Exploring Mobile Observability with OpenTelemetry

An exploration of using Opentelemetry APIs and android agent to build a better observability system for Android apps.

Transcript

1. Blrdroid Meetup, Nov 2024 Mobile Observability with OpenTelemetry Jitin Sharma, Groww
2. Observability
3. System Inputs Outputs
4. Sum Machine 2,2 4
5. Sum Machine 2,2 4 4,4 8
6. Sum Machine 2,2 4 4,4 6,4 8 -1
7. Sum Machine 2,2 4 4,4 6,4 8 -1
8. Mobile Apps
10. Mobile App User Action UI
11. Mobile App Backend
12. Mobile App Cell Tower CDN/ Gateway Backend
13. Mobile App Cell Tower CDN/ Gateway Backend • OEM • Performance • OS Versions • Network state • User lifecycle
14. Mobile App Cell Tower CDN/ Gateway Backend • OEM • Performance • OS Versions • Network state • User lifecycle Background Jobs Noti fi cations
15. Mobile App Cell Tower CDN/ Gateway Backend • OEM • Performance • OS Versions • Network state • User lifecycle Background Jobs Noti fi cations Backend Code
16. What could go wrong
17. Issue due to wrong code
18. Issue due to wrong code Network fl uctuations
19. Issue due to wrong code Network fl uctuations Lifecycle actions
20. Issue due to wrong code Network fl uctuations Lifecycle actions Device
21. Issue due to wrong code Network fl uctuations Lifecycle actions Device OEM
22. Issue due to wrong code Network fl uctuations Lifecycle actions Device OEM Pyramid of problems
23. Issue due to wrong code Network fl uctuations Lifecycle actions Device OEM Pyramid of problems
24. Existing tools
25. System Inputs Outputs
26. System Inputs Outputs
27. Now what
28. Start End P1 P2 P3 P4
29. Custom Events App Monitoring - Crashes - Performance - … App Events - Navigation - Attributes - Custom events - …
30. Problems? • Disconnected systems • Sampling • Delays and interval con fi guration • Data privacy • Costs
31. OpenTelemetry
32. What is OpenTelemetry - Framework to collect telemetry data - Vendor agnostic - Works across frameworks using agent libraries - Allows control over export of data
33. OpenTelemetry Traces Metrics Logs
34. Span Start End t0 tN attributes
35. Span - Network Call Request Start • user identi fi er • os version • device model • network type Response Received
36. Trace Span Span Span Span Span Span Span
37. Trace Span Span Span Span Span Span Span trace id
38. Distributed Tracing System 1 System 2 System 3 Spans Spans Spans Trace
39. Distributed tracing on Mobile?
40. Mobile App UI
41. Mobile App Network Storage UI System Device
42. Mobile App Network Storage UI System Retro fi t Workmanager Sqlite Shared Pref Recyclerview Device Lifecycle Memory CPU
43. Mobile App Network Storage UI System Retro fi t Workmanager Sqlite Shared Pref Recyclerview Device Lifecycle Memory CPU Server Gateway Kafka DB
44. Mobile App Network Storage UI System Retro fi t Workmanager Sqlite Shared Pref Recyclerview Device Lifecycle Memory CPU Server Gateway Kafka DB Span Span Span Span Span Span
47. Additional Data Metrics - Counter - Timer - Histogram - Gauge Logs - Bridge to existing log libraries
48. Show me code
49. // Build instance val openTelemetry = otelRumBuilder.build().openTelemetry // Create a tracer openTelemetry.getTracer("network.call") // Create span val span = tracer.spanBuilder(spanName) .setAllAttributes(attributes) .startSpan()
50. // Create span processor val processor = BatchSpanProcessor.builder( OtlpHttpSpanExporter.builder() .setEndpoint(endPoint) .build() ) // Attach processor to instance otelRumBuilder.addTracerProviderCustomizer { builder -> builder.addSpanProcessor(processor) }
51. // Build instance val openTelemetry = otelRumBuilder.build().openTelemetry // Create meter val meter = openTelemetry.getMeter("success.responses") // Build counter metric meter.counterBuilder(name) .setDescription(description) .setUnit(unit) .build()
52. val reader = PeriodicMetricReader.builder( OtlpHttpMetricExporter.builder() .setEndpoint(endPoint) .build() ) otelRumBuilder.addMeterProviderCustomizer { builder -> builder.registerMetricReader(reader) }
53. OpenTelemetry Android
54. Auto Instrumentation • App Launch trace • Lifecycle traces • Network call traces • Slow rendering traces • Crash detection • Network change detection • Disk persistence • Automatic device attributes
55. Data Visualisation
56. Visualisations (OTLP)
57. Visualisations (OTLP) Otel Collector
58. Why OpenTelemetry
59. • Powerful API • Open and mature ecosystem • Total control over data • Collaborative development • Observability beyond crashes
60. Is it stable?
61. Is it stable?
62. Do you need advanced observability?
63. • It depends • Without scale, existing solutions might just work. • Ecosystem under active development
64. https://github.com/open-telemetry/opentelemetry-android
65. Fin