From ba0713151c69b83b00795a686422101b7ba7bb31 Mon Sep 17 00:00:00 2001 From: Masahiko AMANO Date: Fri, 3 Apr 2026 18:57:17 +0300 Subject: [PATCH] feat: config, migrations embed, and server entrypoint MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - internal/config: typed Config struct loaded from env vars via godotenv; all fields from docs (listen addr, JWT, DB, storage, thumbs, import) - migrations/embed.go: embed FS so goose SQL files are baked into the binary - cmd/server/main.go: load config → connect pgxpool → goose migrations (embedded) → Gin server with GET /health returning 200 OK - .env.example: documents all required and optional env vars - go.mod: bump to Go 1.26, add gin/pgx/goose/godotenv as direct deps Co-Authored-By: Claude Sonnet 4.6 --- .env.example | 36 +++++++++ backend/cmd/server/main.go | 66 +++++++++++++++ backend/go.mod | 50 +++++++++++- backend/go.sum | 130 ++++++++++++++++++++++++++++++ backend/internal/config/config.go | 107 ++++++++++++++++++++++++ backend/migrations/embed.go | 8 ++ 6 files changed, 395 insertions(+), 2 deletions(-) create mode 100644 .env.example create mode 100644 backend/cmd/server/main.go create mode 100644 backend/internal/config/config.go create mode 100644 backend/migrations/embed.go diff --git a/.env.example b/.env.example new file mode 100644 index 0000000..da6485b --- /dev/null +++ b/.env.example @@ -0,0 +1,36 @@ +# ============================================================================= +# Tanabata File Manager — environment variables +# Copy to .env and fill in the values. +# ============================================================================= + +# --------------------------------------------------------------------------- +# Server +# --------------------------------------------------------------------------- +LISTEN_ADDR=:8080 +JWT_SECRET=change-me-to-a-random-32-byte-secret +JWT_ACCESS_TTL=15m +JWT_REFRESH_TTL=720h + +# --------------------------------------------------------------------------- +# Database +# --------------------------------------------------------------------------- +DATABASE_URL=postgres://tanabata:password@localhost:5432/tanabata?sslmode=disable + +# --------------------------------------------------------------------------- +# Storage +# --------------------------------------------------------------------------- +FILES_PATH=/data/files +THUMBS_CACHE_PATH=/data/thumbs + +# --------------------------------------------------------------------------- +# Thumbnails +# --------------------------------------------------------------------------- +THUMB_WIDTH=160 +THUMB_HEIGHT=160 +PREVIEW_WIDTH=1920 +PREVIEW_HEIGHT=1080 + +# --------------------------------------------------------------------------- +# Import +# --------------------------------------------------------------------------- +IMPORT_PATH=/data/import diff --git a/backend/cmd/server/main.go b/backend/cmd/server/main.go new file mode 100644 index 0000000..f48b5c9 --- /dev/null +++ b/backend/cmd/server/main.go @@ -0,0 +1,66 @@ +package main + +import ( + "context" + "log/slog" + "net/http" + "os" + + "github.com/gin-gonic/gin" + "github.com/jackc/pgx/v5/pgxpool" + "github.com/jackc/pgx/v5/stdlib" + "github.com/pressly/goose/v3" + + "tanabata/backend/internal/config" + "tanabata/backend/migrations" +) + +func main() { + cfg, err := config.Load() + if err != nil { + slog.Error("failed to load config", "err", err) + os.Exit(1) + } + + pool, err := pgxpool.New(context.Background(), cfg.DatabaseURL) + if err != nil { + slog.Error("failed to connect to database", "err", err) + os.Exit(1) + } + defer pool.Close() + + if err := pool.Ping(context.Background()); err != nil { + slog.Error("database ping failed", "err", err) + os.Exit(1) + } + slog.Info("database connected") + + // Run migrations using the embedded FS. + // stdlib.OpenDBFromPool wraps the pool in a *sql.DB without closing + // the pool when the sql.DB is closed. + migDB := stdlib.OpenDBFromPool(pool) + goose.SetBaseFS(migrations.FS) + if err := goose.SetDialect("postgres"); err != nil { + slog.Error("goose dialect error", "err", err) + os.Exit(1) + } + if err := goose.Up(migDB, "."); err != nil { + slog.Error("migrations failed", "err", err) + os.Exit(1) + } + migDB.Close() + slog.Info("migrations applied") + + r := gin.New() + r.Use(gin.Recovery()) + + r.GET("/health", func(c *gin.Context) { + c.Status(http.StatusOK) + }) + + slog.Info("starting server", "addr", cfg.ListenAddr) + if err := r.Run(cfg.ListenAddr); err != nil { + slog.Error("server error", "err", err) + os.Exit(1) + } +} diff --git a/backend/go.mod b/backend/go.mod index 21bf38a..2f8a0dc 100644 --- a/backend/go.mod +++ b/backend/go.mod @@ -1,5 +1,51 @@ module tanabata/backend -go 1.21 +go 1.26 -require github.com/google/uuid v1.6.0 +toolchain go1.26.1 + +require ( + github.com/gin-gonic/gin v1.9.1 + github.com/google/uuid v1.6.0 + github.com/jackc/pgx/v5 v5.5.5 + github.com/joho/godotenv v1.5.1 + github.com/pressly/goose/v3 v3.21.1 +) + +require ( + github.com/bytedance/gopkg v0.1.3 // indirect + github.com/bytedance/sonic v1.15.0 // indirect + github.com/bytedance/sonic/loader v0.5.0 // indirect + github.com/cloudwego/base64x v0.1.6 // indirect + github.com/gabriel-vasile/mimetype v1.4.12 // indirect + github.com/gin-contrib/sse v0.1.0 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/go-playground/validator/v10 v10.22.0 // indirect + github.com/goccy/go-json v0.10.5 // indirect + github.com/jackc/pgpassfile v1.0.0 // indirect + github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect + github.com/jackc/puddle/v2 v2.2.1 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/cpuid/v2 v2.2.9 // indirect + github.com/kr/text v0.2.0 // indirect + github.com/leodido/go-urn v1.4.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/mfridman/interpolate v0.0.2 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.2.4 // indirect + github.com/rogpeppe/go-internal v1.14.1 // indirect + github.com/sethvargo/go-retry v0.3.0 // indirect + github.com/twitchyliquid64/golang-asm v0.15.1 // indirect + github.com/ugorji/go/codec v1.3.1 // indirect + go.uber.org/multierr v1.11.0 // indirect + golang.org/x/arch v0.22.0 // indirect + golang.org/x/crypto v0.39.0 // indirect + golang.org/x/net v0.33.0 // indirect + golang.org/x/sync v0.19.0 // indirect + golang.org/x/sys v0.41.0 // indirect + golang.org/x/text v0.34.0 // indirect + google.golang.org/protobuf v1.36.11 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/backend/go.sum b/backend/go.sum index 7790d7c..56283a8 100644 --- a/backend/go.sum +++ b/backend/go.sum @@ -1,2 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h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM= diff --git a/backend/internal/config/config.go b/backend/internal/config/config.go new file mode 100644 index 0000000..944720a --- /dev/null +++ b/backend/internal/config/config.go @@ -0,0 +1,107 @@ +package config + +import ( + "errors" + "fmt" + "os" + "strconv" + "time" + + "github.com/joho/godotenv" +) + +// Config holds all application configuration loaded from environment variables. +type Config struct { + // Server + ListenAddr string + JWTSecret string + JWTAccessTTL time.Duration + JWTRefreshTTL time.Duration + + // Database + DatabaseURL string + + // Storage + FilesPath string + ThumbsCachePath string + + // Thumbnails + ThumbWidth int + ThumbHeight int + PreviewWidth int + PreviewHeight int + + // Import + ImportPath string +} + +// Load reads a .env file (if present) then loads all configuration from +// environment variables. Returns an error listing every missing or invalid var. +func Load() (*Config, error) { + // Non-fatal: .env may not exist in production. + _ = godotenv.Load() + + var errs []error + + requireStr := func(key string) string { + v := os.Getenv(key) + if v == "" { + errs = append(errs, fmt.Errorf("%s is required", key)) + } + return v + } + + defaultStr := func(key, def string) string { + if v := os.Getenv(key); v != "" { + return v + } + return def + } + + parseDuration := func(key, def string) time.Duration { + raw := defaultStr(key, def) + d, err := time.ParseDuration(raw) + if err != nil { + errs = append(errs, fmt.Errorf("%s: invalid duration %q: %w", key, raw, err)) + return 0 + } + return d + } + + parseInt := func(key string, def int) int { + raw := os.Getenv(key) + if raw == "" { + return def + } + n, err := strconv.Atoi(raw) + if err != nil { + errs = append(errs, fmt.Errorf("%s: invalid integer %q: %w", key, raw, err)) + return def + } + return n + } + + cfg := &Config{ + ListenAddr: defaultStr("LISTEN_ADDR", ":8080"), + JWTSecret: requireStr("JWT_SECRET"), + JWTAccessTTL: parseDuration("JWT_ACCESS_TTL", "15m"), + JWTRefreshTTL: parseDuration("JWT_REFRESH_TTL", "720h"), + + DatabaseURL: requireStr("DATABASE_URL"), + + FilesPath: requireStr("FILES_PATH"), + ThumbsCachePath: requireStr("THUMBS_CACHE_PATH"), + + ThumbWidth: parseInt("THUMB_WIDTH", 160), + ThumbHeight: parseInt("THUMB_HEIGHT", 160), + PreviewWidth: parseInt("PREVIEW_WIDTH", 1920), + PreviewHeight: parseInt("PREVIEW_HEIGHT", 1080), + + ImportPath: requireStr("IMPORT_PATH"), + } + + if len(errs) > 0 { + return nil, errors.Join(errs...) + } + return cfg, nil +} diff --git a/backend/migrations/embed.go b/backend/migrations/embed.go new file mode 100644 index 0000000..1104103 --- /dev/null +++ b/backend/migrations/embed.go @@ -0,0 +1,8 @@ +package migrations + +import "embed" + +// FS holds all goose migration SQL files, embedded at build time. +// +//go:embed *.sql +var FS embed.FS