X-Git-Url: http://git.onelab.eu/?p=myslice.git;a=blobdiff_plain;f=manifold%2Fmanifoldapi.py;h=b1a1a0cc10c1c2ad5e16747a416edb5b8411c286;hp=ef7e45729544212276ccd61a46133ff6e59b32e8;hb=20e712f9703d8b2eaf226fdf8807315edcea6a9a;hpb=d8f20800f3709f4958493d2e1e1f8a8a98b0e29a diff --git a/manifold/manifoldapi.py b/manifold/manifoldapi.py index ef7e4572..b1a1a0cc 100644 --- a/manifold/manifoldapi.py +++ b/manifold/manifoldapi.py @@ -1,29 +1,78 @@ # 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 @@ -32,44 +81,82 @@ class ManifoldAPI: # 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)