Logic Apps Exception Management - Azure Lunchtime
- 1. Exception management patterns in Logic Apps
- 2. Who am I? Wagner Silveira Principal Integration Architect Microsoft MVP - Azure MCSA – Cloud Platform
- 3. Agenda •What is Logic Apps •Exception management components •Some patterns •Lessons learned
- 5. Logic Apps • Microsoft Integration Platform as a Service (IPaaS) offering • Business Processes Orchestration in the Cloud • Azure factor (pay as you go, pay per usage, scale on demand) • Cloud and Hybrid Integration • Multiple Trigger Patterns • Manual Invocation • Event Based • Scheduled • Extensible
- 6. Concepts • Workflows • Triggers • Actions • Connectors • Flow structures
- 7. Planning for the unexpected • Try again • Plot alternative paths • Divide and conquer • Finish execution
- 8. Exception management components • Retry policies • Run after • Scopes • Terminate
- 9. Retry policies • Retry execution based on status code ‐ 429 | 5xx • Two modes ‐ Fixed based on interval and count ‐ None • Out of the box 20s x 4 • Can be configured from designer
- 10. Run after • Define execution order • Based on name and status • Define success and failure flows • Can be configured from designer • Multiple predecessors possible (from code)
- 11. Scopes • Group a series of workflow elements • Can host any action or flow control • Simplify exception management
- 12. Terminate • Force workflow termination • Define final workflow status ‐ Succeeded ‐ Cancelled ‐ Failed Error Code Error Message
- 13. Hands on time Exploring the tools
- 14. Patterns • Controlling the flow • Collating error information • Group logical blocks by scope
- 15. Controlling the Flow • Similar to try/catch • Use scope for try • Use run after for catch • Use terminate to control the result
- 16. Collating error information • Filter scope results for errors • Use information ‐ Propagate error ‐ Notify ‐ Log
- 17. Group logical blocks by scope • Identify logical blocks • Wrap them around scopes • Allow ‐ Compensation policies ‐ More granularity
- 18. Hands on time Collating information
- 19. Lessons learned • Use scope from start • Use multiple scopes for more control • Have the right retry policy • Do Until can replicate retry
- 20. Takeaways • Logic Apps have good tools for exception management • Latest changes in UI makes it simpler • Scopes can help you control the flow • Think about the right retry policies • Plan it from start
- 21. Thank you! @wsilveiranz | wagner.Silveira@theta.co.nz