from myslice.config import Config
+from manifoldresult import ManifoldResult, ManifoldCode, ManifoldException
+
+debug=False
debug=True
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
- self.proxy = xmlrpclib.Server(self.url, verbose=False, allow_none=True)
-
- def __getattr__(self, methodName):
- def func(*args, **kwds):
- result=getattr(self.proxy, methodName)(self.auth, *args, **kwds)
- ### debug
+ 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
+ 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)
+ else: print "[dont know how to display 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:
+ if debug: print "====> ManifoldAPI.%s"%methodName,"args",args,"kwds",kwds
+ result=getattr(self.server, methodName)(self.auth, *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)
+ ### attempt to cope with old APIs and new APIs
+ if isinstance (result, dict) and 'code' in result:
+ if debug: print "taken as new API"
+ # this sounds like a result from a new API
+ # minimal treatment is required, but we do want to turn this into a
+ # class instance
+ if result['code'] != 2: # in the manifold world, this can be either
+ # 0 (ok) 1 (partial result) or 2 which means error
+ if debug: print "OK (new API)"
+ return ManifoldResult(code=result['code'], value=result['value'])
+ else:
+ if debug: print "KO (new API) - raising ManifoldException"
+ raise ManifoldException(ManifoldResult(code=result['code'], output=result['description']))
+ else:
+ if debug: print "taken as old API"
+ # we're talking to an old API
+ # so if we make it here it should mean success
+ return ManifoldResult (code=ManifoldCode.SUCCESS, value=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 anonymous exception, we assume it's a problem with the session
+ # that needs to be refreshed
+ if error.faultCode == 8002:
+ if debug: print "KO (old API - 8002) - raising ManifoldException"
+ reason="most likely your session has expired"
+ reason += " (the manifold API has no unambiguous error reporting mechanism yet)"
+ raise ManifoldException ( ManifoldResult (code=ManifoldCode.SESSION_EXPIRED, output=reason))
+ else:
+ if debug: print "KO (old API - other) - raising ManifoldException"
+ reason="xmlrpclib.Fault with faultCode = %s (not taken as session expired)"%error.faultCode
+ raise ManifoldException ( ManifoldResult (code=ManifoldCode.UNKNOWN_ERROR, output=reason))
+ except Exception,error:
+ if debug: print "KO (unexpected exception)",error
+ raise ManifoldException ( ManifoldResult (code=ManifoldCode.UNKNOWN_ERROR, output="%s"%error) )
+ return func
+
+ def send_manifold_query (self, query):
+ # We use a dictionary representation of the query for forwarding it to the API
+ ret = self.forward(query.to_dict())
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
- return func
-
- # 4amine : xxx
- def send_manifold_query (self, manifold_query):
- (action,method)= (manifold_query.action,manifold_query.method)
- if action=='get':
- return self.proxy.Get(self.auth, method, manifold_query.filters, {}, manifold_query.fields)
- # xxx...
- elif action=='others':
- return None
-
-
+ print "="*80
+ print "Result:"
+ print ret
+ print "="*80
+ return ret
git://git.onelab.eu / myslice.git / blobdiff