class PDP:
"""
PDP = Policy Decision Point.
Used to invoke policies and to take decision based on the polict results combination.
"""
#############################################################################
def __init__(self, VOExtension, granularity = None, name = None, status = None, formerStatus = None,
reason = None, siteType = None, serviceType = None, resourceType = None,
useNewRes = False):
"""
PDP (Policy Decision Point) initialization
:params:
:attr:`VOExtension`: string - VO extension (e.g. 'LHCb')
:attr:`granularity`: string - a ValidRes
:attr:`name`: string - name (e.g. of a site)
:attr:`status`: string - status
:attr:`formerStatus`: string - former status
:attr:`reason`: string - optional reason for last status change
:attr:`siteType`: string - optional site type
:attr:`serviceType`: string - optional service type
:attr:`resourceType`: string - optional resource type
"""
self.VOExtension = VOExtension
self.__granularity = assignOrRaise(granularity, ValidRes, InvalidRes, self, self.__init__)
self.__name = name
self.__status = assignOrRaise(status, ValidStatus, InvalidStatus, self, self.__init__)
self.__formerStatus = assignOrRaise(formerStatus, ValidStatus, InvalidStatus, self, self.__init__)
self.__reason = reason
self.__siteType = assignOrRaise(siteType, ValidSiteType, InvalidSiteType, self, self.__init__)
self.__serviceType = assignOrRaise(serviceType, ValidServiceType, InvalidServiceType, self, self.__init__)
self.__resourceType = assignOrRaise(resourceType, ValidResourceType, InvalidResourceType, self, self.__init__)
cc = CommandCaller()
self.pc = PolicyCaller(cc)
self.useNewRes = useNewRes
self.args = None
self.policy = None
self.knownInfo = None
self.ig = None
#############################################################################
def takeDecision(self, policyIn=None, argsIn=None, knownInfo=None):
""" PDP MAIN FUNCTION
decides policies that have to be applied, based on
__granularity,
__name,
__status,
__formerStatus
__reason
If more than one policy is evaluated, results are combined.
Logic for combination: a conservative approach is followed
(i.e. if a site should be banned for at least one policy, that's what is returned)
returns:
{ 'PolicyType': a policyType (in a string),
'Action': True|False,
'Status': 'Active'|'Probing'|'Banned',
'Reason': a reason
'EndDate: datetime.datetime (in a string)}
"""
self.args = argsIn
self.policy = policyIn
self.knownInfo = knownInfo
self.ig = InfoGetter(self.VOExtension)
EVAL = self.ig.getInfoToApply(('policy', 'policyType'),
granularity = self.__granularity,
status = self.__status,
formerStatus = self.__formerStatus,
siteType = self.__siteType,
serviceType = self.__serviceType,
resourceType = self.__resourceType,
useNewRes = self.useNewRes)
policyCombinedResultsList = []
for policyGroup in EVAL:
policyType = policyGroup['PolicyType']
if self.policy is not None:
# Only the policy provided will be evaluated
# FIXME: Check that the policies are valid.
singlePolicyResults = self.policy.evaluate()
else:
if policyGroup['Policies'] is None:
return {'SinglePolicyResults' : [],
'PolicyCombinedResult' : [{'PolicyType': policyType,
'Action': False,
'Reason':'No policy results'}]}
else:
singlePolicyResults = self._invocation(self.VOExtension, self.__granularity,
self.__name, self.__status, self.policy,
self.args, policyGroup['Policies'])
policyCombinedResults = self._policyCombination(singlePolicyResults)
if not policyCombinedResults:
return { 'SinglePolicyResults': singlePolicyResults,
'PolicyCombinedResult': [] }
#
# policy results communication
#
newstatus = policyCombinedResults['Status']
if newstatus != self.__status: # Policies satisfy
reason = policyCombinedResults['Reason']
newPolicyType = self.ig.getNewPolicyType(self.__granularity, newstatus)
for npt in newPolicyType:
if npt not in policyType:
policyType.append(npt)
decision = { 'PolicyType': policyType, 'Action': True, 'Status': newstatus, 'Reason': reason }
if policyCombinedResults.has_key('EndDate'):
decision['EndDate'] = policyCombinedResults['EndDate']
policyCombinedResultsList.append(decision)
else: # Policies does not satisfy
reason = policyCombinedResults['Reason']
decision = { 'PolicyType': policyType, 'Action': False, 'Reason': reason }
if policyCombinedResults.has_key('EndDate'):
decision['EndDate'] = policyCombinedResults['EndDate']
policyCombinedResultsList.append(decision)
res = { 'SinglePolicyResults' : singlePolicyResults,
'PolicyCombinedResult' : policyCombinedResultsList }
return res
#############################################################################
def _invocation(self, VOExtension, granularity, name, status, policy, args, policies):
""" One by one, use the PolicyCaller to invoke the policies, and putting
their results in `policyResults`. When the status is `Unknown`, invokes
`self.__useOldPolicyRes`.
"""
policyResults = []
for p in policies:
pName = p['Name']
pModule = p['Module']
extraArgs = p['args']
commandIn = p['commandIn']
res = self.pc.policyInvocation(VOExtension, granularity = granularity, name = name,
status = status, policy = policy, args = args, pName = pName,
pModule = pModule, extraArgs = extraArgs, commandIn = commandIn)
# If res is empty, return immediately
if not res: return policyResults
if not res.has_key('Status'):
print("\n\n Policy result " + str(res) + " does not return 'Status'\n\n")
raise TypeError
# Else
if res['Status'] == 'Unknown':
res = self.__useOldPolicyRes(name = name, policyName = pName)
if res['Status'] == 'NeedConfirmation':
pName = p['ConfirmationPolicy']
triggeredPolicy = self.ig.C_Policies[pName]
pModule = triggeredPolicy['module']
extraArgs = triggeredPolicy['args']
commandIn = triggeredPolicy['commandIn']
res = self.pc.policyInvocation(VOExtension, granularity = granularity, name = name,
status = status, policy = policy, args = args, pName = pName,
pModule = pModule, extraArgs = extraArgs, commandIn = commandIn)
if res['Status'] not in ('Error', 'Unknown', 'NeedConfirmation'):
policyResults.append(res)
return policyResults
#############################################################################
def _policyCombination(self, policies):
"""
* Compute a new status, and store it in variable newStatus, of type integer.
* Make a list of policies that have the worst result.
* Concatenate the Reason fields
* Take the first EndDate field that exists (FIXME: Do something more clever)
* Finally, return the result
"""
if policies == []: return {}
policies.sort(key=value_of_policy)
newStatus = -1 # First, set an always invalid status
try:
# We are in a special status, maybe forbidden transitions
prio, access_list, gofun = statesInfo[self.__status]
if access_list != set():
# Restrictions on transitions, checking if one is suitable:
for p in policies:
if value_of_policy(p) in access_list:
newStatus = value_of_policy(p)
break
# No status from policies suitable, applying stategy and
# returning result.
if newStatus == -1:
newStatus = gofun(access_list)
return { 'Status': status_of_value(newStatus), 'Reason': 'Status forced by PDP' }
else:
# Special Status, but no restriction on transitions
newStatus = value_of_policy(policies[0])
except KeyError:
# We are in a "normal" status: All transitions are possible.
newStatus = value_of_policy(policies[0])
# At this point, a new status has been chosen. newStatus is an
# integer.
worstPolicies = [p for p in policies if value_of_policy(p) == newStatus]
# Concatenate reasons
def getReason(p):
try:
res = p['Reason']
except KeyError:
res = ''
return res
worstPoliciesReasons = [getReason(p) for p in worstPolicies]
def catRes(x, y):
if x and y : return x + ' |###| ' + y
elif x or y:
if x: return x
else: return y
else : return ''
concatenatedRes = reduce(catRes, worstPoliciesReasons, '')
# Handle EndDate
endDatePolicies = [p for p in worstPolicies if p.has_key('EndDate')]
# Building and returning result
res = {}
res['Status'] = status_of_value(newStatus)
if concatenatedRes != '': res['Reason'] = concatenatedRes
if endDatePolicies != []: res['EndDate'] = endDatePolicies[0]['EndDate']
return res
#############################################################################
def __useOldPolicyRes(self, name, policyName):
""" Use the RSS Service to get an old policy result.
If such result is older than 2 hours, it returns {'Status':'Unknown'}
"""
from DIRAC.Core.DISET.RPCClient import RPCClient
rsS = RPCClient("ResourceStatus/ResourceManagement")
res = rsS.getPolicyRes(name, policyName, True)
if not res['OK']:
raise RSSException, where(self, self.__useOldPolicyRes) + ' Could not get a policy result'
res = res['Value']
if res == []:
return {'Status':'Unknown'}
oldStatus = res[0]
oldReason = res[1]
lastCheckTime = res[2]
if ( lastCheckTime + datetime.timedelta(hours = 2) ) < datetime.datetime.utcnow():
return {'Status':'Unknown'}
result = {}
result['Status'] = oldStatus
result['Reason'] = oldReason
result['OLD'] = True
result['PolicyName'] = policyName
return result
class PDP:
"""
PDP = Policy Decision Point.
Used to invoke policies and to take decision based on the polict results combination.
"""
#############################################################################
def __init__(self,
VOExtension,
granularity=None,
name=None,
status=None,
formerStatus=None,
reason=None,
siteType=None,
serviceType=None,
resourceType=None,
useNewRes=False):
"""
PDP (Policy Decision Point) initialization
:params:
:attr:`VOExtension`: string - VO extension (e.g. 'LHCb')
:attr:`granularity`: string - a ValidRes
:attr:`name`: string - name (e.g. of a site)
:attr:`status`: string - status
:attr:`formerStatus`: string - former status
:attr:`reason`: string - optional reason for last status change
:attr:`siteType`: string - optional site type
:attr:`serviceType`: string - optional service type
:attr:`resourceType`: string - optional resource type
"""
self.VOExtension = VOExtension
self.__granularity = assignOrRaise(granularity, ValidRes, InvalidRes,
self, self.__init__)
self.__name = name
self.__status = assignOrRaise(status, ValidStatus, InvalidStatus, self,
self.__init__)
self.__formerStatus = assignOrRaise(formerStatus, ValidStatus,
InvalidStatus, self, self.__init__)
self.__reason = reason
self.__siteType = assignOrRaise(siteType, ValidSiteType,
InvalidSiteType, self, self.__init__)
self.__serviceType = assignOrRaise(serviceType, ValidServiceType,
InvalidServiceType, self,
self.__init__)
self.__resourceType = assignOrRaise(resourceType, ValidResourceType,
InvalidResourceType, self,
self.__init__)
cc = CommandCaller()
self.pc = PolicyCaller(cc)
self.useNewRes = useNewRes
self.args = None
self.policy = None
self.knownInfo = None
self.ig = None
#############################################################################
def takeDecision(self, policyIn=None, argsIn=None, knownInfo=None):
""" PDP MAIN FUNCTION
decides policies that have to be applied, based on
__granularity,
__name,
__status,
__formerStatus
__reason
If more than one policy is evaluated, results are combined.
Logic for combination: a conservative approach is followed
(i.e. if a site should be banned for at least one policy, that's what is returned)
returns:
{ 'PolicyType': a policyType (in a string),
'Action': True|False,
'Status': 'Active'|'Probing'|'Banned',
'Reason': a reason
'EndDate: datetime.datetime (in a string)}
"""
self.args = argsIn
self.policy = policyIn
self.knownInfo = knownInfo
self.ig = InfoGetter(self.VOExtension)
EVAL = self.ig.getInfoToApply(('policy', 'policyType'),
granularity=self.__granularity,
status=self.__status,
formerStatus=self.__formerStatus,
siteType=self.__siteType,
serviceType=self.__serviceType,
resourceType=self.__resourceType,
useNewRes=self.useNewRes)
for policyGroup in EVAL:
policyType = policyGroup['PolicyType']
if self.policy is not None:
# Only the policy provided will be evaluated
# FIXME: Check that the policies are valid.
singlePolicyResults = self.policy.evaluate()
else:
if policyGroup['Policies'] is None:
return {
'SinglePolicyResults': [],
'PolicyCombinedResult': {
'PolicyType': policyType,
'Action': False,
'Reason': 'No policy results'
}
}
else:
singlePolicyResults = self._invocation(
self.VOExtension, self.__granularity, self.__name,
self.__status, self.policy, self.args,
policyGroup['Policies'])
policyCombinedResults = self._policyCombination(
singlePolicyResults)
assert (type(policyCombinedResults) == dict)
if not policyCombinedResults:
return {
'SinglePolicyResults': singlePolicyResults,
'PolicyCombinedResult': {}
}
#
# policy results communication
#
newstatus = policyCombinedResults['Status']
if newstatus != self.__status: # Policies satisfy
reason = policyCombinedResults['Reason']
newPolicyType = self.ig.getNewPolicyType(
self.__granularity, newstatus)
for npt in newPolicyType:
if npt not in policyType:
policyType.append(npt)
decision = {
'PolicyType': policyType,
'Action': True,
'Status': newstatus,
'Reason': reason
}
if policyCombinedResults.has_key('EndDate'):
decision['EndDate'] = policyCombinedResults['EndDate']
else: # Policies does not satisfy
reason = policyCombinedResults['Reason']
decision = {
'PolicyType': policyType,
'Action': False,
'Reason': reason
}
if policyCombinedResults.has_key('EndDate'):
decision['EndDate'] = policyCombinedResults['EndDate']
res = {
'SinglePolicyResults': singlePolicyResults,
'PolicyCombinedResult': decision
}
assert (type(res) == dict)
return res
#############################################################################
def _invocation(self, VOExtension, granularity, name, status, policy, args,
policies):
""" One by one, use the PolicyCaller to invoke the policies, and putting
their results in `policyResults`. When the status is `Unknown`, invokes
`self.__useOldPolicyRes`.
"""
policyResults = []
for p in policies:
pName = p['Name']
pModule = p['Module']
extraArgs = p['args']
commandIn = p['commandIn']
res = self.pc.policyInvocation(VOExtension,
granularity=granularity,
name=name,
status=status,
policy=policy,
args=args,
pName=pName,
pModule=pModule,
extraArgs=extraArgs,
commandIn=commandIn)
# If res is empty, return immediately
if not res: return policyResults
if not res.has_key('Status'):
print("\n\n Policy result " + str(res) +
" does not return 'Status'\n\n")
raise TypeError
# Else
if res['Status'] == 'Unknown':
res = self.__useOldPolicyRes(name=name, policyName=pName)
if res['Status'] == 'NeedConfirmation':
pName = p['ConfirmationPolicy']
triggeredPolicy = self.ig.C_Policies[pName]
pModule = triggeredPolicy['module']
extraArgs = triggeredPolicy['args']
commandIn = triggeredPolicy['commandIn']
res = self.pc.policyInvocation(VOExtension,
granularity=granularity,
name=name,
status=status,
policy=policy,
args=args,
pName=pName,
pModule=pModule,
extraArgs=extraArgs,
commandIn=commandIn)
if res['Status'] not in ('Error', 'Unknown', 'NeedConfirmation'):
policyResults.append(res)
return policyResults
#############################################################################
def _policyCombination(self, pol_results):
"""
INPUT: list type
OUTPUT: dict type
* Compute a new status, and store it in variable newStatus, of type integer.
* Make a list of policies that have the worst result.
* Concatenate the Reason fields
* Take the first EndDate field that exists (FIXME: Do something more clever)
* Finally, return the result
"""
if pol_results == []: return {}
pol_results.sort(key=Status.value_of_policy)
newStatus = -1 # First, set an always invalid status
try:
# We are in a special status, maybe forbidden transitions
_prio, access_list, gofun = Status.statesInfo[self.__status]
if access_list != set():
# Restrictions on transitions, checking if one is suitable:
for p in pol_results:
if Status.value_of_policy(p) in access_list:
newStatus = Status.value_of_policy(p)
break
# No status from policies suitable, applying stategy and
# returning result.
if newStatus == -1:
newStatus = gofun(access_list)
return {
'Status': Status.status_of_value(newStatus),
'Reason': 'Status forced by PDP'
}
else:
# Special Status, but no restriction on transitions
newStatus = Status.value_of_policy(pol_results[0])
except KeyError:
# We are in a "normal" status: All transitions are possible.
newStatus = Status.value_of_policy(pol_results[0])
# At this point, a new status has been chosen. newStatus is an
# integer.
worstResults = [
p for p in pol_results if Status.value_of_policy(p) == newStatus
]
# Concatenate reasons
def getReason(p):
try:
res = p['Reason']
except KeyError:
res = ''
return res
worstResultsReasons = [getReason(p) for p in worstResults]
def catRes(x, y):
if x and y: return x + ' |###| ' + y
elif x or y:
if x: return x
else: return y
else: return ''
concatenatedRes = reduce(catRes, worstResultsReasons, '')
# Handle EndDate
endDatePolicies = [p for p in worstResults if p.has_key('EndDate')]
# Building and returning result
res = {}
res['Status'] = Status.status_of_value(newStatus)
if concatenatedRes != '': res['Reason'] = concatenatedRes
if endDatePolicies != []:
res['EndDate'] = endDatePolicies[0]['EndDate']
return res
#############################################################################
def __useOldPolicyRes(self, name, policyName):
""" Use the RSS Service to get an old policy result.
If such result is older than 2 hours, it returns {'Status':'Unknown'}
"""
from DIRAC.Core.DISET.RPCClient import RPCClient
rsS = RPCClient("ResourceStatus/ResourceManagement")
res = rsS.getPolicyRes(name, policyName, True)
if not res['OK']:
raise RSSException, where(
self,
self.__useOldPolicyRes) + ' Could not get a policy result'
res = res['Value']
if res == []:
return {'Status': 'Unknown'}
oldStatus = res[0]
oldReason = res[1]
lastCheckTime = res[2]
if (lastCheckTime +
datetime.timedelta(hours=2)) < datetime.datetime.utcnow():
return {'Status': 'Unknown'}
result = {}
result['Status'] = oldStatus
result['Reason'] = oldReason
result['OLD'] = True
result['PolicyName'] = policyName
return result
def testGetInfoToApply(self):
ig = InfoGetter('LHCb')
for g in ValidRes:
for s in ValidStatus:
for site_t in ValidSiteType:
for service_t in ValidServiceType:
if g in ('Site', 'Sites'):
panel = 'Site_Panel'
if g in ('Service', 'Services'):
if service_t == 'Storage':
panel = 'Service_Storage_Panel'
if service_t == 'Computing':
panel = 'Service_Computing_Panel'
if service_t == 'VO-BOX':
panel = 'Service_VO-BOX_Panel'
if service_t == 'VOMS':
panel = 'Service_VOMS_Panel'
if g in ('Resource', 'Resources'):
panel = 'Resource_Panel'
if g in ('StorageElementRead', 'StorageElementsRead'):
panel = 'SE_Panel'
if g in ('StorageElementWrite', 'StorageElementsWrite'):
panel = 'SE_Panel'
for resource_t in ValidResourceType:
res = ig.getInfoToApply(('policyType', ), g, s, None, site_t, service_t, resource_t)
for p_res in res[0]['PolicyType']:
self.assert_(p_res in ['Resource_PolType', 'Alarm_PolType', 'Alarm_PolType_SE'])
for useNewRes in (False, True):
res = ig.getInfoToApply(('policy', ), g, s, None, site_t, service_t, resource_t, useNewRes)
pModuleList = [None]
for k in self.configModule.Policies.keys():
try:
if self.configModule.Policies[k]['module'] not in pModuleList:
pModuleList.append(self.configModule.Policies[k]['module'])
except KeyError:
pass
for p_res in res[0]['Policies']:
self.assert_(p_res['Name'] in self.configModule.Policies.keys())
self.assert_(p_res['Module'] in pModuleList)
if useNewRes is False:
self.assertEqual(p_res['commandIn'], self.configModule.Policies[p_res['Name']]['commandIn'])
self.assertEqual(p_res['args'], self.configModule.Policies[p_res['Name']]['args'])
else:
try:
self.assertEqual(p_res['commandIn'], self.configModule.Policies[p_res['Name']]['commandInNewRes'])
except KeyError:
self.assertEqual(p_res['commandIn'], self.configModule.Policies[p_res['Name']]['commandIn'])
try:
self.assertEqual(p_res['args'], self.configModule.Policies[p_res['Name']]['argsNewRes'])
except KeyError:
self.assertEqual(p_res['args'], self.configModule.Policies[p_res['Name']]['args'])
res = ig.getInfoToApply(('panel_info', ), g, s, None, site_t, service_t, resource_t, useNewRes)
for p_res in res[0]['Info']:
# if 'JobsEfficiencySimple' in p_res.keys():
# print useNewRes, p_res
for p_name in p_res.keys():
self.assert_(p_name in self.configModule.Policies.keys())
if isinstance(p_res[p_name], list):
for i in range(len(p_res[p_name])):
for k in p_res[p_name][i].keys():
if useNewRes:
try:
self.assertEqual(p_res[p_name][i][k]['CommandIn'],
self.configModule.Policies[p_name][panel][i][k]['CommandInNewRes'])
except KeyError:
self.assertEqual(p_res[p_name][i][k]['CommandIn'],
self.configModule.Policies[p_name][panel][i][k]['CommandIn'])
except TypeError:
self.assertEqual(p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k])
try:
self.assertEqual(p_res[p_name][i][k]['args'],
self.configModule.Policies[p_name][panel][i][k]['argsNewRes'])
except KeyError:
self.assertEqual(p_res[p_name][i][k]['args'],
self.configModule.Policies[p_name][panel][i][k]['args'])
except TypeError:
self.assertEqual(p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k])
else:
try:
self.assertEqual(p_res[p_name][i][k]['CommandIn'],
self.configModule.Policies[p_name][panel][i][k]['CommandIn'])
except:
self.assertEqual(p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k])
try:
self.assertEqual(p_res[p_name][i][k]['args'],
self.configModule.Policies[p_name][panel][i][k]['args'])
except:
self.assertEqual(p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k])
else:
self.assertEqual(p_res[p_name], self.configModule.Policies[p_name][panel])
class Publisher:
"""
Class Publisher is in charge of getting dispersed information, to be published on the web.
"""
#############################################################################
def __init__(self, VOExtension, rsDBIn = None, commandCallerIn = None, infoGetterIn = None,
WMSAdminIn = None):
"""
Standard constructor
:params:
:attr:`VOExtension`: string, VO Extension (e.g. 'LHCb')
:attr:`rsDBIn`: optional ResourceStatusDB object
(see :class: `DIRAC.ResourceStatusSystem.DB.ResourceStatusDB.ResourceStatusDB`)
:attr:`commandCallerIn`: optional CommandCaller object
(see :class: `DIRAC.ResourceStatusSystem.Command.CommandCaller.CommandCaller`)
:attr:`infoGetterIn`: optional InfoGetter object
(see :class: `DIRAC.ResourceStatusSystem.Utilities.InfoGetter.InfoGetter`)
:attr:`WMSAdminIn`: optional RPCClient object for WMSAdmin
(see :class: `DIRAC.Core.DISET.RPCClient.RPCClient`)
"""
self.configModule = Utils.voimport("DIRAC.ResourceStatusSystem.Policy.Configurations", VOExtension)
if rsDBIn is not None:
self.rsDB = rsDBIn
else:
from DIRAC.ResourceStatusSystem.DB.ResourceStatusDB import ResourceStatusDB
self.rsDB = ResourceStatusDB()
from DIRAC.ResourceStatusSystem.DB.ResourceManagementDB import ResourceManagementDB
self.rmDB = ResourceManagementDB()
if commandCallerIn is not None:
self.cc = commandCallerIn
else:
from DIRAC.ResourceStatusSystem.Command.CommandCaller import CommandCaller
self.cc = CommandCaller()
if infoGetterIn is not None:
self.ig = infoGetterIn
else:
from DIRAC.ResourceStatusSystem.Utilities.InfoGetter import InfoGetter
self.ig = InfoGetter(VOExtension)
if WMSAdminIn is not None:
self.WMSAdmin = WMSAdminIn
else:
from DIRAC.Core.DISET.RPCClient import RPCClient
self.WMSAdmin = RPCClient("WorkloadManagement/WMSAdministrator")
self.threadPool = ThreadPool( 2, 5 )
self.lockObj = threading.RLock()
self.infoForPanel_res = {}
#############################################################################
def getInfo(self, granularity, name, useNewRes = False):
"""
Standard method to get all the info to be published
This method uses a ThreadPool (:class:`DIRAC.Core.Utilities.ThreadPool.ThreadPool`)
with 2-5 threads. The threaded method is
:meth:`DIRAC.ResourceStatusSystem.Utilities.Publisher.Publisher.getInfoForPanel`
:params:
:attr:`granularity`: string - a ValidRes
:attr:`name`: string - name of the Validres
:attr:`useNewRes`: boolean. When set to true, will get new results,
otherwise it will get cached results (where available).
"""
if granularity not in ValidRes:
raise InvalidRes, Utils.where(self, self.getInfo)
self.infoForPanel_res = {}
status = None
formerStatus = None
siteType = None
serviceType = None
resourceType = None
if granularity in ('Resource', 'Resources'):
try:
resourceType = self.rsDB.getMonitoredsList('Resource', ['ResourceType'],
resourceName = name)[0][0]
except IndexError:
return "%s does not exist!" %name
if granularity in ('StorageElement', 'StorageElements'):
try:
siteType = self.rsDB.getMonitoredsList('StorageElement', ['SiteType'],
storageElementName = name)[0][0]
except IndexError:
return "%s does not exist!" %name
paramNames = ['Type', 'Group', 'Name', 'Policy', 'DIRAC Status',
'RSS Status', 'Reason', 'Description']
infoToGet = self.ig.getInfoToApply(('view_info', ), granularity, status = status,
formerStatus = formerStatus, siteType = siteType,
serviceType = serviceType, resourceType = resourceType,
useNewRes = useNewRes)[0]['Panels']
infoToGet_res = {}
recordsList = []
infosForPolicy = {}
for panel in infoToGet.keys():
(granularityForPanel, nameForPanel) = self.__getNameForPanel(granularity, name, panel)
if not self._resExist(granularityForPanel, nameForPanel):
# completeInfoForPanel_res = None
continue
#take composite RSS result for name
nameStatus_res = self._getStatus(nameForPanel, panel)
recordBase = [None, None, None, None, None, None, None, None]
recordBase[1] = panel.replace('_Panel', '')
recordBase[2] = nameForPanel #nameForPanel
try:
recordBase[4] = nameStatus_res[nameForPanel]['DIRACStatus'] #DIRAC Status
except:
pass
recordBase[5] = nameStatus_res[nameForPanel]['RSSStatus'] #RSS Status
record = copy.deepcopy(recordBase)
record[0] = 'ResultsForResource'
recordsList.append(record)
#take info that goes into the panel
infoForPanel = infoToGet[panel]
for info in infoForPanel:
self.threadPool.generateJobAndQueueIt(self.getInfoForPanel,
args = (info, granularityForPanel, nameForPanel) )
self.threadPool.processAllResults()
for policy in [x.keys()[0] for x in infoForPanel]:
record = copy.deepcopy(recordBase)
record[0] = 'SpecificInformation'
record[3] = policy #policyName
record[4] = None #DIRAC Status
record[5] = self.infoForPanel_res[policy]['Status'] #RSS status for the policy
record[6] = self.infoForPanel_res[policy]['Reason'] #Reason
record[7] = self.infoForPanel_res[policy]['desc'] #Description
recordsList.append(record)
infosForPolicy[policy] = self.infoForPanel_res[policy]['infos']
infoToGet_res['TotalRecords'] = len(recordsList)
infoToGet_res['ParameterNames'] = paramNames
infoToGet_res['Records'] = recordsList
infoToGet_res['Extras'] = infosForPolicy
return infoToGet_res
#############################################################################
def getInfoForPanel(self, info, granularityForPanel, nameForPanel):
#get single RSS policy results
policyResToGet = info.keys()[0]
pol_res = self.rmDB.getPolicyRes(nameForPanel, policyResToGet)
if pol_res != []:
pol_res_dict = {'Status' : pol_res[0], 'Reason' : pol_res[1]}
else:
pol_res_dict = {'Status' : 'Unknown', 'Reason' : 'Unknown'}
self.lockObj.acquire()
try:
self.infoForPanel_res[policyResToGet] = pol_res_dict
finally:
self.lockObj.release()
#get policy description
desc = self._getPolicyDesc(policyResToGet)
#get other info
othersInfo = info.values()[0]
if not isinstance(othersInfo, list):
othersInfo = [othersInfo]
info_res = {}
for oi in othersInfo:
format_ = oi.keys()[0]
what = oi.values()[0]
info_bit_got = self._getInfo(granularityForPanel, nameForPanel, format_, what)
info_res[format_] = info_bit_got
self.lockObj.acquire()
try:
self.infoForPanel_res[policyResToGet]['infos'] = info_res
self.infoForPanel_res[policyResToGet]['desc'] = desc
finally:
self.lockObj.release()
#############################################################################
def _getStatus(self, name, panel):
#get RSS status
RSSStatus = self._getInfoFromRSSDB(name, panel)[0][1]
#get DIRAC status
if panel in ('Site_Panel', 'SE_Panel'):
if panel == 'Site_Panel':
DIRACStatus = self.WMSAdmin.getSiteMaskLogging(name)
if DIRACStatus['OK']:
DIRACStatus = DIRACStatus['Value'][name].pop()[0]
else:
raise RSSException, Utils.where(self, self._getStatus)
elif panel == 'SE_Panel':
ra = getStorageElementStatus(name, 'ReadAccess')['Value']
wa = getStorageElementStatus(name, 'WriteAccess')['Value']
DIRACStatus = {'ReadAccess': ra, 'WriteAccess': wa}
status = { name : { 'RSSStatus': RSSStatus, 'DIRACStatus': DIRACStatus } }
else:
status = { name : { 'RSSStatus': RSSStatus} }
return status
#############################################################################
def _getInfo(self, granularity, name, format_, what):
if format_ == 'RSS':
info_bit_got = self._getInfoFromRSSDB(name, what)
else:
if isinstance(what, dict):
command = what['CommandIn']
extraArgs = what['args']
else:
command = what
extraArgs = None
info_bit_got = self.cc.commandInvocation(granularity, name, None,
None, command, extraArgs)
try:
info_bit_got = info_bit_got['Result']
except:
pass
return info_bit_got
#############################################################################
def _getInfoFromRSSDB(self, name, what):
paramsL = ['Status']
siteName = None
serviceName = None
resourceName = None
storageElementName = None
serviceType = None
gridSiteName = None
if what == 'ServiceOfSite':
gran = 'Service'
paramsL.insert(0, 'ServiceName')
paramsL.append('Reason')
siteName = name
elif what == 'ResOfCompService':
gran = 'Resources'
paramsL.insert(0, 'ResourceName')
paramsL.append('Reason')
serviceType = name.split('@')[0]
gridSiteName = getGOCSiteName(name.split('@')[1])
if not gridSiteName['OK']:
raise RSSException, gridSiteName['Message']
gridSiteName = gridSiteName['Value']
elif what == 'ResOfStorService':
gran = 'Resources'
paramsL.insert(0, 'ResourceName')
paramsL.append('Reason')
serviceType = name.split('@')[0]
gridSiteName = getGOCSiteName(name.split('@')[1])
if not gridSiteName['OK']:
raise RSSException, gridSiteName['Message']
gridSiteName = gridSiteName['Value']
elif what == 'ResOfStorEl':
gran = 'StorageElements'
paramsL.insert(0, 'ResourceName')
paramsL.append('Reason')
storageElementName = name
elif what == 'StorageElementsOfSite':
gran = 'StorageElements'
paramsL.insert(0, 'StorageElementName')
paramsL.append('Reason')
if '@' in name:
DIRACsiteName = name.split('@').pop()
else:
DIRACsiteName = name
gridSiteName = getGOCSiteName(DIRACsiteName)
if not gridSiteName['OK']:
raise RSSException, gridSiteName['Message']
gridSiteName = gridSiteName['Value']
elif what == 'Site_Panel':
gran = 'Site'
paramsL.insert(0, 'SiteName')
siteName = name
elif what == 'Service_Computing_Panel':
gran = 'Service'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Service_Storage_Panel':
gran = 'Service'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Service_VO-BOX_Panel':
gran = 'Services'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Service_VOMS_Panel':
gran = 'Services'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Resource_Panel':
gran = 'Resource'
paramsL.insert(0, 'ResourceName')
resourceName = name
elif what == 'SE_Panel':
gran = 'StorageElement'
paramsL.insert(0, 'StorageElementName')
storageElementName = name
info_bit_got = self.rsDB.getMonitoredsList(gran, paramsList = paramsL, siteName = siteName,
serviceName = serviceName, serviceType = serviceType,
resourceName = resourceName,
storageElementName = storageElementName,
gridSiteName = gridSiteName)
return info_bit_got
#############################################################################
def _getPolicyDesc(self, policyName):
return self.configModule.Policies[policyName]['Description']
#############################################################################
def __getNameForPanel(self, granularity, name, panel):
if granularity in ('Site', 'Sites'):
if panel == 'Service_Computing_Panel':
granularity = 'Service'
name = 'Computing@' + name
elif panel == 'Service_Storage_Panel':
granularity = 'Service'
name = 'Storage@' + name
elif panel == 'OtherServices_Panel':
granularity = 'Service'
name = 'OtherS@' + name
elif panel == 'Service_VOMS_Panel':
granularity = 'Service'
name = 'VOMS@' + name
elif panel == 'Service_VO-BOX_Panel':
granularity = 'Service'
name = 'VO-BOX@' + name
# else:
# granularity = granularity
# name = name
# else:
# granularity = granularity
# name = name
return (granularity, name)
#############################################################################
def _resExist(self, granularity, name):
siteName = None
serviceName = None
resourceName = None
storageElementName = None
if granularity in ('Site', 'Sites'):
siteName = name
elif granularity in ('Service', 'Services'):
serviceName = name
elif granularity in ('Resource', 'Resources'):
resourceName = name
elif granularity in ('StorageElement', 'StorageElements'):
storageElementName = name
res = self.rsDB.getMonitoredsList(granularity, siteName = siteName,
serviceName = serviceName, resourceName = resourceName,
storageElementName = storageElementName)
if res == []:
return False
else:
return True
class PDP:
"""
The PDP (Policy Decision Point) module is used to:
1. Decides which policies have to be applied.
2. Invokes an evaluation of the policies, and returns the result (to a PEP)
"""
def __init__( self, **clients ):
'''
Constructor. Defines members that will be used later on.
'''
cc = CommandCaller()
self.clients = clients
self.pCaller = PolicyCaller( cc, **clients )
self.iGetter = InfoGetter()
self.__granularity = None
self.__name = None
self.__statusType = None
self.__status = None
self.__formerStatus = None
self.__reason = None
self.__siteType = None
self.__serviceType = None
self.__resourceType = None
self.__useNewRes = None
def setup( self, granularity = None, name = None, statusType = None,
status = None, formerStatus = None, reason = None, siteType = None,
serviceType = None, resourceType = None, useNewRes = False ):
"""
PDP (Policy Decision Point) initialization
:params:
:attr:`granularity`: string - a ValidElement
:attr:`name`: string - name (e.g. of a site)
:attr:`status`: string - status
:attr:`formerStatus`: string - former status
:attr:`reason`: string - optional reason for last status change
:attr:`siteType`: string - optional site type
:attr:`serviceType`: string - optional service type
:attr:`resourceType`: string - optional resource type
"""
self.__granularity = granularity
self.__name = name
self.__statusType = statusType
self.__status = status
self.__formerStatus = formerStatus
self.__reason = reason
self.__siteType = siteType
self.__serviceType = serviceType
self.__resourceType = resourceType
self.__useNewRes = useNewRes
################################################################################
def takeDecision( self, policyIn = None, argsIn = None, knownInfo = None ):
""" PDP MAIN FUNCTION
decides policies that have to be applied, based on
__granularity,
__name,
__status,
__formerStatus
__reason
If more than one policy is evaluated, results are combined.
Logic for combination: a conservative approach is followed
(i.e. if a site should be banned for at least one policy, that's what is returned)
returns:
{ 'PolicyType': a policyType (in a string),
'Action': True|False,
'Status': 'Active'|'Probing'|'Banned',
'Reason': a reason
'EndDate: datetime.datetime (in a string)}
"""
polToEval = self.iGetter.getInfoToApply( ( 'policy', 'policyType' ),
granularity = self.__granularity,
statusType = self.__statusType,
status = self.__status,
formerStatus = self.__formerStatus,
siteType = self.__siteType,
serviceType = self.__serviceType,
resourceType = self.__resourceType,
useNewRes = self.__useNewRes )
policyType = polToEval[ 'PolicyType' ] # type: generator
if policyIn:
# Only the policy provided will be evaluated
# FIXME: Check that the policies are valid.
singlePolicyResults = policyIn.evaluate()
else:
singlePolicyResults = self._invocation( self.__granularity,
self.__name, self.__status, policyIn,
argsIn, polToEval['Policies'] )
policyCombinedResults = self._policyCombination( singlePolicyResults )
if policyCombinedResults == {}:
policyCombinedResults[ 'Action' ] = False
policyCombinedResults[ 'Reason' ] = 'No policy results'
policyCombinedResults[ 'PolicyType' ] = policyType
if policyCombinedResults.has_key( 'Status' ):
newstatus = policyCombinedResults[ 'Status' ]
if newstatus != self.__status: # Policies satisfy
newPolicyType = self.iGetter.getNewPolicyType( self.__granularity, newstatus )
policyType = set( policyType ) & set( newPolicyType )
policyCombinedResults[ 'Action' ] = True
else: # Policies does not satisfy
policyCombinedResults[ 'Action' ] = False
policyCombinedResults[ 'PolicyType' ] = policyType
return { 'SinglePolicyResults' : singlePolicyResults,
'PolicyCombinedResult' : policyCombinedResults }
################################################################################
def _invocation( self, granularity, name, status, policy, args, policies ):
'''
One by one, use the PolicyCaller to invoke the policies, and putting
their results in `policyResults`. When the status is `Unknown`, invokes
`self.__useOldPolicyRes`. Always returns a list, possibly empty.
'''
policyResults = []
for pol in policies:
pName = pol[ 'Name' ]
pModule = pol[ 'Module' ]
extraArgs = pol[ 'args' ]
commandIn = pol[ 'commandIn' ]
res = self.pCaller.policyInvocation( granularity = granularity, name = name,
status = status, policy = policy,
args = args, pName = pName,
pModule = pModule, extraArgs = extraArgs,
commandIn = commandIn )
# If res is empty, return immediately
if not res:
return policyResults
if not res.has_key( 'Status' ):
print('\n\n Policy result ' + str(res) + ' does not return "Status"\n\n')
raise TypeError
# Else
if res[ 'Status' ] == 'Unknown':
res = self.__useOldPolicyRes( name = name, policyName = pName )
if res[ 'Status' ] not in ( 'Error', 'Unknown' ):
policyResults.append( res )
else:
gLogger.warn( res )
return policyResults
################################################################################
def _policyCombination( self, pol_results ):
'''
INPUT: list type
OUTPUT: dict type
* Compute a new status, and store it in variable newStatus, of type integer.
* Make a list of policies that have the worst result.
* Concatenate the Reason fields
* Take the first EndDate field that exists (FIXME: Do something more clever)
* Finally, return the result
'''
if pol_results == []:
return {}
pol_results.sort( key=Status.value_of_policy )
newStatus = -1 # First, set an always invalid status
try:
# We are in a special status, maybe forbidden transitions
_prio, access_list, gofun = Status.statesInfo[ self.__status ]
if access_list != set():
# Restrictions on transitions, checking if one is suitable:
for polRes in pol_results:
if Status.value_of_policy( polRes ) in access_list:
newStatus = Status.value_of_policy( polRes )
break
# No status from policies suitable, applying stategy and
# returning result.
if newStatus == -1:
newStatus = gofun( access_list )
return { 'Status': Status.status_of_value( newStatus ),
'Reason': 'Status forced by PDP' }
else:
# Special Status, but no restriction on transitions
newStatus = Status.value_of_policy( pol_results[ 0 ] )
except KeyError:
# We are in a "normal" status: All transitions are possible.
newStatus = Status.value_of_policy( pol_results[ 0 ] )
# At this point, a new status has been chosen. newStatus is an
# integer.
worstResults = [ p for p in pol_results
if Status.value_of_policy( p ) == newStatus ]
# Concatenate reasons
def getReason( pol ):
try:
res = pol[ 'Reason' ]
except KeyError:
res = ''
return res
worstResultsReasons = [ getReason( p ) for p in worstResults ]
def catRes( xVal, yVal ):
'''
Concatenate xVal and yVal.
'''
if xVal and yVal :
return xVal + ' |###| ' + yVal
elif xVal or yVal:
if xVal:
return xVal
else:
return yVal
else:
return ''
concatenatedRes = reduce( catRes, worstResultsReasons, '' )
# Handle EndDate
endDatePolicies = [ p for p in worstResults if p.has_key( 'EndDate' ) ]
# Building and returning result
res = {}
res[ 'Status' ] = Status.status_of_value( newStatus )
if concatenatedRes != '':
res[ 'Reason' ] = concatenatedRes
if endDatePolicies != []:
res[ 'EndDate' ] = endDatePolicies[ 0 ][ 'EndDate' ]
return res
################################################################################
def __useOldPolicyRes( self, name, policyName ):
'''
Use the RSS Service to get an old policy result.
If such result is older than 2 hours, it returns {'Status':'Unknown'}
'''
res = self.clients[ 'ResourceManagementClient' ].getPolicyResult( name = name, policyName = policyName )
if not res[ 'OK' ]:
return { 'Status' : 'Unknown' }
res = res[ 'Value' ]
if res == []:
return { 'Status' : 'Unknown' }
res = res[ 0 ]
oldStatus = res[ 5 ]
oldReason = res[ 6 ]
lastCheckTime = res[ 8 ]
if ( lastCheckTime + datetime.timedelta(hours = 2) ) < datetime.datetime.utcnow():
return { 'Status' : 'Unknown' }
result = {}
result[ 'Status' ] = oldStatus
result[ 'Reason' ] = oldReason
result[ 'OLD' ] = True
result[ 'PolicyName' ] = policyName
return result
################################################################################
#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF
class Publisher:
"""
Class Publisher is in charge of getting dispersed information, to be published on the web.
"""
#############################################################################
def __init__(self,
VOExtension,
rsDBIn=None,
commandCallerIn=None,
infoGetterIn=None,
WMSAdminIn=None):
"""
Standard constructor
:params:
:attr:`VOExtension`: string, VO Extension (e.g. 'LHCb')
:attr:`rsDBIn`: optional ResourceStatusDB object
(see :class: `DIRAC.ResourceStatusSystem.DB.ResourceStatusDB.ResourceStatusDB`)
:attr:`commandCallerIn`: optional CommandCaller object
(see :class: `DIRAC.ResourceStatusSystem.Command.CommandCaller.CommandCaller`)
:attr:`infoGetterIn`: optional InfoGetter object
(see :class: `DIRAC.ResourceStatusSystem.Utilities.InfoGetter.InfoGetter`)
:attr:`WMSAdminIn`: optional RPCClient object for WMSAdmin
(see :class: `DIRAC.Core.DISET.RPCClient.RPCClient`)
"""
self.configModule = __import__(
VOExtension + "DIRAC.ResourceStatusSystem.Policy.Configurations",
globals(), locals(), ['*'])
if rsDBIn is not None:
self.rsDB = rsDBIn
else:
from DIRAC.ResourceStatusSystem.DB.ResourceStatusDB import ResourceStatusDB
self.rsDB = ResourceStatusDB()
if commandCallerIn is not None:
self.cc = commandCallerIn
else:
from DIRAC.ResourceStatusSystem.Command.CommandCaller import CommandCaller
self.cc = CommandCaller()
if infoGetterIn is not None:
self.ig = infoGetterIn
else:
from DIRAC.ResourceStatusSystem.Utilities.InfoGetter import InfoGetter
self.ig = InfoGetter(VOExtension)
if WMSAdminIn is not None:
self.WMSAdmin = WMSAdminIn
else:
from DIRAC.Core.DISET.RPCClient import RPCClient
self.WMSAdmin = RPCClient("WorkloadManagement/WMSAdministrator")
self.threadPool = ThreadPool(2, 5)
self.lockObj = threading.RLock()
self.infoForPanel_res = {}
#############################################################################
def getInfo(self, granularity, name, useNewRes=False):
"""
Standard method to get all the info to be published
This method uses a ThreadPool (:class:`DIRAC.Core.Utilities.ThreadPool.ThreadPool`)
with 2-5 threads. The threaded method is
:meth:`DIRAC.ResourceStatusSystem.Utilities.Publisher.Publisher.getInfoForPanel`
:params:
:attr:`granularity`: string - a ValidRes
:attr:`name`: string - name of the Validres
:attr:`useNewRes`: boolean. When set to true, will get new results,
otherwise it will get cached results (where available).
"""
if granularity not in ValidRes:
raise InvalidRes, where(self, self.getInfo)
self.infoForPanel_res = {}
status = None
formerStatus = None
siteType = None
serviceType = None
resourceType = None
if granularity in ('Resource', 'Resources'):
try:
resourceType = self.rsDB.getMonitoredsList(
'Resource', ['ResourceType'], resourceName=name)[0][0]
except IndexError:
return "%s does not exist!" % name
if granularity in ('StorageElement', 'StorageElements'):
try:
siteType = self.rsDB.getMonitoredsList(
'StorageElement', ['SiteType'],
storageElementName=name)[0][0]
except IndexError:
return "%s does not exist!" % name
paramNames = [
'Type', 'Group', 'Name', 'Policy', 'DIRAC Status', 'RSS Status',
'Reason', 'Description'
]
infoToGet = self.ig.getInfoToApply(('view_info', ),
granularity,
status=status,
formerStatus=formerStatus,
siteType=siteType,
serviceType=serviceType,
resourceType=resourceType,
useNewRes=useNewRes)[0]['Panels']
infoToGet_res = {}
recordsList = []
infosForPolicy = {}
for panel in infoToGet.keys():
(granularityForPanel,
nameForPanel) = self.__getNameForPanel(granularity, name, panel)
if not self._resExist(granularityForPanel, nameForPanel):
# completeInfoForPanel_res = None
continue
#take composite RSS result for name
nameStatus_res = self._getStatus(nameForPanel, panel)
recordBase = [None, None, None, None, None, None, None, None]
recordBase[1] = panel.replace('_Panel', '')
recordBase[2] = nameForPanel #nameForPanel
try:
recordBase[4] = nameStatus_res[nameForPanel][
'DIRACStatus'] #DIRAC Status
except:
pass
recordBase[5] = nameStatus_res[nameForPanel][
'RSSStatus'] #RSS Status
record = copy.deepcopy(recordBase)
record[0] = 'ResultsForResource'
recordsList.append(record)
#take info that goes into the panel
infoForPanel = infoToGet[panel]
for info in infoForPanel:
self.threadPool.generateJobAndQueueIt(
self.getInfoForPanel,
args=(info, granularityForPanel, nameForPanel))
self.threadPool.processAllResults()
for policy in [x.keys()[0] for x in infoForPanel]:
record = copy.deepcopy(recordBase)
record[0] = 'SpecificInformation'
record[3] = policy #policyName
record[4] = None #DIRAC Status
record[5] = self.infoForPanel_res[policy][
'Status'] #RSS status for the policy
record[6] = self.infoForPanel_res[policy]['Reason'] #Reason
record[7] = self.infoForPanel_res[policy]['desc'] #Description
recordsList.append(record)
infosForPolicy[policy] = self.infoForPanel_res[policy]['infos']
infoToGet_res['TotalRecords'] = len(recordsList)
infoToGet_res['ParameterNames'] = paramNames
infoToGet_res['Records'] = recordsList
infoToGet_res['Extras'] = infosForPolicy
return infoToGet_res
#############################################################################
def getInfoForPanel(self, info, granularityForPanel, nameForPanel):
#get single RSS policy results
policyResToGet = info.keys()[0]
pol_res = self.rsDB.getPolicyRes(nameForPanel, policyResToGet)
if pol_res != []:
pol_res_dict = {'Status': pol_res[0], 'Reason': pol_res[1]}
else:
pol_res_dict = {'Status': 'Unknown', 'Reason': 'Unknown'}
self.lockObj.acquire()
try:
self.infoForPanel_res[policyResToGet] = pol_res_dict
finally:
self.lockObj.release()
#get policy description
desc = self._getPolicyDesc(policyResToGet)
#get other info
othersInfo = info.values()[0]
if not isinstance(othersInfo, list):
othersInfo = [othersInfo]
info_res = {}
for oi in othersInfo:
format = oi.keys()[0]
what = oi.values()[0]
info_bit_got = self._getInfo(granularityForPanel, nameForPanel,
format, what)
info_res[format] = info_bit_got
self.lockObj.acquire()
try:
self.infoForPanel_res[policyResToGet]['infos'] = info_res
self.infoForPanel_res[policyResToGet]['desc'] = desc
finally:
self.lockObj.release()
#############################################################################
def _getStatus(self, name, panel):
#get RSS status
RSSStatus = self._getInfoFromRSSDB(name, panel)[0][1]
#get DIRAC status
if panel in ('Site_Panel', 'SE_Panel'):
if panel == 'Site_Panel':
DIRACStatus = self.WMSAdmin.getSiteMaskLogging(name)
if DIRACStatus['OK']:
DIRACStatus = DIRACStatus['Value'][name].pop()[0]
else:
raise RSSException, where(self, self._getStatus)
elif panel == 'SE_Panel':
ra = getStorageElementStatus(name, 'ReadAccess')['Value']
wa = getStorageElementStatus(name, 'WriteAccess')['Value']
DIRACStatus = {'ReadAccess': ra, 'WriteAccess': wa}
status = {
name: {
'RSSStatus': RSSStatus,
'DIRACStatus': DIRACStatus
}
}
else:
status = {name: {'RSSStatus': RSSStatus}}
return status
#############################################################################
def _getInfo(self, granularity, name, format, what):
if format == 'RSS':
info_bit_got = self._getInfoFromRSSDB(name, what)
else:
if isinstance(what, dict):
command = what['CommandIn']
extraArgs = what['args']
else:
command = what
extraArgs = None
info_bit_got = self.cc.commandInvocation(granularity, name, None,
None, command, extraArgs)
try:
info_bit_got = info_bit_got['Result']
except:
pass
return info_bit_got
#############################################################################
def _getInfoFromRSSDB(self, name, what):
paramsL = ['Status']
siteName = None
serviceName = None
resourceName = None
storageElementName = None
serviceType = None
gridSiteName = None
if what == 'ServiceOfSite':
gran = 'Service'
paramsL.insert(0, 'ServiceName')
paramsL.append('Reason')
siteName = name
elif what == 'ResOfCompService':
gran = 'Resources'
paramsL.insert(0, 'ResourceName')
paramsL.append('Reason')
serviceType = name.split('@')[0]
gridSiteName = getGOCSiteName(name.split('@')[1])
if not gridSiteName['OK']:
raise RSSException, gridSiteName['Message']
gridSiteName = gridSiteName['Value']
elif what == 'ResOfStorService':
gran = 'Resources'
paramsL.insert(0, 'ResourceName')
paramsL.append('Reason')
serviceType = name.split('@')[0]
gridSiteName = getGOCSiteName(name.split('@')[1])
if not gridSiteName['OK']:
raise RSSException, gridSiteName['Message']
gridSiteName = gridSiteName['Value']
elif what == 'ResOfStorEl':
gran = 'StorageElements'
paramsL.insert(0, 'ResourceName')
paramsL.append('Reason')
storageElementName = name
elif what == 'StorageElementsOfSite':
gran = 'StorageElements'
paramsL.insert(0, 'StorageElementName')
paramsL.append('Reason')
if '@' in name:
DIRACsiteName = name.split('@').pop()
else:
DIRACsiteName = name
gridSiteName = getGOCSiteName(DIRACsiteName)
if not gridSiteName['OK']:
raise RSSException, gridSiteName['Message']
gridSiteName = gridSiteName['Value']
elif what == 'Site_Panel':
gran = 'Site'
paramsL.insert(0, 'SiteName')
siteName = name
elif what == 'Service_Computing_Panel':
gran = 'Service'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Service_Storage_Panel':
gran = 'Service'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Service_VO-BOX_Panel':
gran = 'Services'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Service_VOMS_Panel':
gran = 'Services'
paramsL.insert(0, 'ServiceName')
serviceName = name
elif what == 'Resource_Panel':
gran = 'Resource'
paramsL.insert(0, 'ResourceName')
resourceName = name
elif what == 'SE_Panel':
gran = 'StorageElement'
paramsL.insert(0, 'StorageElementName')
storageElementName = name
info_bit_got = self.rsDB.getMonitoredsList(
gran,
paramsList=paramsL,
siteName=siteName,
serviceName=serviceName,
serviceType=serviceType,
resourceName=resourceName,
storageElementName=storageElementName,
gridSiteName=gridSiteName)
return info_bit_got
#############################################################################
def _getPolicyDesc(self, policyName):
return self.configModule.Policies[policyName]['Description']
#############################################################################
def __getNameForPanel(self, granularity, name, panel):
if granularity in ('Site', 'Sites'):
if panel == 'Service_Computing_Panel':
granularity = 'Service'
name = 'Computing@' + name
elif panel == 'Service_Storage_Panel':
granularity = 'Service'
name = 'Storage@' + name
elif panel == 'OtherServices_Panel':
granularity = 'Service'
name = 'OtherS@' + name
elif panel == 'Service_VOMS_Panel':
granularity = 'Service'
name = 'VOMS@' + name
elif panel == 'Service_VO-BOX_Panel':
granularity = 'Service'
name = 'VO-BOX@' + name
# else:
# granularity = granularity
# name = name
# else:
# granularity = granularity
# name = name
return (granularity, name)
#############################################################################
def _resExist(self, granularity, name):
siteName = None
serviceName = None
resourceName = None
storageElementName = None
if granularity in ('Site', 'Sites'):
siteName = name
elif granularity in ('Service', 'Services'):
serviceName = name
elif granularity in ('Resource', 'Resources'):
resourceName = name
elif granularity in ('StorageElement', 'StorageElements'):
storageElementName = name
res = self.rsDB.getMonitoredsList(
granularity,
siteName=siteName,
serviceName=serviceName,
resourceName=resourceName,
storageElementName=storageElementName)
if res == []:
return False
else:
return True
class PDP:
"""
The PDP (Policy Decision Point) module is used to:
1. Decides which policies have to be applied.
2. Invokes an evaluation of the policies, and returns the result (to a PEP)
"""
def __init__(self, **clients):
'''
Constructor. Defines members that will be used later on.
'''
cc = CommandCaller()
self.clients = clients
self.pCaller = PolicyCaller(cc, **clients)
self.iGetter = InfoGetter()
self.__granularity = None
self.__name = None
self.__statusType = None
self.__status = None
self.__formerStatus = None
self.__reason = None
self.__siteType = None
self.__serviceType = None
self.__resourceType = None
self.__useNewRes = None
def setup(self,
granularity=None,
name=None,
statusType=None,
status=None,
formerStatus=None,
reason=None,
siteType=None,
serviceType=None,
resourceType=None,
useNewRes=False):
"""
PDP (Policy Decision Point) initialization
:params:
:attr:`granularity`: string - a ValidElement
:attr:`name`: string - name (e.g. of a site)
:attr:`status`: string - status
:attr:`formerStatus`: string - former status
:attr:`reason`: string - optional reason for last status change
:attr:`siteType`: string - optional site type
:attr:`serviceType`: string - optional service type
:attr:`resourceType`: string - optional resource type
"""
self.__granularity = granularity
self.__name = name
self.__statusType = statusType
self.__status = status
self.__formerStatus = formerStatus
self.__reason = reason
self.__siteType = siteType
self.__serviceType = serviceType
self.__resourceType = resourceType
self.__useNewRes = useNewRes
################################################################################
def takeDecision(self, policyIn=None, argsIn=None, knownInfo=None):
""" PDP MAIN FUNCTION
decides policies that have to be applied, based on
__granularity,
__name,
__status,
__formerStatus
__reason
If more than one policy is evaluated, results are combined.
Logic for combination: a conservative approach is followed
(i.e. if a site should be banned for at least one policy, that's what is returned)
returns:
{ 'PolicyType': a policyType (in a string),
'Action': True|False,
'Status': 'Active'|'Probing'|'Banned',
'Reason': a reason
'EndDate: datetime.datetime (in a string)}
"""
polToEval = self.iGetter.getInfoToApply(
('policy', 'policyType'),
granularity=self.__granularity,
statusType=self.__statusType,
status=self.__status,
formerStatus=self.__formerStatus,
siteType=self.__siteType,
serviceType=self.__serviceType,
resourceType=self.__resourceType,
useNewRes=self.__useNewRes)
policyType = polToEval['PolicyType'] # type: generator
if policyIn:
# Only the policy provided will be evaluated
# FIXME: Check that the policies are valid.
singlePolicyResults = policyIn.evaluate()
else:
singlePolicyResults = self._invocation(self.__granularity,
self.__name, self.__status,
policyIn, argsIn,
polToEval['Policies'])
policyCombinedResults = self._policyCombination(singlePolicyResults)
if policyCombinedResults == {}:
policyCombinedResults['Action'] = False
policyCombinedResults['Reason'] = 'No policy results'
policyCombinedResults['PolicyType'] = policyType
if policyCombinedResults.has_key('Status'):
newstatus = policyCombinedResults['Status']
if newstatus != self.__status: # Policies satisfy
newPolicyType = self.iGetter.getNewPolicyType(
self.__granularity, newstatus)
policyType = set(policyType) & set(newPolicyType)
policyCombinedResults['Action'] = True
else: # Policies does not satisfy
policyCombinedResults['Action'] = False
policyCombinedResults['PolicyType'] = policyType
return {
'SinglePolicyResults': singlePolicyResults,
'PolicyCombinedResult': policyCombinedResults
}
################################################################################
def _invocation(self, granularity, name, status, policy, args, policies):
'''
One by one, use the PolicyCaller to invoke the policies, and putting
their results in `policyResults`. When the status is `Unknown`, invokes
`self.__useOldPolicyRes`. Always returns a list, possibly empty.
'''
policyResults = []
for pol in policies:
pName = pol['Name']
pModule = pol['Module']
extraArgs = pol['args']
commandIn = pol['commandIn']
res = self.pCaller.policyInvocation(granularity=granularity,
name=name,
status=status,
policy=policy,
args=args,
pName=pName,
pModule=pModule,
extraArgs=extraArgs,
commandIn=commandIn)
# If res is empty, return immediately
if not res:
return policyResults
if not res.has_key('Status'):
print('\n\n Policy result ' + str(res) +
' does not return "Status"\n\n')
raise TypeError
# Else
if res['Status'] == 'Unknown':
res = self.__useOldPolicyRes(name=name, policyName=pName)
if res['Status'] not in ('Error', 'Unknown'):
policyResults.append(res)
else:
gLogger.warn(res)
return policyResults
################################################################################
def _policyCombination(self, pol_results):
'''
INPUT: list type
OUTPUT: dict type
* Compute a new status, and store it in variable newStatus, of type integer.
* Make a list of policies that have the worst result.
* Concatenate the Reason fields
* Take the first EndDate field that exists (FIXME: Do something more clever)
* Finally, return the result
'''
if pol_results == []:
return {}
pol_results.sort(key=Status.value_of_policy)
newStatus = -1 # First, set an always invalid status
try:
# We are in a special status, maybe forbidden transitions
_prio, access_list, gofun = Status.statesInfo[self.__status]
if access_list != set():
# Restrictions on transitions, checking if one is suitable:
for polRes in pol_results:
if Status.value_of_policy(polRes) in access_list:
newStatus = Status.value_of_policy(polRes)
break
# No status from policies suitable, applying stategy and
# returning result.
if newStatus == -1:
newStatus = gofun(access_list)
return {
'Status': Status.status_of_value(newStatus),
'Reason': 'Status forced by PDP'
}
else:
# Special Status, but no restriction on transitions
newStatus = Status.value_of_policy(pol_results[0])
except KeyError:
# We are in a "normal" status: All transitions are possible.
newStatus = Status.value_of_policy(pol_results[0])
# At this point, a new status has been chosen. newStatus is an
# integer.
worstResults = [
p for p in pol_results if Status.value_of_policy(p) == newStatus
]
# Concatenate reasons
def getReason(pol):
try:
res = pol['Reason']
except KeyError:
res = ''
return res
worstResultsReasons = [getReason(p) for p in worstResults]
def catRes(xVal, yVal):
'''
Concatenate xVal and yVal.
'''
if xVal and yVal:
return xVal + ' |###| ' + yVal
elif xVal or yVal:
if xVal:
return xVal
else:
return yVal
else:
return ''
concatenatedRes = reduce(catRes, worstResultsReasons, '')
# Handle EndDate
endDatePolicies = [p for p in worstResults if p.has_key('EndDate')]
# Building and returning result
res = {}
res['Status'] = Status.status_of_value(newStatus)
if concatenatedRes != '':
res['Reason'] = concatenatedRes
if endDatePolicies != []:
res['EndDate'] = endDatePolicies[0]['EndDate']
return res
################################################################################
def __useOldPolicyRes(self, name, policyName):
'''
Use the RSS Service to get an old policy result.
If such result is older than 2 hours, it returns {'Status':'Unknown'}
'''
res = self.clients['ResourceManagementClient'].getPolicyResult(
name=name, policyName=policyName)
if not res['OK']:
return {'Status': 'Unknown'}
res = res['Value']
if res == []:
return {'Status': 'Unknown'}
res = res[0]
oldStatus = res[5]
oldReason = res[6]
lastCheckTime = res[8]
if (lastCheckTime +
datetime.timedelta(hours=2)) < datetime.datetime.utcnow():
return {'Status': 'Unknown'}
result = {}
result['Status'] = oldStatus
result['Reason'] = oldReason
result['OLD'] = True
result['PolicyName'] = policyName
return result
################################################################################
#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF#EOF
def testGetInfoToApply(self):
ig = InfoGetter("LHCb")
for g in ValidRes:
for s in ValidStatus:
for site_t in ValidSiteType:
for service_t in ValidServiceType:
if g in ("Site", "Sites"):
panel = "Site_Panel"
if g in ("Service", "Services"):
if service_t == "Storage":
panel = "Service_Storage_Panel"
if service_t == "Computing":
panel = "Service_Computing_Panel"
if service_t == "VO-BOX":
panel = "Service_VO-BOX_Panel"
if service_t == "VOMS":
panel = "Service_VOMS_Panel"
if g in ("Resource", "Resources"):
panel = "Resource_Panel"
if g in ("StorageElementRead", "StorageElementsRead"):
panel = "SE_Panel"
if g in ("StorageElementWrite", "StorageElementsWrite"):
panel = "SE_Panel"
for resource_t in ValidResourceType:
## Testing the policyType (__getPolTypes) part
res = ig.getInfoToApply(("policyType",), g, None, s, None, site_t, service_t, resource_t)
for p_res in res["PolicyType"]:
self.assert_(p_res in CS.getTypedDictRootedAt("PolicyTypes").keys())
for useNewRes in (False, True):
## Testing the policy (__getPolToEval) part
res = ig.getInfoToApply(
("policy",), g, None, s, None, site_t, service_t, resource_t, useNewRes
)
pModuleList = []
for k in self.configModule.Policies.keys():
try:
if self.configModule.Policies[k]["module"] not in pModuleList:
pModuleList.append(self.configModule.Policies[k]["module"])
except KeyError:
pass
for p_res in res["Policies"]: # All __getPolToEval results...
self.assertTrue(p_res["Name"] in CS.getTypedDictRootedAt("Policies"))
# self.assertTrue(p_res['Module'] in pModuleList)
if useNewRes is False:
self.assertEqual(
p_res["commandIn"], self.configModule.Policies[p_res["Name"]]["commandIn"]
)
self.assertEqual(
p_res["args"], self.configModule.Policies[p_res["Name"]]["args"]
)
else:
try:
self.assertEqual(
p_res["commandIn"],
self.configModule.Policies[p_res["Name"]]["commandInNewRes"],
)
except KeyError:
self.assertEqual(
p_res["commandIn"],
self.configModule.Policies[p_res["Name"]]["commandIn"],
)
try:
self.assertEqual(
p_res["args"], self.configModule.Policies[p_res["Name"]]["argsNewRes"]
)
except KeyError:
self.assertEqual(
p_res["args"], self.configModule.Policies[p_res["Name"]]["args"]
)
res = ig.getInfoToApply(
("panel_info",), g, None, s, None, site_t, service_t, resource_t, useNewRes
)
for p_res in res["Info"]:
# if 'JobsEfficiencySimple' in p_res.keys():
# print useNewRes, p_res
for p_name in p_res.keys():
self.assert_(p_name in self.configModule.Policies.keys())
if isinstance(p_res[p_name], list):
for i in range(len(p_res[p_name])):
for k in p_res[p_name][i].keys():
if useNewRes:
try:
self.assertEqual(
p_res[p_name][i][k]["CommandIn"],
self.configModule.Policies[p_name][panel][i][k][
"CommandInNewRes"
],
)
except KeyError:
self.assertEqual(
p_res[p_name][i][k]["CommandIn"],
self.configModule.Policies[p_name][panel][i][k][
"CommandIn"
],
)
except TypeError:
self.assertEqual(
p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k],
)
try:
self.assertEqual(
p_res[p_name][i][k]["args"],
self.configModule.Policies[p_name][panel][i][k][
"argsNewRes"
],
)
except KeyError:
self.assertEqual(
p_res[p_name][i][k]["args"],
self.configModule.Policies[p_name][panel][i][k]["args"],
)
except TypeError:
self.assertEqual(
p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k],
)
else:
try:
self.assertEqual(
p_res[p_name][i][k]["CommandIn"],
self.configModule.Policies[p_name][panel][i][k][
"CommandIn"
],
)
except:
self.assertEqual(
p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k],
)
try:
self.assertEqual(
p_res[p_name][i][k]["args"],
self.configModule.Policies[p_name][panel][i][k]["args"],
)
except:
self.assertEqual(
p_res[p_name][i][k],
self.configModule.Policies[p_name][panel][i][k],
)
else:
self.assertEqual(p_res[p_name], self.configModule.Policies[p_name][panel])
