continuous deployment of clojure apps
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Continuous Deployment of Clojure Apps
Siva Jagadeesan
1Tuesday, April 30, 13
“I am big believe in Continuous Deployment as
long as is not touch production.”
DevOps Borat@DEVOPS_BORAT
2Tuesday, April 30, 13
Continuous Deployment
Deploying every change to Production
Optionally a short QA gate
Practice of releasing every good build to users
“continuous release”
3Tuesday, April 30, 13
Continuous Deployment
Release is in the hands of IT
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Continuous Deployment
Release is in the hands of IT
is this a good thing?
4Tuesday, April 30, 13
Continuous Deployment
Release is in the hands of IT
is this a good thing?
NO!
4Tuesday, April 30, 13
Continuous Deployment
Release is in the hands of IT
is this a good thing?
dependsBusiness Reason
NO!
4Tuesday, April 30, 13
Continuous Delivery
Release is in the hands of Business
5Tuesday, April 30, 13
Continuous Delivery is about keeping your
application in a state where it is always able to deploy
into production.
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Continuous Deployment of Clojure Apps
Siva Jagadeesan
Delivery
7Tuesday, April 30, 13
Process
TechnologyPeople
ContinuousDelivery
8Tuesday, April 30, 13
Who am I?
Siva Jagadeesan
Interests
• Clojure • REST• Datomic• Continuous Deployment• TDD• Startups
• Founder & CTO, Zolo Labs Inc• Director of Engineering, Runa Inc•@sivajag• siva@zololabs.com• http://blog.zololabs.com• http://techbehindtech.com
About Me
9Tuesday, April 30, 13
• first product from Zolo Labs
• Your digital assistant
• helps with professional networking and relationships
• (and personal ones too!)
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Why Continuous Delivery?
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Our highest priority is to satisfy the customer through early and continuous delivery of valuable
software
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13Tuesday, April 30, 13
Our Goal
• deliver high-quality, valuable software in an efficient, fast, and reliable manner
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Continuous Integration
16Tuesday, April 30, 13
Continuous Integration
development team
16Tuesday, April 30, 13
Continuous Integration
development team
code
16Tuesday, April 30, 13
Continuous Integration
development team
code
requirements
process of delivering software
whole team
16Tuesday, April 30, 13
Continuous Delivery
development team
code
requirements
process of delivering software
whole team
17Tuesday, April 30, 13
Benefits
• Improved Team Attitude
• More Responsive Team
• Less Waste
• Deployment Flexibility
• Less Pressure
• Less Bugs
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Process
TechnologyPeople
ContinuousDelivery
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Principles• The process for releasing/deploying software MUST be repeatable and reliable
• Automate everything!
• If something is difficult or painful, do it more often
• Keep everything in source control
• Done means “released”
• Build quality in!
• Everybody has responsibility for the release process
• Improve continuously
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Deployment Pipeline
is an automated manifestation of your process for getting software from version
control into the hands of your users.
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AimAids collaboration by making the process of building, testing and releasing software visible to everyone involved
Improves Feedback
Team can deploy any version of software to any environment at will without much effort
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image from wiki
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Deployment PipelineStages
Commit Stage
Automated Acceptance Test Stages
Manual Test Stages
Release Stage
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Deployment Pipeline
image from continuous delivery book
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Deployment PipelineBest Practices
Only build binaries once
Deploy the same way to every environment
Smoke test your deployments
Each change should propagate through the pipeline instantly
If any part of the pipeline fails, stop the line
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Process
TechnologyPeople
ContinuousDelivery
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This is easy ...
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Deployment PipelineStages
Commit Stage
Automated Acceptance Test Stages
Manual Test Stages
Release Stage
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Commit Stage
Compile (if needed)
Run tests
Create Binaries / Artifacts
Perform analysis of the code
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Commit StageCompile
lein compile
lein -U
to force retrieve latest snapshots
lein profiles
with-profile
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Commit StageRun Tests
lein test
lein test-selectors
to force retrieve latest snapshots
lein plugins
lein-cucumber
lein-difftest
lein-expectations
lein-midje
32Tuesday, April 30, 13
Commit StageCreate Binaries / Artifacts
lein uberjar
profiles to create different uberjars
Plugins
lein-dist
lein-tar
lein-set-version
lein-sha-version
lein-package
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Commit StagePerform analysis of the code
lein-cloverage
lein-bikeshed
Kitbit - https://github.com/jonase/kibit
Eastwood - https://github.com/jonase/eastwood
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Acceptance and Manual Test Stages
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Types of tests
image from continuous delivery book
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Clojure Web UI Testing
clj-webdriver
webdriver-logic [uses core.logic]
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Release Stage
• lein run
• chef
• puppet
• pallet
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to sum up ...
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Process
TechnologyPeople
ContinuousDelivery
40Tuesday, April 30, 13
Deployment Pipeline
image from continuous delivery book
41Tuesday, April 30, 13
Continuous Delivery
development team
code
requirements
process of delivering software
whole team
42Tuesday, April 30, 13
Benefits
• Improved Team Attitude
• More Responsive Team
• Less Waste
• Deployment Flexibility
• Less Pressure
• Reducing Errors
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Start doing continuous delivery to deliver high-quality, valuable software in an efficient, fast, and reliable manner.
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Questions?
• @sivajag
• siva@zololabs.com
• http://blog.zololabs.com
• http://techbehindtech.com
• zolodeck.com
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