Experiences in building a PaaS Platform - Java One SFO 2012

Experiences in building a PaaS platformBhavanisankara SapaligaJagadish Ramu

Conference Session - CON7735

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Program Agenda

• Cloud Computing• PaaS and Java EE• PaaS implications on application deployment• Design Model• Service Orchestration• Resources

Cloud Computing

• 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

What’s new?

(+) Above the Clouds, Armbrust et al, UC Berkeley, 2009

Cloud Computing

• On-demand Self-Service• Broad network access• Resource Pooling• Rapid Elasticity• Measured Service

Essential Characteristics

(*) NIST Definition of Cloud Computing – 800-145 (Draft)

Cloud Computing

• 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

Deployment Models

Cloud Computing

• 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)

Service Models

Program Agenda

PaaS and Java EE

• Common programming model for enterprise developers• Runtime handles application’s infrastructure concerns• Declarative resource references• Scalable (scale-out) component models

Java EE design principles and capabilities

PaaS and Java EE

• Enhancements– New Roles for PaaS– Services as first class citizens– Multitenancy

• Evolution, not a revolution!

Java EE 7: “Making Java EE ready for the cloud”

New PaaS Roles in Java EE 7

• PaaS Product Vendor• PaaS Provider• PaaS Account Manager• PaaS Customer• Application Submitter• Application Administrator• End-User

Java EE 7 Roles in a PaaS scenario

Program Agenda

PaaS Implications on Deployment• Simplified PaaS Application Deployment

– Single-click, self-service, “push to cloud”

PaaS Implications on Deployment

• 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

Services Management

• Scalable virtualized on-demand environment– Support multiple cloud deployment models

• Public, Private, Hybrid– PaaS Provider decoupled from IaaS infrastructure– Multi-tenancy

Virtualized runtimes

• 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

Scaling and Operations

A sample application stack

Traditional Java EE Application Deployment

DemoClassic Deployment

Java EE PaaS Application Deployment

DemoPaaS Deployment

Program Agenda

Service Orchestration

Enable single-click deployment of a PaaS application through automatic service dependency discovery, service provisioning and service association

One-liner

Terminology

• Service• ServiceType

– Java EE, RDBMS, HTTP Load Balancer etc.• Services – scope and lifecycle

– Provisioned Services• Application scoped• Shared

– External (a priori ) services

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

Design Model

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

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