Technology Primer: Building Applications the New-Fashioned Way

Technology Primer: Building Applications
the New-Fashioned Way
Chris Kraus
DevOps: Continuous Delivery
CA Technologies
Product Manager
DO4X125S
@ChrisKraus3
#CAWorld

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For Informational Purposes Only
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World 2015 is intended for information purposes only and does not form any type of warranty. Some of the specific slides with customer
references relate to customer's specific use and experience of CA products and solutions so actual results may vary.
Certain information in this presentation may outline CA’s general product direction. This presentation shall not serve to (i) affect the rights
and/or obligations of CA or its licensees under any existing or future license agreement or services agreement relating to any CA software
product; or (ii) amend any product documentation or specifications for any CA software product. This presentation is based on current
information and resource allocations as of November 18, 2015, and is subject to change or withdrawal by CA at any time without notice. The
development, release and timing of any features or functionality described in this presentation remain at CA’s sole discretion.
Notwithstanding anything in this presentation to the contrary, upon the general availability of any future CA product release referenced in
this presentation, CA may make such release available to new licensees in the form of a regularly scheduled major product release. Such
release may be made available to licensees of the product who are active subscribers to CA maintenance and support, on a when and if-
available basis. The information in this presentation is not deemed to be incorporated into any contract.

Abstract
Welcome to the application economy, where every company
is a software company. You are challenged to build applications
faster, cheaper and better, but can't seem to achieve all three
goals at the same time. In this presentation, you will learn
where the bottlenecks occur in application development and
how you can spot defects earlier in the process, automate your
testing and build better apps. CA Continuous Application Insight
provides deep transaction insight into your Web and mobile
applications, allowing developers to identify issues much earlier,
make changes and produce cleaner code. The result is a better
app and a dramatically improved customer experience.
Chris Kraus
CA Technologies
Product Manager

Agenda
HOW ARE YOU BUILDING APS? FROM CONTRACT OR ON TOP OF LEGACY?
VISIBILITY WHEN BUILDING ON TOP OF INHERITED APPLICATIONS
Q&A
FIND THOSE SLOW ITEMS AND LOG MESSAGES
VIRTUALIZE AWAY YOUR BLOCKERS
GENERATE API TESTS AS YOUR CONSUMPTION CONTRACTS
1
2
3
4
5
6

Are You Building Your Applications From Contract
or on Top of Legacy?
 New mobile or web development means you get
the edge of technology
– Latest platform iOS, Android, Chrome and Firefox browsers
with HTML5
– REST, JSON, Swagger 2.0
 User Journeys are on the tip of the tongue
for developers and Product Owners
 Contracts first development helps team
collaborate on data

Early Development – Contract Based First
GET http://10.139.4.170:3434/cars-app/api/validate HTTP/1.1
{
"access_token": "br73egja4qkcdd7mnf3dvgtfe6d9o053”,
"firstname": "chris",
"lastname": "kraus",
"roles": [
"ROLE_USER"
],
"token_type": "Bearer",
"username": "chrisk"
}
/cars-inventory/carInventory
[
{
"carTrim": "Premium Plus",
"class": "com.ca.lisa.demo.CarInventory",
"color": "Silver",
"dealer": {
"address": "3800 Motor City Dr",
"city": "Denver",
"class": "com.ca.lisa.demo.CarDealer",

Contract First Development – Simplicity in Moving Parts
 Generate virtual service from:
– Specifications
– Samples
 Hosted Service Virtualization
for Developers
 Azure – CA Service Virtualization
 On premise CA Service Virtualization
RAML
Swagger 2.0
WSDL
WADL
Sample
Request
Response
data

Bi-Modal IT Building Applications on Top of Existing
Systems and Systems of Record
 New visualization
and workflows
 Heavy dependencies
on legacy systems for
data
 Multiple layers of
black boxes in
technology
ESB

How to I figure Out What is Below the UI
and if I Can Leverage?
 Deploy DevTest agents
 Run transactions
in the system
 CA Continuous
Application Insight
provides the details
ESB

CA Continuous Application Insight
MOVE FROM THE WHITEBOARD DRAWING TO LIVE SYSTEMS VIEWS

Payload Visibility

Find Those Slow Items and Log Messages –
the Easy Way
 Modern applications are composites
of multiple backend servers
 During development is the best place
to start thinking of performance
 Assumption is code does not magically get
relatively faster on different hardware
 Finding the slow part in a path is now
easily visualized in portal

Find Slow Code and Blockers

Use Counts in Paths

Find Those Slow Items and Log Messages –
the Easy Way
 Great thing about system logs is there’s tons of data in there
 Problem is log files can be 100 of megabytes
 Finding reoccurring error messages is difficult and requires slicing
and dicing
 Understanding the code emitted the message requires code access
 It is even more difficult to understand the context of the application
that emitted the message

Payload Visibility Log Messages in Context of Transaction

Most Common Called Code

Types of Code Run with Response and Logs

Most Common Log Messages

Exceptions Thrown in Code

Virtualize Away Your Blockers
 Visibility comes with advantages, you can view
and isolate your development
 Virtualize away
– 1 step away from your development work
– Problem or unreliable systems
– Test data problems
 Build regression tests at API layer for any layer of the application
 Build the DevTest Sandwich to more robust regression testing

Start High Level with Your Application Topology

Virtualize Away a Server Used by Multiple Clients

Generate API Regression Tests Automatically

Isolate Systems with DevTest Sandwich
ESB
 Use API tests to simulate
the system or regress
functionality
 Stabilize the backend
system response time,
data, and availability
with virtual services
 Consistency on either side
of the SUT isolates
changes and provides less
false failures in testing

Generate API Test’s as Your Consumption Contracts
 As a consumer of API’s you owe API tests that represent your use of the
API to the service producers
 API tests provide a easy to run contract of consumption, UI testing usually
involves unnecessary system setup and brittle tests
 API tests create horizontal trust across organizational boundaries, move
test closer to the application, and earlier in the SDLC
 Failing tests is a much better warning of changings in application behavior
than failing complex multi-layered applications

Document Transactions to API Functional Tests

Building Horizontal Trust
 Consumers of shared
services or common API’s
exist across business
unit boundaries
 Mistrust prevents leveraging
common services
Mobile
Accounts
Rich Client
Accounts
Treasury
Services
Shared Services
Common API’s
1 Small Change no one will notice
Application failures

Building Horizontal Trust
 Failing regression tests
are opportunities to
resolve failures before
production
 API tests can be run on
partially deployed
systems early in CD
workflow
Mobile
Accounts
API Tests
Rich Client
Accounts
API Tests
Treasury
Services
API Tests
Shared Services
Common API’s
1 Small Change no one will notice
Regression failures

Q & A

Demo – User Journey API tests
Generate
Functional
test
Document
Transactions
Generate
Functional
test
Chrome plugin

Handle Dynamic
Data
The user data along with
returned data from the
application is dynamic.
Generated tests are data
driven and parameter driven to
ensure they actually run.
Follow the user
Journey
Applications are API’s used in
the order of the User Journey
through the application. The
order of the API’s makes a
difference.
Generate API test
API tests are easily generated
to follow the user journey. The
API’s are more stable then
automating the UI’s.
The API’s should be leveraged
in multiple applications.
Summary
A Few Words to Review

Recommended Sessions
SESSION # TITLE DATE/TIME
DO3X113S
Case Study: DBS Shares Its Continuous Delivery Journey
as a Global Financial Institution
11/19/2015 at 3:00 pm
DO3X114S
Freeing the World from Slow: How Service Virtualization
and the Concept of S.P.E.E.D. Will Steer You Away from
Committing Continuous Delivery Suicide
11/19/2015 at 3:45 pm
DO3T22S
Business Transformation: DevOps for a 10-Year-Old
(Codebase)
11/19/2015 at 4:30 pm

Must See Demos
Application
Test Demo
Create Better
Application Tests
Theater 4
DevOps Sim
DevOps Simulation
Experience
Theater 3
Continuous
App Insight
Automate Tests for
Better Apps
Theater 4
Service
Virtualization
Deliver Better Apps
Faster with SV
Theater 3

Follow On Conversations At…
Smart Bar
Theaters 3 & 4
Tech Talks
Theaters 3 & 4

For More Information
To learn more, please visit:
http://cainc.to/Nv2VOe
CA World ’15

Technology Primer: Building Applications the New-Fashioned Way

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Technology Primer: Building Applications the New-Fashioned Way