has_key('module') and kw.has_key('method'):
#assign them because we need the rest so dont control everytime
#and dont make lookup everytime ...
minion = kw['minion']
del kw['minion']
module = kw['module']
del kw['module']
method = kw['method']
del kw['method']
#everytime we do that should be a clever way for that ???
fc = Overlord(minion)
#get again the method args to get their order :
arguments=getattr(fc,module).get_method_args()
#so we know the order just allocate and put them there
cmd_args=['']*(len(kw.keys()))
for arg in kw.keys():
#wow what a lookup :)
index_of_arg = arguments[minion][method]['args'][arg]['order']
cmd_args[index_of_arg]=kw[arg]
#now execute the stuff
result = getattr(getattr(fc,module),method)(*cmd_args)
return str(result)
else:
return "Missing arguments sorry can not proceess the form"
@expose(template="funcweb.templates.method_args")
def execute_link(self,minion=None,module=None,method=None):
"""
Method is fot those minion methods that dont accept any
arguments so they provide only some information,executed
by pressing only the link !
"""
fc = Overlord(minion)
result = getattr(getattr(fc,module),method)()
return str(result)
@expose()
def logout(self):
identity.current.logout()
raise redirect("/")
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