[Node] Custom Metrics E2E Test #481
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majanjua-amzn
previously approved these changes
Nov 13, 2025
thpierce
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Nov 15, 2025
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thpierce
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Pretty high level review, didn't go into great detail, but a few comments nonetheless
Co-authored-by: Mahad Janjua <134644284+majanjua-amzn@users.noreply.github.com>
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@majanjua-amzn, regarding your question on if we have a similar thing in Java. Yes! Since we have autoconfigure present in java we initialize it in the environment variables using |
majanjua-amzn
approved these changes
Dec 12, 2025
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This PR adds custom metrics to the existing sample app to verify public documentation is correct and functionality continues to work as changes happen in the future (Regression testing). Specifically for OpenTelemetry metrics using the CloudWatch Agent.
The changes made in this PR are:
New imports to index.js and dependencies to package.json (sample app's frontend service for the 'main' instance and the dependency installer)
Global meter, and gauge/histogram/counter added to FrontendServiceController.java from OTEL SDK Metrics page
Update to environment variables in main.tf
Update to jobs & env sections in node-ec2-default-test
Update to Cloudwatch agent config to include otlp ports
New Validator file to call updated predefined template file
Update to PredefinedExpectedTemplate to include new mustache file
New mustache file for validation of custom metrics
Git revert back to last passing CSHA: af399c7
Rollback procedure:
<Can we safely revert this commit if needed? If not, detail what must be done to safely revert and why it is needed.>
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e2e-playgroundin us-east-1 and eu-central-2e2e-playgroundin us-east-1 and eu-central-2e2e-playgroundin us-east-1 and eu-central-2By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.