docs: document KMS-encrypted S3 buckets for log object storage - #6497
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Adds guidance on the extra IAM and KMS key policy grants Bifrost's credentials need when the S3 bucket used for log offload has SSE-KMS default encryption enabled.
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WalkthroughThe AWS S3 object storage documentation now explains KMS permissions, key policies, default encryption, and encryption-header limitations for Bifrost uploads. ChangesS3 KMS encryption documentation
Estimated code review effort: 1 (Trivial) | ~3 minutes Merge Risk: ⚪ Minimal · up to This is a localized documentation update that does not change runtime behavior or production configuration, so no actionable merge-blocking risk remains after normal checks and review. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@docs/deployment-guides/config-json/storage.mdx`:
- Around line 387-405: Update the KMS key-policy instruction in the “Using KMS
to encrypt your bucket?” section to apply only to customer-managed KMS keys;
clarify that AWS-managed aws/s3 keys cannot have their key policies modified by
customers, while preserving the existing IAM policy guidance.
- Around line 407-409: Update the Default encryption documentation in the Info
block to clarify that it removes only the need for encryption headers from the
uploader, while required KMS permissions remain necessary when using a
customer-managed key.
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Scope the key-policy step to customer-managed KMS keys (AWS-managed aws/s3 keys don't allow policy edits), and clarify that default encryption only removes the need for request-level encryption headers, not the underlying KMS permission requirements.
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Inline comments:
In `@docs/deployment-guides/config-json/storage.mdx`:
- Line 408: Update the encryption guidance in the storage configuration
documentation to scope kms:GenerateDataKey and kms:Decrypt requirements to
customer-managed KMS keys only; clarify that the AWS-managed aws/s3 key relies
on same-account access and S3 permissions. Preserve the note that Bifrost sends
no SSE header and therefore uploads fail when a bucket policy requires one.
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akshaydeo
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Aug 27, 2026
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* removing sampling rate from guardrail provider config * [fix]: framework/tracing - emit BilledUsage token and cost attributes on failed requests (#6259) * [fix]: framework/tracing - emit BilledUsage token and cost attributes on failed requests #4575 propagates provider-billed usage for failed and cancelled requests via BifrostError.ExtraFields.BilledUsage, and governance and the logging plugin both charge for it. The tracing layer never reads it, so every span-based consumer -- the otel plugin and the BigQuery, Datadog, Kafka and Pub/Sub connectors -- still records zero tokens and zero cost for those requests. PopulateErrorAttributes now emits input/output/total tokens and cached-read details from BilledUsage, mirroring the success path's spec and legacy attribute names. The tracer's cost block falls back to CalculateCostForUsage when there is no response but usage was billed, pricing it from the Provider, RequestType and model fields that BifrostError.PopulateExtraFields guarantees are populated. Requests that consumed no tokens keep BilledUsage nil and emit nothing, so no zero-cost rows are introduced. Affected packages: - framework/tracing/llmspan.go - framework/tracing/tracer.go - framework/tracing/llmspan_test.go Co-Authored-By: Claude <noreply@anthropic.com> * [fix]: framework/tracing - prefer BilledUsage over the accumulated response when pricing a failed turn A cancelled stream reaches PopulateLLMResponseAttributes with BOTH a non-nil accumulated response and a non-nil error: core/providers/utils calls it with accumulatedResp when GetAccumulatedChunks returned data. The accumulated response is missing the final usage chunk, so pricing it yields 0 and the BilledUsage branch was never reached. Production data confirms this is the dominant shape: of 2,513 cancelled Anthropic spans over seven weeks, 2,488 had accumulated chunks, so the resp != nil branch won every time. Check BilledUsage first and fall back to the response, so a failed turn is priced from what the provider actually billed. The token attributes already had the right precedence, since Tracer merges error attributes after response attributes; a test now pins that ordering. Affected packages: - framework/tracing/tracer.go - framework/tracing/llmspan_test.go Co-Authored-By: Claude <noreply@anthropic.com> * [fix]: framework/tracing - emit the spec cached-read key on failed spans too The error path emitted only the legacy nested cached-read keys and missed gen_ai.usage.cache_read.input_tokens, which both success paths emit. Add the spec key alongside the legacy ones so failed and successful spans share one attribute contract. Affected packages: - framework/tracing/llmspan.go - framework/tracing/llmspan_test.go Co-Authored-By: Claude <noreply@anthropic.com> * fix(tracing): emit cache-write usage on failed spans * fix(tracing): address review - drop retired attrs, gate totals, split cache namespaces, guard cost - Remove AttrPromptTokens/AttrCompletionTokens/AttrPromptTokenDetailsCached* from the error path; #6403 deleted them from core. - Gate token totals on > 0 so a details-only BilledUsage does not stamp explicit zeros on the span. - Emit one cache namespace per request type (input_token_details.* for Responses, prompt_token_details.* otherwise), matching the success paths. - Only write gen_ai.usage.cost when > 0, falling back to the provider-reported BilledUsage.Cost when the catalog cannot price the model. Co-Authored-By: Claude <noreply@anthropic.com> * fix(tracing): drop zero response aggregates when the error carries BilledUsage A cancelled stream's accumulated response has usage with zero totals (the final usage chunk never arrived). Those zeros were stamped on the span before the gated error path merged, so a details-only BilledUsage left a false zero in gen_ai.usage.*. Skip them at the merge site; success spans and unbilled failures are unchanged. Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Pratham Mishra <99235987+Pratham-Mishra04@users.noreply.github.com> * fix: clear passthrough for non claude models in non native claude model providers * fix: unsupported reasoning signature to be stripped * docs: document KMS-encrypted S3 buckets for log object storage (#6497) * docs: document KMS-encrypted S3 buckets for log object storage Adds guidance on the extra IAM and KMS key policy grants Bifrost's credentials need when the S3 bucket used for log offload has SSE-KMS default encryption enabled. * docs: address CodeRabbit feedback on KMS encryption section Scope the key-policy step to customer-managed KMS keys (AWS-managed aws/s3 keys don't allow policy edits), and clarify that default encryption only removes the need for request-level encryption headers, not the underlying KMS permission requirements. * core version bump (#6599) ## Summary Bumps the `bifrost/core` version from `v1.7.11` to `v1.8.3` across test seed commands, and increments the core module version to `v1.8.4`. ## Changes - Core version incremented from `1.8.3` to `1.8.4` - `bifrost/core` dependency updated from `v1.7.11` to `v1.8.3` in `e2eseed`, `seed`, and `seedvks` test command modules ## Type of change - [ ] Bug fix - [ ] Feature - [ ] Refactor - [ ] Documentation - [x] Chore/CI ## Affected areas - [x] Core (Go) - [ ] Transports (HTTP) - [ ] Providers/Integrations - [ ] Plugins - [ ] UI (React) - [ ] Docs ## How to test ```sh go version go test ./... ``` ## Screenshots/Recordings N/A ## Breaking changes - [ ] Yes - [x] No ## Related issues N/A ## Security considerations No security implications. ## Checklist - [ ] I read `docs/contributing/README.md` and followed the guidelines - [ ] I added/updated tests where appropriate - [ ] I updated documentation where needed - [ ] I verified builds succeed (Go and UI) - [ ] I verified the CI pipeline passes locally if applicable --------- Co-authored-by: Madhu Shantan <madhushantangot@gmail.com> Co-authored-by: Victor Demonchy <demonchy.v@gmail.com> Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Pratham Mishra <99235987+Pratham-Mishra04@users.noreply.github.com> Co-authored-by: tejas ghatte <tejas@tejass-MacBook-Pro.local> Co-authored-by: Raggav Subramani <raggav.subramani@gmail.com>
occcat
pushed a commit
to occcat/bifrost
that referenced
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Sep 2, 2026
* removing sampling rate from guardrail provider config * [fix]: framework/tracing - emit BilledUsage token and cost attributes on failed requests (maximhq#6259) * [fix]: framework/tracing - emit BilledUsage token and cost attributes on failed requests maximhq#4575 propagates provider-billed usage for failed and cancelled requests via BifrostError.ExtraFields.BilledUsage, and governance and the logging plugin both charge for it. The tracing layer never reads it, so every span-based consumer -- the otel plugin and the BigQuery, Datadog, Kafka and Pub/Sub connectors -- still records zero tokens and zero cost for those requests. PopulateErrorAttributes now emits input/output/total tokens and cached-read details from BilledUsage, mirroring the success path's spec and legacy attribute names. The tracer's cost block falls back to CalculateCostForUsage when there is no response but usage was billed, pricing it from the Provider, RequestType and model fields that BifrostError.PopulateExtraFields guarantees are populated. Requests that consumed no tokens keep BilledUsage nil and emit nothing, so no zero-cost rows are introduced. Affected packages: - framework/tracing/llmspan.go - framework/tracing/tracer.go - framework/tracing/llmspan_test.go Co-Authored-By: Claude <noreply@anthropic.com> * [fix]: framework/tracing - prefer BilledUsage over the accumulated response when pricing a failed turn A cancelled stream reaches PopulateLLMResponseAttributes with BOTH a non-nil accumulated response and a non-nil error: core/providers/utils calls it with accumulatedResp when GetAccumulatedChunks returned data. The accumulated response is missing the final usage chunk, so pricing it yields 0 and the BilledUsage branch was never reached. Production data confirms this is the dominant shape: of 2,513 cancelled Anthropic spans over seven weeks, 2,488 had accumulated chunks, so the resp != nil branch won every time. Check BilledUsage first and fall back to the response, so a failed turn is priced from what the provider actually billed. The token attributes already had the right precedence, since Tracer merges error attributes after response attributes; a test now pins that ordering. Affected packages: - framework/tracing/tracer.go - framework/tracing/llmspan_test.go Co-Authored-By: Claude <noreply@anthropic.com> * [fix]: framework/tracing - emit the spec cached-read key on failed spans too The error path emitted only the legacy nested cached-read keys and missed gen_ai.usage.cache_read.input_tokens, which both success paths emit. Add the spec key alongside the legacy ones so failed and successful spans share one attribute contract. Affected packages: - framework/tracing/llmspan.go - framework/tracing/llmspan_test.go Co-Authored-By: Claude <noreply@anthropic.com> * fix(tracing): emit cache-write usage on failed spans * fix(tracing): address review - drop retired attrs, gate totals, split cache namespaces, guard cost - Remove AttrPromptTokens/AttrCompletionTokens/AttrPromptTokenDetailsCached* from the error path; maximhq#6403 deleted them from core. - Gate token totals on > 0 so a details-only BilledUsage does not stamp explicit zeros on the span. - Emit one cache namespace per request type (input_token_details.* for Responses, prompt_token_details.* otherwise), matching the success paths. - Only write gen_ai.usage.cost when > 0, falling back to the provider-reported BilledUsage.Cost when the catalog cannot price the model. Co-Authored-By: Claude <noreply@anthropic.com> * fix(tracing): drop zero response aggregates when the error carries BilledUsage A cancelled stream's accumulated response has usage with zero totals (the final usage chunk never arrived). Those zeros were stamped on the span before the gated error path merged, so a details-only BilledUsage left a false zero in gen_ai.usage.*. Skip them at the merge site; success spans and unbilled failures are unchanged. Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Pratham Mishra <99235987+Pratham-Mishra04@users.noreply.github.com> * fix: clear passthrough for non claude models in non native claude model providers * fix: unsupported reasoning signature to be stripped * docs: document KMS-encrypted S3 buckets for log object storage (maximhq#6497) * docs: document KMS-encrypted S3 buckets for log object storage Adds guidance on the extra IAM and KMS key policy grants Bifrost's credentials need when the S3 bucket used for log offload has SSE-KMS default encryption enabled. * docs: address CodeRabbit feedback on KMS encryption section Scope the key-policy step to customer-managed KMS keys (AWS-managed aws/s3 keys don't allow policy edits), and clarify that default encryption only removes the need for request-level encryption headers, not the underlying KMS permission requirements. * core version bump (maximhq#6599) ## Summary Bumps the `bifrost/core` version from `v1.7.11` to `v1.8.3` across test seed commands, and increments the core module version to `v1.8.4`. ## Changes - Core version incremented from `1.8.3` to `1.8.4` - `bifrost/core` dependency updated from `v1.7.11` to `v1.8.3` in `e2eseed`, `seed`, and `seedvks` test command modules ## Type of change - [ ] Bug fix - [ ] Feature - [ ] Refactor - [ ] Documentation - [x] Chore/CI ## Affected areas - [x] Core (Go) - [ ] Transports (HTTP) - [ ] Providers/Integrations - [ ] Plugins - [ ] UI (React) - [ ] Docs ## How to test ```sh go version go test ./... ``` ## Screenshots/Recordings N/A ## Breaking changes - [ ] Yes - [x] No ## Related issues N/A ## Security considerations No security implications. ## Checklist - [ ] I read `docs/contributing/README.md` and followed the guidelines - [ ] I added/updated tests where appropriate - [ ] I updated documentation where needed - [ ] I verified builds succeed (Go and UI) - [ ] I verified the CI pipeline passes locally if applicable --------- Co-authored-by: Madhu Shantan <madhushantangot@gmail.com> Co-authored-by: Victor Demonchy <demonchy.v@gmail.com> Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Pratham Mishra <99235987+Pratham-Mishra04@users.noreply.github.com> Co-authored-by: tejas ghatte <tejas@tejass-MacBook-Pro.local> Co-authored-by: Raggav Subramani <raggav.subramani@gmail.com>
occcat
pushed a commit
to occcat/bifrost
that referenced
this pull request
Sep 2, 2026
…hq#6497) * docs: document KMS-encrypted S3 buckets for log object storage Adds guidance on the extra IAM and KMS key policy grants Bifrost's credentials need when the S3 bucket used for log offload has SSE-KMS default encryption enabled. * docs: address CodeRabbit feedback on KMS encryption section Scope the key-policy step to customer-managed KMS keys (AWS-managed aws/s3 keys don't allow policy edits), and clarify that default encryption only removes the need for request-level encryption headers, not the underlying KMS permission requirements.
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Summary
Documents how KMS-encrypted S3 buckets interact with Bifrost's log object storage, so operators using SSE-KMS on their logs bucket know what to configure on the Bifrost/AWS side.
Changes
docs/deployment-guides/config-json/storage.mdx.kms:GenerateDataKey,kms:Decrypt) Bifrost's credentials need, the separate KMS key policy grant required on top of IAM, and a compatibility note about bucket policies that deny uploads lacking the SSE header.Type of change
Affected areas
How to test
Docs-only change, no code paths affected.
Then open Deployment Guides > Storage >
logs_store> Object Storage for Logs > AWS S3 tab and verify the new "Using KMS to encrypt your bucket?" accordion renders correctly.Screenshots/Recordings
N/A (no UI changes)
Breaking changes
Related issues
N/A
Security considerations
Documentation only. Clarifies IAM/KMS key policy permissions required for SSE-KMS-encrypted S3 buckets; does not change any runtime behavior or credential handling.
Checklist
docs/contributing/README.mdand followed the guidelines