Net::DBus::Object - Implement objects to export to the bus
# Connecting an object to the bus, under a service package main; use Net::DBus; # Attach to the bus my $bus = Net::DBus->find; # Acquire a service 'org.demo.Hello' my $service = $bus->export_service("org.demo.Hello"); # Export our object within the service my $object = Demo::HelloWorld->new($service); ....rest of program... # Define a new package for the object we're going # to export package Demo::HelloWorld; # Specify the main interface provided by our object use Net::DBus::Exporter qw(org.example.demo.Greeter); # We're going to be a DBus object use base qw(Net::DBus::Object); # Export a 'Greeting' signal taking a stringl string parameter dbus_signal("Greeting", ["string"]); # Export 'Hello' as a method accepting a single string # parameter, and returning a single string value dbus_method("Hello", ["string"], ["string"]); sub new { my $class = shift; my $service = shift; my $self = $class->SUPER::new($service, "/org/demo/HelloWorld"); bless $self, $class; return $self; } sub Hello { my $self = shift; my $name = shift; $self->emit_signal("Greeting", "Hello $name"); return "Said hello to $name"; } # Export 'Goodbye' as a method accepting a single string # parameter, and returning a single string, but put it # in the 'org.exaple.demo.Farewell' interface dbus_method("Goodbye", ["string"], ["string"], "org.example.demo.Farewell"); sub Goodbye { my $self = shift; my $name = shift; $self->emit_signal("Greeting", "Goodbye $name"); return "Said goodbye to $name"; }
This the base for implementing objects which are directly exported to the bus. The methods implemented in a subclass are mapped to methods on the bus. By using this class, an application is directly tieing the RPC functionality into its object model. Applications may thus prefer to use the Net::DBus::ProxyObject
class which allows the RPC functionality to be maintained separately from the core object model, by proxying RPC method calls.
This creates a new DBus object with an path of $path
registered within the service $service
. The $path
parameter should be a string complying with the usual DBus requirements for object paths, while the $service
parameter should be an instance of Net::DBus::Service. The latter is typically obtained by calling the export_service
method on the Net::DBus object.
This creates a new DBus child object with an path of $subpath
relative to its parent $parentobj
. The $subpath
parameter should be a string complying with the usual DBus requirements for object paths, while the $parentobj
parameter should be an instance of Net::DBus::BaseObject or a subclass.
Daniel P. Berrange
Copyright (C) 2005-2011 Daniel P. Berrange
Net::DBus, Net::DBus::Service, Net::DBus::BaseObject, Net::DBus::ProxyObject, Net::DBus::Exporter, Net::DBus::RemoteObject