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Design-First API Development Using Swagger & Node
Scott Ganyo, Apigee Prabhat Jha, Apigee
@theganyo @prabhatjha

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Agenda
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1. APIs - What and Why
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What is Design-First API
development?
3. Some Apigee internal use cases
4. Customer Reference
5. Tools & demo
6. Q&A
©2015 Apigee. All Rights Reserved.

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APIS
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An API…
Defines an HTTP service
Serves its client apps
Drives service adoption
APIs
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APIs are for…
Developers
Apps :
• External
• Internal
Microservices
Devices
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What APIs are not ?
SOA++
ESB
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Design-First API
Development
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The Zen of API Development
The code defines the API
The API generates the code
The code is the API
API-driven code
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The code defines the API
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Annotation-driven
Maintained in code
API is generated

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The API generates the code
Interface Definition Language (IDL) defines the API
Client and serverside code stubs are generated
Examples: SOAP, CORBA, and similar RPC systems
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The code is the API
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Interpreted
No formal specification

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API-driven philosophy
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The API must be designed first.

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API-driven philosophy
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API design, documentation, and code must remain in sync.

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API-driven philosophy
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The system must adhere to the "DRY Principle."

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API-driven philosophy
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The API must directly drive runtime and documentation.

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Swagger-Node
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Swagger-Node: Flow Diagram
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Swagger-Node
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The API is written in Swagger, optionally using API Studio (apistudio.io)
The Swagger API document is parsed when server starts
Incoming calls are classified, validated, and routed in real time
Integrates with Connect, Express, Hapi, Restify, Sails...
Incorporates a plugin model for Swagger (or non-Swagger) extensions

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Apigee Use Cases
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Use case: Recommendation API (Apigee Insights)
• To personalize an app experience, developers need to quickly create
APIs that mashup results from big fata machine learning and real-time
events. Swagger-node enables quick creation of those APIs via
Swagger, and create the business-logic necessary in node.js.
20©2015 Apigee. All Rights Reserved.

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Use case: API Studio
• Authoring
• Collaboration
• Response simulation
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Use case: Test Coverage
• Historical test coverage analysis
• APIs for CI to update
• UI for test teams
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Customer Reference
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Burberry
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Tools & Demo
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API Lifecycle management tools
• Write & Collaborate:
– API Studio (http://apistudio.io)
• Develop :
– Swagger-Node (npm install -g swagger)
• Deploy
• Apigee Edge
• Your PaaS
• Publish
• Apigee Dev Portal
• API Studio
26©2015 Apigee. All Rights Reserved.

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Demo
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Where to get help?
https://community.apigee.com
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Q&A
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Thank You
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