CacheFeederAgent

CacheFeederAgent

This agent feeds the Cache tables with the outputs of the cache commands.

CacheFeederAgent options

CacheFeederAgent
{
  #Time between cycles in seconds
  PollingTime = 900

  # Shifter to use by the commands invoked
  shifterProxy = DataManager
}

class DIRAC.ResourceStatusSystem.Agent.CacheFeederAgent.CacheFeederAgent(*args, **kwargs)

Bases: AgentModule

The CacheFeederAgent feeds the cache tables for the client and the accounting. It runs periodically a set of commands, and stores it’s results on the tables.

__init__(*args, **kwargs)

Common __init__ method for all Agents. All Agent modules must define: __doc__

They are used to populate __codeProperties

The following Options are used from the Configuration: - /DIRAC/Setup - Status - Enabled - PollingTime default = 120 - MaxCycles default = 500 - WatchdogTime default = 0 (disabled) - ControlDirectory control/SystemName/AgentName - WorkDirectory work/SystemName/AgentName - shifterProxy ‘’ - shifterProxyLocation WorkDirectory/SystemName/AgentName/.shifterCred

It defines the following default Options that can be set via Configuration (above): - MonitoringEnabled True - Enabled True if Status == Active - PollingTime 120 - MaxCycles 500 - ControlDirectory control/SystemName/AgentName - WorkDirectory work/SystemName/AgentName - shifterProxy False - shifterProxyLocation work/SystemName/AgentName/.shifterCred

different defaults can be set in the initialize() method of the Agent using am_setOption()

In order to get a shifter proxy in the environment during the execute() the configuration Option ‘shifterProxy’ must be set, a default may be given in the initialize() method.

am_Enabled()

am_checkStopAgentFile()

am_createStopAgentFile()

am_getControlDirectory()

am_getCyclesDone()

am_getMaxCycles()

am_getModuleParam(optionName)

am_getOption(optionName, defaultValue=None): Gets an option from the agent’s configuration section. The section will be a subsection of the /Systems section in the CS.

am_getPollingTime()

am_getShifterProxyLocation()

am_getStopAgentFile()

am_getWatchdogTime()

am_getWorkDirectory()

am_go()

am_initialize(*initArgs)

Common initialization for all the agents.

This is executed every time an agent (re)starts. This is called by the AgentReactor, should not be overridden.

am_removeStopAgentFile()

am_secureCall(functor, args=(), name=False)

am_setModuleParam(optionName, value)

am_setOption(optionName, value)

am_stopExecution()

beginExecution()

endExecution()

execute(): Just executes, via loadCommand, the commands in self.commands one after the other

finalize()

initialize(): Define the commands to be executed, and instantiate the clients that will be used.

loadCommand(commandModule, commandDict)

Loads and executes commands.

Parameters:

commandModule (str) – Name of the command (e.g. ‘Downtime’)
commandDict (dict) – dictionary of {‘CommandClass’:{arguments}}