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object_manager.go
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object_manager.go
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package bluez
import (
"github.com/godbus/dbus/v5"
)
var objectManager *ObjectManager
// GetObjectManager return a client instance of the Bluez object manager
func GetObjectManager() (*ObjectManager, error) {
if objectManager != nil {
return objectManager, nil
}
om, err := NewObjectManager(OrgBluezInterface, "/")
if err != nil {
return nil, err
}
objectManager = om
return om, nil
}
// NewObjectManager create a new ObjectManager client
func NewObjectManager(name string, path string) (*ObjectManager, error) {
om := new(ObjectManager)
om.client = NewClient(
&Config{
Name: name,
Iface: "org.freedesktop.DBus.ObjectManager",
Path: dbus.ObjectPath(path),
Bus: SystemBus,
},
)
return om, nil
}
// ObjectManager manges the list of all available objects
type ObjectManager struct {
client *Client
}
// Close the connection
func (o *ObjectManager) Close() {
o.client.Disconnect()
}
// GetManagedObjects return a list of all available objects registered
func (o *ObjectManager) GetManagedObjects() (map[dbus.ObjectPath]map[string]map[string]dbus.Variant, error) {
var objs map[dbus.ObjectPath]map[string]map[string]dbus.Variant
err := o.client.Call("GetManagedObjects", 0).Store(&objs)
return objs, err
}
//Register watch for signal events
func (o *ObjectManager) Register() (chan *dbus.Signal, error) {
path := o.client.Config.Path
iface := o.client.Config.Iface
return o.client.Register(dbus.ObjectPath(path), iface)
}
//Unregister watch for signal events
func (o *ObjectManager) Unregister(signal chan *dbus.Signal) error {
path := o.client.Config.Path
iface := o.client.Config.Iface
return o.client.Unregister(dbus.ObjectPath(path), iface, signal)
}
// GetManagedObject return an up to date view of a single object state.
// object is nil if the object path is not found
func (o *ObjectManager) GetManagedObject(objpath dbus.ObjectPath) (map[string]map[string]dbus.Variant, error) {
objects, err := o.GetManagedObjects()
if err != nil {
return nil, err
}
if p, ok := objects[objpath]; ok {
return p, nil
}
// return nil, errors.New("Object not found")
return nil, nil
}