from myslice.config import Config
+from django.contrib import messages
+from manifoldresult import ManifoldResult, ManifoldCode, ManifoldException
+from manifold.core.result_value import ResultValue
+
+debug=False
debug=True
-class SessionExpired (Exception):
- def __init__ (self,message):
- self.message=message
- def __repr__ (self):
- return "<SessionExpired: %s>"%self.message
+def mytruncate (obj, l):
+ # we will add '..'
+ l1=l-2
+ repr="%s"%obj
+ return (repr[:l1]+'..') if len(repr)>l1 else repr
class ManifoldAPI:
def __init__(self, auth=None, cainfo=None):
- config = Config()
self.auth = auth
self.cainfo = cainfo
self.errors = []
self.trace = []
self.calls = {}
self.multicall = False
- self.url = config.manifold_url
+ config = Config()
+ self.url = config.manifold_url()
self.server = xmlrpclib.Server(self.url, verbose=False, allow_none=True)
+ def __repr__ (self): return "ManifoldAPI[%s]"%self.url
+
+ # a one-liner to give a hint of what the return value looks like
+ def _print_result (self, result):
+ if not result: print "[no/empty result]"
+ elif isinstance (result,str): print "result is '%s'"%result
+ elif isinstance (result,list): print "result is a %d-elts list"%len(result)
+ elif isinstance (result,dict):
+ print "result is a dict with %d keys : %s"%(len(result),result.keys())
+ for (k,v) in result.iteritems():
+ if v is None: continue
+ print '+++',k,':',mytruncate (v,60)
+ else: print "[dont know how to display result] %s"%result
+
+ # xxx temporary code for scaffolding a ManifolResult on top of an API that does not expose error info
+ # as of march 2013 we work with an API that essentially either returns the value, or raises
+ # an xmlrpclib.Fault exception with always the same 8002 code
+ # since most of the time we're getting this kind of issues for expired sessions
+ # (looks like sessions are rather short-lived), for now the choice is to map these errors on
+ # a SESSION_EXPIRED code
def __getattr__(self, methodName):
def func(*args, **kwds):
try:
- result=getattr(self.server, methodName)(self.auth, *args, **kwds)
if debug:
- print '===> backend call',methodName, self.auth, self.url,'->',
- if not result: print "no/empty result"
- elif isinstance (result,str): print "result is '%s'"%result
- elif isinstance (result,list): print "result is a %d-elts list"%len(result)
- else: print "dont know how to display result"
- return result
- except xmlrpclib.Fault, error:
- ### xxx this is very rough for now
- # until we have some agreement about how the API calls should return error conditions
- # in some less unpolite way than this anoanymous exception, we assume it's a problem with the session
- # that needs to be refreshed
- if error.faultCode == 8002:
- reason="most likely your session has expired"
- reason += " (the manifold API has no unambiguous error reporting mechanism yet)"
- raise SessionExpired(reason)
+ print "====> ManifoldAPI.%s"%methodName,"url",self.url
+ print "=> auth",self.auth
+ print "=> args",args,"kwds",kwds
+ annotations = {
+ 'authentication': self.auth
+ }
+ args += (annotations,)
+ result=getattr(self.server, methodName)(*args, **kwds)
+ if debug:
+ print '<==== backend call %s(*%s,**%s) returned'%(methodName,args,kwds),
+ print '.ctd. Authmethod=',self.auth['AuthMethod'], self.url,'->',
+ self._print_result(result)
+ print '===== ManifoldAPI call done'
+
+ return ResultValue(**result)
+
except Exception,error:
- print "ManifoldAPI: unexpected exception",error
- raise
+ print "** MANIFOLD API ERROR **"
+ if "Connection refused" in error:
+ raise ManifoldException ( ManifoldResult (code=ManifoldCode.SERVER_UNREACHABLE,
+ output="%s answered %s"%(self.url,error)))
+ # otherwise
+ print "====> ERROR On ManifoldAPI.%s"%methodName,"auth",self.auth,"args",args,"kwds",kwds
+ import traceback
+ traceback.print_exc()
+ if debug: print "KO (unexpected exception)",error
+ print '===== ManifoldAPI call exiting'
+ raise ManifoldException ( ManifoldResult (code=ManifoldCode.UNKNOWN_ERROR, output="%s"%error) )
+
return func
- def send_manifold_query (self, manifold_query):
- (action,subject)= (manifold_query.action,manifold_query.subject)
- if action=='get':
- # use self.Get rather than self.server.Get so we catch exceptions as per __getattr__
- return self.Get(self.auth, subject, manifold_query.filters, {}, manifold_query.fields)
- # xxx...
- else:
- print "WARNING: ManifoldAPI.send_manifold_query: only 'get' implemented for now"
+def _execute_query(request, query, manifold_api_session_auth):
+ manifold_api = ManifoldAPI(auth=manifold_api_session_auth)
+ print "-"*80
+ print query
+ print query.to_dict()
+ print "-"*80
+ result = manifold_api.forward(query.to_dict())
+ if result['code'] == 2:
+ raise Exception, 'Error running query: %r' % result
+
+ if result['code'] == 1:
+ print "WARNING"
+ print result['description']
+
+ # XXX Handle errors
+ #Error running query: {'origin': [0, 'XMLRPCAPI'], 'code': 2, 'description': 'No such session: No row was found for one()', 'traceback': 'Traceback (most recent call last):\n File "/usr/local/lib/python2.7/dist-packages/manifold/core/xmlrpc_api.py", line 68, in xmlrpc_forward\n user = Auth(auth).check()\n File "/usr/local/lib/python2.7/dist-packages/manifold/auth/__init__.py", line 245, in check\n return self.auth_method.check()\n File "/usr/local/lib/python2.7/dist-packages/manifold/auth/__init__.py", line 95, in check\n raise AuthenticationFailure, "No such session: %s" % e\nAuthenticationFailure: No such session: No row was found for one()\n', 'type': 2, 'ts': None, 'value': None}
+
+ return result['value']
+
+def execute_query(request, query):
+ if not 'manifold' in request.session or not 'auth' in request.session['manifold']:
+ raise Exception, "User not authenticated"
+ manifold_api_session_auth = request.session['manifold']['auth']
+ return _execute_query(request, query, manifold_api_session_auth)
+
+def execute_admin_query(request, query):
+ config = Config()
+ admin_user, admin_password = config.manifold_admin_user_password()
+ admin_auth = {'AuthMethod': 'password', 'Username': admin_user, 'AuthString': admin_password}
+ return _execute_query(request, query, admin_auth)
git://git.onelab.eu / myslice.git / blobdiff