# Manifold API Python interface
-import xmlrpclib
+import copy, xmlrpclib
-from myslice.config import Config
+from myslice.configengine import ConfigEngine
-from manifoldresult import ManifoldResult, ManifoldCode
+from django.contrib import messages
+from manifoldresult import ManifoldResult, ManifoldCode, ManifoldException
+from manifold.core.result_value import ResultValue
debug=False
debug=True
+debug_deep=False
+#debug_deep=True
+
+########## ugly stuff for hopefully nicer debug messages
+def mytruncate (obj, l):
+ # we will add '..'
+ l1=l-2
+ repr="%s"%obj
+ return (repr[:l1]+'..') if len(repr)>l1 else repr
+
+from time import time, gmtime, strftime
+from math import trunc
+def mytime (start=None):
+ gm=gmtime()
+ t=time()
+ msg=strftime("%H:%M:%S-", gmtime())+"%03d"%((t-trunc(t))*1000)
+ if start is not None: msg += " (%03fs)"%(t-start)
+ return t,msg
+##########
class ManifoldAPI:
- def __init__(self, auth=None, cainfo=None):
+ 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.url = ConfigEngine().manifold_url()
self.server = xmlrpclib.Server(self.url, verbose=False, allow_none=True)
def __repr__ (self): return "ManifoldAPI[%s]"%self.url
+ def _print_value (self, value):
+ print "+++",'value',
+ if isinstance (value,list): print "[%d]"%len(value),
+ elif isinstance (value,dict): print "{%d}"%len(value),
+ print mytruncate (value,80)
+
+ # 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
+ if k=='value': self._print_value(v)
+ else: print '+++',k,':',mytruncate (v,30)
+ else: print "[dont know how to display result] %s"%result
+
+ # how to display a call
+ def _repr_query (self,methodName, query):
+ try: action=query['action']
+ except: action="???"
+ try: subject=query['object']
+ except: subject="???"
+ # most of the time, we run 'forward'
+ if methodName=='forward': return "forward(%s(%s))"%(action,subject)
+ else: return "%s(%s)"%(action,subject)
+
# 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
# a SESSION_EXPIRED code
def __getattr__(self, methodName):
def func(*args, **kwds):
- if (debug):
- print "entering ManifoldAPI.%s"%methodName,
- print "args",args,
- print "kwds",kwds
+ # shorthand
+ def repr(): return self._repr_query (methodName, args[0])
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 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 debug: print "Session Expired"
- if error.faultCode == 8002:
- reason="most likely your session has expired"
- reason += " (the manifold API has no unambiguous error reporting mechanism yet)"
- return ManifoldResult (code=ManifoldCode.SESSION_EXPIRED, output=reason)
+ start,msg = mytime()
+ print "====>",msg,"ManifoldAPI.%s"%repr(),"url",self.url
+ # No password in the logs
+ logAuth = copy.copy(self.auth)
+ for obfuscate in ['Authring','session']:
+ if obfuscate in logAuth: logAuth[obfuscate]="XXX"
+ if debug_deep: print "=> auth",logAuth
+ if debug_deep: print "=> args",args,"kwds",kwds
+ annotations = {
+ 'authentication': self.auth
+ }
+ args += (annotations,)
+ result=getattr(self.server, methodName)(*args, **kwds)
+ print "%s%r" %(methodName, args)
+
+ if debug:
+ print '<= result=',
+ self._print_result(result)
+ end,msg = mytime(start)
+ print "<====",msg,"backend call %s returned"%(repr())
+
+ return ResultValue(**result)
+
except Exception,error:
- print "ManifoldAPI: unexpected exception",error
- return ManifoldResult (code=ManifoldResult.UNKNOWN_ERROR, output="%s"%error)
+ print "** MANIFOLD API ERROR **"
+ if debug:
+ print "===== xmlrpc catch-all exception:",error
+ import traceback
+ traceback.print_exc(limit=3)
+ 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"%repr()
+ raise ManifoldException ( ManifoldResult (code=ManifoldCode.SERVER_UNREACHABLE, output="%s"%error) )
+
return func
- def send_manifold_query (self, query):
- (action,subject)= (query.action,query.subject)
- # use e.g. self.Get rather than self.server.Get so we catch exceptions as per __getattr__
- if action=='get':
-# this makes the backend to squeak and one can't login anymore...
-# return self.Get(subject, query.filters, query.timestamp, query.fields)
- return self.Get(subject, query.filters, {}, query.fields)
- if action=='update':
- return self.Update(subject, query.filters, query.params, query.fields)
- else:
- warning="WARNING: ManifoldAPI.send_manifold_query: %s not implemented for now"%action
- print warning
- return ManifoldResult(code=ManifoldCode.NOT_IMPLEMENTED, output=warning)
+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:
+ # this is gross; at the very least we need to logout()
+ # but most importantly there is a need to refine that test, since
+ # code==2 does not necessarily mean an expired session
+ # XXX only if we know it is the issue
+ del request.session['manifold']
+ # Flush django session
+ request.session.flush()
+ #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']:
+ request.session.flush()
+ 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):
+ admin_user, admin_password = ConfigEngine().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