Creating APIs with the WSO2 Platform
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The document discusses creating APIs with the WSO2 platform. It describes the API facade pattern and how WSO2 ESB, Application Server, Data Services Server, and Business Process Server can be used to implement different layers of an API. The WSO2 products provide mediation capabilities and allow exposing existing services and data sources as APIs.
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Creating APIs with the WSO2 Platform
- 1. Crea&ng APIs with the WSO2 Pla6orm Sagara Gunathunga Senior Technical Lead WSO2
- 2. API Sources – h;p://ismart-‐ledtv.blogspot.com/2013/06/Toshiba-‐42L6200U-‐42-‐Inch-‐1080p-‐120Hz-‐3DP-‐LED-‐TV-‐Smart-‐TV.html h;p://www.huffingtonpost.com/hillel-‐fuld/
- 3. Contract & ImplementaUon Sources -‐ h;p://www.fujifilmholdings.com/en/sustainability/acUvityreport/csr/fpd/index.html,
- 4. Contract & ImplementaUon Sources -‐ h;p://www.fujifilmholdings.com/en/sustainability/acUvityreport/csr/fpd/index.html, API Contract API ImplementaUon
- 5. Façade Pa;ern Provide a unified interface to a set of interfaces in a subsystem. Facade defines a higher-‐level interface that makes the subsystem easier to use
- 6. API Façade pa;ern Facade MediaUon Backend Services
- 7. API Façade AuthenUcaUon • Basic Auth • OAuth • SAML • NTLM • Social login AuthorizaUon • OAuth Scope • XACML SLA • Thro;ling • Scaling • Billing AnalyUc • RealUme events • Business Intelligence • Reports Management • Publishing • SubscripUon management • Token management Discovery • Search • DocumentaUon • Swagger • Samples • Forum
- 8. MediaUon QoS • Basic Auth, OAuth • WS-‐Security • WS-‐RM • Store and Forward Connectors • SalesForce • Gdoc, Gmail • Twi;er • …………. Tasks • Inbuilt • Custom TransformaUons • XSLT • XQuery • Smokes • XPath Content Switching • SOAP 1.1/1.2 • JSON • XML • Text • CVS Transport switching • HTTP/S • JMS • AMQP • MQTT • SMTP
- 9. MediaUon • It is possible to combine façade and mediaUon layers into a single layer to reduce latency and maintenance overhead but generally it is recommended to keep these two layers separately • When WSO2 Business Process Server used in mediaUon layer it actually perform “Service OrchestraUon” • If the backend service is API-‐friendly then it is possible to omit this layer so that API façade directly call backend services but this is depends on business level requirements as well
- 10. API Façade pa;ern & WSO2 plajorm Facade MediaUon Backend service
- 11. WSO2 ESB • High performance ESB based on Apache Synapse • Provides message and service mediaUon • Facilitate to expose exisUng legacy system as APIs • API implementaUons can be • A REST API • A Proxy Service
- 12. API creaUon with WSO2 ESB API MediaUon Backend service Backend service API API Proxy API SOAP XML TEXT CVS Binary FIX SAP EJB VFS Pass-‐through JMS AMQP MQTT API Gateway MediaUon
- 13. WSO2 ApplicaUon Server • Lightweight applicaUon server based on Apache Tomcat • API implementaUons can be • JAX-‐RS service • JAX-‐WS Service • Jaggery REST service • Axis2 REST or SOAP service • Can be also used to host back end service. • Binary services based on Protocol Buffer
- 14. API creaUon with WSO2 AS API Services on AS API API API Gateway JAX-‐RS JAX-‐WS Jaggery Axis2 Pass-‐through
- 15. API creaUon with WSO2 AS API MediaUon service on AS API API Proxy API API Gateway MediaUon JAX-‐WS Axis2 Binary Binary (TCP) HTTP/JMS HTTP/S HTTP/S
- 16. WSO2 Data Services Server • Encapsulate data access logic and expose as standard services – RESTfull data services – SOAP 1.1/1.2 based services • Support for service management & QoS features – Security , Transactions Throttling, Caching ,Data Federation • In-built data sources and ability to create your own – RDBMS – MySQL, Oracle, DB2, MS-SQLServer, Postgresql – NoSQL - Cassandra, MongoDb – Google spread sheet, Excel , CSV
- 17. API creaUon with WSO2 DSS API Data Services API API API Gateway REST SOAP Pass-‐through
- 18. WSO2 Business Process Server • Expose business process wri;en in BPEL as services and execute them • Based on Apache ODE engine • Support for WS-‐BPEL 2.0, BPEL4WS 1.1 , BPMN • Full persistent support for long-‐running processes
- 19. API creaUon with WSO2 BPS API OrchestraUon Backend service Backend service API Business Process API Gateway OrchestraUon Service
- 20. WSO2 Business Rule Server • Business rules are exposed as services • Default rules engine is Drools but possible to plug-‐in any engine supported for JSR-‐94 • Basic rule support also available in WSO2 ESB as a mediator
- 21. API creaUon with WSO2 BRS API Rule Services API API API Gateway REST SOAP Pass-‐through
- 22. API Everywhere The idea is to embed API Gateway capabiliUes into carbon based products to provide API management capabiliUes without another network hop. • For small deployments API Store , API Publisher and Key Manger can also embedded into same carbon instance • Reduce latency • Reduce cost for small or medium scale deployments • Not a replacement for distributed API-‐Manager deployments.
- 23. API Everywhere -‐AS
- 24. API Everywhere -‐AS
- 25. Thank You