Python reliable delivery
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The document discusses how Python is used at Braintree for reliable delivery of cross-platform developer products. It describes using Python with Appium for mobile app testing, Behave for behavior driven testing, Elasticsearch for storage and visualization of test results, and Kibana for data visualization. Jenkins is used for continuous integration to run automated tests on a regular cadence. The approach allows for fast iteration and contribution from developers with different backgrounds.
![Create Elasticsearch Mapping
es.indices.put_mapping(doc_type='behave',
body=mappingJson, index=['reliability'])](https://image.slidesharecdn.com/pythonreliabledelivery-151125024700-lva1-app6892/85/Python-reliable-delivery-23-320.jpg)
Python reliable delivery
- 1. Python for reliable delivery of cross- platform developer products @avidas
- 2. Speaker Ananya (Avi) Das Engineer at Braintree, a PayPal company Developer experience, SDKs and platform infrastructure Austin, Texas
- 3. Introduction Cross platform: One use case can involve multiple devices, mobile/client-side web/server side Does it work? Where are the pain points? Health of APIs and SDKs Live, Sandbox and Stage environments
- 4. Overview Build a minimum viable testing pipeline
- 5. Product One Touch reduces friction in payments by preserving identity across apps or sites Fewer Screens, better conversion
- 8. Client Side
- 9. Server Side
- 11. requirements.txt mobile/web automation enable product/marketing to write tests describing expected behavior communicate current health of the platform via dashboards/charts
- 12. Architecture
- 13. Start PHP Became obvious that PHP was not general purpose enough for our requirements Switch to Python and have worked very well for us
- 14. Automation Appium for iOS/Android automation Follows the WebDriver API similar to Selenium Can automate mobile native, mobile web and mobile hybrid apps
- 15. Code Example http://bit.ly/1Hls0Hg Check out v0.1.0 tag of repo Tests an iOS app (needs Xcode) Needs Appium running (needs Node.js)
- 17. Behavior Driven Testing Behave, a Python BDD framework Terminology: Features, Scenarios and Steps, context Custom formatters for output
- 19. Code Example Describe the previous Appium use case as a behave test Check out v0.2.0 tag
- 20. Storage and Visualization ElasticSearch and Kibana JSON over HTTP interface Index, Mapping type
- 21. Install ElasticSearch (OSX) brew install elasticsearch && brew info elasticsearch launchctl load ~/Library/LaunchAgents/homebrew.mxcl.elasticsearch.p list
- 23. Create Elasticsearch Mapping es.indices.put_mapping(doc_type='behave', body=mappingJson, index=['reliability'])
- 26. Code Example Getting the behavior driven test data into ElasticSearch and display on Kibana Check out v0.3.0 tag
- 27. Kibana Open source data visualization platform Wide variety of graphs and charts out of the box Benefits from ElasticSearch’s extensive search and analytics abilities Negatives: Sacrifices some configurability in the latest major 4.0 e.g. Modifying labels/colors is not possible yet
- 28. Install Kibana brew install kibana && brew info kibana launchctl load ~/Library/LaunchAgents/homebrew.mxcl.kibana.plist
- 31. Continuous Integration(CI) Jenkins gets latest copy of the code and runs the end to end test cases Admin interface for configuring to run jobs at set cadence and monitor run history
- 32. Takeaways Python’s ease of learning ensured team members adept in other technologies/platforms could contribute Appium is a Node app, ElasticSearch written in Java, Behave in Python, Kibana in Node. All have officially supported Python bindings. Get to production fast and iterate
- 33. Future work Improve alerting e.g. send meaningful alerts via email/Slack Release components to Open source community Expand usage to other products
- 34. Contributors Jason Ziaja (@jziaja) Jay Patel (@jaypatel512) Juwon Lee (@juwlee) Matt Jacunski (@mattjacunski) Avi Das (@avidas)
- 35. Thank you! https://www.braintreepayments.com/features/one-touch www.braintreepayments.com Avi Das (@avidas) Questions?
Editor's Notes
- #3: First time speaking at a conference At various points switch between browser, live coding, and slides. Please shout out if fonts are too low.
- #5: Use Python to automate iOS app via Appium Use Behave, a Python BDD framework, as a way to describe tests for better communication Storage of test data via ElasticSearch Visualization of results on Kibana Pycon is really great because there are people working in all these different fields, finance, healthcare, climate. My goal with this talk is that some of you may learn something useful in this talk that you can then go back and use in your work or hobby project
- #6: We are well known for serving a broad set of use cases across payments industry The whole product depends on a multitude of distributed teams working on individual components Your customers will log in just once per device and then instantly complete purchases across other apps or sites. They’ll see fewer screens, which could mean better conversion for you.
- #7: In this Video, an user chooses to pay with PayPal in a merchant application, at which point it switches to browser, where user grants consent and it comes right back to the app. If you are selling on mobile, this is huge since there is no entering credentials, typing in credit card numbers. Less friction, more sales
- #8: These are just some of our awesome partners who using this in production
- #9: How does this work
- #12: So let’s look at our requirements
- #14: This is not a gripe on the language, but just the ecosystem is focused most on web pages than anything else Might be good language
- #15: Who here have used Appium? The context under which you test will inform you of the specific choice of testing methodology and test tools to choose. The more options you are aware of, the better your context specific choice is going to be.
- #16: OSX only
- #18: Allows us to communicate the tests across product, management, business stakeholders `context` used to pass state across steps
- #19: ----- Meeting Notes (11/8/15 12:47) ----- Feature is
- #21: By default, Behave reports result as print out but we needed json formatting as it is a better cross platform data format. Extended Behave PrettyJSONFormatter Based on the Lucene Search Index This is not the most common use for ElasticSearch, most common use case is full-text search Not just for full-text search Supports authentication via add-ons such as Shield Extensive documentation and support E.g. A blogging platform may store data in a single index and within it different mappings for user, blog, comments
- #33: PRs from people who do not write Python on day to day basis. Biggest win developers with core competencies in languages such as php, .net, java could get productive fast. Optimize for developer happiness. Productivity, beauty and brevity. Use plain language PHP or Java
- #34: we are discovering problems faster, and seeing where existing test framw integrate with good alerting Such as Pay With Venmo Test different versions of sdks, different versions of APIs
- #36: The tools used here worked well in conjunction with the use cases we have Doesn’t mean there aren’t better ways to do it Open to feedback and improving the pipeline