Rene Nochebuena
d64fd5403d
Introduces code.nochebuena.dev/einherjar/db-mysql — the MySQL database starter for the Einherjar framework. Absorbs the mysql package from micro-lib using the go-sql-driver/mysql driver, replacing fmt.Errorf wrapping with core/xerrors. Interfaces (CT-6: one TypeSpec per file): - Executor — ExecContext, QueryContext, QueryRowContext (database/sql types) - Tx — Executor + Commit(), Rollback() — no ctx; honest database/sql contract - Provider — GetExecutor, Begin, BeginTx, Ping, HandleError - Component — lifecycle.Component + observability.Checkable + Provider + Stats() - UnitOfWork — Do(ctx, fn) Implementation: - New(logger, cfg) Component — pool not created until OnInit - OnInit: sql.Open + SetMaxOpenConns/SetMaxIdleConns/SetConnMaxLifetime/SetConnMaxIdleTime - OnStart: Ping with 5s timeout; logs "mysql: connected" - OnStop: db.Close(); logs "mysql: closing pool" - GetExecutor: returns active Tx from context (ctxTxKey) or *sql.DB; explicit nil return when db uninitialized to avoid typed-nil interface pitfall - Begin/BeginTx: wraps db.BeginTx(*sql.TxOptions); wrapped in xerrors on error - HealthCheck: delegates to Ping; Priority LevelCritical - Stats() sql.DBStats — zero value when pool uninitialized - NewUnitOfWork(logger, provider) UnitOfWork — Begin+inject+commit/rollback; no write mutex (MySQL is a server DB with internal concurrency control) - HandleError: 1062→ErrAlreadyExists, 1216/1217/1451/1452→ErrInvalidInput, sql.ErrNoRows→ErrNotFound, all others→ErrInternal - Driver imported as mysqldrv alias in errors.go to avoid package-name collision; registered via blank import in new.go Config (EINHERJAR_MYSQL_* env vars): Host, Port(3306), User, Password, Name, MaxConns(5), MinConns(2), MaxConnLifetime(1h), MaxConnIdleTime(30m), Charset(utf8mb4), Loc(UTC), ParseTime(true) - Component interface embeds observability.Identifiable; identifiable.go implements ModulePath and ModuleVersion via runtime/debug.ReadBuildInfo() — prints in launcher banner
39 lines
1.5 KiB
Plaintext
39 lines
1.5 KiB
Plaintext
# ── Release workflow helpers ──────────────────────────────────────────────────
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COMMIT.md
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PR.md
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RELEASE.md
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# ── Go build artifacts ────────────────────────────────────────────────────────
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*.exe
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*.exe~
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*.dll
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*.so
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*.dylib
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*.test
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*.out
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/dist/
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/bin/
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# ── Go workspace (local development only) ────────────────────────────────────
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go.work
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go.work.sum
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# ── Dependency vendor directory ───────────────────────────────────────────────
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vendor/
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# ── Coverage output ───────────────────────────────────────────────────────────
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coverage.out
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coverage.html
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*.coverprofile
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# ── OS artifacts ─────────────────────────────────────────────────────────────
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.DS_Store
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Thumbs.db
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# ── Editor artifacts ──────────────────────────────────────────────────────────
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.idea/
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.vscode/
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*.swp
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*.swo
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*~
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