Full rebrand across cosmetic branding, code identifiers, and infrastructure/data-plane naming, using the supplied Cairn OBS logo package. Cosmetic: favicon/logo swap (also closes a stale license-audit finding -- the old favicon was SvelteKit's unreplaced scaffold logo), new centered welcome landing page, larger/legible sidebar logo, page titles, CLAUDE.md/README/docs prose. Code identifiers: Go module path github.com/sentry/sentry -> github.com/cairnobs/cairnobs across all 13 modules and ~91 files (protoc regenerated); Rust crates sentry-agent/sentry-parser/sentry-search -> cairnobs-*; CLI sentryctl -> cairnobsctl; Terraform provider fully renamed (sentry_dashboard etc. -> cairnobs_dashboard, provider type, env vars); every session/auth cookie name; agent config paths and Windows service identity. Deliberately preserved: the gRPC wire protocol's protobuf packages (sentry.logs.v1, sentry.agent.v1) and their Go import directory (proto/sentry/...) -- renaming the wire-level package would break every currently-deployed agent binary (confirmed two real hosts, including mail.inbuxa.com, are actively streaming through this exact contract) until rebuilt and redeployed in lockstep with an ingest cutover. Only the Go module path wrapping the generated code changes. Infrastructure: every docker-compose container name (root and three component-level compose files); the Helm chart (directory, Chart.yaml, named-template helpers, all templates, values.yaml image repos); Kubernetes Operator (CRD group sentry.io -> cairnobs.io, both CRD YAML files, Go identifiers, RBAC markers); the coupled enterprise/tenantcrd package. Caught and fixed real path-coupling bugs along the way: the Helm chart's search/ingest volume mounts and the dev-only-credential detection constant vs. docker-compose.yml's literal values had to move together or a security warning would have silently stopped firing. Data plane: Postgres database sentry_metadata -> cairnobs_metadata and role sentry -> cairnobs; ClickHouse database sentry -> cairnobs; Kafka topic sentry.logs.raw -> cairnobs.logs.raw and its consumer groups. Source-level defaults, docker-compose.yml, and every migrate.sh/ provision script default updated together; already-applied migration files left untouched per this repo's immutable-migration convention. Verified at every layer: all 13 Go modules build/vet/test clean, both Rust workspaces (agent, search) build/clippy/test clean, npm run check/ build clean, docker compose config validates on all four compose files. Live-verified against a real docker stack multiple times through this work, including a final fresh-volume run confirming the actual renamed Postgres database/role, ClickHouse database, and Kafka topic all work end to end with a real login and query, zero console errors.
api
Cairn OBS's query API: a single POST /query endpoint accepting either the
pipe syntax or raw SQL, compiled and routed across ClickHouse and Tantivy
by internal/querylang. Replaces Phase 0/1's two separate placeholder
endpoints (raw-SQL-only /query, free-text-only /search) — see
/docs/query-language-design.md for the grammar, IR, and routing design,
and /docs/query-language-reference.md for the user-facing syntax.
Why plain REST, not gRPC + REST gateway
CLAUDE.md pins the control plane to "Go, gRPC + REST gateway." This
service is plain net/http instead — a deliberate simplification, not a
change to the pinned stack. Wiring up a .proto service,
google.api.http annotations, and protoc-gen-grpc-gateway codegen for
one endpoint doesn't buy much at this size. api does speak gRPC
internally — to /search — this simplification is about the
public-facing surface only.
Endpoint
POST /query — body {"query": "...", "language": ""}, response
{"columns": [...], "rows": [[...], ...]} or {"error": "..."}.
queryis either pipe syntax (service=api | where status>=500 | stats count by host) or raw SQL (SELECT ...). Auto-detected by whether the query starts withSELECT(case-insensitive).languageoptionally overrides detection:"sql"or"spl". Exists for the rare case a pipe query legitimately starts with the literal word "select" as a bare search term.- Both syntaxes compile to the same
querylang/ir.Planand execute through the same code path — seeinternal/querylang/executorfor the four routing cases (pure ClickHouse; Tantivy prefilter + ClickHouse rows; Tantivy prefilter + ClickHouse aggregation; raw SQL passthrough).
GET /healthz — for docker-compose/k8s liveness checks.
No auth. Not scoped yet — don't expose this beyond a trusted dev/homelab network.
Configuration
Environment variables (see internal/config/config.go):
| Var | Default | Purpose |
|---|---|---|
HTTP_LISTEN_ADDR |
:8080 |
|
CLICKHOUSE_ADDR |
localhost:9000 |
Native protocol port |
CLICKHOUSE_DATABASE / _USERNAME / _PASSWORD |
sentry / default / `` |
|
SEARCH_GRPC_ADDR |
localhost:50052 |
Must match /search's GRPC_LISTEN_ADDR |
QUERY_TIMEOUT_SECONDS |
30 |
Per-request timeout |
CORS_ALLOWED_ORIGIN |
* |
Wide open by default since there's no auth yet; tighten together |
searchclient.Dial connects to /search over plain TCP, no TLS — same
trust boundary as api's existing plain-TCP connection to ClickHouse.
mTLS in this project is specifically the agent↔ingest edge boundary, not
every internal hop.
Building & testing
go build ./...
go vet ./...
go test ./...
# from the repo root, not api/
docker build -f api/Dockerfile -t sentry-api .
Testing notes
internal/queryapi's HTTP handler depends on ClickHouse and /search
only through the narrow interfaces querylang/executor defines
(SQLRunner, SearchClient), so routing, compilation, JSON encoding,
and error-status mapping are all unit-tested against fakes — no live
ClickHouse or /search instance needed, and the real lexer/parser/
planner run unmocked in these tests, only the backends are faked. See
internal/querylang's own package docs for how compilation and
execution are tested independently of each other. executor.ChRunner
(the reflection-based row scanning against ClickHouse's driver.Rows)
and internal/searchclient's actual gRPC dial are not unit-tested — the
former because faking driver.Rows fully would be significant
test-only scaffolding the driver's own docs say isn't meant to be
implemented by adopters; the latter because it's a thin wrapper with
nothing but wiring to test. Both are exercised end-to-end via the
docker-compose flow in /docs/phase-2-runbook.md.