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Lei, HUANG
25909bd1aa
* fix(mito): notify bulk writes on WAL error Signed-off-by: Lei, HUANG <ratuthomm@gmail.com> * fix(mito): move write ctx tests after items Signed-off-by: Lei, HUANG <ratuthomm@gmail.com> * docs: mention PR template in agent guide Signed-off-by: Lei, HUANG <ratuthomm@gmail.com> --------- Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
98 lines
4.5 KiB
Markdown
98 lines
4.5 KiB
Markdown
# AGENTS.md
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Guidance for coding agents (Claude Code, Codex, ...) and contributors working in
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this repository. `CLAUDE.md` is a symlink to this file. If `.local/AGENTS.md` or
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`.local/CLAUDE.md` is present, you **MUST** read it as well — it holds personal
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or machine-local overrides (gitignored, not shared). To record a personal or
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machine-local override, write it to `.local/AGENTS.md` (create `.local/` and the
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file if absent), not to this shared file.
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GreptimeDB is an open-source, cloud-native observability database for unified
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collection and analysis of metrics, logs, and traces. It is written in Rust and
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provides sub-second querying at PB scale with high cost efficiency.
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## Core commands
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| Task | Command |
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| --- | --- |
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| Build (debug) | `make build` |
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| Build (release) | `make build RELEASE=true` |
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| Run standalone | `cargo run -- standalone start` |
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| Test | `cargo nextest run` (preferred over `cargo test`) |
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| SQL tests | `cargo sqlness bare` (single case: `cargo sqlness bare -t <name>`) |
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| Format | `make fmt` (and `make fmt-toml` for TOML) |
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| Lint | `make clippy` (= `cargo clippy --workspace --all-targets --all-features -- -D warnings`) |
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| Type check | `make check` |
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Toolchain: Rust nightly, Protobuf compiler (>= 3.15), C/C++ build essentials.
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Install the test runner with `cargo install cargo-nextest --locked`.
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## Repo map
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GreptimeDB is a Cargo workspace rooted at the repository; most crates live under
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`src/` (plus `tests-fuzz`, `tests-integration`, `tests/runner`). Key areas:
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- **Frontend / protocol**: `src/frontend/` (request orchestration), `src/servers/`
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(wire protocols), `src/sql/` (SQL parsing)
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- **Storage engines**: `src/mito2/` (main time-series engine), `src/metric-engine/`
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(metrics), `src/file-engine/`
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- **Coordination**: `src/meta-srv/` (metadata & cluster control), `src/meta-client/`
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- **Execution / statements**: `src/operator/` (DDL/DML, request conversion, procedures)
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- **Stream / transform**: `src/flow/` (continuous aggregation), `src/pipeline/`
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- **Query / index**: `src/query/`, `src/promql/`, `src/index/`
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- **Shared**: `src/common/`, `src/datatypes/`, `src/store-api/` (engine contract),
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`src/catalog/`, `src/table/`
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Hot crates carry their own `AGENTS.md` with a module map, read/write paths,
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change-coupling points, and gotchas:
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- [`src/mito2/AGENTS.md`](src/mito2/AGENTS.md)
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- [`src/metric-engine/AGENTS.md`](src/metric-engine/AGENTS.md)
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- [`src/flow/AGENTS.md`](src/flow/AGENTS.md)
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- [`src/frontend/AGENTS.md`](src/frontend/AGENTS.md)
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- [`src/meta-srv/AGENTS.md`](src/meta-srv/AGENTS.md)
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## Read before changing code
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- [`.agents/architecture-invariants.md`](.agents/architecture-invariants.md) —
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repo-wide rules that are easy to violate and expensive to get wrong (persisted/
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wire format compatibility, crate layering, async runtimes, error handling,
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feature gating, the DataFusion fork).
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- [`.agents/generated-files.md`](.agents/generated-files.md) — tool-generated
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artifacts that must not be hand-edited (sqlness `.result`, `config/config.md`,
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Grafana dashboards, proto).
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- [`docs/style-guide.md`](docs/style-guide.md) — code style.
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- [`CONTRIBUTING.md`](CONTRIBUTING.md) — contribution flow and CLA.
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## High-signal entry points
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- Main binary: `src/cmd/src/bin/greptime.rs`
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- Configuration: `src/common/config/`, example TOMLs in `config/`
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- Error handling: `src/common/error/` (`ErrorExt`, `StatusCode`)
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- Protocol implementations: `src/servers/src/`
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## Before opening a PR
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1. `make fmt`
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2. `make clippy`
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3. `make test` (or `cargo nextest run`)
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4. `make check-udeps` (run `make fix-udeps` if it reports unused dependencies).
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5. If you added or changed a public configuration option, update the applicable
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example TOMLs, configuration-loading and serialized-config snapshot tests,
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and related user-facing documentation. Run `make config-docs` (needs Docker)
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and commit the regenerated `config/config.md`.
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6. If you changed a persisted or wire format, add a compatibility test case (see
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`.agents/architecture-invariants.md`).
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7. Use a conventional-commit title, sign off commits (`git commit -s`), and sign
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the CLA.
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8. When creating or updating a pull request, follow
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[`.github/pull_request_template.md`](.github/pull_request_template.md): include
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the CLA statement, fill the change-intention section with enough detail, and
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update checklist items accurately.
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## More
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- Agent skills and resources: [`.agents/`](.agents/) (see [`.agents/README.md`](.agents/README.md))
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- Architecture decisions: [`docs/rfcs/`](docs/rfcs/)
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- How-to guides: [`docs/how-to/`](docs/how-to/)
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