This presentation talks about how to migrate an existing Java EE applications onto IBM's Bluemix cloud platform, which is based CloudFoundry.

1. © 2015 IBM Corporation
Migrating Java EE applications to
IBM Bluemix Platform-as-a-Service
David Currie
Jack Cai

2. Understand the Basics:
Cloud, Bluemix, Cloud
Foundry

3. Traditional Deployment
• Slow to set up
• Expensive
• Manage everything
• Maintain security
• Lots of waste
You
Manage
Networking
Storage
Servers
O/S
Middleware
Runtime
Database
Application
2

4. Cloud Service Models
Infrastructure as a Service (IaaS)
Platform as a Service (PaaS)
Software as a Service (Saas)
3

5. Pizza as a Service
4

6. Cloud Service Models
• Public Cloud
• Over the internet
• Fast & cheap
• Private Cloud
• More control
• Hybrid Cloud
• Interconnected
5

7. Build Your Own Cloud
Use virtualized WebSphere
App Server on your hardware
IaaS – Amazon
BYOS&L - WebSphere App
Server
PaaS - Bluemix
Composable services
WebSphere Liberty Profile
Pure Application Systems
Build reusable & redeployable
patterns using the WebSphere
App Server
PaaS - Cloud Foundry
WebSphere Liberty Build
Pack
IaaS - SoftLayer
BYOS&L - WebSphere App Server
Public Cloud
Economies
Time to Market
Shared Everything
Economics
Packaged Services
Total Control
Maximum Flexibility
Maximum Security
On-Premises IaaS PaaS
WebSphere Application Server - Flexibility in cloud
6

8. WebSphere Application Server
• One solution, multiple deployment options
• Right fit your application server
• WebSphere Application Server Liberty Core for web
applications
• Network Deployment for maximum availability, scale, and QOS
• Right fit your deployments
• Traditional for maximum security, control, flexibility, and SOR
• IaaS for hybrid environments and peak workloads
• PaaS for Systems of Engagement
• Integrated across deployment platforms
• Move between platforms with license mobility
• Move at your own pace
On Premise
On Cloud
7

9. Bluemix was built from the ground up with a user-based and design-centric approach.
It addresses these personas and key needs.
Our users include novice,
born-on-the-cloud, and
enterprise developers.
Want to compose
applications quickly with
useful APIs, to avoid
tedious backend config.
Expect fast time-to-value,
simplicity, flexibility, clear
documentation.
Failing
Fast
Seconds to
Deploy
Friction
Free
Any
Language
Continuous
Integration
Mobile
Ready
Focus on
Code
Choice of
Tools
Useful
APIs
Bluemix Goals:
Focus on the Cloud & Enterprise Application Developer
8

10. Bluemix: IBM‟s Cloud Platform
• DevOps
• Big Data
• Mobile
• Watson
• Business Analytics
Bluemix service categories
• Database
• Web and application
• Security
• Internet of Things
• Integration
• Containers
• Virtual Machines
Developer experience
• Rapidly deploy and scale
applications in any language.
• Compose applications quickly
with useful APIs and services
and avoid tedious backend
config.
• Realize fast time-to-value with
simplicity, flexibility and clear
documentation.
Enterprise capability
• Securely integrate with existing
on-prem data and systems.
• Choose from flexible
deployment models.
• Manage the full application
lifecycle with DevOps.
• Develop and deploy on a
platform built on a foundation of
open technology.
Built on a foundation of open
technology.
Build, run, scale, manage, integrate & secure applications in the cloud
9

11. Bluemix embraces Cloud Foundry as an open source Platform as a
Service and extends it with IBM, third party, and community built runtime
and services.
How does Bluemix work?
10

12. Key Concepts
• cf: the command line tool used to interact with the
CloudFoundry environment, via the cloud controller component
• Buildpack: a collection of code responsible for transforming
pushed application artifacts into a ready-to-run droplet, in a
process referred to as „staging‟
• Droplet: a package containing everything that is needed in
order to successfully run your application (e.g. JRE, Liberty, the
application itself) short of the operating system
• Service: the means of providing runtime dependencies needed
by an application, e.g. a database
• Warden: the containerization mechanism used to achieve
application isolation in the CloudFoundry environment
11

13. Cloud Foundry Architecture
12

14. IBM Confidential June 7, 2013
Application Push
• Push a stand-alone application to the cloud
• cf push –p <path to file>
• Default server configuration provided by the buildpack
13

15. Application Staging
Buildpack
14

16. WebSphere Liberty Buildpack
• Buildpack for running applications on IBM WebSphere
Application Server Liberty Profile
• Designed to run “packaged” servers, web applications and EAR
packages
• Generates the Liberty server configuration for bound services
• Simplifies developers‟ lives by requiring minimal configuration
and making it easy to consume services
• Loads into the server only what is needed for a running
application
• https://github.com/cloudfoundry/ibm-websphere-liberty-
buildpack
15

17. Service Integration with the Liberty buildpack
• IBM services
• SQLDB / dashDB
• Monitoring and Analytics
service
• Auto-Scaling
• Single Sign On
• Data Cache
• Session Cache
• MQ Light
• Cloudant
• Third party/community services
• New Relic
• mysql / ClearDB
• Postgresql / ElephantSQL
• mongodb / MongoLab
Information about bound services is
available in the VCAP_SERVICES env var
Some services are container managed only
(SessionCache)
Some services can be either container
managed or application managed (SQLDB)
Some services contain multiple features
which can be separately enabled
(Monitoring and Analytics)
Some services have local analogs
(SQLDB, mongo) and some do not
(Monitoring and Analytics)
Services may require client driver JARs,
extension features (WXS ESA), Liberty
features, bootstrap.properties
16

18. Migrating your code

19. social
x2020
monitoring
workload
decision
database
sms
mobile
push
geolocation
Incremental Progression
18

20. Programming model gaps: Java EE 6
Java EE 6 Web
Profile
WAS Liberty profile WAS Full profile
JSONP 1.0
JSON 1.0
Servlet 3.1
Web Socket 1.0
Concurrent 1.0
JAXB 2.2
CouchDB
MongoDB
Open ID 2.0
OAuth 2.0
JCA 1.6
JMS 1.1
JAX-WS 2.2
MDB 3.1
Java EE 6 Web
Profile
EJB Remote, 2.x, Timers
Java Mail 1.5
JACC 1.5
JASPIC 1.1
Java 2 Security
JavaMgmt 1.1
EnterpriseWS 1.4
*JAXR/UDDI
*JAX-RPC
JCA 1.6
JMS 1.1
JAX-WS 2.2
MDB 3.1
Java EE
App
Client
*deprecated
by Java EE
19

21. Coding Do‟s and Don‟ts
• Stateless
• Ephemeral file system
• Ephemeral memory
• Ports
• Security
• Avoid creating new process
instances
• Avoid writing to the local file
system
• Capture log information
• HTTP session persistence
• Listening for inbound
connections
• Stopping the server
• Transport security is
terminated at the router
• Two-phase commit
transactions
20

22. The Twelve Factor App – http://12factor.net/
1. One codebase tracked in revision control, many deploys
2. Explicitly declare and isolate dependencies
3. Store config in the environment
4. Treat backing services as attached resources
5. Strictly separate build and run stages
6. Execute the app as one or more stateless processes
7. Export services via port binding
8. Scale out via the process model
9. Maximize robustness with fast startup and graceful shutdown
10. Keep development, staging, and production as similar as
possible
11. Treat logs as event streams
12. Run admin/management tasks as one-off processes
21

23. DayTrader
• Performance benchmark app
• Java EE 6
• Uses database for persistence
• The application or database does
not scale
• “System of Record”
• Nothing cloud about it!
22

24. Deploy DayTrader to Bluemix
• Tooling to help migrate
• IBM WebSphere Application Server Migration
Toolkit V8.5.5
– Liberty Technology Preview
• Talks to either a cloud or on-premise database
• Value-Add
• Application can scale horizontally
• Load balancing
• High availability
23

25. Database
• Use database services provided by Bluemix
• Powerful auto-configuration features makes it easy to consume!
@Resource (name = "jdbc/mydb")
private DataSource db;
“mydb” is the name of the service
instance created in Bluemix
24

26. Scaling of the runtime
• Scale up and down in seconds!
• Condition based scaling
25

27. Session Persistence and Caching
• WebSphere eXtreme Scale
• Distributed object caching
• Session off-load and replication
26

28. Other Application Services
27

29. Adoption of other services – Make it Engaging!
• Rules Engine
• Use Business Rules to monitor stocks, portfolio and perform
actions when criteria is met
• Social
• View friends portfolio
• Post tweets and collaborate on stock transactions
• Stay connected w/ tweets related to your portfolio
• Push/SMS
• Instant notifications to buy or sell
• Cloud Integration
• Export backend interfaces as a service
• Single Sign-On
• Improve authentication
• Watson
• Add real intelligence to your application!
28

30. On-premiseservices
SQLDB
Session
Cache
Monitoring &
Analytics
Bluemix
WAS Liberty Runtime
IBM JRE
WAS Liberty Buildpack
Session
Cache
Twilio
29

31. © 2014 IBM Corporation
For Additional Information
• IBM Bluemix
http://bluemix.net
• IBM Training
http://www.ibm.com/training
• IBM WebSphere
http://www-01.ibm.com/software/be/websphere/
• IBM developerWorks
www.ibm.com/developerworks/websphere/websphere2.html
• WebSphere forums and community
www.ibm.com/developerworks/websphere/community/
30

32. Notices and Disclaimers
Copyright © 2015 by International Business Machines Corporation (IBM). No part of this document may be reproduced or
transmitted in any form without written permission from IBM.
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Any statements regarding IBM's future direction, intent or product plans are subject to change or withdrawal without
notice.
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The provision of the information contained herein is not intended to, and does not, grant any right or license under any
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