London Oracle Developer Meetup April 18

Phil Wilkins
Phil.Wilkins@capgemini.com
uk.linkedin.com/in/philWilkins
@PhilAtCapgemini /
@MP3Monster
Oracle-integration.cloud /
APIPlatform.cloud /
Blog.mp3monster.org
{ developer }
Luis Weir
Luis.Weir@capgemini.com
uk.linkedin.com/in/lweir
@luisw19
Soa4u.co.uk /
APIPlatform.cloud
LONDON
if ((new DateFormat()).parse (1524584530) == April 23rd 2018)

‹#›© 2017 Capgemini. All rights reserved.
• Technical Enterprise Architect specializing in
Integration and PaaS.
• Started out as a developer working on UI for Radar
• Moved into integration solutions –using Open Scr
Tech e.g. JBoss App Server & Fuse, Apache Camel etc.
• Worked in end user companies, ISVs & consultancy.
• Worked with Oracle tech for ~9yrs covering on-prem
and cloud.
About :: Phil Wilkins
Supported the
development of a
variety of books
Packt – Erl et al
Articles published
in a range of
Journals
Published 1st Oracle
iPaaS Book
Implementing ICS
PaaS Community
Jan, 2017
TOGAF 9 Certified
2013
• co-authored a book on Oracle Integration Cloud, contributing a new book on API Platform
• contributing to development of more than a dozen other titles ranging from Apache Camel to
Cloud Computing Design
• active blogger have had a number of articles published in various journals.

Publications from the Capgemini
PaaS Team
http://APIPlatform.cloud
Goes to Print Q1 2018
… Available as Alpha
(download chapters as we
finish them)
Order from …
• http://bit.ly/APIP-CS
• http://bit.ly/APIP-CS-
Amazon
https://oracle-integration.cloud
Order from …
• http://bit.ly/ImplICSBook
• http://bit.ly/ICS-Amazon
Goes to Print Q1 2018

Cloud Premier Partner
Oracle Diamond Partner
Oracle Cloud Managed Service
Provider (*New!) partner – only a
handful of SI’s
Only Global SI to be accredited as
Oracle Authorized Education Center
Part of Beta programmes for:
Cotainer Native & Microservices
Inteligent Chatbot
API platform
Integration cloud
Process cloud
Oracle Self-Service Automation
Oracle IoT Cloud
Oracle Mobile Cloud
 Continuous investments in cloud
accelerators
 5 Oracle Aces: 2 Directors, 3 Aces
 Real experts and thought leaders including
several books:
 2013: Oracle SOA Governance
Implementation
 2015: Oracle API Management
Implementation
 2016: Oracle Case Management
Solutions
 2017: Implementing Cloud service
Soon in 2018:
 Oracle API Platform CS
Implementation
 Enterprise API Management
 Several publications in OTN, Oracle
Magazine, Oracle Scene & Other
 2017 – Gold & Silver UKOUG Partner of the Year Awards
 2017 – Global Excellence Award for Extend and Connect
 2017 – API PaaS Community Award
 2017 – Chatbot PaaS Community Award
 2016 – Oracle Specialized Partner of the Year: Industry
 2016 – Oracle University Partner of the Year
 2016 – BPM and Cloud community awards
 2015 – Oracle Customer Support Services Partner of the Year
 2011 – Global Partner of the Year Award for Oracle
Applications
 2012 – Fusion Middleware partner of the year
 2010 – Partner of the year for Oracle Fusion Middleware
 2010 – 2010 EMEA Industry Partner of the Year
 2010 – Oracle Customer Services Partner of The Year
Alliance and Strategic Partnership Awards & Recognitions Thought Leadership
Article – June 17
Article – June 17
Podcast – August 17
Capgemini & Oracle

7:00pm
7:55pm
8:30pm
8:45pm
Kickoff by Phil Wilkins
A Quick Peek at Oracle
Messaging Cloud
Strawman – topics for
meetups? What works for you?
This Evening ...
Come fly with Oracle - API
design for flying drones
9:00pm
So Long and thanks for all the
Pizza - End of event
7:05pm
Identity Cloud Service - Atul
Kumar (K21 Academy)

Identity Cloud Service -
Atul Kumar
(K21 Academy)

A Quick Peek at Oracle
Messaging Cloud

What is Messaging Cloud?
Managed
through Oracle
Cloud
Core Engine
based on JMS
implementati
on – proven
& reliable
Message Push
Listener – Key
differentiator
JMS Front
end –
means we
can plugin
Legacy
solutions
Modern
REST API

Create a
Connectio
n
Connection
Object
Connection
Factory
Create a
Session
Session Object
Create a
Queue/Topic
Create a
Message
Create a
Producer
Create a
Listener
Browse
In JMS this is a JAR that needs to be
deployed and loaded into the class
path. May also need JNDI
OMCS REST API no equivalent
REST call – response will
involve holding cookie info Java call to JMS API and returns a
Java object
Cookie information and
connection managed in
server session
Java object. Connection exists as
long as java object (assuming no
server side rules to expire)
REST call including use of
cookie information.
Connection identified in URI
Java call to JMS API, includes using
Connection object
Session is named and
referenced in
URI/parameters
API call returns a java object
representing the session
REST API JMS API
Producer Object
Listener Object
Varies here – thread in vanilla Java JMS
client calling interface implementation or
could be JEE MBean
Realised by URI call to retrieve
next available message (i.e.
explicit poll) or Push Listener
established
In JSE this is an overloaded Java method
called Send
URI to create Producer which
then in path to send messages
which are the body of the call

Why Messaging Cloud Service?
Agent of Transformation
• Great vehicle for integrating Legacy JMS based solutions with new Web Service solutions
• Managed storage – there is no complexity in managing storage – done for you
• Means to establish asynchronous web service calls simply
• Hides consumer availability
• No need to worry about handling threading issues
• Protocols that are familiar compared to services such as Event Hub (Kafka).
Solution Enablement
• When using pub/sub or applying choreography based designs is far cheaper than SOA CS for
example

11© 2017 Capgemini. All rights reserved.
• Underpinning is JMS – well understood
• Proven Industry standard
• Data storage considerations completely
hidden
• Pricing model based calls per hour
• REST, JMS & Java APIs
• Rich Oracle documentation
• Event Hub simplifies complexity of Kafka,
but still requires understanding of its
foundations - Hadoop/Zookeeper
• File based under pinning – provides very
high performance as overhead of many DB
operations is eliminated
• Pricing on CPU & storage
• REST APIs
• Oracle documentation – more limited, you’re
going to have to understand Kafka
Messaging Service aka JMS
Implementation
Event Hub aka Kafka
Event Hub or Messaging Service?

Establishing
Messaging Cloud
Instance
Information required to
create an instance …

Establishing
Messaging Cloud
Instance
Instance Confirmation

Connect & create a
queue using CURL
User CURL to add
messages
Create a Consumer
– checkout the
queue and
consume messages
Look at a Listener
setup
Register a Message
Push Listener
Observe the
Message Push
Listener
Demo

Connect & Send
Messages
Demo

Consume Messages &
Push Listener
Demo

Demo
Serverless Message Push
Listener

Come Fly with Capgemini
aka
Drones with APIs

Goal …
The Idea …
• Make experimenting and talking about Oracle Tech fun by
using to do something
• We came up with Flying Drones
What’s Happened since March …
• APIs refined – still keeping to an {API 1st} approach
• To simplify we found an Opensource Go framework that
implements the basic drone controls
• Framework being wrapped and extended to match API
definitions
• Idea for a 2nd service which will provide a UI with the Drone’s
activities
• Calls incorporated so that it can be used to simulate what
the should do
• Skeleton developed by a colleague – API blueprint created
• Sharing information on a GitHub wiki

The Resources …
Git Hub Repositories
• Backend: https://github.com/oracledeveloperslondon/droneAPI
• Dashboard: https://github.com/oracledeveloperslondon/dronedash
Apiary Definitions (also held in GitHub) :
• Backend: http://dronedevmeetup.docs.apiary.io
• Dashboard: https://app.apiary.io/dronedashboard

Compute Node
Public Cloud
- API Platform
Cloud Service
Compute Node
REST APIs
Management Services
Management
Portal
Developer
Portal
Load Balancer
Any Compute
API Gateway
Runtime Derby
DB
Bundled Software
API
The drone
broadcasts its
own network -
dynamic
API Platform is
exposed on
stable LAN
Network bridge
setup needs to
be established
Observer
with App to
meet H&S
requirements

Compute Node
Public Cloud
- API Platform
Cloud Service
Compute Node
REST APIs
Management Services
Management
Portal
Developer
Portal
Load Balancer
Any Compute
API Gateway
Runtime Derby
DB
Bundled Software
API
Gateway routes
calls to API
app(s) built using
ARDrone SDK
Run gateway on
local machine to
avoid issues of
LAN to ‘net
firewalling
Simple single
instance operation
Initial development
work has adopted a
Springboot model so
we can deploy into
different tech
Apiary has all the API
documentation &
definitions of the APIs
being offered
API policies defined
in a management
cloud instance.
Gateways
configured to phone
home to get config
API policies defined
in a management
cloud instance.
Gateways
configured to phone
home to get config

Compute Node
Public Cloud
- API Platform
Cloud Service
Compute Node
REST APIs
Management Services
Management
Portal
Developer
Portal
Load Balancer
Any Compute
API Gateway
Runtime Derby
DB
Bundled Software
API
Use any (Oracle)
tech you like to
build apps that
call the APIs
Gateway running
when setup.
Can use Dredd or
Apiary mock to test
your functionality

Compute Node
Public Cloud
- API Platform
Cloud Service
Compute Node
REST APIs
Management Services
Management
Portal
Developer
Portal
Load Balancer
Any Compute
API Gateway
Runtime Derby
DB
Bundled Software
API
The complete picture …

Drone Client & API
Lifecycle
Client App
Request Drone Discovery
Get List of found drones
Send Command to selected drone
Enquire on Drone info
Shutdown
API App / Gateway
Discover Drones – record new drones
•Create Drone listener
•Cache Entry
•Command Drone with safety parameters
Receive Client commands
•Send drone command
•Receive any status change info
•Maintain a cache of drone state
Shutdown
•Command drone to emergency state

Compute Node
Public Cloud
- API Platform
Cloud Service
Compute Node
REST APIs
Management Services
Management
Portal
Developer
Portal
Load Balancer
Any Compute
API Gateway
Runtime Derby
DB
Bundled Software
API
Build control apps
using APIs
• Use Dredd to help
test or Apiary
Extend the API
definitions to offer
new features /
expose Drone
capabilities
Get involved …
Contribute to developing
of the back end to realise
required and new
services
Make development and
setup easier e.g.
• Dev VM (prebuild ARDrone)
• Script the bridging
mechanism

With more than 190,000 people, Capgemini is present in over 40 countries and
celebrates its 50th Anniversary year in 2017. A global leader in consulting, technology
and outsourcing services, the Group reported 2016 global revenues of EUR 12.5 billion.
Together with its clients, Capgemini creates and delivers business, technology and
digital solutions that fit their needs, enabling them to achieve innovation and
competitiveness. A deeply multicultural organization, Capgemini has developed its own
way of working, the Collaborative Business Experience™, and draws on Rightshore®, its
worldwide delivery model.
About Capgemini
Learn more about us at
www.capgemini.com
This message contains information that may be privileged or confidential and is
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Copyright © 2017 Capgemini. All rights reserved.
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London Oracle Developer Meetup April 18

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