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Continuous IntegrationHow I stopped guessing if that merge was bad
Joe Fergusonhttps://joind.in/14016
Continuous Integration? Continuous Deployment?
Continuous Integration
Frequently integrate code changes into the existing code repository
Merging branches to master/production
Automated build tests to ensure issues found quickly
Does not have to be deployed
Continuous Delivery
Produce valuable changes in code in short cycles to be released at any time.
AKA: Continuous Deployment
Automated build tests to ensure issues found quickly
Deployment happens on successful build
Continuous Integration or
Continuous Delivery
Which is right for you?
Your goal should be Continuous Integration (at least!)
Strive for Continuous Delivery if it makes sense
Applications with a live event component may not be suited for Continuous Delivery
The Problem
2 Developers and now scaling up
No longer 1 developer == 1 project
Version control is the obvious answer
What happens if the team just learning version control?
Story Time!
Our Problem
Scaling up meant more developers contributing to same code bases
Previously 1 developer per codebase
Our Process
Master always deployable / not broken
Feature branching off master
Feature branches merged to dev/staging
dev/feature merged to master (release / deploy)
What we needed
Private build testing
Cheap or Free (had to prove value to stakeholders / managers)
Customizable for some pretty uncommon things (So we thought)
There are a lot of CI solutions out there
Travis-CI.org
Great for OSS
Private projects require paid account
Not hosted on your infrastructure
Jenkins-CI.org
Self hosted (Bring your own hardware)
Great flexibility and support
Just didn't click for me
Great Atlassian integrations
Utilizes Amazon’s EC2 for build agents
Greater appeal if you’re already using Atlassian and Amazon products
https://www.atlassian.com/software/bamboo
Fully Functional Free Version (Limited Configs & Build Agents)
Enterprise option (unlimited configs, more build agents)
Self hosted (Bring your own hardware)
Runs on Windows / OS X / Linux
Installation
You’ll need Java installed
Configure Database (or use internal TeamCity)
Just want to poke around a bit?
https://github.com/curzona/vagrant-teamcity
Create Admin Account
Ready to start building!
Create a new project
Create a VCS Root
Create a Build Config
Attach VCS to Config
Auto Detected Build Steps
Add Build Steps
Step 1 Composer Install
Step 2 Run phpunit
2 Steps to Build
Running our first build
Build Log
Detailed Output
Detailed Output
Successful Build!
Failed Build :(
When a build fails the steps after will not run*
*sometimes you do want a step to run
What happened?
Oh, Class not found
Finding the breaking change
Finding the broken rev
Revert Change
Build Passes
Questions so far?
Now for something more complex…
Fork in the road…
Testing real things can be hard
Manually create these sites / databases
Docker
Vagrant
Build Test a Web App
Create Build Config
Add VCS Root
Quick NoteYou can add VCS Roots before or after you create a build configuration.
In our first example we did it before, in this example we did it after.
Adding Build Steps
Run DB Migrations
Seed the Database
Run PhantomJS
Copy files to vhost
Run Codeception
Stop PhantomJS
Reset Database
Test Our Build
Verifying our Tests
Automate our builds
Other Triggers
Now we have automatic VCS triggered built tests
What next?
Deployments can be a build step away!
Deployment
https://github.com/laravel/envoy
Envoy Deployment
https://github.com/laravel/envoy
Anything you can script can be a part of your build
Some CI pain points
You have to duplicate your production environment within TeamCity / other CI service
Starting out there will be a lot of trial & error
Don’t forget to back up your CI server configs!
Payoff is better than the pain
Quick feedback on commits
Confidence level of your merges is huge
Less time resolving conflicts
Automate your deployments
Advanced build notifications
Feedback!
https://joind.in/14016
Joe FergusonTwitter: @JoePFerguson
Email: [email protected]: joepferguson
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