Model driven approach for availability management framework (AMF) configuration generation

• US 8,752,003 B2
• Filed: 05/03/2011
• Issued: 06/10/2014
• Est. Priority Date: 05/03/2010
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Salehi, Pejman, Toeroe, Maria, Hamou-Lhadj, Abdelwahab, Colombo, Pietro, Khendek, Ferhat
• Primary Examiner(s): Kang, Insun
• Application Number:
  US13/099,880
• Publication Number:
  US 20110270595A1
• Time in Patent Office: 1,134 Days
• Field of Search: None
• US Class Current: 717/104
• CPC Class Codes: G06Q 10/00 Administration; Management

Abstract

A method and system for generating an Availability Management Framework (AMF) configuration based on a model driven approach. The AMF configuration is an instance of an AMF sub-profile that can be used to model resources and services to be protected, and is generated from an instance of the Entity Type Files (ETF) sub-profile and an instance of the Configuration Requirements (CR) sub-profile. The ETF sub-profile can be used to model the resources provided by vendors, and the CR sub-profile can be used to model configuration requirements. Each of the AMF sub-profile, the ETF sub-profile and the CR sub-profile is a specialization of pre-defined Unified Modeling Language (UML) meta-classes. An input that includes an ETF model and a CR model, which are instances of the ETF sub-profile and the CR sub-profile, respectively, is transformed into an AMF model as the AMF configuration.

Claims

1. A computer-implemented method of generating an Availability Management Framework (AMF) configuration for providing services and protecting the services against resource failure, wherein the AMF configuration is an instance of an AMF sub-profile that defines AMF elements to be used to model resources and the services, and is generated from an instance of an Entity Type Files (ETF) sub-profile, which is called an ETF model, and an instance of a Configuration Requirements (CR) sub-profile, which is call a CR model, each of the AMF sub-profile, the ETF sub-profile and the CR sub-profile being specializations of a pre-defined Unified Modeling Language (UML) meta-model, the method comprising the steps performed by a computer of:

receiving the ETF model, which defines a set of ETF prototypes of the ETF model that describe the resources provided by vendors;

receiving the CR model, which defines a set of CR elements of the CR model that specify configuration requirements;

applying a set of transformation rules, which are pre-defined for the ETF sub-profile, the CR sub-profile and the AMF sub-profile, to transform the ETF model and the CR model into an AMF model as the AMF configuration, wherein the CR model is organized as a first hierarchy of the CR elements, the ETF model is organized as a second hierarchy of the ETF prototypes, and one or more levels of the first hierarchy are missing levels in the second hierarchy, the step of applying further comprising the steps of;

transforming a selected subset of the ETF prototypes of the ETF model that satisfy the configuration requirements into a collection of the AMF elements organized as a hierarchy with the one or more levels missing; and

building the one or more missing levels from the collection of the AMF elements based on relationships between the one or more missing levels and existing levels of the first and second hierarchies; and

storing the AMF configuration to be used for availability management.

2. The method of claim 1, wherein the step of applying further comprises the step of:

from the ETF model, selecting the ETF prototypes that satisfy the configuration requirements to form the selected subset of the ETF prototypes;

creating a collection of AMF Types that describe characteristics of the AMF elements based on the selected subset of the ETF prototypes and the CR model; and

creating a set of the AMF elements based on the collection of AMF Types and the CR model to form the AMF configuration.

3. The method of claim 1, wherein the step of applying further comprises the steps of:

transforming the ETF model and the CR model into a selected ETF model and a first CR model, respectively, the selected ETF model including only the selected subset of the ETF prototypes that satisfy the configuration requirements, and the first CR model being the CR model with additional links to the selected subset of the ETF prototypes to indicate relationships with the selected subset of the ETF prototypes;

transforming the selected ETF model and the first CR model into an AMF Types model and a second CR model, the AMF Types model including a collection of AMF Types that describe characteristics for corresponding AMF entities, the second CR model being the first CR model with the additional links replaced with links to the collection of AMF Types to indicate relationships with the collection of AMF Types; and

transforming the AMF Types model and the second CR model into the corresponding AMF entities including components, component service instances (CSIs), service units (SUs), service instances (SIs), service groups (SGs), and applications, to complement the AMF model and form the AMF configuration.

4. The method of claim 1, wherein the method further comprises the steps of:

selecting, along a first direction of moving up the second hierarchy, the set of the ETF prototypes that provide the services required by the CR model;

removing, along a second direction of moving down the second hierarchy, the ETF prototypes that do not satisfy the configuration requirements; and

removing, by examining all levels of the second hierarchy in parallel, the ETF prototypes that are not required by the configuration requirements to produce the selected subset of the ETF prototypes.

5. The method of claim 1, wherein the step of selecting further comprises the steps of:

determining whether the capability of an ETF prototype in the ETF model is compliant with a redundancy model specified by a parent of the ETF prototype in the second hierarchy; and

determining whether the redundancy model specified by the parent of the ETF prototype is compliant with a required redundancy model specified by the CR model.

6. The method of claim 1, wherein the step of transforming further comprises the steps of:

generating a first set of AMF Types that have counterpart ETF prototypes in the ETF model; and

generating a second set of AMF Types that do not have counterpart ETF prototypes in the ETF model, the second set of AMF Types characterized by a set of attributes which are initialized with information described in the CR model,

wherein the AMF Types include component types, service unit (SU) types, service group (SG) types, application types, service types, and component service (CS) types.

7. The method of claim 6, wherein the first set of AMF Types and the second set of AMF Types form a collection of AMF Types, the method further comprising the steps of:

determining a number of AMF entities to be generated for each AMF Type in the collection of AMF Types based on attribute values specified in the CR model; and

creating links among the AMF entities and the collection of the AMF Types.

8. The method of claim 1, wherein the AMF sub-profile is created from a collection of AMF domain elements that are specified by AMF specification, the AMF domain elements including components, service units (SUs), service groups (SGs), and applications, and wherein each of the components, the SUs, the SGs, and the applications is mapped to a UML component meta-class.

9. The method of claim 8, wherein the AMF domain elements include service instances (SIs), component service instances (CSIs), clusters, node groups, application types, SG types, SU types, component types, service types (Svc types), component service types (CS types), and wherein each of the SIs, the CSIs, the clusters, the node groups, the application types, the SG types, the SU types, the component types, the Svc types, and the CS types is mapped to a UML class meta-class.

10. The method of claim 8, wherein relationships among the AMF domain elements are mapped to a plurality of UML meta-classes, the relationships including provide, type, groups and protect are mapped to a UML association meta-class, and the relationships including deploy and member node are mapped to a UML dependency meta-class.

11. A computer system configured to generate an Availability Management Framework (AMF) configuration for providing services and protecting the services against resource failure, wherein the AMF configuration is an instance of an AMF sub-profile that defines a set of AMF elements to be used to model resources and the services, and is generated from an instance of an Entity Types File (ETF) sub-profile, which is called an ETF model, and an instance of a Configuration Requirements (CR) sub-profile, which is called a CR model, each of the AMF sub-profile, the ETF sub-profile and the CR sub-profile being with a specialization of a pre-defined Unified Modeling Language (UML) meta-model, the computer system comprising:

a memory storing;

the ETF model, which defines a set of ETF prototypes of the ETF model that describe the resources provided by vendors; and

the CR model, which defines a set of CR elements of the CR model that specify configuration requirements; and

a processor coupled to the memory, the processor configured to;

receive the ETF model and the CR model, and apply a set of transformation rules, which are pre-defined for the ETF sub-profile, the CR sub-profile and the AMF sub-profile, to transform the ETF model and the CR model into an AMF model as the AMF configuration, wherein the CR model is organized as a first hierarchy of the CR elements, the ETF model is organized as a second hierarchy of the ETF prototypes, and one or more levels of the first hierarchy are missing in the second hierarchy, the processor is further configured to transform a selected subset of the ETF prototypes of the ETF model that satisfy the configuration requirements into a collection of the AMF elements organized as a hierarchy with the one or more levels missing, and build the one or more missing levels from the collection of the AMF elements based on relationships between the one or more missing levels and existing levels of the first and the second hierarchies.

12. The computer system of claim 11, wherein the computer system is further configured to:

from the ETF model, select the ETF prototypes that satisfy the configuration requirements to form the selected subset of the ETF prototypes;

create a collection of AMF Types that describe characteristics of the AMF elements based on the selected subset of the ETF prototypes and the CR model; and

create the subset of the AMF elements based on the collection of AMF Types and the CR model to form the AMF configuration.

13. The computer system of claim 11, wherein the computer system is further configured to:

transform the ETF model and the CR model into a selected ETF model and a first CR model, respectively, the selected ETF model including only the selected subset of the ETF prototypes that satisfy the configuration requirements, and the first CR model being the CR model with additional links to the selected subset of the ETF prototypes to indicate relationships with the selected subset of the ETF prototypes;

transform the selected ETF model and the first CR model into an AMF Types model and a second CR model, the AMF Types model including a collection of AMF Types that specify characteristics for corresponding AMF entities, the second CR model being the first CR model with the additional links replaced with links to the collection of AMF Types to indicate relationships with the collection of AMF Types; and

transform the AMF Types model and the second CR model into the corresponding AMF entities including components, component service instances (CSIs), service units (SUs), service instances (SIs), service groups (SGs), and applications, to complement the AMF model and form the AMF configuration.

14. The computer system of claim 11, wherein the computer system is further configured to:

select, along a first direction of moving up the second hierarchy, the set of the ETF prototypes that provide the services required by the CR model;

remove, along a second direction of moving down the second hierarchy, the ETF prototypes that do not satisfy the configuration requirements; and

remove, by examining all levels of the second hierarchy in parallel, the ETF prototypes that are not required by the configuration requirements to produce the selected subset of the ETF prototypes.

15. A non-transitory computer readable storage medium having stored therein instructions that, when executed by a computer system, cause the computer system to perform a method of generating an Availability Management Framework (AMF) configuration for providing services and protecting the services against resource failure, wherein the AMF configuration is an instance of an AMF sub-profile that defines AMF elements to be used to model resources and the services, and is generated from an instance of an Entity Type Files (ETF) sub-profile, which is called an ETF model, and an instance of a Configuration Requirements (CR) sub-profile, which is call a CR model, each of the AMF sub-profile, the ETF sub-profile and the CR sub-profile being specializations of a pre-defined Unified Modeling Language (UML) meta-model, the method comprising the steps of:

receiving the ETF model, which defines a set of ETF prototypes of the ETF model that describe the resources provided by vendors;

receiving the CR model, which defines a set of CR elements of the CR model that specify configuration requirements; and

applying a set of transformation rules, which are pre-defined for the ETF sub-profile, the CR sub-profile and the AMF sub-profile, to transform the ETF model and the CR model into an AMF model as the AMF configuration, wherein the CR model is organized as a first hierarchy of the CR elements, the ETF model is organized as a second hierarchy of the ETF prototypes, and one or more levels of the first hierarchy are missing levels in the second hierarchy, the step of applying further comprising the steps of;

transforming a selected subset of the ETF prototypes of the ETF model that satisfy the configuration requirements into a collection of the AMF elements organized as a hierarchy with the one or more levels missing; and

building the one or more missing levels from the collection of the AMF elements based on relationships between the one or more missing levels and existing levels of the first and second hierarchies.

16. The non-transitory computer readable storage medium of claim 15, wherein the step of transforming further comprises the step of:

from the ETF model, selecting the ETF prototypes that satisfy the configuration requirements to form the selected subset of the ETF prototypes;

creating a collection of AMF Types that describe characteristics of the AMF elements based on the selected subset of the ETF prototypes and the CR model; and

creating the subset of the AMF elements based on the collection of AMF Types and the CR model to form the AMF configuration.

17. The non-transitory computer readable storage medium of claim 15, wherein the step of applying further comprises the steps of:

transforming the ETF model and the CR model into a selected ETF model and a first CR model, respectively, the selected ETF model including the selected subset of the ETF prototypes that satisfy the configuration requirements, and the first CR model being the CR model with additional links to the selected subset of the ETF prototypes to indicate relationships with the selected subset of the ETF prototypes;

transforming the selected ETF model and the first CR model into an AMF Types model and a second CR model, the AMF Types model including a collection of AMF Types that specify characteristics for corresponding AMF entities, the second CR model being the first CR model with the additional links replaced with links to the collection of AMF Types to indicate relationships with the collection of AMF Types; and

transforming the AMF Types model and the second CR model into the corresponding AMF entities including components, component service instances (CSIs), service units (SUs), service instances (SIs), service groups (SGs), and applications, to complement the AMF model and form the AMF configuration.

18. The non-transitory computer readable storage medium of claim 15, wherein the method further comprises the steps of:

selecting, along a first direction of moving up the second hierarchy, the set of the ETF prototypes that provide the services required by the CR model;

removing, along a second direction of moving down the second hierarchy, the ETF prototypes that do not satisfy the configuration requirements; and

removing, by examining all levels of the second hierarchy in parallel, the ETF prototypes that are not required by the configuration requirements to produce the selected subset of the ETF prototypes.

19. The non-transitory computer readable storage medium of claim 15, wherein the AMF sub-profile is created from a collection of AMF domain elements that are specified by AMF specification, the AMF domain elements including components, service units (SUs), service groups (SGs), and applications, and wherein each of the components, the SUs, the SGs, and the applications is mapped to a UML component meta-class.

20. The non-transitory computer readable storage medium of claim 19, wherein relationships among the AMF domain elements are mapped to a plurality of UML meta-classes, the relationships including provide, type, groups and protect are mapped to a UML association meta-class, and the relationships including deploy and member node are mapped to a UML dependency meta-class.