feat(core)!: rfc 0048 slice 1 — one tenant grammar, verbatim graph objects - #714
Conversation
…-encoding One rule at one place: 1-128 bytes of ASCII graphic minus ':', '#', '/' (ourios_core::tenant::validate_tenant_id + TenantId::try_new). TenantObjects speaks it verbatim — encode_tenant_segment is gone, the separator is unambiguous by grammar, and the 128-byte bound keeps every composed object under the 256-byte full-string cap by construction. Breaking: graph objects for tenants containing '/' or '%' change shape; pre-production, no dual-read (RFC 0048 §3.1). BREAKING CHANGE: OpenFGA object ids use the verbatim tenant; tenants outside the RFC 0048 grammar are no longer addressable in the graph. Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
The OTLP selector, querier header, MCP tenant argument, auth.tokens[].tenants and the OIDC tenant claim all route through ourios_core::tenant::validate_tenant_id — one rule, one message shape. The selector bound tightens 256 to 128 and the RFC 0046 non-ASCII-over- HTTP caveat is gone (the grammar is ASCII on every transport). BREAKING CHANGE: tenant selectors outside the RFC 0048 grammar (>128 bytes, '/', ':', '#', whitespace, non-ASCII) are refused at every boundary. Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
…batim on a real graph The querier header and the MCP tenant argument reject every off-grammar id with the named reason; behind the Docker gate, a 128-byte tenant's 114-byte conversation id composes a 256-byte object a real OpenFGA accepts and Reads byte-for-byte, a '/' id fits, and a 115-byte id is skipped by the emitter before any request. The RFC 0046 end-to-end test carries the OTLP arms of RFC0048.1. New container test joins the openfga-resolver CI job. Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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📝 WalkthroughWalkthroughThe PR adds shared RFC 0048 tenant-ID validation and applies it across core authentication, selectors, server inputs, and OpenFGA object naming. It updates related tests and adds HTTP and Docker-backed integration coverage for grammar, length limits, and verbatim object handling. ChangesTenant grammar enforcement
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to The PR centralizes tenant-id validation, but the MCP boundary can still accept Unicode-whitespace-wrapped values that are outside the declared grammar, creating inconsistent tenant identity handling. This is a bounded correctness risk that should be fixed or explicitly accepted; the remaining findings are cosmetic. Sequence Diagram(s)sequenceDiagram
participant Client
participant QuerierHTTP
participant tenant_from_headers
participant TenantObjects
participant OpenFGA
Client->>QuerierHTTP: Send tenant header
QuerierHTTP->>tenant_from_headers: Validate tenant value
tenant_from_headers-->>QuerierHTTP: Return TenantId or HTTP 400 path
QuerierHTTP->>TenantObjects: Build tenant-scoped objects
TenantObjects->>OpenFGA: Read verbatim object names
OpenFGA-->>QuerierHTTP: Return matching object bytes
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The rfc0047_1_to_3 block asserted percent-encoded tenant segments; under the RFC 0048 grammar a/b has no graph objects at all, ab and a never alias by construction, and % is a plain character — asserted against the real server (RFC 0048 §6: the encoding assertions flip). Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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Pull request overview
Implements RFC 0048 §3.1 “one tenant grammar” (slice 1) across core and server boundaries, and removes tenant-segment encoding so OpenFGA object names are composed verbatim under the 256-byte cap by construction.
Changes:
- Added a single canonical tenant-id grammar (
validate_tenant_id+TenantId::try_new) and applied it across request/config boundaries. - Updated OpenFGA tenant-scoped object composition to use verbatim tenant segments (no encoding), relying on the grammar bound for object-size safety.
- Added/updated integration tests (including a Docker-gated real-OpenFGA test) and wired the ignored container test into CI’s openfga-resolver job.
Reviewed changes
Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| crates/ourios-server/tests/it/rfc0048_grammar.rs | New it-test for querier header + MCP tenant argument grammar; Docker-gated real OpenFGA verbatim-object test |
| crates/ourios-server/tests/it/rfc0046_out_of_band_tenancy.rs | Updated OTLP e2e tenancy scenarios to RFC 0048 grammar + tightened length bound |
| crates/ourios-server/tests/it/main.rs | Registers new RFC 0048 it-test module |
| crates/ourios-server/src/visibility.rs | Updates “tenant unaddressable” rejection message to RFC 0048 grammar |
| crates/ourios-server/src/querier.rs | Uses TenantId::try_new when reading tenant header |
| crates/ourios-server/src/mcp.rs | Validates MCP tenant argument with RFC 0048 grammar + adds unit test |
| crates/ourios-ingester/src/receiver/selector.rs | Reworks selector normalization/errors to match RFC 0048 tenant grammar and 128-byte cap |
| crates/ourios-core/src/tenant.rs | Adds RFC 0048 tenant grammar, error type, max bound, and tests |
| crates/ourios-core/src/auth/openfga/mod.rs | Removes tenant-segment encoding; composes tenant-scoped OpenFGA objects verbatim |
| crates/ourios-core/src/auth/openfga/client.rs | Updates resolver test expectations for verbatim tenant scoping and invalid-tenant behavior |
| crates/ourios-core/src/auth/oidc.rs | Applies RFC 0048 tenant grammar to OIDC tenant claim entries |
| crates/ourios-core/src/auth/mod.rs | Applies RFC 0048 tenant grammar to auth.tokens[].tenants parsing/validation |
| .github/workflows/ci.yml | Adds the ignored real-OpenFGA RFC0048.2 test to the openfga-resolver job list |
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Actionable comments posted: 2
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Inline comments:
In `@crates/ourios-core/src/tenant.rs`:
- Around line 43-46: Update the InvalidCharacter display formatting in the
Tenant error implementation to remove the extra spaces after the semicolon,
leaving exactly one space before the found value.
Apply the same fix in `@crates/ourios-core/src/tenant.rs` around lines 133 - 178:
The same formatting defect appears in the `InvalidCharacter` diagnostic.
In `@crates/ourios-server/src/mcp.rs`:
- Around line 210-214: Update normalize_tenant in
crates/ourios-server/src/mcp.rs:210-214 to use ASCII-only trimming before
validate_tenant_id, and add the Unicode-whitespace input to
tenant_argument_speaks_the_grammar at crates/ourios-server/src/mcp.rs:927-950.
The querier header path at crates/ourios-server/src/querier.rs:589-591 requires
no direct change.
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📒 Files selected for processing (13)
.github/workflows/ci.ymlcrates/ourios-core/src/auth/mod.rscrates/ourios-core/src/auth/oidc.rscrates/ourios-core/src/auth/openfga/client.rscrates/ourios-core/src/auth/openfga/mod.rscrates/ourios-core/src/tenant.rscrates/ourios-ingester/src/receiver/selector.rscrates/ourios-server/src/mcp.rscrates/ourios-server/src/querier.rscrates/ourios-server/src/visibility.rscrates/ourios-server/tests/it/main.rscrates/ourios-server/tests/it/rfc0046_out_of_band_tenancy.rscrates/ourios-server/tests/it/rfc0048_grammar.rs
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…trim; display spacing The querier header distinguishes missing (absent / empty, the pinned RFC 0026 kind) from invalid_tenant (off-grammar) and not-text obs-text bytes; the MCP tenant argument trims ASCII whitespace only, so an NBSP reaches the validator as the off-grammar character it is; the TenantIdError display loses the accidental space run. Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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Pull request overview
Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.
Suppressed comments (1)
crates/ourios-server/src/querier.rs:1262
- The test comment is inconsistent with the asserted behavior: a present-but-empty tenant header is treated as
Missing(to preserve the RFC 0026missing_tenantcontract), while only off-grammar values areInvalid. Updating the comment avoids confusing future readers and prevents incorrect assumptions about the surface kinds.
// RFC0048.1: empty-after-trim and off-grammar values are `Invalid`
// (a distinct kind at the surface), never conflated with absent.
assert!(
…ssing_tenant Signed-off-by: Jens Holdgaard Pedersen <Jens@holdgaard.org>
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Pull request overview
Copilot reviewed 14 out of 14 changed files in this pull request and generated no new comments.
Suppressed comments (3)
Previously missed (3) — in code that hasn't changed since the last review.
crates/ourios-core/src/tenant.rs:19
TenantIdErroris a public enum that’s likely to grow as additional tenant-grammar constraints or parsing contexts are introduced. Most other public error enums in this repo are marked#[non_exhaustive]to avoid downstream breakage from new variants (e.g.TokenizeErrorincrates/ourios-miner/src/tokenize.rs). Consider markingTenantIdErroras#[non_exhaustive]as well.
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum TenantIdError {
crates/ourios-server/src/querier.rs:605
- The doc comment for
tenant_from_headerssaysMissingis returned when the header is absent “(or opaque bytes)”, but opaque/non-visible-ASCII bytes are actually mapped toTenantHeaderError::NotText(see theto_str()branch). This is a contract/documentation mismatch that can confuse future callers.
/// Read + validate the `X-Ourios-Tenant` header: `Missing` when absent
/// (or opaque bytes), else the RFC 0048 §3.1 grammar's verdict — the two
/// refusals carry distinct kinds at the call site.
crates/ourios-core/src/auth/openfga/mod.rs:615
- This doc comment claims the 128-byte tenant bound keeps every composed object (including
conversation:<T>/<id>) under OpenFGA’s 256-byte cap “by construction”, but the<id>portion can still make the full object exceed the cap (andconversation()itself does not validate). The bound guarantees the prefixes fit; call sites still needconversation_fitsfor the<id>budget.
/// The graph objects of `tenant`, or `None` when the value is outside
/// the RFC 0048 §3.1 tenant grammar. The 128-byte grammar bound keeps
/// every composed object (`tenant:`, `conversation:…/…`, `tool:…/…`)
/// under the 256-byte full-string cap by construction.
Summary
RFC 0048 implementation, slice 1 of ~6: the tenant id grammar (§3.1) — RFC0048.1 and RFC0048.2.
feat(core)!— one rule at one place:ourios_core::tenant::validate_tenant_id(+TenantId::try_new), 1–128 bytes of ASCII graphic minus:,#,/.TenantObjectsspeaks the tenant verbatim:encode_tenant_segmentis gone, the/separator is unambiguous by grammar, and the 128-byte bound keeps every composed object (tenant:,conversation:<T>/<id>,tool:<T>/<name>, the fixed RFC 0027 tool names included) under OpenFGA's 256-byte full-string cap by construction — the per-composition arithmetic from fix(core): object cap covers the full type:id string, not the id half #713 collapses into the grammar.feat(server)!— every boundary routes through the one function: OTLP selector (HTTP + gRPC; bound tightens 256→128, the RFC 0046 non-ASCII-over-HTTP caveat is gone), querier header, MCPtenantargument,auth.tokens[].tenants, OIDC tenant claim. Same named reason everywhere (RFC0048.1).rfc0048_grammarit-test (querier 400s + MCP invalid_params), and a new real-OpenFGA container test (rfc0048_2): a 128-byte tenant + 114-byte id composes a 256-byte object the server accepts andReads byte-for-byte, a/-bearing id fits, a 115-byte id is skipped by the emitter before any request. Joined to theopenfga-resolverCI job.Invariants / hazards
§3.7 tenancy: the change narrows the accepted tenant vocabulary at every boundary simultaneously (one grammar, applied once at extraction) and only removes an encoding layer between the boundaries and the graph — fail-closed behaviour for off-grammar values is preserved (
400/INVALID_ARGUMENT/config error/unverifiable token). Pre-production!per RFC 0048 §3.1; the RFC 0005 §3.4 storage-path percent-encoding is untouched.Contract-change note (§6.2): the RFC 0046 tests asserting non-ASCII/256-byte/
/-bearing selectors were updated to the RFC 0048 grammar — the contract change is RFC 0048 itself (merged #711, amending RFC 0046 §3.1).Verification
cargo fmt --check,clippy --all-targets --all-features -D warnings,cargo test --workspace --all-features— green.rfc0048_2andrfc0047_10_11pass.Summary by CodeRabbit
:,#, or/.