The following change was not accepted in #5406, but I still think it makes sense because:

• we have the following relationship: WMS agents/services use Resources/Computing (Resources/Computing should work as a standalone, so without having to interact with a WMS service).
• there is no reliable way to get the CE status from HTCondor itself
• the caller (Site Director) now tries to get the CE status from the CE itself, and if it does not work, tries from the PilotAgentsDB, so we duplicate the operation:

  DIRAC/src/DIRAC/WorkloadManagementSystem/Agent/SiteDirector.py

  Lines 369 to 408 in 889337e

  	result = ce.available()
  	if result["OK"]:
  	ceInfoDict = result["CEInfoDict"]
  	self.log.info(
  	"CE queue report",
  	f"({ceName}_{queueName}): Wait={ceInfoDict['WaitingJobs']}, Run={ceInfoDict['RunningJobs']}, Max={ceInfoDict['MaxTotalJobs']}",
  	)
  	return (result["Value"], ceInfoDict["WaitingJobs"])
  	# If we cannot get available slots from the CE, then we get them from the pilotAgentsDB
  	maxWaitingJobs = int(self.queueDict[queue]["ParametersDict"].get("MaxWaitingJobs", 10))
  	maxTotalJobs = int(self.queueDict[queue]["ParametersDict"].get("MaxTotalJobs", 10))
  	# Get the number of transient pilots
  	result = self.pilotAgentsDB.countPilots(
  	{"DestinationSite": ceName, "Queue": queueName, "Status": PilotStatus.PILOT_TRANSIENT_STATES}
  	)
  	if not result["OK"]:
  	self.log.warn("Failed to check PilotAgentsDB", f"for queue {queue}: \n{result['Message']}")
  	self.failedQueues[queue] += 1
  	return (0, 0)
  	totalJobs = result["Value"]
  	# Get the number of waiting pilots
  	result = self.pilotAgentsDB.countPilots(
  	{"DestinationSite": ceName, "Queue": queueName, "Status": PilotStatus.PILOT_WAITING_STATES}
  	)
  	if not result["OK"]:
  	self.log.warn("Failed to check PilotAgentsDB", f"for queue {queue}: \n{result['Message']}")
  	self.failedQueues[queue] += 1
  	return (0, 0)
  	waitingJobs = result["Value"]
  	runningJobs = totalJobs - waitingJobs
  	self.log.info(
  	"PilotAgentsDB report",
  	f"({ceName}_{queueName}): Wait={waitingJobs}, Run={runningJobs}, Max={maxTotalJobs}",
  	)
  	totalSlots = min((maxTotalJobs - totalJobs), (maxWaitingJobs - waitingJobs))

• if we would try to call Resources/Computing from diracx, we would have troubles because HTCondorComputingElement relies on a DIRAC service.

Any reason to keep this dependency?

BEGINRELEASENOTES
*Resources
CHANGE: remove dependency from HTCondorComputingElement to PilotManager
ENDRELEASENOTES