Java EE 7 at JAX London 2011 and JFall 2011

The Java EE 7 Platform: Developing for the Cloud
Arun Gupta, Java EE & GlassFish Guy
blogs.oracle.com/arungupta, @arungupta
1 Copyright © 2011, 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.


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


Java EE – Developer Adoption
Downloads
40 Million+
45

Millions

40

35

30

25

20

15

10

5

0

FY
06
FY
07
FY
08
FY
09
FY
10
FY
11
FY
12


Java EE 7


Today’s Cloud Offerings Are Vendor-Specific

Infrastructure as Platform as Software as
a Service a Service a Service

…


Java EE 7 Focus: Platform as a Service

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

•  PaaS support entails evolutionary change

•  Next logical step for Java EE
–  J2EE à Java EE 6 : The Java EE Platform provides services
–  Java EE 7 : The Java EE Platform IS a service


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

Roles

Developer
PaaS Provider

PaaS
Customer/ JVM JVM JVM JVM JVM JVM JVM JVM JVM
Tenant Machine Machine Machine PaaS Product
Provider

JVM JVM JVM JVM JVM JVM JVM JVM JVM
Deployer
Machine Machine Machine PaaS Account
Tenant 1 Tenant 2 Tenant 3 Manager
Application
Submitter
PaaS
Administrator
Application
Administrator


Java EE 7 Focus Area: Cloud Services, Not Just
APIs
•  In the cloud tenant applications Tenant App Tenant App Tenant App

consume services Java EE Application Level Services
Queuing Persistence Caching
•  PaaS administrators host, Service Service Service
…

configure, and manage
PaaS Infrastructure Services
application and infrastructure Security Provisioning File
…
services Service Service Service

Platform as a Service - Services
•  Existing APIs in Java EE need to
IaaS Infrastructure Services
be updated to be service-enabled
and tenant-aware Virt VIP VLAN Volume LBR …

–  Example: pluggable services, late binding Infrastructure as a Service
and tenant id injection

Old Java EE model
Database
1
Provision and Initialize Service
•  Configure Java EE resources –
JDBC, JMS etc LDAP
Service
Deploy Application EAR
2
Provision and Initialize
• 

Messaging
3
Service

Application
4

Container

5
Deploy Application (EAR/
GAR/SAR …)


Java EE 7 Model: Auto-Provision Services
from Application Dependencies
• Provision and deploy application 1
Provision and Initialize Cloud Administration Service

resources (e.g. LDAP stripe, data
source instantiation and Database
Service
connection …) 2

•  Extensible Deployment Models LDAP
Supporting Multiple Frameworks 3
Provision and Initialize Service
•  Spring, Seam, Play …
Messaging
4

Service

Application
5
Deploy Application (EAR/
GAR/SAR …)
Container


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

into the cloud
@JMSConnectionFactory (
name=“java:app/myJMSConnectionFactory”,
resourceType=“javax.jms.QueueConnectionFactory”)

@JMSDestination(
name=“java:app/myQueue”,
resourceType=“javax.jms.Queue”)


Services

into the cloud
@MailSession (
name=“java:app/mailSession”,
from=“MyService@ExtraServices.com”
)


Services

into the cloud
@ConnectorService (
name=“java:app/myCustomConnector”,
type=“com.extraServices.customConnector.class”,
properties = {…}
)


Java EE 7 Focus Area: Elasticity
Java EE 7 Focus:
Move the Bar Right

Elasticity Continuum

Java EE Cluster Elastic Cluster
Elastic Cluster
Capacity
Ca
on Demand

Single node Java EE Multi-Node Dynamic Self Adjusting
Non-Elastic Multi-Instance Clustering SLA Driven Elasticity

•  Service Levels
•  Minimum and Maximum Instances
•  Futures – Self Adjustment, Capacity On Demand

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)
SimplyCRM
DiabloCloud


Walkthrough (2)
SimplyCRM
DiabloCloud

Applica3on

Developer

Writes

App


Walkthrough (3)
SimplyCRM
DiabloCloud

Signs up as a customer
PaaS
Customer
PaaS
Account
Manager


Walkthrough (4)
SimplyCRM
DiabloCloud

Submits the application
Application System
Administrator

Submitter

App


Walkthrough (5)
ExtraServices
DiabloCloud

Discovers
App


Walkthrough (6)
ExtraServices
DiabloCloud

Signs up as a customer
PaaS
Customer
PaaS
Account
Manager

App


Walkthrough (7)
ExtraServices
DiabloCloud

Deployer
System
Administrator

Customizes and
deploys the application

App


Walkthrough (8)
ExtraServices
DiabloCloud

Deployer
System
Administrator

Provisions on
Cloud
infrastructure

App


Walkthrough (9)
ExtraServices
DiabloCloud

Deployer
System
Administrator

Provisioned and
Deployed App


Walkthrough (10)
ExtraServices
DiabloCloud

Access the application
End-‐Users
Provisioned and
Deployed App


Walkthrough (11)
ExtraServices
DiabloCloud

End-‐Users

Provisioned and
Deployed App

Administrator
Administers the application


Walkthrough (12)
ExtraServices
DiabloCloud

System
Administrator

Monitors

End-‐Users

Provisioned and
Deployed App

Administrator
Administers the application


Demo
PaaSing a Java EE Application in the Cloud


Conference Planning in the Cloud

Java EE Application

JSF JPA Deploy

Services
EJB Metadata
<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">
http://glassfish.org/javaone2011 <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

Load
Balancer

Java EE Java EE ... Java EE

Database


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 or by injection


Java EE 7 Focus Area: Application Level Multi
Tenancy
•  Goal: Simple configuration
•  Flexible tenant discriminator support
•  Other areas impacted - JNDI, JMS, EJB …
@Entity

@Table(name=“EMP”)

@MultiTenant(SINGLE_TABLE)
depart_id DEPT_ID
@TenantDiscriminator(name=“company-‐id”,
columnName=“COMPANY”)

public
class
Employee
{

EMP
EMP_ID VERSION F_NAME L_NAME GENDER DEPT_ID
1 1 John Doe M 1
2 3 Jane Doe F 2

SELECT
*
FROM
EMPLOYEE
WHERE
L_NAME
LIKE
‘D%’
AND
DEPT_ID=
1


Persistence Layer
Multi-tenant Taxonomies
•  Dedicated App, Dedicated Database
•  Shared App, Dedicated Database
•  Dedicated App, Shared Database
•  Shared App, Shared Database


Dedicated App, Dedicated Database
Persistence Layer Multi-Tenant Taxonomies

App is configured for tenant-id
at bootstrap and connects to
the data source


Shared App, Dedicated Database

App knows tenant-id and
connects with the tenant-specific
data source


Dedicated App, Shared Database

Tenant-id configured at bootstrap
and connects to tenant-specific table
or striped table


Shared App, Shared Database

App knows tenant-id and
connects to tenant specific
table or striped table


Java EE 7 Is Not Just Cloud-y

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

•  Further simplifications for ease-of-development
–  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

Web Jcache 1.0
JAX-RS JSP 2.2
Conainer
2.0 JSF 2.2 (JSR 107)
CDI Extensions EL 3.0
Extensions

Bean Validation 1.1
Concurrency
Servlet 3.1 Utilities 1.0

State
CDI 1.1 / Interceptors 1.1 / JSR 250 1.1 Management 1.0

Batch
Managed Beans 1.0 EJB 3.2 Processing 1.0

JPA 2.1, JTA 1.1 JMS 2.0 JSON 1.0


Transparency
•  Our 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 match JCP 2.8 Process


Status and Schedule

•  Nearly all JSRs up and running
•  Remaining ones to be filed in next few weeks
•  Final release target: Q3 2012
•  Date-driven release: anything not ready will be
deferred to Java EE 8


How to Get in the Loop

•  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


The Java EE 7 Platform: Developing for the Cloud
Arun Gupta, Java EE & GlassFish Guy
blogs.oracle.com/arungupta, @arungupta

Java EE 7 at JAX London 2011 and JFall 2011

Recommended

More Related Content

What's hot (20)

Similar to Java EE 7 at JAX London 2011 and JFall 2011 (20)

More from Arun Gupta (20)

Recently uploaded (20)

Java EE 7 at JAX London 2011 and JFall 2011