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Folds in v0.7.1 (release #290 + optimize/write-path/internal-table-compaction fixes #288/#291/#297) under the MCP branch. Conflict resolutions (5 files): - crates/omnigraph-server/Cargo.toml: take main's 0.7.1 path-dep constraints; keep our omnigraph-mcp dep (bumped to 0.7.1) + http dep. - crates/omnigraph-server/src/handlers.rs: keep our server_list_queries doc-comment (exposed @mcp(expose) subset, invoke_query-gated) — it supersedes main's pre-@mcp(expose) text, since this branch adds the per-query expose flag. - docs/user/operations/server.md: keep our GET /queries description (invoke_query gate + @mcp(expose) exposure) over main's read-gated/list-all text. - docs/dev/index.md: keep both in-flight RFC rows; renumber this branch's tenancy RFC 013 -> 014 (rfc-014-tenancy-cells.md) since main now owns RFC-013 (rfc-013-write-path-latency.md). Title + index link updated; link-check green. - openapi.json: regenerated from merged source (OMNIGRAPH_UPDATE_OPENAPI=1) — now info.version 0.7.1 with our invoke_query/@mcp schema. Coherence: omnigraph-mcp bumped 0.7.0 -> 0.7.1 to match the workspace; Cargo.lock updated. cargo build --workspace green; server/mcp/api-types/compiler suites green (schema_routes.rs reopen-after-apply flakes under parallel IO on a near-full disk, passes single-threaded — a pre-existing main test, unchanged by the merge).
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6.9 KiB
Developer Docs
Audience: contributors, maintainers, and coding agents
This is the contributor-facing entry point. These docs explain architecture, invariants, implementation contracts, test ownership, and upstream Lance constraints. User-facing behavior should still be documented through docs/user/index.md and the relevant public reference docs.
Required For Every Non-Trivial Change
| Need | Read |
|---|---|
| Architectural rules, known gaps, deny-list | invariants.md |
| Upstream Lance source-of-truth index | lance.md |
| Existing test coverage and test placement | testing.md |
Architecture And Storage
| Area | Read |
|---|---|
| System structure, L1/L2 framing, component diagrams | architecture.md |
| On-disk layout, manifest schema, URI behavior | storage.md |
| Direct-publish writes, D2, staged writes, recovery sidecars | writes.md |
| Query execution, mutation execution, loader flow | execution.md |
| Index lifecycle and graph topology indexes | indexes.md |
| Branch and commit internals | branches-commits.md |
| Three-way merge implementation and conflicts | merge.md |
| Diff/change-feed implementation | changes.md |
| Branch protection policy | branch-protection.md |
Language, Runtime, And Boundaries
| Area | Read |
|---|---|
| Schema grammar, catalog, migration planner | schema-language.md |
| Query grammar, IR, lints, mutation restrictions | query-language.md |
Embedding client and @embed integration |
embeddings.md |
| Cedar policy surface and server gating | policy.md |
| Server auth, OpenAPI, endpoint handlers | server.md |
| Error taxonomy and serialization | errors.md |
| Constants and tunables | constants.md |
| Transaction model public contract | transactions.md |
| User-doc coherence cleanup ledger | docs-issues.md |
Project Operations
| Area | Read |
|---|---|
| CI and release workflows | ci.md |
| Install and deployment packaging | install.md, deployment.md |
| Release history | releases/ |
Contribution & Governance
| Area | Read |
|---|---|
| How to contribute (external) | CONTRIBUTING.md |
| Governance model, roles, decision authority | GOVERNANCE.md |
| Public contribution RFC track | rfcs/ |
The docs/rfcs/ track is the public, externally-authorable RFC process. The
maintainer/internal RFCs below (rfc-00N-*.md) are a separate, team-owned
track; don't conflate the two.
Case Studies
Worked write-ups of specific bugs — root cause, fix, and the reasoning that ruled out the tempting-but-wrong alternatives. Read these for the debugging pattern, not just the outcome.
| Area | Read |
|---|---|
| camelCase property filters lowercased at runtime (#283) — two engine→Lance boundaries, two different fixes | bug-case-fix.md |
Active Implementation Plans
Working documents for in-flight feature work. Removed when the work lands.
| Area | Read |
|---|---|
Schema-lint chassis v1 (MR-694) — --allow-data-loss, soft/hard drops |
schema-lint-v1-plan.md |
| Inline + stored queries, request/response envelope, MCP (MR-656 / MR-976 / MR-969) | rfc-001-queries-envelope-mcp.md |
| Config & CLI architecture — layered config, client targeting, file naming (MR-973 / MR-974 / MR-981) | rfc-002-config-cli-architecture.md |
| MCP server surface — full tool parity, stored queries, modular auth (MR-969 / MR-956 / MR-974) | rfc-003-mcp-server-surface.md |
| Future cluster control plane — declarative as-code config, JSON state ledger, reconciler | cluster-config-specs.md, cluster-axioms.md, cluster-config-implementation-spec.md |
| Cluster graph & schema apply — Phase 4 sidecars, roll-forward recovery, approval artifacts | rfc-004-cluster-graph-schema-apply.md |
| Server boots from cluster state — Phase 5 mode switch, applied-revision serving | rfc-005-server-cluster-boot.md |
Per-operator config — ~/.omnigraph/ identity, keyed credentials, named servers (the operator slice of RFC-002) |
rfc-007-operator-config.md |
Deprecate omnigraph.yaml — one concern per config surface; key-by-key migration map and staged retirement |
rfc-008-deprecate-omnigraph-yaml.md |
Unify CLI embedded/remote access paths — parity referee, shared wire-DTO crate, GraphClient trait, declared plane capabilities |
rfc-009-unify-access-paths.md |
| Restructure the CLI around explicit planes — one graph-addressing model, declared capability surface, plane-grouped help (expands RFC-009 Phase 4) | rfc-010-cli-planes-restructure.md |
CLI refactoring — one addressing & config model post-omnigraph.yaml: scope + --graph + derived access path, served-default / privileged-direct, profiles, named queries, capability classifier (completes RFC-008) |
rfc-011-cli-refactoring.md |
Provider-independent embedding configuration — one resolved EmbeddingConfig + sealed provider enum (Gemini/OpenAI/Mock), identity recorded in the schema IR, query-time same-space validation, NFR floor |
rfc-012-embedding-provider-config.md |
Write-path latency — capture-once WriteTxn, version-pinned opens, one GraphPublishAuthority fed declarative PublishPlans, manifest-authoritative lineage, epoch fence, bounded history (compaction + cleanup), and an IO-counted cost contract (iss-write-s3-roundtrip-amplification, iss-991) |
rfc-013-write-path-latency.md |
Tenancy model — cluster-as-tenant cells (silo the data, pool the compute): CellRuntime lifts the per-cluster runtime, one server hosts N cells resolved by host before auth, WorkOS org→cell 1:1 with per-cell audience, tiered dedicated/pooled/on-prem on one binary |
rfc-014-tenancy-cells.md |
Boundary
Developer docs may mention implementation details, stale gaps, upstream Lance blockers, and review rules. User docs should not require that context unless the detail changes the public contract.