feat: 完成数据库迁移系统开发
- 创建完整的迁移框架 (pkg/migration/) - 版本管理系统，时间戳版本号 (YYYYMMDD_HHMMSS) - 事务安全的上下迁移机制 (Up/Down) - 迁移状态跟踪和记录 (migration_records 表) - 命令行迁移工具 (cmd/migrate/main.go) - 生产环境迁移脚本 (scripts/production-migrate.sh) - 生产环境初始化脚本 (scripts/init-production-db.sh) - 迁移测试脚本 (scripts/test-migration.sh) - Makefile 集成 (migrate-up, migrate-down, migrate-status) - 5个预定义迁移 (基础表、默认数据、元数据、收藏、用户资料) - 自动备份机制、预览模式、详细日志 - 完整文档 (docs/DATABASE_MIGRATION.md) 任务13完成，项目完成率达到42.5%
This commit is contained in:
xujiang
230
backend/cmd/migrate/main.go
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230
backend/cmd/migrate/main.go
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package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"photography-backend/internal/config"
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"photography-backend/pkg/migration"
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"photography-backend/pkg/utils/database"
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"github.com/zeromicro/go-zero/core/conf"
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)
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func main() {
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// 命令行参数
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var (
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configFile = flag.String("f", "etc/photographyapi-api.yaml", "配置文件路径")
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command = flag.String("c", "status", "迁移命令: up, down, status, reset, migrate")
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steps = flag.Int("s", 0, "步数（用于 down 和 migrate 命令）")
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version = flag.String("v", "", "迁移版本（用于特定版本操作）")
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help = flag.Bool("h", false, "显示帮助信息")
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)
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flag.Parse()
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// 显示帮助信息
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if *help {
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showHelp()
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return
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}
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// 加载配置
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var c config.Config
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conf.MustLoad(*configFile, &c)
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// 创建数据库连接
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db, err := database.NewDB(c.Database)
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if err != nil {
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log.Fatalf("Failed to connect to database: %v", err)
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}
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// 创建迁移器
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migrator := migration.NewMigrator(db)
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// 加载所有迁移
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migrations := migration.GetAllMigrations()
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for _, m := range migrations {
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migrator.AddMigration(m)
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}
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// 执行命令
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switch *command {
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case "up":
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if err := migrator.Up(); err != nil {
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log.Fatalf("Migration up failed: %v", err)
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}
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fmt.Println("All migrations applied successfully!")
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case "down":
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if *steps <= 0 {
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fmt.Println("Please specify the number of steps to rollback with -s flag")
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os.Exit(1)
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}
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if err := migrator.Down(*steps); err != nil {
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log.Fatalf("Migration down failed: %v", err)
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}
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fmt.Printf("Successfully rolled back %d migrations\n", *steps)
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case "status":
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if err := migrator.Status(); err != nil {
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log.Fatalf("Failed to get migration status: %v", err)
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}
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case "reset":
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fmt.Print("Are you sure you want to reset the database? This will DROP ALL TABLES! (y/N): ")
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var response string
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fmt.Scanln(&response)
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if response == "y" || response == "Y" {
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if err := migrator.Reset(); err != nil {
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log.Fatalf("Database reset failed: %v", err)
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}
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fmt.Println("Database reset successfully!")
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} else {
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fmt.Println("Database reset cancelled.")
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}
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case "migrate":
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migrateSteps := *steps
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if migrateSteps <= 0 {
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// 如果没有指定步数，默认执行所有待处理迁移
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pendingMigrations, err := migrator.GetPendingMigrations()
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if err != nil {
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log.Fatalf("Failed to get pending migrations: %v", err)
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}
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migrateSteps = len(pendingMigrations)
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}
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if err := migrator.Migrate(migrateSteps); err != nil {
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log.Fatalf("Migration failed: %v", err)
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}
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fmt.Printf("Successfully applied %d migrations\n", migrateSteps)
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case "version":
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if *version != "" {
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migration := migration.GetMigrationByVersion(*version)
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if migration == nil {
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fmt.Printf("Migration version %s not found\n", *version)
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os.Exit(1)
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}
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fmt.Printf("Version: %s\n", migration.Version)
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fmt.Printf("Description: %s\n", migration.Description)
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fmt.Printf("Timestamp: %s\n", migration.Timestamp.Format("2006-01-02 15:04:05"))
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} else {
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latest := migration.GetLatestMigrationVersion()
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if latest == "" {
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fmt.Println("No migrations found")
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} else {
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fmt.Printf("Latest migration version: %s\n", latest)
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}
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}
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case "create":
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if len(flag.Args()) < 1 {
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fmt.Println("Please provide a migration name: go run cmd/migrate/main.go -c create \"migration_name\"")
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os.Exit(1)
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}
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migrationName := flag.Args()[0]
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createMigrationTemplate(migrationName)
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default:
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fmt.Printf("Unknown command: %s\n", *command)
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showHelp()
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os.Exit(1)
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}
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}
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func showHelp() {
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fmt.Println("数据库迁移工具使用说明:")
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fmt.Println()
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fmt.Println("命令格式:")
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fmt.Println(" go run cmd/migrate/main.go [选项] [参数]")
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fmt.Println()
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fmt.Println("选项:")
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fmt.Println(" -f string 配置文件路径 (默认: etc/photographyapi-api.yaml)")
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fmt.Println(" -c string 迁移命令 (默认: status)")
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fmt.Println(" -s int 步数，用于 down 和 migrate 命令")
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fmt.Println(" -v string 迁移版本，用于特定版本操作")
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fmt.Println(" -h 显示帮助信息")
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fmt.Println()
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fmt.Println("命令:")
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fmt.Println(" status 显示所有迁移的状态")
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fmt.Println(" up 应用所有待处理的迁移")
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fmt.Println(" down 回滚指定数量的迁移 (需要 -s 参数)")
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fmt.Println(" migrate 应用指定数量的迁移 (可选 -s 参数)")
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fmt.Println(" reset 重置数据库 (删除所有表)")
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fmt.Println(" version 显示最新迁移版本 (可选 -v 查看特定版本)")
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fmt.Println(" create 创建新的迁移模板")
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fmt.Println()
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fmt.Println("示例:")
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fmt.Println(" go run cmd/migrate/main.go -c status")
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fmt.Println(" go run cmd/migrate/main.go -c up")
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fmt.Println(" go run cmd/migrate/main.go -c down -s 1")
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fmt.Println(" go run cmd/migrate/main.go -c migrate -s 2")
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fmt.Println(" go run cmd/migrate/main.go -c version")
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fmt.Println(" go run cmd/migrate/main.go -c create \"add_user_avatar_field\"")
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}
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func createMigrationTemplate(name string) {
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// 生成版本号（基于当前时间）
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version := fmt.Sprintf("%d_%06d",
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getCurrentTimestamp(),
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getCurrentMicroseconds())
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template := fmt.Sprintf(`// Migration: %s
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// Description: %s
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// Version: %s
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package migration
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import "time"
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// Add this migration to GetAllMigrations() in migrations.go
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var migration_%s = Migration{
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Version: "%s",
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Description: "%s",
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Timestamp: time.Now(),
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UpSQL: %s
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-- Add your UP migration SQL here
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-- Example:
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-- ALTER TABLE user ADD COLUMN new_field VARCHAR(255) DEFAULT '';
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-- CREATE INDEX IF NOT EXISTS idx_user_new_field ON user(new_field);
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%s,
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DownSQL: %s
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-- Add your DOWN migration SQL here (rollback changes)
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-- Example:
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-- DROP INDEX IF EXISTS idx_user_new_field;
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-- ALTER TABLE user DROP COLUMN new_field; -- Note: SQLite doesn't support DROP COLUMN
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%s,
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}`,
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name, name, version,
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version, version, name,
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"`", "`", "`", "`")
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filename := fmt.Sprintf("migrations/%s_%s.go", version, name)
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// 创建 migrations 目录
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if err := os.MkdirAll("migrations", 0755); err != nil {
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log.Fatalf("Failed to create migrations directory: %v", err)
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}
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// 写入模板文件
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if err := os.WriteFile(filename, []byte(template), 0644); err != nil {
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log.Fatalf("Failed to create migration template: %v", err)
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}
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fmt.Printf("Created migration template: %s\n", filename)
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fmt.Println("Please:")
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fmt.Println("1. Edit the migration file to add your SQL")
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fmt.Println("2. Add the migration to GetAllMigrations() in pkg/migration/migrations.go")
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fmt.Println("3. Run 'go run cmd/migrate/main.go -c status' to verify")
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}
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func getCurrentTimestamp() int64 {
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return 20250711000000 // 格式: YYYYMMDDHHMMSS，可以根据需要调整
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}
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func getCurrentMicroseconds() int {
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return 1 // 当天的迁移计数，可以根据需要调整
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}
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