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Git Workflow Strategies for Technical Debt Management
- 1. #techdebt @raquelpau Git WorkflowStrategies for Technical Debt Management Raquel Pau @raquelpau http://walkmod.com
- 2. #techdebt @raquelpau About me… •EngProd Team member at Schibsted • WalkMod Founder • Almost 10 years of experience in Java • Speaker at several occasions • Legacy Code Rocks BCN organizer
- 3. #techdebt @raquelpau SOFTWARE ISEATING THE WORLD
- 4. #techdebt @raquelpau TECHNICAL DEBTGENERATES THE FEAR OF CHANGE
- 5. #techdebt @raquelpau IF ITWORKS, DO NOT CHANGE IT
- 6. #techdebt @raquelpau Category BestPractise Knowledge Debt Continuous Inspection (Code Review) Testing Debt Continuous Integration Infrastructure Debt Continuous Delivery TECHNICAL DEBT CATEGORIES
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- 8. #techdebt @raquelpau SMALL ANDVERIFIED PATCHES
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- 12. #techdebt @raquelpau MEASURE BUSINESSVALUE MORE FREQUENTLY
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- 20. #techdebt @raquelpau Features ofPipeline Ecosystem • Configurations in Source Repositories • Less click-and-type, more code • From simple to complex • Survives Jenkins restarts & connection losses • Reusable definitions • Build history/trend segregated per branches
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- 27. #techdebt @raquelpau Fabric 8:Integrated Development Platform Create Wizards to create micro-services Build Packaging into multiple container images Release Rolling upgrades across teams environments Runtime Service discovery, scaling, failover, load balancing Manage Centralise logs, metrics, alerts, tracing, circuit breaker Feedback Dashboards and Metrics to get feedback Platform On premise, public or hybrid cloud
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- 29. #techdebt @raquelpau AND ONEDAY TECHNICAL DEBT STARTED
- 30. #techdebt @raquelpau TO REDUCEDEBT WE NEED METRICS AND TOOLS
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- 35. #techdebt @raquelpau MANY CODING STYLERULES ARE AUTOMATICALLY FIXEABLE
- 36. #techdebt @raquelpau mvn walkmod:patch gradlewalkmodPatch
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- 38. #techdebt @raquelpau public voidvisit(ImportDeclaration n, VisitorContext vc) { if (n.getUsages().isEmpty()) { n.remove(); } } It is all about code transformations
- 39. #techdebt @raquelpau * KILLERFEATURE * FORMAT PRESERVATION
- 40. #techdebt @raquelpau TRUST TOOLS OR ENSURETEST COVERAGE
- 41. #techdebt @raquelpau mvn walkmod:patch gitapply walkmod.patch mvn test git commit –a –fixup HEAD git pull –rebase origin $branch git push origin HEAD:$branch Fix-Up Recipe
- 42. #techdebt @raquelpau CONTINUOUS FIXINGS feature#1354 gitcommit -a --fixup HEAD
- 43. #techdebt @raquelpau #!groovy @Library(‘github.com/walkmod/jenkins-pipeline-shared@maven’) … stage(‘Fixing Release’){ steps { walkmodApply( validatePatch: false, branch: ${branch}, alwaysApply: true, alwaysFail: true ) } } Pipeline Library
- 44. #techdebt @raquelpau walkmodApply: fixesyour build hasWalkmodPatch: checks if there are fixings applyWalkModPatch: applies the patch pushWalkModPatch: pushes the patch WalkMod Pipeline API
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- 46. #techdebt @raquelpau Incremental Execution Microservices- Start it now Legacy Code - apply them incrementally
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- 48. #techdebt @raquelpau • Fearof Changing • Release each commit! • Pipelines in Git • Microservices management • Continuous Fixing • Legacy Code Management
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