feat: support mysql as backend storage driver (#2300)

* Rename checkDSN to checkDataDir

* Add option to set DSN and db driver

* Add mysql driver skeleton

* Add mysql container in compose for debug

* Add basic function for mysql driver

* Cleanup go mod with tidy

* Cleanup go.sum with tidy

* Add DeleteUser support for mysql driver

* Fix UpdateUser of mysql driver

* Add DeleteTag support for mysql driver

* Add DeleteResource support for mysql driver

* Add UpdateMemo and DeleteMemo support for mysql driver

* Add MemoRelation support for mysql driver

* Add MemoOrganizer support for mysql driver

* Add Idp support for mysql driver

* Add Storage support for mysql driver

* Add FindMemosVisibilityList support for mysql driver

* Add Vacuum support for mysql driver

* Add Migration support for mysql driver

* Add Migration support for mysql driver

* Fix ListMemo failed with referece

* Change Activity.CreateTs type in MySQL

* Change User.CreateTs type in MySQL

* Fix by golangci-lint

* Change Resource.CreateTs type in MySQL

* Change MigrationHistory.CreateTs type in MySQL

* Change Memo.CreateTs type in MySQL

store/mysql/mysql.go

@@ -0,0 +1,64 @@
+package mysql
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/pkg/errors"
+
+	"github.com/usememos/memos/server/profile"
+	"github.com/usememos/memos/store"
+)
+
+type Driver struct {
+	db      *sql.DB
+	profile *profile.Profile
+}
+
+func NewDriver(profile *profile.Profile) (store.Driver, error) {
+	db, err := sql.Open("mysql", profile.DSN)
+	if err != nil {
+		return nil, err
+	}
+
+	driver := Driver{db: db, profile: profile}
+	return &driver, nil
+}
+
+func (d *Driver) Vacuum(ctx context.Context) error {
+	tx, err := d.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	if err := vacuumMemo(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumResource(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumUserSetting(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumMemoOrganizer(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumMemoRelations(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumTag(ctx, tx); err != nil {
+		// Prevent revive warning.
+		return err
+	}
+
+	return tx.Commit()
+}
+
+func (*Driver) BackupTo(context.Context, string) error {
+	return errors.New("Please use mysqldump to backup")
+}
+
+func (d *Driver) Close() error {
+	return d.db.Close()
+}