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<!DOCTYPE html>

<title>Continuous Integration - Full Stack Python</title>

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<span class="logo-title"><a href="/">Full Stack Python</a></span>

</div>

</div> <div class="row">

<h1>Continuous Integration</h1>

<p>Continuous integration (CI) automates building, testing and deploying

applications.</p>

<h2>Why is continuous integration important?</h2>

<p>When CI is set up well it can dramatically reduce deployment times by

eliminating manual steps and ensure code does not have bugs that are being

checked by automated tests. Source code changes as a project evolves.

CI combined with unit and integration tests check that code modifications

do not break existing tests ensure the software works as intended.</p>

<h2>Continuous integration example</h2>

<p>The following picture represents a high level perspective on how continuous

integration and deployment can work. </p>

<p>In the above diagram, when new code is commited to a source repository

there is a hook that notifies the continuous integration server that new

code needs to be built (the continuous integration server could also

poll the source code repository if a notification is not possible).</p>

<p>The continuous integration server pulls the code to build and test it. If

all tests pass, the continuous integration server begins the deployment

process. The new code is pulled down to the server where the deployment is

taking place. Finally the deployment process is completed via restarting

services and related deployment activities.</p>

<p>There are many other ways a continuous integration server and its

deployments can be structured. The above was just one example of a

relatively simple set up.</p>

<h2>Open source CI projects</h2>

<ul>

<li>

<p><a href="http://jenkins-ci.org/">Jenkins</a> is a common CI server for building and

deploying to test and production servers.

<a href="https://github.com/jenkinsci/jenkins">Jenkins source code is on GitHub</a>.</p>

</li>

<li>

<p><a href="http://www.go.cd/">Go CD</a> is a CI server by

<a href="http://www.thoughtworks.com/">ThoughtWorks</a> that was designed with best

practices for the build and test & release cycles in mind.

<a href="https://github.com/gocd/gocd">Go CD source code is on GitHub</a>.</p>

</li>

<li>

<p><a href="http://stridercd.com/">Strider</a> is a CI server written in node.js.

<a href="https://github.com/Strider-CD/strider">Strider source code is on GitHub</a>.</p>

</li>

<li>

<p><a href="http://buildbot.net/">BuildBot</a> is a continuous integration <strong>framework</strong>

with a set of components for creating your own CI server. It's written in

Python and intended for development teams that want more controller over

their build and deployment pipeline.

<a href="https://github.com/buildbot/buildbot">BuildBot source code is on GitHub</a>.</p>

</li>

</ul>

<h2>Hosted CI services</h2>

<ul>

<li>

<p><a href="https://travis-ci.org/">Travis CI</a> provides free CI for open source

projects and has a <a href="https://travis-ci.com/">commercial version</a> for

private repositories.</p>

</li>

<li>

<p><a href="https://www.atlassian.com/software/bamboo">Bamboo</a> is

<a href="https://www.atlassian.com/">Atlassian</a>'s hosted continuous integration that

is also free for open source projects.</p>

</li>

<li>

<p><a href="https://circleci.com/">Circle CI</a> works with open or closed source projects

on GitHub and can deploy them to Heroku if builds are successful.</p>

</li>

<li>

<p><a href="https://www.shippable.com/">Shippable</a> uses Docker containers to speed

the build and integration process. It's free for public repositories.</p>

</li>

<li>

<p><a href="https://drone.io/">Drone</a> is another CI service that also provides free

builds for open source projects.</p>

</li>

<li>

<p><a href="https://www.codeship.io/">Codeship</a> provides continuous integration for

Python 2.7.</p>

</li>

<li>

<p><a href="https://snap-ci.com/">Snap</a> is a CI server and build pipeline tool for

both integrating and deploying code.</p>

</li>

</ul>

<h2>Continuous integration resources</h2>

<ul>

<li>

<p><a href="http://martinfowler.com/articles/continuousIntegration.html">What is continuous integration?</a>

is a classic detailed article by Martin Fowler on the concepts behind CI

and how to implement it.</p>

</li>

<li>

<p><a href="http://www.airpair.com/continuous-deployment/posts/continuous-deployment-for-practical-people">Continuous Deployment For Practical People</a>

is not specific to Python but a great read on what it entails.</p>

</li>

<li>

<p><a href="http://bitcubby.com/continuous-integration-delivery-illustrated/">Continuous Integration & Delivery - Illustrated</a>

uses well done drawings to show how continuous integration and delivery

works for testing and managing data.</p>

</li>

<li>

<p><a href="http://www.rackspace.com/blog/diving-into-continuous-integration-as-a-newbie/">Diving into continuous integration as a newbie</a>

is a retrospective on learning CI from a Rackspace intern on how she learned

the subject.</p>

</li>

<li>

<p><a href="http://stackshare.io/continuous-integration">StackShare's Continuous Integration tag</a>

lists a slew of hosted CI services roughly ranked by user upvotes.</p>

</li>

</ul>

<h3>What do you want to add to your application next?</h3>

How do I log events that happen in my app while it is running?

</p>

</div>

</a>

What should I do to secure my web application?

</p>

</div>

How do I integrate external APIs into my application?

</p>

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<div class="panel-heading"><h3 class="panel-head">Continuous Integration</h3></div>

<a href="/">Full Stack Python</a> is an open book that explains

each Python web application stack layer and provides the

best web resources for those topics.

<hr/>

There's a work-in-progress

<a href="/full-stack-python-map.pdf">subjects map (.pdf)</a>

that visually lays out each chapter in addition to the table of

contents found below.

<hr/>

Need more detailed tutorials and walkthroughs than what is

presented here?

<a href="/email.html">Sign up for an email alert when that content is created.</a>

<hr/>

<a href="http://twitter.com/mattmakai">Matt Makai</a> built

this site with assistance from community pull requests. On GitHub

you can <a href="https://github.com/makaimc">follow Matt</a>

to see the daily changes.

</div>

<h3 class="panel-head">Table of Contents</h3>

</div>

<a href="/introduction.html" class="list-group-item smaller-item ">Introduction</a>

<a href="/web-frameworks.html" class="list-group-item smaller-item ">Web Frameworks</a>

<a href="/django.html" class="list-group-item smaller-item ">Django</a>

<a href="/flask.html" class="list-group-item smaller-item ">Flask</a>

<a href="/bottle.html" class="list-group-item smaller-item ">Bottle</a>

<a href="/morepath.html" class="list-group-item smaller-item ">Morepath</a>

<a href="/other-web-frameworks.html" class="list-group-item smaller-item ">Other Web Frameworks</a>

<a href="/deployment.html" class="list-group-item smaller-item ">Deployment</a>

<a href="/servers.html" class="list-group-item smaller-item ">Servers</a>

<a href="/platform-as-a-service.html" class="list-group-item smaller-item ">Platform-as-a-service</a>

<a href="/operating-systems.html" class="list-group-item smaller-item ">Operating Systems</a>

<a href="/web-servers.html" class="list-group-item smaller-item ">Web Servers</a>

<a href="/wsgi-servers.html" class="list-group-item smaller-item ">WSGI Servers</a>

<a href="/source-control.html" class="list-group-item smaller-item ">Source Control</a>

<a href="/application-dependencies.html" class="list-group-item smaller-item ">Application Dependencies</a>

<a href="/databases.html" class="list-group-item smaller-item ">Databases</a>

<a href="/no-sql-datastore.html" class="list-group-item smaller-item ">NoSQL Data Stores</a>

<a href="/web-design.html" class="list-group-item smaller-item ">Web Design</a>

<a href="/cascading-style-sheets.html" class="list-group-item smaller-item ">Cascading Style Sheets</a>

<a href="/javascript.html" class="list-group-item smaller-item ">JavaScript</a>

<a href="/continuous-integration.html" class="list-group-item smaller-item active">Continuous Integration</a>

<a href="/code-metrics.html" class="list-group-item smaller-item ">Code Metrics</a>

<a href="/configuration-management.html" class="list-group-item smaller-item ">Configuration Management</a>

<a href="/static-content.html" class="list-group-item smaller-item ">Static Content</a>

<a href="/caching.html" class="list-group-item smaller-item ">Caching</a>

<a href="/task-queues.html" class="list-group-item smaller-item ">Task Queues</a>

<a href="/application-programming-interfaces.html" class="list-group-item smaller-item ">Application Programming Interfaces</a>

<a href="/api-integration.html" class="list-group-item smaller-item ">API Integration</a>

<a href="/api-creation.html" class="list-group-item smaller-item ">API Creation</a>

<a href="/logging.html" class="list-group-item smaller-item ">Logging</a>

<a href="/monitoring.html" class="list-group-item smaller-item ">Monitoring</a>

<a href="/web-analytics.html" class="list-group-item smaller-item ">Web Analytics</a>

<a href="/web-application-security.html" class="list-group-item smaller-item ">Web Application Security</a>

<a href="/best-python-resources.html" class="list-group-item smaller-item ">Best Python Resources</a>

<a href="/development-environments.html" class="list-group-item smaller-item ">Development Environments</a>

<a href="/about-author.html" class="list-group-item smaller-item ">About the Author</a>

<a href="/change-log.html" class="list-group-item smaller-item ">Change Log</a>

<a href="/future-directions.html" class="list-group-item smaller-item ">Future Directions</a>

<a href="/what-full-stack-means.html" class="list-group-item smaller-item ">What "Full Stack" Means</a>

<a href="/websockets.html" class="list-group-item smaller-item ">WebSockets</a>

</div>

</div></div>

<hr/>

<a href="http://www.mattmakai.com/" class="underline">Matt Makai</a>

2014

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