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(feat): Enable Exception Replay in Lambda #592

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Merged
merged 2 commits into from
May 9, 2025
Merged

(feat): Enable Exception Replay in Lambda #592

merged 2 commits into from
May 9, 2025

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nhulston
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@nhulston nhulston commented May 9, 2025 •
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What does this PR do?

Enable exception replay in Lambda if DD_EXCEPTION_REPLAY_ENABLED=true

Exception replay blog post

Note: At the moment, this only works when DD_EXTENSION_VERSION=compatibility. This is because we have not yet implemented these endpoints in the Rust extension:

  • /debugger/v1/diagnostics
  • /debugger/v1/input

Motivation

Support exception replay in Lambda

Testing Guidelines

Manually. It works when compatibility mode is enabled:
Screenshot 2025-05-09 at 12 55 52 PM

Additional Notes

Types of Changes

  • Bug fix
  • New feature
  • Breaking change
  • Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

  • This PR's description is comprehensive
  • This PR contains breaking changes that are documented in the description
  • This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
  • This PR impacts documentation, and it has been updated (or a ticket has been logged)
  • This PR's changes are covered by the automated tests
  • This PR collects user input/sensitive content into Datadog
  • This PR passes the integration tests (ask a Datadog member to run the tests)

@nhulston nhulston requested a review from a team as a code owner May 9, 2025 16:57
purple4reina
purple4reina approved these changes May 9, 2025
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Code looks great. Can you help me understand what this Exception Replay feature is all about?

@nhulston
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nhulston commented May 9, 2025 •
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Code looks great. Can you help me understand what this Exception Replay feature is all about?

@purple4reina Sure! It basically just captures all the local variables and their values at the time of an exception, kind of like a debugger in an IDE. Here's a blog post: https://www.datadoghq.com/blog/exception-replay-datadog/

Currently only supported on Python, Java, and .NET tracers

Gonna update the PR with that blog post

@nhulston nhulston merged commit 1677473 into main May 9, 2025
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@nhulston nhulston deleted the nicholas.hulston/enable-exception-replay branch May 9, 2025 17:21
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@purple4reina purple4reina purple4reina approved these changes

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@nhulston @purple4reina