dasbus.client.observer module
- class DBusObserver(message_bus, service_name, monitoring=<class 'dasbus.client.observer.GLibMonitoring'>)[source]
Bases:
objectBase class for DBus observers.
This class is recommended to use only to watch the availability of a service on DBus. It doesn’t provide any support for accessing objects provided by the service.
Usage:
# Create the observer and connect to its signals. observer = DBusObserver(SystemBus, "org.freedesktop.NetworkManager") def callback1(observer): print("Service is available!") def callback2(observer): print("Service is unavailable!") observer.service_available.connect(callback1) observer.service_unavailable.connect(callback2) # Connect to the service once it is available. observer.connect_once_available() # Disconnect the observer. observer.disconnect()
- connect_once_available()[source]
Connect to the service once it is available.
The observer is not connected to the service until it emits the service_available signal.
- disconnect()[source]
Disconnect from the service.
Disconnect from the service if it is connected and stop watching its availability.
- property is_service_available
The proxy can be accessed.
- property service_available
Signal that emits when the service is available.
Signal emits this class as an argument. You have to call the watch method to activate the signals.
- property service_name
Returns a DBus name.
Signal that emits when the service is unavailable.
Signal emits this class as an argument. You have to call the watch method to activate the signals.