How to retrieve a device logging level within a device server

# 7 years ago
Cyrille	Hi there, Is it possible to retrieve a device logging level within a device server? Device_4Impl does not seem to provide such a facility. Thanks for your help. Cyrille.

# 7 years ago
Reynald	Hi Cyrille, One way to do that is to create a DeviceProxy on yourself and to invoke Tango::DeviceProxy::get_logging_level() as documented here : http://www.esrf.eu/computing/cs/tango/tango_doc/kernel_doc/cpp_doc/classTango_1_1DeviceProxy.html#a7bed3468688fb6b52cb6ce398effdc51 Another way would be to invoke GetLoggingLevel Tango command on your admin device but this is a bit more complicated. Hoping this helps, Reynald Rosenberg's Law: Software is easy to make, except when you want it to do something new. Corollary: The only software that's worth making is software that does something new.

# 7 years ago

Reynald

Hi Cyrille,

One way to do that is to create a DeviceProxy on yourself and to invoke Tango::DeviceProxy::get_logging_level() as documented here :
http://www.esrf.eu/computing/cs/tango/tango_doc/kernel_doc/cpp_doc/classTango_1_1DeviceProxy.html#a7bed3468688fb6b52cb6ce398effdc51

Another way would be to invoke GetLoggingLevel Tango command on your admin device but this is a bit more complicated.

Hoping this helps,
Reynald

Rosenberg's Law: Software is easy to make, except when you want it to do something new.
Corollary: The only software that's worth making is software that does something new.

# 7 years ago
Po	Hi Cyrille, You can get the device logging level using admin device. Create a DeviceProxy of the admin device within your device and retrieve the logging level using "GetLoggingLevel" command exposed by the admin device. For details, refer section 6.1.7.2 of Tango Manual 9.2 Hope it helps. Edit: Thanks Reynald, I missed to see your post and the first solution which you proposed. Kind regards, Jyotin Edited 7 years ago

# 7 years ago

Hi Cyrille,

You can get the device logging level using admin device. Create a DeviceProxy of the admin device within your device and retrieve the logging level using "GetLoggingLevel" command exposed by the admin device.

For details, refer section 6.1.7.2 of Tango Manual 9.2

Hope it helps.

Edit: Thanks Reynald, I missed to see your post and the first solution which you proposed. smile

Kind regards,
Jyotin

Edited 7 years ago

# 7 years ago
Cyrille	Hi, thanks for your answers! I cannot use device proxy on itself nor admin device as I try to get logging level at init_device time… I found an interesting link http://www.tango-controls.org/resources/howto/how-pytango/ and especially the following: "Get the device server admin NOT TESTED U = PyTango.Util.instance() U.get_dserver_device() Modify internal polling NOTE: It doesn't work at init_device(); must be done later on in a hook method" I don't understand what "must be done later on in a hook method" means. Can someone help? Cyrille.

# 7 years ago

Cyrille

Hi,

thanks for your answers! I cannot use device proxy on itself nor admin device as I try to get logging level at init_device time…
I found an interesting link http://www.tango-controls.org/resources/howto/how-pytango/ and especially the following:

"Get the device server admin

NOT TESTED

U = PyTango.Util.instance()
U.get_dserver_device()

Modify internal polling

NOTE: It doesn't work at init_device(); must be done later on in a hook method"

I don't understand what "must be done later on in a hook method" means. Can someone help?

Cyrille.

# 7 years ago
Vatsal	Hi Cyrille, A possible way of doing it in Java. In the init_device method use the following code: `String devName = deviceManager.getName(); int currLogLevel = LoggingManager.getInstance().getLoggingLevel(devName);` Hope this helps. Vatsal Trivedi Edited 7 years ago

# 7 years ago
Cyrille	Hi there, Thanks a lot for the last answer. It helped me a lot indeed! Using PyTango, if you need to get the current logging level at init_device time, do the following: `def init_device(self): self.debug_stream("In init_device()") self.get_device_properties(self.get_device_class()) #—– PROTECTED REGION ID(MyDevice.init_device) ENABLED START —–# level = self.get_logger().get_level() #—– PROTECTED REGION END —–# // MyDevice.init_device` level will have one of the following values : OFF = 100 FATAL = 200 ERROR = 300 WARN = 400 INFO = 500 DEBUG = 600 Cyrille.

# 7 years ago

Cyrille

Hi there,

Thanks a lot for the last answer. It helped me a lot indeed!

Using PyTango, if you need to get the current logging level at init_device time, do the following:

    def init_device(self):
        self.debug_stream("In init_device()")
        self.get_device_properties(self.get_device_class())
        #—– PROTECTED REGION ID(MyDevice.init_device) ENABLED START —–#
        level = self.get_logger().get_level()
        #—– PROTECTED REGION END —–# // MyDevice.init_device

level will have one of the following values :
OFF = 100
FATAL = 200
ERROR = 300
WARN = 400
INFO = 500
DEBUG = 600

Cyrille.

# 7 years ago
Po	Hi Cyrille, I am not the Python expert; however tried to implement the use case you mentioned. You can get device logging level by using below code in the init method: `def __init__(self, cl, name): PyTango.Device_4Impl.__init__(self,cl,name) self.debug_stream("In __init__()") LoggingLevelTest.init_device(self) #—– PROTECTED REGION ID(LoggingLevelTest.__init__) ENABLED START —–# print PyTango.Logger.get_level(self.get_logger()) #—– PROTECTED REGION END —–# // LoggingLevelTest.__init__` Logging relation with the return values is as shown below: 100 - OFF (Log Level - 0) 200 - FATAL (Log Level - 1) 300 - ERROR (Log Level - 2) 400 - WARN (Log Level - 3) 500 - INFO (Log Level - 4) 600 - DEBUG (Log Level - 5) Hope this is what you are looking for. Kind regards, Jyotin Edit: I missed your post, great to see that you figured out the solution! Edited 7 years ago

# 7 years ago

Hi Cyrille,

I am not the Python expert; however tried to implement the use case you mentioned.
You can get device logging level by using below code in the init method:

    def __init__(self, cl, name):
        PyTango.Device_4Impl.__init__(self,cl,name)
        self.debug_stream("In __init__()")
        LoggingLevelTest.init_device(self)
        #—– PROTECTED REGION ID(LoggingLevelTest.__init__) ENABLED START —–#

        print PyTango.Logger.get_level(self.get_logger())

        #—– PROTECTED REGION END —–#	//	LoggingLevelTest.__init__

Logging relation with the return values is as shown below:

100 - OFF (Log Level - 0)
200 - FATAL (Log Level - 1)
300 - ERROR (Log Level - 2)
400 - WARN (Log Level - 3)
500 - INFO (Log Level - 4)
600 - DEBUG (Log Level - 5)

Hope this is what you are looking for.

Kind regards,
Jyotin

Edit: I missed your post, great to see that you figured out the solution! smile

Edited 7 years ago

# 7 years ago
Cyrille	Thanks Jyotin. Cyrille.