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Tooling Best Practices for Integration Experts

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Best practices that save time and effort for integration developers while working on their integration developments using WSO2 Enterprise Integrator.

Watch the webinar on-demand here: https://wso2.com/library/webinars/2019/07/tooling-best-practices-for-integration-experts/

Publié dans : Technologie
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Tooling Best Practices for Integration Experts

  1. 1. Tooling Best Practices for Integration Experts Heshitha Hettihewa & Prabushi Samarakoon WSO2 Integration Team
  2. 2. Agenda • How to develop an integration scenario following best practices • Supported project & artifact types and their usages • Naming conventions • Useful shortcuts • Native logging practices • Message transformation conventions • IDE Concepts
  3. 3. Developer Scenario • A developer needs to implement a ‘User Registration’ System • He wants to test the configurations in his QA environment before deploying them in the production environment • Some of the configurations in these two environments can differ due to their infrastructure
  4. 4. User Registration Process Register an user request Send an email Process registration Registration status response Registration success response Registration processing backend system Store registration details in database
  5. 5. Let’s Develop
  6. 6. Next slides will be presented along with the video
  7. 7. Project Types • Maven Multi Module Project • ESB Solution Project • Composite Application Project • Registry Resources Project • Connector Exporter Project • Data Service Project • Data Source Project • BPEL Project • Human Task Project • BPMN Project • Mediator Project
  8. 8. Artifact Types • Proxy Service • REST API • Sequence • Endpoint • Inbound Endpoint • Message Processor • Message Store • Scheduled Task • Template • Local Entry • Data Service
  9. 9. ENTERPRISE INTEGRATOR Naming Conventions Type Format Sample Folders <Project><FolderName> Folder structure for registry resources; <Project>/<ResourceType>/<subResourceType> StudentInformationSystemLibraries StudentInformationSystem/wsdl StudentInformationSystem/xsd StudentInformationSystem/schema/validate StudentInformationSystem/schema/wsdl Project Name <ProjectName> StudentInformationSystem Source Files <ProjectName>_<FileName>_<Type>.<Extension> Student_Student_Sequence.xml, Stocks_StockQuote_FileInbound.xml Sub Modules <Project><ModuleName> StudentInformationSystemDataService
  10. 10. ENTERPRISE INTEGRATOR Useful Shortcuts Function Linux / Windows Mac Copy Ctrl + c Command + c Paste Ctrl + v Command + v Cut Ctrl + x Command + x Save Ctrl + s Command + s Add block comment Ctrl + Shift + / Command + / Remove block comment Ctrl + Shift + Command + Remove line Ctrl + d Command + d Un select Ctrl + click esc Search in workspace Ctrl + Shift + r Command + Shift + r Zoom in design view Ctrl + + Control + +
  11. 11. Log mediator • Use in the message flow as checkpoints • Not recommended to use in a production setup (Except in Fault sequences) • Important to use within the fault flow to isolate the issue • Inbuilt properties can be used to retrieve the error details – ERROR_MESSAGE – ERROR_CODE – ERROR_DETAIL – ERROR_EXCEPTION
  12. 12. ENTERPRISE INTEGRATOR Message Transformation Conventions Mediator Use Cases Payload Factory Message format is fixed and there are less number of external inputs ForEach Original message has repetitive elements that should be processed (use together with the Payload Factory mediator) Enrich Add/remove part of the/whole message XSLT Transformation logic is complex and performance critical Data Mapper Change the structure of data in a message or convert and transform one data format to another Smooks Large file transformations
  13. 13. ForEach mediator • Loops over the sub-messages and merges them back to the same parent element of the message • Does not allow using Call, Send and Callout mediators in the sequence (Use an Iterate mediator instead) • Does not split the message flow, unlike Iterate mediator • Guarantees to execute in the same thread until all iterations are complete
  14. 14. Clone mediator • Clones a message into several identical messages • Use a Call mediator in the target sequence to bring the responses back into the In-Sequence • Similar to Iterate mediator, but it splits the message into different parts
  15. 15. ENTERPRISE INTEGRATOR Send | Call | Callout mediator Mediator Use Cases Send ● Sends a message, and the response comes to the OutSequence (or to the specified receiving sequence) ● Uses non blocking transport Call ● Sends a message, and the mediation flow will continue with the next mediator after the send operation is done ● Recommended for service chaining scenarios ● Uses non blocking transport Callout ● Behaviour is similar to Call mediator ● Uses blocking transport ● Performance is not good as Call or Send mediator because of the blocking nature
  16. 16. IDE Concepts - Perspectives • Used to customize the IDE experience • Consisted of view positionings, toolbar customizations etc. which will be helpful when developing artifacts • Effective use of the perspectives is very useful for development • Several perspectives are used in Integration Studio; – WSO2 ESB Graphical – WSO2 Welcome – WSO2 Data Mapper Graphical – WSO2 Registry – Debug – BPEL – Activiti
  17. 17. IDE Concepts - Views • Views are the different window segments that IDE consists of • Basically any sub window apart from the editors are known as a view in Integration Studio • Several views are used in Integration Studio; – Project Explorer – Console – Properties – Outline – Template Guide – Realtime Datamapper Preview – Palette – WSO2 Registry Browser – Wire Log View
  18. 18. Connectors • Use secure vault to secure user credentials • To seamlessly refresh tokens, use a registry location that is visible to all esb cluster members • Use $ctx instead of the get-property() function to improve performance
  19. 19. Database mediators • Use DB Report/ DB Lookup to process simple queries (Select, Insert) • Use Data Services with complex scenarios such as retrieving multiple rows, nested queries, etc.
  20. 20. Class | Custom mediator • Should be used when the intended functionality cannot be achieved using inbuilt mediators • Consider the performance impact and possible memory leaks • Follow Java naming conventions and best practices
  21. 21. THANK YOU wso2.com