Techniques of managing licenses of virtual desktops

1. A method of managing a collection of virtual desktops, comprising:

sending, at a first virtual desktop of the collection of virtual desktops, a first request for validating a license for the first virtual desktop to a license manager after completion of a booting process of the first virtual desktop and prior to launch any user application;

receiving, at the license manager and from the first virtual desktop, the first request;

determining, at the license manager, whether a license is available for the first virtual desktop;

sending, at the license manager, a validation status message to the first virtual desktop to indicate whether a license is available for the first virtual desktop based on the determination;

receiving, at the first virtual desktop, the validation status message; and

resending, at the first virtual desktop, the first request to the license manager repeatedly until that a predetermined number of first requests has been sent to the license manager, when each validation status message received in response indicates that a license has not been allocated to the first virtual desktop;

determining, by the first virtual desktop in response to sending the predetermined number of the first requests and to not being allocated a license, to shut down the first virtual desktop; and

shutting down the first virtual desktop.

2. The method of claim 1 , further comprising:

allocating a first license to the first virtual desktop when a license is available for the first virtual desktop, wherein the validation status message indicates that a license has been allocated to the first virtual desktop.

3. The method of claim 1 , wherein the determining whether a license is available further comprises:

determining, at the license manager, a total number of licenses available for the collection of virtual desktops;

determining a first number of licenses that have been allocated to virtual desktops of the collection;

determining that a license is available when the total number is greater than the first number; and

determining that a license is not available when the total number is not greater than the first number.

4. The method of claim 3 , wherein the determining whether a license is available further comprises:

determining whether a license has been allocated to the first virtual desktop previously, wherein the determining whether a license is available is performed in response to a determination that a license has not been allocated, wherein the validation status message is sent in response to a determination that a license has been allocated.

5. The method of claim 1 , further comprising:

continuing to launch one or more applications on the first virtual desktop when the validation status message indicates that a license has been allocated to the first virtual desktop.

6. An apparatus for managing a collection of virtual desktops, comprising:

a memory storing one or more instructions; and

at least one processor coupled to the memory and configured to execute the one or more instructions to:

send, at a first virtual desktop of the collection of virtual desktops, a first request for validating a license for the first virtual desktop to a license manager after completion of a booting process of the first virtual desktop and prior to launch any user application;

receive, at the license manager and from the first virtual desktop, the first request;

determine, at the license manager, whether a license is available for the first virtual desktop;

send, at the license manager, a validation status message to the first virtual desktop to indicate whether a license is available for the first virtual desktop based on the determination;

receive, at the first virtual desktop, the validation status message; and

resend, at the first virtual desktop, the first request to the license manager repeatedly until that a predetermined number of first requests has been sent to the license manager, when each validation status message received in response indicates that a license has not been allocated to the first virtual desktop;

determine, by the first virtual desktop in response to sending the predetermined number of the first requests and to not being allocated a license, to shut down the first virtual desktop; and

shut down the first virtual desktop.

7. The system of claim 6 , wherein the at least one processor is further configured to:

allocate a first license to the first virtual desktop when a license is available for the first virtual desktop, wherein the validation status message indicates that a license has been allocated to the first virtual desktop.

8. The system of claim 6 , wherein to determine whether a license is available, the at least one processor is further configured to:

determine, at the license manager, a total number of licenses available for the collection of virtual desktops;

determine a first number of licenses that have been allocated to virtual desktops of the collection;

determine that a license is available when the total number is greater than the first number; and

determine that a license is not available when the total number is not greater than the first number.

9. The system of claim 8 , wherein to determine whether a license is available, the at least one processor is further configured to:

determine whether a license has been allocated to the first virtual desktop previously, wherein the determining whether a license is available is performed in response to a determination that a license has not been allocated, wherein the validation status message is sent in response to a determination that a license has been allocated.

10. The system of claim 6 , wherein the at least one processor is further configured to:

continue to launch one or more applications on the first virtual desktop when the validation status message indicates that a license has been allocated to the first virtual desktop.

11. A non-transitory computer-readable medium storing computer executable code for managing a collection of virtual desktops, comprising code, when executed by a processor, to:

send, at a first virtual desktop of the collection of virtual desktops, a first request for validating a license for the first virtual desktop to a license manager after completion of a booting process of the first virtual desktop and prior to launch any user application;

receive, at the license manager and from the first virtual desktop, the first request;

determine, at the license manager, whether a license is available for the first virtual desktop;

send, at the license manager, a validation status message to the first virtual desktop to indicate whether a license is available for the first virtual desktop based on the determination;

receive, at the first virtual desktop, the validation status message; and

resend, at the first virtual desktop, the first request to the license manager repeatedly until that a predetermined number of first requests has been sent to the license manager, when each validation status message received in response indicates that a license has not been allocated to the first virtual desktop;

determine, by the first virtual desktop in response to sending the predetermined number of the first requests and to not being allocated a license, to shut down the first virtual desktop; and

shut down the first virtual desktop.

12. The non-transitory computer-readable medium of claim 11 , wherein the code is further configured to:

allocate a first license to the first virtual desktop when a license is available for the first virtual desktop, wherein the validation status message indicates that a license has been allocated to the first virtual desktop.

13. The non-transitory computer-readable medium of claim 11 , wherein to determine whether a license is available, the code is further configured to:

determine, at the license manager, a total number of licenses available for the collection of virtual desktops;

determine a first number of licenses that have been allocated to virtual desktops of the collection;

determine that a license is available when the total number is greater than the first number; and

determine that a license is not available when the total number is not greater than the first number.

14. The non-transitory computer-readable medium of claim 13 , wherein to determine whether a license is available, the code is further configured to:

determine whether a license has been allocated to the first virtual desktop previously, wherein the determining whether a license is available is performed in response to a determination that a license has not been allocated, wherein the validation status message is sent in response to a determination that a license has been allocated.