grafana/scripts/codeowners-manifest/README.md

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Tests: Custom script to run unit tests filtered by code ownership (#111210) * feat(script): generate a source file x teams manifest from CODEOWNERS * feat(script): unit tests + coverage report only for files owned by team * feat(script): calculate CODEOWNERS metadata * refactor(script): export a pure codeowners manifest generation function * refactor(script): export a pure test coverage by team function * refactor(script): generate raw JSONL codeowners data from Node.js script * feat(script): put codeowners manifest all together in one script * refactor(scripts): group consistently with NPM script name * refactor(scripts): deduplicate constants for file paths etc. * refactor(scripts): make console output cute 💅✨ * refactor(tests): make coverage by "owner" directory more human readable * refactor(scripts): use consistent naming "codeowner" instead of "team" * chore(codeowners): mark DataViz as owners of scripts for now * chore(todo): leave a note where coverage metrics should be emitted later * fix(gitignore): ignore root codeowners-manifest directory not scripts/* * refactor(script): rename manifest to generate for clarity * docs(readme): add a brief README describing new scrips * chore(linter): ignore temporary files in prettier, fix whitespace format * refactor(script): simplify Jest config by using team files list directly * refactor(script): simplify script, partition sourceFiles and testFiles * refactor(script): simplify and parallelize manifest write operations * fix(script): handle errors for JSONL line reader * refactor(script): use Map instead of POJOs * fix(script): handle errors when streaming raw JSONL output * fix(script): add error handling, and use promise API for metadata check * fix(reporter): suppress duplicate Jest CLI coverage report output * refactor(script): simplify with fs promises API for consistency * fix(script): error handling for cp spawn-ed process * refactor(script): use Promise API for mkdir + exists * refactor(script): use fs Promise API * refactor(script): use fs Promise API * fix(script): same allow list for sourceFilter and all Jest config rules Co-authored-by: Paul Marbach <paul.marbach@grafana.com> * fix(script): bust cache when new files are created also --------- Co-authored-by: Paul Marbach <paul.marbach@grafana.com>
2025-10-08 05:07:55 +08:00
# Codeowners Manifest Scripts
Scripts for generating and caching CODEOWNERS manifest data.
Each of these scripts can be run individually if needed, but `index.js` is most useful because it combines them all.
## Usage
```bash
# Combined script
node index.js # Generate complete manifest with caching
# Individual scripts
node metadata.js # Generate metadata with hashes
node raw.js # Generate raw audit data
node generate.js # Process raw data into manifest files
```
## Control flow of `index.js`
```mermaid
flowchart TD
A[index.js] --> B[metadata.js: Generate new metadata]
B --> C{Existing metadata exists?}
C -->|No| D[Generate all files]
C -->|Yes| E{Hashes match?}
E -->|No| D
E -->|Yes| F[Skip generation]
D --> G[raw.js: Generate audit data]
G --> H[generate.js: Process into JSON files]
H --> I[Save new metadata]
I --> J[Complete]
F --> J
style F fill:#e1f5fe
style J fill:#e8f5e8
```
## Default output
By default these scripts will write the following files to the `/codeowners-manifest/*` directory.
- `audit-raw.jsonl` - Raw CODEOWNERS audit data in JSONL format _(for fast stream processing)_
- `teams.json` - List of all codeowners _(for validating codeowner names)_
- `teams-by-filename.json` - Files mapped to their respective codeowners
- `filenames-by-team.json` - Codeowners mapped to their respective files
- `metadata.json` - Hashes for cache validation