Java EE 7: Developing for the Cloud Arun Gupta, Java EE & GlassFish Guy

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Java EE 7: Developing for the CloudArun Gupta, Java EE & GlassFish Guy



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.



Java EE 6 PlatformDecember 10, 2009



Top Ten Features in Java EE 6

1. EJB packaging in a WAR2. Servlet and CDI extension points3. Optional web.xml4. Type-safe dependency injection5. CDI Events6. JSF standardizing on Facelets7. EJBContainer API8. @Schedule9. EJB No Interface View10.Web Profile



Java EE 6 Implementations Fastest implementations of a Java EE release ever!



Today’s Cloud Offerings are all Proprietary

Infrastructure as Infrastructure as a Servicea Service

Infrastructure as Infrastructure as a Servicea Service

Platform as Platform as a Servicea Service

Platform as Platform as a Servicea Service

Software as Software as a Servicea Service

Software as Software as a Servicea Service



Java EE 7



Java EE 7 Focus: Platform as a Service

• Next logical step for Java EE– J2EE Java EE 6 : The Java EE Platform provides services

– Java EE 7 : The Java EE Platform IS a service

• PaaS support entails evolutionary change

• Provide way for customers and users to leverage public, private, and hybrid clouds



Java EE 7 PaaS Roadmap

• Define new platform roles to accommodate PaaS model

• Add metadata– For service provisioning and configuration– For QoS, elasticity– For sharing of applications and resources– For (re)configurability and customization

• Add useful APIs for cloud environment– JAX-RS client API, Caching API, State Management, JSON,…

• Extend existing APIs with support for multi-tenancy



Cloud Services, Not Just APIs

• Tenant applications consume services

• PaaS administrators host, configure, and manage application and infrastructure services

• Existing APIs in Java EE need to be updated to be service-enabled and tenant-aware– Example: pluggable services

Queuing Service

PersistenceService

CachingService

Security Service

Infrastructure as a Service

Platform as a Service - Services

…

Provisioning Service

FileService

PaaS Infrastructure Services

…

Java EE Application Level Services

Tenant App Tenant App Tenant App

Virt VIP VLAN Volume LBR

IaaS Infrastructure Services

…



Roles

Developer

PaaS Customer/

Tenant

Application Submitter

Application Administrator

PaaS Provider

PaaS Product Provider

PaaS Account Manager

PaaS Administrator

Deployer

Tenant 1 Tenant 2 Tenant 3

Machine

JVM JVM JVM

Machine

JVM JVM JVM

Machine

JVM JVM JVM

Machine

JVM JVM JVM

Machine

JVM JVM JVM

Machine

JVM JVM JVM



Existing Java EE model

• Configure Java EE resources – JDBC, JMS etc

• Deploy Application EAR

Database Service1

2

4

5

LDAPService

Provision and Initialize




3

Messaging Service

Application Container

Deploy Application (EAR/GAR/SAR …)



Java EE 7 Model: Auto-Provision Services from Application Dependencies

• Provision and deploy application resources (e.g. LDAP stripe, data source instantiation and connection …)

• Extensible Deployment Models Supporting Multiple Frameworks

• Spring, Seam, Play …

Database Service

Cloud Administration Service1

2

4

5

LDAPService





3

Messaging Service

Application ContainerDeploy Application

(EAR/GAR/SAR …)



Services

• Cloud apps consume services– Persistence, queueing, mail, caching, …

• Service metadata facilitates ease of use when deploying into the cloud@DataSourceDefinition(

name=“java:app/jdbc/myDB”,

className=“oracle.jdbc.pool.OracleDataSource”,

isolationLevel=TRANSACTION_REPEATABLE_READ,

initialPoolSize=5

)



Services


• Service metadata facilitates ease of use when deploying into the cloud@JMSConnectionFactory (

name=“java:app/myJMSConnectionFactory”,

resourceType=“javax.jms.QueueConnectionFactory”)

@JMSDestination(

name=“java:app/myQueue”,

resourceType=“javax.jms.Queue”)



Services


• Service metadata facilitates ease of use when deploying into the cloud@MailSession (

name=“java:app/mailSession”,

from=“[email protected]”

)



Services


• Service metadata facilitates ease of use when deploying into the cloud@ConnectorService (

name=“java:app/myCustomConnector”,

type=“com.extraServices.customConnector.class”,

properties = {…}

)



Elasticity

• Service Levels

• Minimum and Maximum Instances

• Futures – Self Adjustment, Capacity On Demand

Elasticity Continuum

Single nodeNon-Elastic

Dynamic Self AdjustingSLA Driven Elasticity

Java EE Multi-Node Multi-Instance Clustering

Java EE 7 Focus:Move the Bar Right

Java EE Cluster

Ca

Elastic ClusterCapacity

on Demand

Elastic Cluster



Example Scenario

“A software company writes an application, submits it to a PaaS provider, then any number of tenants sign up for the application, deploy it, their end users access it”



Walkthrough (1)DiabloCloudDiabloCloudSimplyCRMSimplyCRM



Walkthrough (2)SimplyCRMSimplyCRM

ApplicationDeveloper

ApplicationDeveloper

AppApp

Writes

DiabloCloudDiabloCloud



Walkthrough (3)

PaaS Account ManagerPaaS Account ManagerPaaS CustomerPaaS CustomerSigns up as a customer

SimplyCRMSimplyCRM DiabloCloudDiabloCloud



Walkthrough (4)

ApplicationSubmitter

ApplicationSubmitter

AppApp

Submits the applicationSystem AdministratorSystem Administrator

SimplyCRMSimplyCRM DiabloCloudDiabloCloud



Walkthrough (5)ExtraServicesExtraServices

AppAppDiscovers

DiabloCloudDiabloCloud



Walkthrough (6)

PaaS CustomerPaaS CustomerSigns up as a customer

DiabloCloudDiabloCloudExtraServicesExtraServices

PaaS Account ManagerPaaS Account Manager

AppApp



AppApp

Walkthrough (7)

DeployerDeployer

Customizes anddeploys the application


System AdministratorSystem Administrator



AppApp

Walkthrough (8)

Provisions onCloud

infrastructure


System AdministratorSystem AdministratorDeployerDeployer



Walkthrough (9)

Provisioned and Deployed App



System AdministratorSystem AdministratorDeployerDeployer



Walkthrough (10)

End-UsersEnd-UsersAccess the application






Walkthrough (11)

End-UsersEnd-Users Access the application

AdministratorAdministrator Administers the application






Walkthrough (12)

Monitors


System AdministratorSystem Administrator

End-UsersEnd-Users Access the application

AdministratorAdministrator Administers the application





DemoPaaSing a Java EE Application in the Cloud



Conference Planning in the Cloud

Java EE ApplicationJava EE Application

Deploy

Services Services MetadataMetadata

JSFJSF JPAJPA

http://glassfish.org/javaone2011

<glassfish-services><service-description init-type="LB" name="ConferencePlanner-lb"> <template id="LBNative"/> <configurations> <configuration name="https-port" value="50443"/> <configuration name="ssl-enabled" value="false"/> <configuration name="http-port" value="50080"/> </configurations></service-description><service-description init-type="JavaEE" name="ConferencePlanner"> <characteristics> <characteristic name="service-type" value="JavaEE"/> </characteristics> <configurations> <configuration name="max.clustersize" value="4"/> <configuration name="min.clustersize" value="2"/> </configurations></service-description>. . .</glassfish-services>



Service Provisioning

DatabaseDatabaseDatabaseDatabase

Java EE Java EE Java EE. . .

Load Load BalancerBalancer

Load Load BalancerBalancer



Multi-tenancy in Java EE 7

• Support for separate isolated instances of the same app for different tenants– One application instance per tenant– Tenants correspond to units of isolation– Multitenant apps are declared as such– Each instance customized and deployed for a single tenant– Limited form of SaaS

• Mapping to tenant done by the container

• Tenant id available to application– E.g., under java:comp/tenantId



Java EE 7 Is Not Just Cloud-y

• Alignment of ManagedBeans across CDI, EJB, JSF, …– POJO ManagedBean Enterprise JavaBean– Extension of container-managed transactions beyond EJB

• Further simplifications for ease-of-development– JAX-RS 2.0 Client API, hypermedia, bean validation, …– JMS 2.0 focus on ease-of-development– Expanded use of dependency injection– Expanded service metadata; improved configuration

• Pruning – EJB CMP and BMP, JAX-RPC, Deployment API

• Update to Web Profile



Java EE 7 – Candidate JSRs

JPA 2.1JPA 2.1

Managed Beans 1.0Managed Beans 1.0 EJB 3.2EJB 3.2

CDI 1.1 / Interceptors 1.1 / JSR 250 1.1CDI 1.1 / Interceptors 1.1 / JSR 250 1.1

Servlet 3.1Servlet 3.1

CDIExtension

s

CDIExtension

s

JSP 2.2EL 3.0

JSP 2.2EL 3.0JSF 2.2JSF 2.2JAX-RS

2.0JAX-RS

2.0

WebContainer

Extensions

WebContainer

Extensions

JMS 2.0JMS 2.0

Jcache 1.0(JSR 107)Jcache 1.0(JSR 107)

ConcurrencyUtilities 1.0

ConcurrencyUtilities 1.0

StateManagement 1.0

StateManagement 1.0

Batch Processing 1.0

Batch Processing 1.0

JSON 1.0JSON 1.0JTA 1.1JTA 1.1



Transparency

• Oracle’s Java EE 7 JSRs are run in the open on java.net– http://javaee-spec.java.net– One project per spec – e.g., jpa-spec, jax-rs-spec, jms-spec…

• Publicly viewable Expert Group mail archive– Users observer list gets copies of all Expert Group emails

• Publicly viewable download area

• Publicly viewable issue tracker

• Commitment to update to JCP 2.8 Process



Status and Schedule

• All JSRs up and running

• Early Drafts: JSF 2.2, JAX-RS 2.0, JPA 2.1, CDI 1.1

• Final release target: Q3 2012

• Date-driven release: Anything not ready will be deferred to Java EE 8



GlassFish Roadmap

20092009 20102010 20112011

GlassFish Server 3.1.2•Bug Fixes•Incremental features

GlassFish Server 3.1.2•Bug Fixes•Incremental features

GlassFish Server 3.1•Centralized administration•Clustering / HA•GlassFish Server Control

GlassFish Server 3.1•Centralized administration•Clustering / HA•GlassFish Server Control

20122012

GlassFish Server 4•Java EE 7•Multitenancy•PaaS-enablement

GlassFish Server 4•Java EE 7•Multitenancy•PaaS-enablement

GlassFish v3•Java EE 6 support•Single instance•GlassFish Enterprise Mgr

GlassFish v3•Java EE 6 support•Single instance•GlassFish Enterprise Mgr

GlassFish Server 3.0.1•Oracle branding•Oracle platform support•Oracle interoperability

GlassFish Server 3.0.1•Oracle branding•Oracle platform support•Oracle interoperability

GlassFish Server 3.1.1•Bug fixes•Updated components•Incremental features

GlassFish Server 3.1.1•Bug fixes•Updated components•Incremental features



Call to Action

• Java EE 7 Expert Group Project

– http://javaee-spec.java.net

• Java EE 7 Reference Implementation

– http://glassfish.org

• The Aquarium

– http://blogs.oracle.com/theaquarium



Java EE 7: Developing for the CloudArun Gupta, Java EE & GlassFish Guyblogs.oracle.com/arungupta, @arungupta,[email protected]



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Java EE 7: Developing for the Cloud Arun Gupta, Java EE & GlassFish Guy