Application Server Modeling Guru Bhat Oracle Corporation [email protected]

Copyright © 2003 Global Management Conference

June 16-19 San Jose, California

Agenda • • • • • • •

Applications Working Group Overview. Application Server Model Overview. Design Considerations. Exploring the model. Future enhancements. Useful Links. Q & A.

Copyright © 2003 Global Management Conference

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Application Group Overview • Major Activities – Application Lifecycle model (deployment). – Application Runtime model. – Java Application server model. – Management and State. – Metrics.

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Status • Java Application Server Model – Initial model in CIM 2.8 preliminary.

• Based On JSR77 • JSR Specification available on the JCP Website.

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Application Server Model Scope • Restricted to J2EE Application Server Management. • Discovery/Browsing of Managed Objects. • State Management. • Events. • Performance Monitoring.

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June 16-19 San Jose, California

Application Server Model Overview • CIM Model first released as appendix to the JSR. • Model covers • • • • •

Infrastructure Objects (J2ee Server, Domain etc). Managed Objects (EJBs, Resources, etc). Events. State Management. Performance Monitoring.

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JSR77 Inheritance Hierarchy

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Design Considerations • Fix errors and omissions in JSR77 CIM Model. • Minimize impact on existing implementations. • Align with CIM Application model. • Ease the task of Provider developers.

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Core Classes *

ManagedElement

*

See Core Model, page 1

M anagedSystem Element See Core Model, page 1

*

Dependency

Capabilities See Core Model, page 8

Component

* LogicalElement J2eeManagedObjectCapabilities

See Core Model, page 2

StateM anageable: boolean StatisticsProvider: boolean

EnabledLogicalElement

See Core Model, page 2

J2eeM anagedObject

Service

InstanceID {key} StartTime: uint32 ManagementState : uint16 {Enum}

SystemResource

System

See Core Model, page 2

See Core Model, page 2

See System Model, page 9

Start() : uint32 StartRecursive() : uint32 Stop() : uint32

J2eeJVM Name: string {Override, Key} JavaVendor: string JavaVersion: string Node : string 1..n

AdminDomain

See Core M odel, Page2

J2eeDeployedObject w

*

ApplicationSystem

J2eeDomain

DeploymentDescriptor: string

J2eeDeployedObjectsOnServer

J2eeResource

* J2eeResourcesOnServer

1 J2eeServersInDom ain

0..1

J2eeApplication

J2eeServerUsesJVMs

See Application Model

J2eeModule 1

J2eeServer

Vendor: string Version: string

1 1..n

*

1 J2eeApplicationModules

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Root Object • J2eeManagedObject • Root of JSR77 inheritance hierarchy. • Poses special problems mapping to CIM! • Contains attributes & methods inherited by all J2EE Objects – – – – –

State StartTime Start() StartRecursive() Stop()

• Linked to other J2EE Objects through CIM_LogicalIDentity.

• J2eeManagedObjectCapabilities • Contains capabilities associated with all J2EE Objects – StateManageable – EventProvider – StatisticsProvider Copyright © 2003 Global Management Conference

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Infrastructure Classes • J2eeDomain – Management domain under which J2EE objects are grouped. – Subclass of CIM_AdminDomain.

• J2EEServer – Core infrastructure object. – Subclass of CIM_ApplicationSystem. – Serves as the aggregation point for other objects. • Deployed Objects (Applications, Modules) • Resources • Java Virtual Machines Copyright © 2003 Global Management Conference

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J2EE Managed Object model ApplicationSystem EnabledLogicalElement

See Application Model

See Core Model, page 2

J2eeServletsInServer

1

J2eeResourceAdaptersInServer

J2eeServer

1

Vendor: string Version: string

Service J2eeJVM

1 See Core Model, page 2 See page 1

J2eeEJBsInServer

1..n

*J2eeResourceAdapter

J2eeEJB

*

*

1..n J2eeDeployedObject

J2eeServlet

See page 1

1..n 1..n

J2eeEntityBean

J2eeServletsInModule

J2eeMessageDrivenBean

J2eeApplicationModules

See page 1

J2eeEJBsInModule J2eeSessionBean

1

*

1

See page 1

J2eeModuleUsesJVMs

1 J2eeWebModule

J2eeStatelessSessionBean

J2eeApplication

J2eeModule

J2eeStatefulSessionBean 1

J2eeEJBModule

J2eeAppClientModule

J2eeResourceAdapterModule

1..n J2eeResourceAdaptersInModule

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J2EE Managed Objects • Hosted by a J2EE Server. – EJBs – Servlets – ResourceAdapters – Deployed Objects (Applications, Modules)

• Subclasses of CIM_Service. • Associated to the J2eeServer through subclasses of CIM_HostedService. Copyright © 2003 Global Management Conference

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J2EE Resource model SystemResource

J2eeJavaMailResource

See System Model, page 9

J2eeJMSResource

J2eeResource

See page 1 J2eeJNDIResource J2eeJDBCResource

J2eeJTAResource

J2eeJCAResource

J2eeRMI_IIOPResource

J2eeURLResource

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J2EE Resources • Subclass of CIM_SystemResource. • Utilized by J2eeServer to provide standard J2EE Services. • Associated to the aggregating server through J2eeResourcesOnServer association.

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J2EE Events Indication (Abstract)

See Event model, page 1

ProcessIndication (Abstract) See Event model, page 1

J2eeNotification IndicationIdentifier : string {override} Sequence: sint64 IndicationType: enum OtherIndicationType : string Timestamp : uint32 Message: string UserData : octetstring Copyright © 2003 Global Management Conference

• EventProvider attribute in capabilities must be set to TRUE. • Monitor changes occurring on the Server. • Event categories – Object creation/deletion – State changes – Attribute changes

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State Management • StateManageable attribute must be TRUE. • State attributes and methods represented in J2eeManagedObject. • Not all objects support state management. • A State Manageable Object generates events when its state changes.

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Performance Monitoring • Statistics Provider attribute set to TRUE. TRUE • Subclasses of CIM_StatisticalData model object specific statistics. • Linked to corresponding J2ee Objects through CIM_ElementStatisticalData.

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Future Enhancements • Work with other Applications WG groups to refine CIM Application model. • Expand model to non-J2EE environments. • Fault Management/Recovery. • Security Management. • Configuration. • J2EE Deployment (JSR88).

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June 16-19 San Jose, California

Useful Links • JSR 77 Specification. • http://www.jcp.org/en/jsr/detail?id=77

• DMTF Member Review Documents. • http://www.dmtf.org/members/review

• Want to contribute? – Join the Application Server sub-group.

Copyright © 2003 Global Management Conference

June 16-19 San Jose, California

Questions?

Copyright © 2003 Global Management Conference

June 16-19 San Jose, California