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Plumb error info to X-ray #544

Merged
merged 7 commits into from
Jan 25, 2024
Merged

Plumb error info to X-ray #544

merged 7 commits into from
Jan 25, 2024

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bmoffatt
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@bmoffatt bmoffatt commented Jan 4, 2024

Issue #, if available:

None

Description of changes:

This change fixes a divergence in behavior between the go1.x runtime, and the provided.XYZ runtime family. In go1.x, the github.com/aws/aws-lambda-go/messages/InvokeResponse_Error struct is wrapped in a certain way and then presented to the AWS X-Ray services in Lambda's default trace documents. In the Lambda Runtime API, this structure is passed as the Lambda-Runtime-Function-Xray-Error-Cause header.

Lambda's Java Runtime Interface Client is one public reference of this behavior. https://github.com/aws/aws-lambda-java-libs/blob/3d8dfb66f3a852bf69618bd5f66222692f1f5a49/aws-lambda-java-runtime-interface-client/src/main/java/com/amazonaws/services/lambda/runtime/api/client/AWSLambda.java#L264


When X-Ray is enabled for a function, this populates the "Exceptions" tab when viewing a trace.

Screenshot 2024-01-24 at 9 27 19 AM

For reference, here's what the tab renders for a go1.x function.

Screenshot 2024-01-24 at 9 29 52 AM

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

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codecov-commenter commented Jan 4, 2024

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (3a93ed1) 72.95% compared to head (7ba157c) 73.30%.

Files Patch % Lines
lambda/invoke_loop.go 85.71% 2 Missing and 2 partials ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##             main     #544      +/-   ##
==========================================
+ Coverage   72.95%   73.30%   +0.34%     
==========================================
  Files          26       26              
  Lines        1457     1487      +30     
==========================================
+ Hits         1063     1090      +27     
- Misses        322      324       +2     
- Partials       72       73       +1     

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@bmoffatt bmoffatt marked this pull request as ready for review January 24, 2024 19:07
@bmoffatt bmoffatt assigned bmoffatt, smirnoal, andclt and krk and unassigned bmoffatt Jan 24, 2024
@bmoffatt bmoffatt merged commit 58da2cc into aws:main Jan 25, 2024
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5 participants