1 # Manifold API Python interface
4 from myslice.config import Config
6 from manifoldresult import ManifoldResult, ManifoldCode
13 def __init__(self, auth=None, cainfo=None):
21 self.multicall = False
22 self.url = config.manifold_url
23 self.server = xmlrpclib.Server(self.url, verbose=False, allow_none=True)
25 def __repr__ (self): return "ManifoldAPI[%s]"%self.url
27 # xxx temporary code for scaffolding a ManifolResult on top of an API that does not expose error info
28 # as of march 2013 we work with an API that essentially either returns the value, or raises
29 # an xmlrpclib.Fault exception with always the same 8002 code
30 # since most of the time we're getting this kind of issues for expired sessions
31 # (looks like sessions are rather short-lived), for now the choice is to map these errors on
32 # a SESSION_EXPIRED code
33 def __getattr__(self, methodName):
34 def func(*args, **kwds):
36 print "entering ManifoldAPI.%s"%methodName,
40 result=getattr(self.server, methodName)(self.auth, *args, **kwds)
42 print '===> backend call',methodName, self.auth, self.url,'->',
43 if not result: print "[no/empty result]"
44 elif isinstance (result,str): print "result is '%s'"%result
45 elif isinstance (result,list): print "result is a %d-elts list"%len(result)
46 else: print "[dont know how to display result]"
47 return ManifoldResult (code=ManifoldCode.SUCCESS, value=result)
48 except xmlrpclib.Fault, error:
49 ### xxx this is very rough for now
50 # until we have some agreement about how the API calls should return error conditions
51 # in some less unpolite way than this anoanymous exception, we assume it's a problem with the session
52 # that needs to be refreshed
53 if debug: print "Session Expired"
54 if error.faultCode == 8002:
55 reason="most likely your session has expired"
56 reason += " (the manifold API has no unambiguous error reporting mechanism yet)"
57 return ManifoldResult (code=ManifoldCode.SESSION_EXPIRED, output=reason)
58 except Exception,error:
59 print "ManifoldAPI: unexpected exception",error
60 return ManifoldResult (code=ManifoldResult.UNKNOWN_ERROR, output="%s"%error)
63 def send_manifold_query (self, manifold_query):
64 (action,subject)= (manifold_query.action,manifold_query.subject)
66 # use self.Get rather than self.server.Get so we catch exceptions as per __getattr__
67 return self.Get(subject, manifold_query.filters, {}, manifold_query.fields)
70 print "WARNING: ManifoldAPI.send_manifold_query: only 'get' implemented for now"