ConfigurableUser.py

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"""
Example of usage of ConfigurableUser classes (for high level configuration).
"""
from __future__ import print_function
from Gaudi.Configuration import *
 
 
class ExampleIO(ConfigurableUser):
    __slots__ = {"EvtMax": 1, "Read": "NONE", "Write": "NONE"}
    __used_configurables__ = [ApplicationMgr]
 
    def __apply_configuration__(self):
        # Propagate the properties to all used configurables
        # In this case the only effect is to set the ApplicationMgr EvtMax.
        self.propagateProperties()
 
        read = self.getProp("Read")
        if read == "NONE":
            ApplicationMgr(EvtSel="NONE")
        else:
            log.warning("%s: Cannot handle value %r of property Read",
                        self.name(), read)
 
        write = self.getProp("Write")
        if read == "NONE":
            ApplicationMgr(HistogramPersistency="NONE")
        else:
            log.warning("%s: Cannot handle value %r of property Write",
                        self.name(), write)
 
 
class ExampleCommon(ConfigurableUser):
    __slots__ = {"OutputLevel": INFO, "StatusCodeCheck": False}
    __used_configurables__ = []
 
    def __apply_configuration__(self):
        ApplicationMgr().StatusCodeCheck = self.getProp("StatusCodeCheck")
        MessageSvc().OutputLevel = self.getProp("OutputLevel")
 
 
class ExampleApplication(ConfigurableUser):
    __slots__ = {
        "FullDebug": False,
        "TopAlg": [],
    }
    __used_configurables__ = [ExampleCommon, ApplicationMgr]
 
    def __apply_configuration__(self):
        if self.getProp("FullDebug"):
            ExampleCommon(OutputLevel=VERBOSE, StatusCodeCheck=True)
        else:
            ExampleCommon(OutputLevel=INFO, StatusCodeCheck=False)
        # Propagate the properties to all used configurables
        # In this case the only effect is to set the ApplicationMgr TopAlg.
        self.propagateProperties()
 
 
def PostConfAction():
    """
    Action printing the result of the configuration of the ApplicationMgr.
    """
    print("==== Configuration completed ====")
    print(ApplicationMgr())
 
 
appendPostConfigAction(PostConfAction)
 
ExampleApplication(TopAlg=["GaudiExamples::TimingAlg/Timing"], FullDebug=True)
ExampleIO(EvtMax=10)