NDC Oslo 2014: The integrations we fear and how we can manage them
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Slides from NDC Oslo 2014: http://ndcoslo.com/ View a video of the presentation here: http://vimeo.com/97349265 Have you ever received an API or a set of webservices that just weren't good enough? This happens more often than we'd like, and when it happens it's important to know what you can do to make sure your project isn't infected with the lack of quality from third party vendors. I'll talk you through the different stages in your project, highlighting the steps you can take to minimize the risks of integrating your system with another, while making sure it will be maintainable in the future.
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NDC Oslo 2014: The integrations we fear and how we can manage them
- 1. The integrations we fear and how we can manage them Karoline Klever @karolikl
- 2. I fear badly written APIs
- 4. I fear heavy payloads
- 6. I fear uneccessary complexity
- 7. I fear third party vendors who are unwilling to cooperate
- 8. «We’d rather you didn’t use our APIs as they require about 200 hours of training» Quote - Head of Account and Sales
- 9. The phases of integration projects Setup Implementation
- 10. The Setup phase Find out who to talk to
- 11. Communicating the hard way You Project Manager Account Manager Tech guy Project Manager
- 12. Reducing the complexity of communication You Tech guy
- 13. The Setup phase Find out who to talk to Ask for documentation
- 14. The Setup phase Find out who to talk to Ask for documentation Agree on jurisdiction and specification
- 15. The Setup phase Find out who to talk to Ask for documentation Agree on jurisdiction and specification Get access to everything you need
- 16. The Setup phase Find out who to talk to Ask for documentation Agree on jurisdiction and specification Get access to everything you need Demand a test environment
- 17. Start setting up as soon as possible Current task Integration Something else Deadline
- 18. Start setting up as soon as possible Current task Integration Something else Setup Implementation Something else Deadline Current task
- 19. Start setting up as soon as possible Current task Integration Something else Setup Implementation Something else Deadline Setup Implementation Something else Current task Current task
- 21. Time consuming communication 22 emails 15 days
- 22. The phases of integration projects Setup Implementation
- 23. The Implementation phase Badly written APIs Heavy payloads Uneccessary complexity Third-party vendors unwilling to cooperate Hard to maintain
- 24. The Implementation phase Facade pattern Integration tests Logging
- 25. One facade, one API ProductFacade.cs Product API
- 26. One facade, several APIs ProductInventoryFacade.cs Product API Inventory API
- 27. Helper facades InventoryFacade.cs Product API ProductFacade.cs
- 30. How does the facade look?
- 31. The Implementation phase Facade pattern Integration tests Logging
- 32. What do I test? Internal classes/subsystems External components Application Service Layer
- 33. Example: System under test
- 35. The Implementation phase Facade pattern Integration tests Logging
- 36. Minimal logging
- 37. Lots of logging
- 40. Injecting code
- 41. Decompiled