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2. PaaSing a Java EE Application
Kshitiz Saxena
Jagadish Ramu
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3. San Francisco
September 30–October 4, 2012
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4. The following is intended to outline our general product direction. It is intended for
information purposes only, and may not be incorporated into any contract. It is not a
commitment to deliver any material, code, or functionality, and should not be relied
upon in making purchasing decisions. The development, release, and timing of any
features or functionality described for Oracle’s products remains at the sole discretion
of Oracle.
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5. Agenda
• Cloud Computing
• PaaS and Java EE
• PaaS implications on application deployment
• Design Model
• Resources
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6. Cloud Computing
What’s new?
Illusion of infinite computing resources available on
demand
Elimination of an up-front commitment by cloud users
Ability to pay for use of computing resources on a short-term
basis
(+) Above the Clouds, Armbrust et al, UC Berkeley, 2009
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7. Cloud Computing
Essential Characteristics
On-demand Self-Service
Broad network access
Resource Pooling
Rapid Elasticity
Measured Service
(*) NIST Definition of Cloud Computing – 800-145
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8. Cloud Computing
Deployment Models
Private Cloud
– Operated solely for an organization
– On-premise or off-premise
Community Cloud
Public Cloud
– Access to general public
Hybrid Cloud
– 2 or more clouds, Cloud Bursting
(*) NIST Definition of Cloud Computing – 800-145
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9. Cloud Computing
Service Models
Software as a Service (SaaS)
Platform as a Service (PaaS)
– Deploy customer-created applications
– Using languages and tools supported by PaaS Provider
– No control of underlying cloud infrastructure
– Control over deployed applications, hosting env. Configurations
Infrastructure as a Service (IaaS)
(*) NIST Definition of Cloud Computing – 800-145
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10. Program Agenda
Cloud Computing
PaaS and Java EE
PaaS implications on application deployment
Design Model
Resources
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11. PaaS and Java EE
Java EE design principles and capabilities
Common programming model for enterprise developers
Runtime handles application’s infrastructure concerns
Declarative resource references
Scalable (scale-out) component models
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12. PaaS and Java EE
Java EE 7: “Making Java EE ready for the cloud”
Enhancements
– New Roles for PaaS
– Services as first class citizens
– Multitenancy
Evolution, not a revolution!
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13. New PaaS Roles in Java EE 7
PaaS Product Vendor
PaaS Provider
PaaS Account Manager
PaaS Customer
Application Submitter
Application Administrator
End-User
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14. Java EE 7 Roles in a PaaS scenario
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15. Program Agenda
Cloud Computing
PaaS and Java EE
PaaS implications on application deployment
Design Model
Resources
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16. PaaS Implications on Deployment
Simplified PaaS Application Deployment
• Single-click, self-service, “push to cloud”
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17. PaaS Implications on Deployment
Services Management
Automatic Service Provisioning and Management
– Service Orchestration
• Automatic Service Dependency discovery
• Service Provisioning and Association
– Handle operational infrastructure concerns automatically
• Network configuration, HA, Clustering, Load Balancing …
– Application and Service deployment versioning
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18. PaaS Implications on Deployment
Virtualized runtimes
Scalable virtualized on-demand environment
– Support multiple cloud deployment models
• Public, Private, Hybrid
– PaaS Provider decoupled from IaaS infrastructure
– Multi-tenancy
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19. PaaS Implications on Deployment
Scaling and Operations
Automatic Scaling of Services
– Scale to application’s needs
– User-defined alerts and actions
Control over application hosting environment
– Flexibility in choice of application services, framework
– Rich service configuration
– Shared services
– Extensible runtime to allow new Services
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20. A sample application stack
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21. Traditional Java EE Application Deployment
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22. Java EE PaaS Application Deployment
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23. Demo
PaaSing a Java EE Application in the Cloud
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24. Conference Planning in the Cloud
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25. PaaS Deployment for Demo
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26. Program Agenda
Cloud Computing
PaaS and Java EE
PaaS implications on application deployment
Design Model
Resources
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27. Terminology
Service
ServiceType
– Java EE, RDBMS, HTTP Load Balancer etc.
Services – scope and lifecycle
– Provisioned Services
• Application scoped
• Shared
– External (a priori ) services
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28. Specification of Service Metadata
Optional!
– When not specified (vanilla EE app archives)
• Orchestration Engine automatically handles discovery of service deps
• Automatic wiring to default Service Templates
– Metadata may be specified when:
• Finer grain control of application environment desired
• Application-specific Service configuration
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29. Design Model
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30. Specification of Service Metadata
Service Definition
– Metadata used to provision and configure a Service
• What : Service characteristics (functional and non-functional) → Template matching
• How : Explicit Template specification → Template wiring
Service Reference
– An application component’s dependency on a Service
• Explicit : User-specified through deployment descriptors
• Implicit and Discovered: Information contained within the archive
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31. Service Dependency Specification
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32. Sample Service Definition
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33. Sample Service Reference
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34. GlassFish PaaS Runtime Architecture
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35. Service Orchestration Flow
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37. Program Agenda
Cloud Computing
PaaS and Java EE
PaaS implications on application deployment
Design Model
Resources
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38. Resources
For more information
GlassFish 4.0 http://download.java.net/glassfish/4.0/promoted/
– Spec http://bit.ly/sAZtEL
– Java EE 7 keynote demo http://bit.ly/q9T7Z2
Java EE 7 http://jcp.org//en/jsr/detail?id=342
– PaaS Model http://bit.ly/o3XZIP
Above the Clouds: A Berkeley View of Cloud Computing
http://bit.ly/15MEL0
The NIST Definition of Cloud Computing -- Special Publication 800-
145 http://1.usa.gov/ohXnlM
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39. Q&A
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41. Classic Duke Future Tech Duke
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