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feat(db): add golang-migrate runner
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// Package db 提供数据库相关的基础设施工具,包括 golang-migrate 迁移运行器。
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package db
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import (
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"errors"
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"fmt"
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"github.com/golang-migrate/migrate/v4"
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// 注册 postgres 数据库驱动(database://postgres)。
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_ "github.com/golang-migrate/migrate/v4/database/postgres"
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// 注册 file:// 迁移源驱动。
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_ "github.com/golang-migrate/migrate/v4/source/file"
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)
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// Migrate 跑指定路径下的迁移到最新版本。
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// migrationsPath 形如 "file://migrations",dsn 为 postgres 连接串。
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// 当无新迁移可应用时(migrate.ErrNoChange)视为成功,返回 nil。
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func Migrate(dsn, migrationsPath string) error {
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m, err := migrate.New(migrationsPath, dsn)
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if err != nil {
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return fmt.Errorf("init migrate: %w", err)
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}
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defer func() { _, _ = m.Close() }()
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if err := m.Up(); err != nil && !errors.Is(err, migrate.ErrNoChange) {
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return fmt.Errorf("migrate up: %w", err)
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}
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return nil
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}
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