sns: upgrade sigv4 to v0.5.0 and support SessionName and Tags - #5534
sns: upgrade sigv4 to v0.5.0 and support SessionName and Tags#5534dongjiang1989 wants to merge 1 commit into
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📝 WalkthroughWalkthroughThe SNS receiver adds optional STS session names and session tags to SigV4 role assumption. Validation enforces AWS constraints. Documentation and AWS SDK and Prometheus dependencies are updated. ChangesSNS STS session options
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🟡 Moderate · up to The PR adds optional session names and tags to SNS role assumptions, but invalid tag inputs may still cause runtime AssumeRole failures and the documentation does not state the required sts:TagSession permission. Tag-enabled deployments therefore need validation and IAM follow-up before this change is fully merge-ready. Sequence Diagram(s)sequenceDiagram
participant SNSReceiver
participant STS
participant SNS
SNSReceiver->>STS: Assume role with session name and tags
STS-->>SNSReceiver: Return temporary credentials
SNSReceiver->>SNS: Create SNS client with credentials
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Description checkExplanation The description covers the feature, tests, documentation, dependency upgrade, implementation details, configuration example, release notes, and backward compatibility. It omits some non-applicable checklist items, but it is otherwise complete and relevant. Full details: Docstring CoverageExplanation Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 3 files. (1 skipped: 1 unsupported.)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@notify/sns/sns.go`:
- Around line 194-200: Update SigV4Config.Validate to reject more than 50
session tags, keys using the reserved “aws:” prefix, and tag keys or values
outside AWS’s allowed character pattern; ensure SNS’s
stscreds.AssumeRoleOptions.Tags path receives only validated tags. Document
these validation rules in docs/configuration.md at the specified section.
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docs/configuration.mdgo.modnotify/sns/sns.go
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- Call sigv4.Validate() to enforce field-level validation - Add 50-tag limit validation (AWS STS maximum) - Add reserved 'aws:' prefix validation for tag keys - Add comprehensive test cases for new validation rules - Update documentation with AWS constraints Addresses CodeRabbit review feedback for PR prometheus#5534. Signed-off-by: dongjiang1989 <dongjiang1989@126.com>
- Update github.com/prometheus/sigv4 from v0.4.1 to v0.5.0 - Add support for new SessionName field (maps to AWS RoleSessionName) - Add support for new Tags field (maps to STS session tags for cost allocation) - Both fields require role_arn and are passed to STS AssumeRole - Add comprehensive AWS STS tag validation: * Call sigv4.Validate() for field-level validation * Enforce 50-tag limit (AWS STS maximum) * Reject reserved 'aws:' prefix in tag keys - Add test cases for all validation rules - Update documentation with AWS constraints This mirrors the capability from prometheus/sigv4#76, enabling AWS billing chargeback by team/tenant/environment for SNS notifications through assumed roles. Signed-off-by: dongjiang1989 <dongjiang1989@126.com>
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Inline comments:
In `@docs/configuration.md`:
- Around line 1870-1875: Update the tags configuration documentation to state
that configuring session tags requires both sts:TagSession and sts:AssumeRole
permissions, placing this prerequisite next to the tags field.
In `@notify/sns/config.go`:
- Around line 78-80: Update SigV4Config.Validate and SNSConfig.Validate to
enforce all AWS STS session-tag constraints for both tag keys and values:
validate allowed characters, reject the reserved aws: prefix wherever required,
and use rune-based length checks rather than byte lengths while preserving
tag-count validation. Add boundary tests covering valid Unicode values and
invalid characters, prefixes, and length limits.
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SoloJacobs
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Why is this feature needed? I don't see the use case described anywhere.
Thanks @SoloJacobs This feature targets two primary enterprise scenarios:
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Pull Request Checklist
Which user-facing changes does this PR introduce?
Description
Upgrades
github.com/prometheus/sigv4from v0.4.1 to v0.5.0 and integrates the newSessionNameandTagsfields from the sigv4 configuration into the SNS notifier's STS AssumeRole flow.Changes
SessionName(maps to AWSRoleSessionName) andTags(maps to STS session tags) through tostscreds.AssumeRoleProvidersession_nameandtagsconfiguration optionsConfiguration Example
Both fields require
role_arnto be set. This mirrors the capability from prometheus/sigv4#76, enabling AWS billing chargeback by team/tenant/environment for SNS notifications through assumed roles.Backward compatible - existing configurations continue to work unchanged.