controlling technical debt with continuous delivery

@raquelpau @alexsotob#Voxxed

Controlling Technical Debt with Continuous Delivery

Raquel Pau - Alex Soto WalkMod - RedHat

W A L K M O D F O U N D E R

B E S T P R A C T I C E S E N T H U S I A S T

@ R A Q U E L PA U

R A Q U E L PA U

R E D H AT E N G I N E E R

O P E N S O U R C E A D V O C AT E

@ A L E X S O T O B

A L E X S O T O

Q U E S T I O N S

S O F T WA R E I S E AT I N G T H E W O R L D

FASTERSOONERBETTER

W H AT I S C O N T I N U O U S D E L I V E RY ?

D E L I V E R B U S I N E S S VA L U E M O R E F R E Q U E N T LY

O R C H E S T R AT I N G T H E B U I L D

M I C R O S E R V I C E S A N D

C O N T I N U O U S D E L I V E RY

N O M O R E J O B S P L E A S E

P I P E L I N E A S C O D E

F E AT U R E S O F P I P E L I N E E C O S Y S T E M

Configuration in Source Repository

Less click-and-type, more code

From simple to complex

Survives Jenkins restarts & connection losses

Reusable definitions

Build history/trend segregated per branches

pipeline { agent any stages { stage('Test') { steps { sh './gradlew check' } } } post { always { junit 'build/reports/**/*.xml' } } }

pipeline { agent { docker { image 'maven:3-alpine' args '-v "$PWD":/usr/src/mymaven -w /usr/src/mymaven’ } } stages { stage('Example Build') { steps { sh 'mvn -B clean verify' } } } }

stage('Deploy - Staging') { steps { sh './deploy staging' sh './run-smoke-tests' } } post { (TODO test) failure { mail to: 'team@example.com', subject: "Failed Pipeline: ${currentBuild.fullDisplayName}", body: "Somethig is wrong with ${env.BUILD_URL}" } }

stage('Sanity check') { steps { input "Does the staging environment look ok?" } }

T W O - P I Z Z A T E A M S

Fabric 8: Features

Create Build

Release Runtime Manage

Feedback Platform

wizards to create microservices packaging into multiple container images rolling upgrades across teams environments service discovery, scaling, failover, load balancing centralise logs, metrics, alerts, tracing, circuit breaker dashboards and metrics to get feedback on premise, public or hybrid cloud

D I V E R S I F I E D T E A M S

A N D O N E D AY… T E C H N I C A L D E B T S TA RT E D

T O R E D U C E D E B T W E N E E D

M E T R I C S A N D T O O L S

feature#1234

feature#1354

C O N T I N U O U S I N S P E C T I O N

@SupressWarnings(“PMD”) mvn pmd:check

M A N Y C O D I N G S T Y L E R U L E S A R E A U T O M AT I C A L LY F I X E A B L E

mvn walkmod:patch gradle walkmodPatch

I T I S A L L A B O U T C O D E T R A N S F O R M AT I O N Spublic void visit(ImportDeclaration n, VisitorContext vc) { if (n.getUsages().isEmpty()){ n.remove(); } }

* K I L L E R F E AT U R E * F O R M AT P R E S E R VAT I O N

T R U S T T O O L S O R

E N S U R E T E S T C O V E R A G E

F I X - U P S R E C I P E

mvn walkmod:patch

git apply walkmod.patch mvn test

git commit -a —fixup HEAD

git pull —rebase origin $branch git push origin HEAD:$branch

feature#1354git commit -a --fixup HEAD

C O N T I N U O U S F I X I N G S

P I P E L I N E L I B R A RY#!groovy @Library('github.com/walkmod/jenkins-pipeline-shared@maven')

… stage('Fixing Release') { steps { walkmodApply( validatePatch: false, branch:'master', alwaysApply: true, alwaysFail: true ) } }

WA L K M O D P I P E L I N E A P I

walkmodApply: fixes your build

hasWalkmodPatch: checks if there are fixings

applyWalkModPatch: applies the patch

pushWalkModPatch : pushes the patch

D E M O

I N C R E M E N TA L E X E C U T I O N

M I C R O - S E R V I C E S - S TA R T I T N O W

L E G A C Y C O D E - A P P LY T H E M I N C R E M E N TA L LY

WA L K M O D H U B

Q U E S T I O N S