On-demand composition and teardown of service infrastructure

• US 8,191,043 B2
• Filed: 05/06/2008
• Issued: 05/29/2012
• Est. Priority Date: 06/15/2006
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Mohindra, Ajay, Naik, Vijay K.
• Primary Examiner(s): TECKLU, ISAAC TUKU
• Application Number:
  US12/115,637
• Publication Number:
  US 20080209397A1
• Time in Patent Office: 1,484 Days
• Field of Search: None
• US Class Current: 717/121
• CPC Class Codes: G06F 8/36 Software reuse
• CPC Class Codes: G06F 8/61 Installation
• CPC Class Codes: G06F 9/44505 Configuring for program initiating, e.g. using registry, configuration files
• CPC Class Codes: G06F 9/5038 considering the execution order of a plurality of tasks, e.g. taking priority or time dependency constraints into consideration scheduling strategies G06F9/4881 and subgroups

Abstract

A computer implemented method, apparatus, and computer usable program code for creating a composite service. Dependencies are identified utilizing a set of active objects used to manage services to form identified dependencies in response to receiving a request for the composite service. The identified dependencies specify requirements of the composite service. The composite service has multiple components. Components are identified for the composite service using the identified dependencies to form identified components. The composite service is created using the identified components.

Claims

1. A computer implemented method for creating a composite service, the computer implemented method comprising:

responsive to receiving a request for a service request notification, instantiating a service component to process the service request notification;

identifying an active template to manage the instantiated service component, the active template comprising a plurality of active objects;

determining whether to instantiate a new active object in the identified active template to manage the instantiated service component;

responsive to a positive determination to instantiate a new active object, generating the new active object, the new active object having a service state;

configuring the service state of the new active object to manage the instantiated service component in a desired state, the desired state being the service state required to achieve a desired behavior of the instantiated service component; and

responsive to the positive determination to instantiate the new active object, sending a positive confirmation from the new active object, the positive confirmation being based on an availability of a requested service from the instantiated service component.

2. The computer implemented method of claim 1, further comprising:

responsive to a negative determination to instantiate a new active object, reconfiguring a service state of an existing active object from a current state to a different desired state, the different desired state being the service state required to achieve a desired behavior of the instantiated service component.

3. The computer implemented method of claim 1, further comprising:

determining whether a current state for the active object is the same as the desired state; and

responsive to determining that the current state for the active object is not the same as the desired state, determining if a configuration of the service component managed by the active object is in the desired state.

4. The computer implemented method of claim 3, further comprising:

responsive to determining that the service component managed by the active object is not in the desired state, determining dependencies on other service components of the service component managed by the active object;

responsive to determining that the service component managed by the active object is not in the desired state, determining bounds on configuration parameters components of the service component managed by the active object; and

sending service request notifications to active templates associated with the other service components to transition the other components from a current state of the other components to a desired state of the other components.

5. The computer implemented method of claim 4, further comprising:

receiving confirmation from the active templates associated with the other service components when the other service components are running in a desired configuration.

6. The computer implemented method of claim 2, further comprising:

receiving a notification that a service provided by one or more of the other service components is no longer needed; and

determining one or more service instances that will be affected by the termination of the other service components; and

identifying active objects of the one or more service instances that will be affected by the termination of the other service components.

7. The computer implemented method of claim 6, further comprising:

determining whether the one or more service instances are to be terminated or to be reconfigured.

8. The computer implemented method of claim 7, further comprising:

responsive to determining that the one or more service instances are to be terminated, setting a desired state of an affected active object to terminate.

9. The computer implemented method of claim 8, further comprising:

responsive to determining that the one or more service instances are to be reconfigured, setting the desired state of the affected active object to reconfigure.

10. A data processing system comprising:

a bus system;

a communications system connected to the bus system;

a memory connected to the bus system, wherein the memory includes a set of instructions and a composite service; and

a processing unit connected to the bus system, wherein the processing unit executes the set of instructions;

responsive to receiving a request for a service request notification, to instantiate a service component to process the service request notification;

to identify an active template to manage the instantiated service component, the active template comprising a plurality of active objects;

to determine whether to instantiate a new active object in the identified active template to manage the instantiated service component;

responsive to a positive determination to instantiate a new active object, to generate the new active object, the new active object having a service state;

to configure the service state of the new active object to manage the instantiated service component in a desired state, the desired state being the service state required to achieve a desired behavior of the instantiated service component; and

responsive to the positive determination to instantiate the new active object, to send a positive confirmation from the new active object, the positive confirmation being based on an availability of a requested service from the instantiated service component.

11. A computer program product comprising a non-transitory computer readable medium including computer usable program code for creating a composite service, the computer program product comprising:

computer usable program code responsive to receiving a request for a service request notification, for instantiating a service component to process the service request notification;

computer usable program code for identifying an active template to manage the instantiated service component, the active template comprising a plurality of active objects;

computer usable program code for determining whether to instantiate a new active object in the identified active template to manage the instantiated service component;

computer usable program code, responsive to a positive determination to instantiate a new active object, for generating the new active object, the new active object having a service state;

computer usable program code for configuring the service state of the new active object to manage the instantiated service component in a desired state, the desired state being the service state required to achieve a desired behavior of the instantiated service component; and

computer usable program code, responsive to the positive determination to instantiate the new active object, for sending a positive confirmation from the new active object, the positive confirmation being based on an availability of a requested service from the instantiated service component.

12. The computer program product of claim 11, further comprising:

responsive to a negative determination to instantiate a new active object, computer usable program code for reconfiguring a service state of an existing active object from a current state to a different desired state, the different desired state being the service state required to achieve a desired behavior of the instantiated service component.

13. The computer program product of claim 11, further comprising:

computer usable program code for determining whether a current state for the active object is the same as the desired state; and

computer usable program code, responsive to determining that the current state for the active object is not the same as the desired state, for determining if the configuration of the service component managed by the active object is in the desired state.

14. The computer program product of claim 11, further comprising:

computer usable program code for forming the composite service from a dependency tree, wherein the identified components of the composite service are active objects and active templates within an active repository.

15. The computer program product of claim 14, further comprising:

computer usable program code for receiving confirmation from the active templates associated with the other service components when the other service components are running in a desired configuration.