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API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
API Facade Pattern with Apache Synapse
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API Facade Pattern with Apache Synapse

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How to expose a SOAP service through a a REST API using the Synapse ESB as a gateway.

How to expose a SOAP service through a a REST API using the Synapse ESB as a gateway.

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  • 1. API Façade Pattern withApache SynapseHiranya Jayathilakahiranya@apache.org
  • 2. Apache Synapse A lightweight, open source Enterprise Service Bus (ESB) Visit http://synapse.apache.org Connect and integrate heterogeneous systems
  • 3. What is an ESB?
  • 4. Key Features of Synapse Message routing Message filtering Message transformation Message enrichment Protocol switching Load balancing Fail-over routing QoS enforcement Service virtualization Traffic throttling Task scheduling
  • 5. Supported Protocol/Standards Communication protocols (Transports) HTTP/S, E-Mail (POP/IMAP), JMS,AMQP, FIX, FTP and other filetransfer protocols, RawTCP and UDP and more… Message formats (Content exchange formats) XML, SOAP, JSON, HTML, Plain text, Hessian, HL7,Variousbinary formats and more… Other JDBC/SQL,WSDL and otherWS-* standards, REST, SNMP, JMX
  • 6. Synapse Messaging Model Several types of configurable and composable constructs Mediators Sequences Proxy Services APIs Endpoints Templates Message stores and processors
  • 7. Mediators Smallest configurable message processing unit in Synapse Synapse ships with a wide range of built-in mediatorsMediatorInputMessageOutputMessageConfig
  • 8. Sequences An ordered list of mediators Provides the “message flow” abstractionLogMediatorHeaderMediatorSendMediator
  • 9. APIs/Proxy Services Connects a client application to a backend service Comprised of several sequences In sequence – Processes requests from client Out sequence – Processes responses from the service Fault sequence – Handles errorsClientApplicationBackendServiceAPI/Proxy ServiceIn SequenceOut Sequence
  • 10. Synapse Configuration XML-based metalanguage Simple and intuitive – Protocol and message format agnosticprogramming model Supports the familiar constructs of a programming language If-Then, Switch-Case,Try-Catch Reusable function-like constructs Hot deploy and hot update
  • 11. API Façade Pattern Expose a non-RESTful application through a REST API Example use cases Expose a SOAP service as a RESTful service Expose a database as a service Expose a legacy system as a service
  • 12. DemoRESTClientSOAPServiceSynapse/ESB
  • 13. Questions?
  • 14. References Apache Synapse – http://synapse.apache.org WSO2 ESB - http://wso2.com/products/enterprise-service-bus/ Demo artifacts - https://github.com/hiranya911/rest-gateway-demo Demo documentation - https://rest-gateway-demo.readthedocs.org/en/latest/ API façade pattern -http://asanka.abeysinghe.org/2013/04/pragmatic-approach-to-api-facade-pattern.html

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