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Slides used by Arun P. Gupta on his "The Java EE 7 Platform: Developing for the Cloud" talk for the Codemotion 2012 in Madrid.
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The Java EE 7 Platform: Developing for the Cloud
Arun Gupta, Java EE & GlassFish Guyblogs.oracle.com/arungupta, @arungupta
2 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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.
3 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java EE 6 PlatformDecember 10, 2009
4 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java EE 6 – Key Statistics
• 40+ Million Java EE 6 Component Downloads
• #1 Choice for Enterprise Developers
• #1 Application Development Platform
• Fastest implementation of a Java EE release
5 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
6 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Today’s Cloud Offerings are all Proprietary
Infrastructure as a Service
Infrastructure as a Service
Platform as a Service
Platform as a Service
Software as a Service
Software as a Service
7 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java EE 7
We’re moving Java EE into the Cloud !
8 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java EE 7 and 8 – Focus Areas
Cloud
• Provisioning
• Elastic & Autonomic Scalability
• Multi-Tenancy
Modularity
• Building on Jigsaw
• Focus on OSGi interop
• Supporting Profiles & Modular Applications
HTML5
• Emerging Web Standards require a programming model
• JSON, WebSockets, off-line, APIs & DOM
9 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
10 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
11 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
12 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Existing Java EE model
• Configure Java EE resources – JDBC, JMS etc
• Deploy Application EAR
Database Service1
2
4
5
LDAPService
Provision and Initialize
Provision and Initialize
Provision and Initialize
Provision and Initialize
3
Messaging Service
Application Container
Deploy Application (EAR/GAR/SAR …)
13 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
Provision and Initialize
Provision and Initialize
Provision and Initialize
Provision and Initialize
3
Messaging Service
Application ContainerDeploy Application
(EAR/GAR/SAR …)
14 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
)
15 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Services
• Cloud apps consume services– Persistence, queueing, mail, caching, …
• 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”)
16 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Services
• Cloud apps consume services– Persistence, queueing, mail, caching, …
• Service metadata facilitates ease of use when deploying into the cloud@MailSession (
name=“java:app/mailSession”,
from=“[email protected]”
)
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Services
• Cloud apps consume services– Persistence, queueing, mail, caching, …
• Service metadata facilitates ease of use when deploying into the cloud@ConnectorService (
name=“java:app/myCustomConnector”,
type=“com.extraServices.customConnector.class”,
properties = {…}
)
18 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
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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”
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Walkthrough (1)DiabloCloudDiabloCloudSimplyCRMSimplyCRM
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Walkthrough (2)SimplyCRMSimplyCRM
ApplicationDeveloper
ApplicationDeveloper
AppApp
Writes
DiabloCloudDiabloCloud
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Walkthrough (3)
PaaS Account ManagerPaaS Account ManagerPaaS CustomerPaaS CustomerSigns up as a customer
SimplyCRMSimplyCRM DiabloCloudDiabloCloud
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Walkthrough (4)
ApplicationSubmitter
ApplicationSubmitter
AppApp
Submits the applicationSystem AdministratorSystem Administrator
SimplyCRMSimplyCRM DiabloCloudDiabloCloud
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Walkthrough (5)ExtraServicesExtraServices
AppAppDiscovers
DiabloCloudDiabloCloud
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Walkthrough (6)
PaaS CustomerPaaS CustomerSigns up as a customer
DiabloCloudDiabloCloudExtraServicesExtraServices
PaaS Account ManagerPaaS Account Manager
AppApp
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AppApp
Walkthrough (7)
DeployerDeployer
Customizes anddeploys the application
DiabloCloudDiabloCloudExtraServicesExtraServices
System AdministratorSystem Administrator
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AppApp
Walkthrough (8)
Provisions onCloud
infrastructure
DiabloCloudDiabloCloudExtraServicesExtraServices
System AdministratorSystem AdministratorDeployerDeployer
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Walkthrough (9)
Provisioned and Deployed App
Provisioned and Deployed App
DiabloCloudDiabloCloudExtraServicesExtraServices
System AdministratorSystem AdministratorDeployerDeployer
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Walkthrough (10)
End-UsersEnd-UsersAccess the application
DiabloCloudDiabloCloudExtraServicesExtraServices
Provisioned and Deployed App
Provisioned and Deployed App
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Walkthrough (11)
End-UsersEnd-Users Access the application
AdministratorAdministrator Administers the application
DiabloCloudDiabloCloudExtraServicesExtraServices
Provisioned and Deployed App
Provisioned and Deployed App
31 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Walkthrough (12)
Monitors
DiabloCloudDiabloCloudExtraServicesExtraServices
System AdministratorSystem Administrator
End-UsersEnd-Users Access the application
AdministratorAdministrator Administers the application
Provisioned and Deployed App
Provisioned and Deployed App
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DemoPaaSing a Java EE Application in the Cloud
glassfish.org/javaone2011
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Conference Planning in the Cloud
Java EE Application
Deploy
EJBServices Metadata
JSF JPA
<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>
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Service Provisioning
Database
Java EE Java EE Java EE. . .
Load Balancer
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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
36 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
37 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java EE 7 – Candidate JSRs
JPA 2.1
Managed Beans 1.0 EJB 3.2
CDI 1.1 / Interceptors 1.1 / JSR 250 1.1
Servlet 3.1
CDIExtension
s
JSP 2.2EL 3.0JSF 2.2
JAX-RS 2.0
WebContainer
Extensions
Bea
n V
alid
atio
n 1
.1
JMS 2.0
Jcache 1.0(JSR 107)
ConcurrencyUtilities 1.0
StateManagement 1.0
Batch Processing 1.0
JSON 1.0JTA 1.1
38 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java Persistence API 2.1
• @NamedStoredProcedureQuery, StoredProcedureQuery
• Bulk update/delete using Criteria
• User-defined functions using FUNCTION
• Persistence Context Synchronization
39 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java API for RESTful Web Services 2.0
• Client-side API
• Validation
• Hypermedia
• Alignment with CDI
• Server-side content negotiation (qs)
• Filters and Entity Interceptors
• Client-side and Server-side Async
40 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
JavaServer Faces 2.2
• Queue control for Ajax requests
• File Upload component (Non-Ajax & Ajax)
• Injection in all JSF artifacts – including converters & validators
• @FaceletsResourceResolver
• Instantiating composite components in Java
• . . .
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Contexts & Dependency Injection 1.1
• Embedded mode to startup outside Java EE container
• Global ordering of interceptors and decorators
• API for managing built-in contexts
• Send Servlet events as CDI events
• . . .
42 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Enterprise JavaBeans 3.2
• Three-part specification– Core CMT transactions on Managed Beans, Non-persistent timer
and Async method to Lite– Optional Entity Beans, JAX-RPC Web service endpoint– Interceptors
• Alignment with JMS 2.0
43 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Bean Validation 1.1
• Open: Spec, Reference Implementation, TCK
• Method-level validation
• Dependency Injection@MethodValidatedpublic class OrderService { public OrderService(@NotNull CreditCardProcessor creditCardProcessor) { //... }
public void placeOrder( @NotNull @Size(min=3, max=20) String customerCode, @NotNull @Valid Item item, @Min(1) int quantity) { //... } }
44 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Java Message Service 2.0
• Connection, Session and other objects are AutoCloseable
• Simplified API– Less verbose– Reduce the number of objects needed to send/receive message– Allow resource injection– Alternative, not replacement, for standard API– Remove JMSException, where possible
• New methods – no need for redundant arguments
45 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
46 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
Status and Schedule
• All JSRs up and running
• Early Drafts
– JSF 2.2, JAX-RS 2.0, JPA 2.1, CDI 1.1, EJB 3.2, JMS 2.0, Bean Validation 1.1
• Final release target: Q2 2013
• Date-driven release: Anything not ready will be deferred to Java EE 8
47 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
GlassFish Roadmap
2009 2010 2011
GlassFish Server 3.1.2• Bug Fixes• Incremental features
GlassFish Server 3.1• Centralized administration• Clustering / HA• GlassFish Server Control
2012
GlassFish Server 4• Java EE 7• Multitenancy• PaaS-enablement
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 3.1.1• Bug fixes• Updated components• Incremental features
2013
48 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.
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
49 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.