apidays LIVE Australia - Definition-Driven API Development: Streamlining your API Development with OAS by Martin McDonagh
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apidays LIVE Australia - Building Business Ecosystems Definition-Driven API Development: Streamlining your API Development with OAS Martin McDonagh, Lead Solutions Architect at SmartBear
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apidays LIVE Australia - Definition-Driven API Development: Streamlining your API Development with OAS by Martin McDonagh
- 1. 1 Definition Driven API Development Streamlining your API Development with OAS Martin McDonagh Lead Solutions Architect – APAC @ SmartBear
- 3. 3 API First Approach Client A Client B Client C API API API Mock Mock Mock Implementation Implementation Implementation Frontend Developers Backend Developers The API First approach involves having your APIs as the first and primary element of your product and service strategy, Database
- 4. 4 Definition Driven API development advocates for designing the API’s contract first before any other lifecycle operation The Definition Driven Answer Drives Implementation Maintenance Consumption
- 5. 5 • A definition is a framework for describing APIs • Machine and human readable • Language agnostic A Common Vocabulary The Open API Specification (OAS) is the world’s standard for defining RESTful APIs
- 6. 6 Reduced interdependencies, allow teams to work at their own pace Fast development and delivery Easier expansion to different interfaces, clients and views Developer friendly services to build ecosystems and platforms Advantages of Definition Driven Development Faster Development New Revenue Channels and Growth
- 7. 7 OAS opens a world of possibilities Mocking Design Clients Deployment/Runtime Documentation Virtualization Testing Implementation Prototyping Object reuse, Callbacks etc. Generated client libraries Security, Usage policies, Monitoring, Caching, etc. Developer portals, code samples, User guides, etc. Functional/Runtime simulations Functional, Security, Load, etc. Generated server code/artifacts
- 8. 8 Definitions Touch Every Phase of the Lifecycle Design Document Virtualize Code Test
- 9. 9 Documentation from Definition Auto generation from contract Hosted anywhere Fully interactive
- 11. 11 Virtualization accurately mimics/simulates behaviour of components that are unavailable or difficult to access during software development and beyond. Examples of components that can be virtualized: Service Virtualization Devices Databases API Network
- 12. 12 Virtualization from the Definition Virtualization • Developers • Testers • Other Stakeholders Consumer Development
- 13. 13 OAS and Code Generation
- 14. 14 The OAS definition allows you to generate server stubs and client SDKs directly from the definition Code-Generation from the Definition Developer Consumer Codegeneration SDK
- 16. 16 Testing from the Definition The OAS definition allows you to generate test cases directly from the contract Tester TestAPI Testing tool Refactored Refactored Test cases
- 17. 17 • OpenAPI Specification is machine and human readable • OAS allows for parallel development • OAS can be driven across the full API Lifecycle • Virtualization allows to build an advanced mock from the OAS definition that is dynamic • It is also possible to build a test in minutes directly from the OAS definition using Open Source or Professional API testing tools Summary
- 18. Proprietary & Confidential 1818 Thank You martin.mcdonagh@smartbear.com
Hinweis der Redaktion
- OpenAPI Specification (formerly Swagger Specification) is an API description format for REST APIs.
- An API-first approach means that for any given development project, your APIs are treated as “first-class citizens.” That everything about a project revolves around the idea that the end product will be consumed by mobile devices, and that APIs will be consumed by client applications. An API-first approach involves developing APIs that are consistent and reusable, which can be accomplished by using an API description language to establish a contract for how the API is supposed to behave. The API design that is stubbed out can be used by front-end and backend devs APIs functionality can be stubbed out. Minimizing dependencies between backend and front end devs API backend stubbed out
- Putting yourself in the end-consumers shoes Design the api interface first Remove dependencies Implementation logic Create a great consumer experience
- Common framework of thinking Technical writers, developers, Architects Reduces issues with inefficiencies and teams Keeps everything in sync Source of truth – integrate with workflows and tools - Jenkins/GitHub etc for workflow
- Starting from the API design Fits in well with mocking Expand to front clients Faster = reduced interdependencies between teams Clients = not constrained by architecture with design first Put yourself in the consumers shoes and build a great experience for building ecosystems
- Mocking = Prototyping Design = Object resuse/callbacks Clients = Generated client libraries Deplyment/Runtime = Security/Usage Policies/Monitoring Docuentation = Dev Portal/User Guides Virtualization = Functional simulations Testing = functional, security, load Implementation = Generated code
- Machine readable Tooling ecosystem Swagger UI etc .
- Early feedback and speed Google Maps / Rate limits Load Testing against virtual service Mimic the behavior of google maps Hand off to front end developers
- - Clone and create advanced scenarios - Shared to consumers internally and externally - Beta feedback? - Advance development processes Sandbox Advantages: Reduces dependency between teams (front end/backend) Enables parallel development Faster prototyping (startup)
- Advantages of code gen: No wasting time of boiler plate code Faster prototyping Out of the box SDK generation for easy consumption Developer focuses on business logic Generate SDKs for a better consumer experience
- Advantages of testing from the definition: Reduce time to market by generating quick tests Easily tie back to development process and refactor changes (minimize confusion) Mitigate risk (Testing before production)