IBM Z Powers API-Driven Hybrid Cloud

1 © 2015 IBM Corporation© 2017 IBM Corporation
Z
IBM Z and it’s place in an Innovative Journey
Frank van der Wal
thewall@nl.ibm.com
Digital Transformation Specialist, IBM Europe

2 © 2017 IBM Corporation2 © 2017 IBM Corporation2 © 2017 IBM Corporation2 © 2017 IBM Corporation
2
The digital shift: consumerisation of IT; digital business
and the API Economy

The Hybrid Cloud Challenge… fueled by the API Economy
sources: programmableweb.com, venturescanner.com
Over 18,401 public APIs and Growing
https://www.programmableweb.com/category/all/apis

The Hybrid Cloud Challenge… fueled by the API Economy
sources: programmableweb.com, venturescanner.com
Over 18,401 public APIs and Growing
https://www.programmableweb.com/category/all/apis
Flexibility and speed to market of new solutions
Monetization of existing back-end services
Reuse of existing applications
Novel, Innovative and Enhanced client experiences
Applications do not (necessarily) have to be re-written

Building the solution for an API Economy

6 © 2017 IBM Corporation6 © 2017 IBM Corporation
Just to get in sync…
REST API
Application
Programmable
Interface
To interact with IT resources ‘somewhere else’
We need VERBs

REST API
https://maps.googleapis.com/maps/api/geocode/json?latlng= 49.6073558,6.1082088
transport server path query
A typical request for retrieving data from a remote IT resource
A typical request for creating an IT resource
A typical request for updating an IT resource

REST API
To exchange data REST uses as a format:
{
"First_Name": "John",
"Last_Name" : "Smith",
"Address" : ”Downing Str",
"City" : "London",
"Sex" : "M",
"ZIP" : "60601"
}
{ "results" : [
{ "address_components" : [
{ "long_name" : "2",
"short_name" : "2",
"adminstration” : "rooftop",
"types" : [ "street_number" ]
},
...

REST API
https://maps.googleapis.com/maps/api/geocode/json?latlng=49.6073558,6.1082088

Right … OK REST API and JSON. Got it… (I think). But I’ve got:
How to get to:

IBM to the rescue à z/OS Connect Enterprise Edition
z/OS Connect!

z/OS Connect’s purpose in life:
{
"ca_return_code": 0
"ca_response_message": "ORDER SUCCESSFULLY PLACED"
}
https://server.com/catalogManager/orders
CICS
IMS
DB2
MQ
IBM Z

Data
Conversion
Discovery
Function
Audit
Function
Logging
Function
Granular
Authorization
CICS
IMS
DB2
Custom
REST client
REST
JSON
MQ
WAS z/OS
3rd Party
Service
Provider
z/OS Connect EE V3 runtime
1. Liberty is provided as a runtime.
2. Backend connectivity is provided with "service provider" code.
3. ‘Interceptors" and provide function that is called for each request that arrives.
4. Both the "service provider" and "interceptor" interfaces are extensible.
1
3
2
4
Liberty z/OS Runtime
z/OS Connect EE V3
… all is done by configuring, not coding!

What about calling external APIs from my z/OS assets?
14

Use API requester to call external APIs from z/OS assets
15

APIs in the enterprise…
So, we have APIs into IBM Z resources…
16
Enterprise
Applications
Enterprise
Data
Enterprise
Transaction
Processing
CICS
IMS
Batch
WAS
Systems of Record
• Expose them?
• Rate-limit them?
• Socialise them?
• Secure them?
• Monitize them?
• Integrate them?
• ...

Building the solution
An enterprise solution for Develop,
Secure, Run and Manage APIs
An enterprise solution for securely
exposing IBM Z assets as REST APIs

An example
Banking
Intelligent
Virtual
Assistant
Interacts with
Customer on vacation
Cloud & Cognitve API Banking Industry
https://www.youtube.com/watch?v=bOc3rtq4UHo

Natural
Language
Classifier
Conversation Alchemy
Language
Text to SpeechSpeech to Text
Input data
Output data
Region :
§ Virtual Banking Advisor defined by :
§ A Chatbot (for communicating)
§ A Cognitive Engine (for thinking and making decisions)
Implementation
Customer on Vacation
Interacts with Cognitive
Engine
chatbot

The Hybrid Cloud: IBM Z as an equal contributor
Application
Application
Application
Application
Microservices
applications
µService
µServiceµService
µService
Suite of Enterprise API services
Surfaced
APIs

The Hybrid Cloud: IBM Z as an equal contributor
Application
Application
Application
Application
Microservices
applications
µService
µServiceµService
µService
Suite of Enterprise API services
Surfaced
APIs
Internet of
Things

Give it a go!
http://ibm.biz/ibmztrial

API ENABLE EXISTING APPS TO OPEN
NEW BUSINESS OPPORTUNITIES
IBM Z Digital
Transformation
IBM Z Digital Transformation Journey
z/OS Connect EE
CHOOSE THE RIGHT PLATFORM TO
LEVERAGE THE RIGHT SKILLS
Application
Performance
Management
EMBRACE COGNITIVE DEV
& OPS TO REDUCE COSTS
AND IMPROVE RESILIENCY
IOAz
CDP
z/OSMF
OPTIMIZE DEV & OPS TO
IMPROVE BUSINESS
AGILITY

© Copyright IBM Corporation 2017. Technical University/Symposia materials may not be reproduced in whole or in part without the prior written permission of IBM.
IBM Systems Technical Events – ibm.com/training/events
© 2017 IBM Corporation
The Motivation for Modern Languages on IBM Z

Modern Application Design
Public Cloud Services
On-prem Services
User-facing Client Apps
Things / Sensors
End Users

Skills: Millions of Available Developers
Public Cloud Services
On-prem Services
User-facing Client Apps
Things / Sensors
End Users
Developer Experience
Java
Node.js
Swift
Java
Node.js
Swift
Java
Node.js
Swift

What is Node.js ?
• Server-side JavaScript platform
• Built on Google's V8 JavaScript engine
• Designed to build scalable network applications
• Lightweight and efficient
• Uses an event-driven, non-blocking I/O model

What is Node.js ?

What is Node.js ?
• Server-side JavaScript platform
• Built on Google's V8 JavaScript engine
• Designed to build scalable network applications
• Lightweight and efficient
• Uses an event-driven, non-blocking I/O model
• Module-driven, highly scalable approach to application design and development
• Emerging as the favoured choice for digital transformation
• Steadily establishing its place within enterprises

Why Node.js?
• 510k modules and growing!
• NPM: Node Package Manager
• Repository of community
contributed modules
(Sep. 2017 – modulecounts.com)
Productivity
• Event-driven, single-threaded
model
• Enables organizations to
efficiently deploy their
development resources
Simplicity
• Node.js leverages the underlying
async I/O support in z/OS
• Thousands of concurrent
connections with minimal
overhea
• Best suited for data-intensive
(I/O bound) applications.
Scaleable

Basic node.js code…
var http = require ("http");
var server = http.createServer( function (request, response) {
// Send the HTTP header
// HTTP Status: 200 : OK
response.writeHead(200, {'Content-Type': 'text/plain'});
// Send the response body as "Hello World"
response.end('Hello Worldn');
});
server.listen( 8081);
// Console will print the message
console.log('Server running at http://127.0.0.1:8081/');
Require module “http” and assign it to variabele “http”
http is an object with several methods
Make a new instance of http and call it “server”
The callback function is given a “request” and “response”
variabele.
Comments
http header dictates which information will be sent back
Send info to client
Start server and listen to port 8081
Console log displays infor

Usage Scenarios
Lift and Shift to take advantage of co-location of Node.js applications with critical assets on z/OS (i.e.,
applications and data)
• Significantly reduce response time for accessing data and increase transaction throughput
Orchestration
• Manage MicroServices and APIs
Caching of Read-only transactions
Presentation Layer
• Dashboard and Portals
Selectively offload CICS and IMS transactions
• Use Node.js for serving content that does not require high performance
• Easier and cheaper to develop

© Copyright IBM Corporation 2017. Technical University/Symposia materials may not be reproduced in whole or in part without the prior written permission of IBM.
IBM Systems Technical Events – ibm.com/training/events
© 2017 IBM
Corporation
Swift

Swift Ecosystem
34IBM Z / © 2017 IBM Corporation
WWDC 2014
Apple releases a new
programming language
called “Swift”
WWDC 2015
Apple announces
to open source
Swift
“Swift is growing
faster than anything
else we track”
June 2014
June 2015
July 2015
Nov. 2015
Apple releases Swift
as Open Source.
Dec. 3,
2015
Jan. 2016
Programming Language
Rankings Swift “meteoric rise”
continues. “Swift moves up one
spot from #18 to #17 Y/Y…and
is within hailing distance of out
Tier 1 languages”.
Introducing the
IBM Swift Sandbox
Feb 2016
IBM InterConnect
2016
IBM to bring Swift to the
cloud to radically
simplifying end-to-end
development of apps
Swift #2 “Most Loved”
Nov. 2016
Mar. 2016
Tokyo
Sep. 2016
NYC
IBM Bluemix
Runtime for Swift
ü Industry backing
ü Developers acceptance
ü Tools & packages
ü Conferences & meetups

Why Swift?
Safe
Modern
4 4.3
15.8
134.2
0
20
40
60
80
100
120
140
160
Duration(s)
(lowerisbetter)
Performance: Fast
15
32.2
25.3
54.6
0
10
20
30
40
50
60
MemoryUsage(MB)
(lowerisbetter)
Performance: Low
Memory
Type Safe
Automatic Initialization

We have already started the journey
• IBM has been working with the open source community to improve Swift for
the server platform, with many changes already integrated into Swift 4.0 and
onward
• IBM has already enabled LinuxONE on IBM Swift Sandbox
• IBM has pushed all code for LinuxONE to github
• Swift 3.0 was open source released in September 2016 with full LinuxONE
support
• IBM is working to bring Swift to z/OS to modernize the whole z ecosystem
(contact us to join our beta program).

Wrap up
Digital Transformation fueled by the API Economy
IBM Z assets can be surfaced as, and call REST APIs
IBM Z is an equal contributor in the Hybrid Cloud space
Modernization on IBM Z --> new languages --> Full Stack developers

IBM Z Powers API-Driven Hybrid Cloud

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