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.NET: Prevent telemetry serialization failures from failing workflows - #7612
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Peter Ibekwe (peibekwe) merged 2 commits intoAug 11, 2026
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Pull request overview
Adds resilient workflow telemetry serialization so unsupported payloads fall back without disrupting execution.
Changes:
- Catches serialization failures and emits an [Unserializable: ...] fallback.
- Adds regression coverage for message delivery, executor telemetry, AOT-like failures, and custom exceptions.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| WorkflowTelemetryContext.cs | Adds telemetry serialization fallback. |
| ObservabilityTests.cs | Tests fallback behavior and workflow continuity. |
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dotnet/src/Microsoft.Agents.AI.Workflows/Observability/WorkflowTelemetryContext.cs
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Agent Framework Review — Iteration 1
Completed passes: 5 | Result: No high-severity findings
Scope: full PR (1 commit(s)): 7a45235d304e
Review passes
- Correctness (gpt-5.6-sol) — No issues found in this pass.
- Security Reliability (claude-opus-4.8) — No issues found in this pass.
- Test Coverage (gpt-5.6-sol) — No issues found in this pass.
- Failure Modes (claude-opus-4.8) — No issues found in this pass.
- Design Approach (claude-opus-4.8) — No issues found in this pass.
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August 11, 2026 04:56
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Agent Framework Review — Iteration 2
Completed passes: 5 | Result: No high-severity findings
Scope: 1 net-new commit(s): 1ca94adcb18d
Review passes
- Correctness (gpt-5.6-sol) — No issues found in this pass.
- Security Reliability (claude-opus-4.8) — No issues found in this pass.
- Test Coverage (gpt-5.6-sol) — No issues found in this pass.
- Failure Modes (claude-opus-4.8) — No issues found in this pass.
- Design Approach (claude-opus-4.8) — No issues found in this pass.
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Roger Barreto (rogerbarreto)
approved these changes
Aug 11, 2026
westey (westey-m)
approved these changes
Aug 11, 2026
This was referenced Aug 19, 2026
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Closed
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Description & Review Guide
Workflow telemetry now safely falls back to an [Unserializable: ...] representation when sensitive payload serialization fails, without disrupting execution or altering the message stream. Adds regression coverage for unsupported AIContent, executor telemetry, AOT, and arbitrary serialization exceptions.
CodeInterpreterToolCallContent that was mentioned in the issue is now supported by current MEAI serialization, but the underlying telemetry failure remained for unsupported or custom content types. This change safely falls back to [Unserializable: ...] without failing workflow execution or altering the message stream.
Fixes #5066
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