X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=manifold%2Fmanifoldapi.py;h=eea606e3bfd56d740538e95bfab640614745f6b0;hb=7b369897171d7d8bf3b30bf6d8200813b3e142e0;hp=e482c2dc3eff73f7394d2edd4f93264aa3c47c01;hpb=40978b1456a978c7ea8e61ab9f72f368c7b9d53d;p=myslice.git diff --git a/manifold/manifoldapi.py b/manifold/manifoldapi.py index e482c2dc..eea606e3 100644 --- a/manifold/manifoldapi.py +++ b/manifold/manifoldapi.py @@ -1,43 +1,137 @@ # Manifold API Python interface -import xmlrpclib +import copy, xmlrpclib 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 +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): + def __init__(self, auth=None, cainfo=None): + + self.auth = auth + self.cainfo = cainfo + self.errors = [] + self.trace = [] + self.calls = {} + self.multicall = False + config = Config() + self.url = config.manifold_url() + self.server = xmlrpclib.Server(self.url, verbose=False, allow_none=True) - 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 __getattr__(self, methodName): - def func(*args, **kwds): - result=getattr(self.server, methodName)(self.auth, *args, **kwds) - ### debug - 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 - - def send_manifold_query (self, manifold_query): - (action,method)= (manifold_query.action,manifold_query.method) - if action=='get': - return self.server.Get(self.auth, method, manifold_query.filters, {}, manifold_query.fields) - # xxx... - else: - print "WARNING: ManifoldAPI.send_manifold_query: only 'get' implemented for now" + 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 + + # 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): + # how to display a call + def repr (): + # most of the time, we run 'forward' + if methodName=='forward': + try: action="forward(%s)"%args[0]['action'] + except: action="forward(??)" + else: action=methodName + return action + try: + if debug: + print "====> ManifoldAPI.%s"%repr(),"url",self.url + # No password in the logs + logAuth = copy.copy(self.auth) + if 'AuthString' in logAuth: + logAuth['AuthString']="XXX" + print "=> auth",logAuth + 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) + print '<==== backend call %s returned'%(repr()), + + return ResultValue(**result) + + except Exception,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 _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)