SAP TechEd 2019 CAA217 – Efficient Continuous Delivery in the SAP Ecosystem

PUBLIC
Efficient Continuous Delivery
in the SAP Ecosystem
CAA217

2PUBLIC© 2019 SAP SE or an SAP affiliate company. All rights reserved. ǀ
Speakers
Las Vegas
September 24–27, 2019
Dr. Benjamin Heilbrunn
Barcelona
October 8-10, 2019
Bangalore
November 13-15, 2019
Akhil Agarwal

The information in this presentation is confidential and proprietary to SAP and may not be disclosed without the permission of SAP.
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Disclaimer

Motivation
Introducing DevOps and Continuous Delivery
How to do Continuous Delivery
Summary
Agenda

Desired qualities
High availability Elasticity
Low cost of
development
Low cost of
operation
TCO Attractive SLAs
Software
Development
Consumers
Agility

Operations
§ Complex, manual provisioning
§ Difficult sizing of systems (peak load vs. avoiding
idle)
§ Monolith = Large failure domain
§ No elastic scaling of services
§ No “pay what you use”
Development
§ Strong technical, organizational coupling
§ Homogenous technology setting
§ High amounts of manual quality assurance tasks
§ Long development and delivery cycles
§ Many hand-overs, information barriers (how is the
system used?, are there problems?)
Challenges of status quo

How to survive?
Introducing DevOps and Continuous
Delivery

DevOps in the IT industry
Amazon
Winning Plan:
§ Break monolith into microservices
§ Teams are responsible to build, test, deploy, and operate their microservice
§ Invest into tooling that enables teams to efficiently operate their services

DevOps guiding principles
Flow aims for the quick delivery of software from development to customers.
Continuous learning and experimentation aims at establishing a culture
that motivates experimentation, risk-taking, and learning from failure.
Feedback aims to quickly sense problems in the value chain, leading to a
continuous improvement of process and product quality.
(cf. Gene Kim et. al, The DevOps Handbook, 2016)

DevOps KPIs help to manage the transformation
Flow
Lead Time to Production
(<30-60min)
§ Build duration
(5-10min)
§ Quick pull request
(< 1day)
§ Merge often
(no branch longer than 2-3 days)
§ Team WIP=0
(All for one and one for all)
Feedback
Definition of Done: Runs in
production
– Immediate feedback by
PO/customer in production
– No “Works on my machine”
§ Usage Analytics and
Metering
(Data-driven decision making)
§ A/B testing
Continuous Learning and
Improvement
§ Apply Theory of Constraints
(optimize the bottleneck)
§ Improve Quality
(Continuously lower the bar)
§ Improve Speed
§ Reduce Waste

DevOps principles facilitate success
46x
more change
deployments
440x
quicker lead times
96x
quicker time to
recovery
IT Champions
(cf. Forsgren et. al, 2017 State of DevOps Report, 2017)

Continuous Delivery
is the production, testing, and deployment of software
in short cycles
and in a reliable, fully automated manner.

Keep everything under version control
Trunk-based development, commit and merge often
Automate the build, test, and delivery process
Build every change
Test as close to production as possible
Continuous Delivery principles

DevOps and Continuous Delivery in SAP cloud applications: SAP RealSpend
> 600
test cases
~ 60 min
pipeline duration
> 90%
code coverage
up to 30
production deployments per day
>1500
productive deployments without a single planned
downtime
Decoupled, no changes to ERP
Built on the shoulders of open source
Delivered multiple times per day with
fully automated process for build, tests,
quality checks, deployment
Built and operated by a single team

So how to do Continuous Delivery…?

Manual deployment
Full control
Easy!
No special knowledge or investments
necessary

Manual deployment
Full control
Easy!
No special knowledge or investments
necessary
Slow
Repetitive effort (does not scale)
No systematically enforced quality assurance
Error-prone
Not reliable (e.g. because of heterogeneous
environment)
Not traceable

Build a Continuous Delivery Pipeline for your project
Fast deployments
Cheap deployments
Systematic quality assurance possible

Build a Continuous Delivery Pipeline for your project
Fast deployments
Cheap deployments
Additional software component
Requires new skills
Causing costs for:
§ building it
§ carrying it
§ repairing it
§ operating it (new infrastructure necessary)
Redundant efforts in projects, common pitfalls
Cargo cult (copy & paste) leaks in
1 FTE
$$$

Build a Continuous Delivery Pipeline and reuse steps between projects
Fast deployments
Cheap deployments
Project
Pipeline
Central Step
Library
E.g. Jenkins
Shared Libraries

Open source - driven by SAP
Fully containerized execution
Declarative configuration (with
value inheritance)
Standard steps
§ Build tools (maven, npm, kaniko)
§ Testing (Selenium)
§ Quality (Sonar)
SAP Tool Steps
§ MTA Build
§ UIVeri5
§ SCP Deployment (Neo, CF)
https://github.com/SAP/jenkins-library/
Project Piper provides reusable Continuous Delivery steps

Build a Continuous Delivery Pipeline and reuse steps between projects
Fast deployments
Cheap deployments
Still steep learning curve (pipeline + step
library)
User needs to ensure that steps are properly
used
User owns pipeline implementation and has to
take care of:
§ orchestration of steps (speed!)
§ compliance
§ changes in steps (implications on overall pipeline)
§ runtime environment (dependencies)

Continuous Delivery Infrastructure
Use a ready-made Continuous Delivery toolkit
No-code adoption of Continuous Delivery
No investments into building, carrying the
pipeline
Reliability ensured by packaging of
infrastructure and pipeline
Higher optimization because of less variability
Project
Central
Pipeline
Central Step
Library
Pipeline
Config
Extensions Tool
Images
+
https://jenkins.io

Recommended for applications using SAP Cloud SDK
§ SAP Cloud SDK Project Archetypes (Java + JavaScript)
§ SAP Cloud Application Programming Model (CAP)
SAP Cloud SDK Continuous Delivery pipeline
https://sap.github.io/jenkins-library/pipelines/cloud-sdk/introduction

Qualities ensured by SAP Cloud SDK pipeline
Resilience
API Consumption /
Public APIs only
Fulfillment of functional
and non-functional
requirements
Security Scans
Covers also certification-relevant qualities of apps and services

Try it yourself!
https://developers.sap.com/tutorials/ci-aws-0-introduction.html

Characteristics
§ Ready-made pipeline based on “build-once” principle
§ Suitable for cloud applications/services, libraries, Docker images, …
§ Target platform agnostic (Cloud Foundry, Kubernetes, SAP Cloud Platform Neo environment, …)
General purpose pipeline
Build tool agnostic
(docker, mta, maven, npm, …)
Cross-functional quality perspective
(unit tests, E2E tests, security, …)
“build once”
build à promote
Flexible Pull-Request voting
(“ChatOps”-like)
Option:
manual confirmation or
full automation
https://sap.github.io/jenkins-library/stages/introduction

Experiences and testimonials from the ecosystem
“Impressed to see SAP's Continuous Delivery
concept. I've never seen such a packaged
approach from SAP”
““The continuous delivery pipeline is world class.“
“
We now have project ‘Piper’ operational in several
productive Fiori application projects and it has
helped lower our time to market by increasing our
agile user story velocity. Overall, it brings us a
step further towards our overall DevOps vision and
objectives.”
“
Quantitative feedback: NPS 54–71

Project “Piper” and SAP Cloud SDK for
Continuous Delivery…
§ fuel your cloud transformation
§ help adopting Continuous Delivery easily and
efficiently
§ are fully open source
§ codify best-practices in the SAP ecosystem
§ are future-proof
Summary
https://sap.github.io/jenkins-library

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More information
Related SAP TechEd Learning Journeys
§ CAA8 – Apply DevOps in an SAP solution landscape
§ CAA5 – Extend, integrate, and embed intelligence into SAP S/4HANA
§ CAA1 – Extend SAP solutions to support your intelligent enterprise
Related SAP TechEd sessions
§ CAA381 – Taking Your DevOps Skills on SAP Cloud Platform to the Next Level
§ CAA607 – Continuous Delivery Out-of-the-Box: Your First App in Less Than 30 Minutes
§ CAA365 – Transform Classical Custom ERP Adaptations into Cloud Applications
Public SAP Web sites
§ Project “Piper” https://github.com/SAP/jenkins-library
§ SAP Cloud SDK Pipeline https://github.com/SAP/cloud-s4-sdk-pipeline
§ SAP Cloud SDK https://developers.sap.com/topics/cloud-sdk.html
§ SAP Community: www.sap.com/community
§ SAP products: www.sap.com/products

Contact for further topic inquiries
Development Expert
benjamin.heilbrunn@sap.com
Thanks for attending this session.

© 2019 SAP SE or an SAP affiliate company. All rights reserved.
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In particular, SAP SE or its affiliated companies have no obligation to pursue any course of business outlined in this document or
any related presentation, or to develop or release any functionality mentioned therein. This document, or any related presentation,
and SAP SE’s or its affiliated companies’ strategy and possible future developments, products, and/or platforms, directions, and
functionality are all subject to change and may be changed by SAP SE or its affiliated companies at any time for any reason
without notice. The information in this document is not a commitment, promise, or legal obligation to deliver any material, code, or
functionality. All forward-looking statements are subject to various risks and uncertainties that could cause actual results to differ
materially from expectations. Readers are cautioned not to place undue reliance on these forward-looking statements, and they
should not be relied upon in making purchasing decisions.
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