chore: sqlstore cleanup (#60415)

* chore: remove unused test helper from sqlstore

TimeNow() is no longer used in any tests in this package.

* chore: move sqlstore.SQLBuilder to the infra/db package

This required some minor refactoring; we need to be a little more explicit about passing around the dialect and engine. On the other hand, that's a few fewer uses of the `dialect` global constant!

* chore: move UserDeletions into the only package using it

* cleanup around moving sqlbuilder

* remove dialect and sqlog global vars

* rename userDeletions to serviceAccountDeletions

pkg/infra/db/sqlbuilder.go

@@ -0,0 +1,64 @@
+package db
+
+import (
+	"bytes"
+
+	"github.com/grafana/grafana/pkg/models"
+	ac "github.com/grafana/grafana/pkg/services/accesscontrol"
+	"github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+	"github.com/grafana/grafana/pkg/services/sqlstore/permissions"
+	"github.com/grafana/grafana/pkg/services/user"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+func NewSqlBuilder(cfg *setting.Cfg, dialect migrator.Dialect) SQLBuilder {
+	return SQLBuilder{cfg: cfg, dialect: dialect}
+}
+
+type SQLBuilder struct {
+	cfg     *setting.Cfg
+	sql     bytes.Buffer
+	params  []interface{}
+	dialect migrator.Dialect
+}
+
+func (sb *SQLBuilder) Write(sql string, params ...interface{}) {
+	sb.sql.WriteString(sql)
+
+	if len(params) > 0 {
+		sb.params = append(sb.params, params...)
+	}
+}
+
+func (sb *SQLBuilder) GetSQLString() string {
+	return sb.sql.String()
+}
+
+func (sb *SQLBuilder) GetParams() []interface{} {
+	return sb.params
+}
+
+func (sb *SQLBuilder) AddParams(params ...interface{}) {
+	sb.params = append(sb.params, params...)
+}
+
+func (sb *SQLBuilder) WriteDashboardPermissionFilter(user *user.SignedInUser, permission models.PermissionType) {
+	var (
+		sql    string
+		params []interface{}
+	)
+	if !ac.IsDisabled(sb.cfg) {
+		sql, params = permissions.NewAccessControlDashboardPermissionFilter(user, permission, "").Where()
+	} else {
+		sql, params = permissions.DashboardPermissionFilter{
+			OrgRole:         user.OrgRole,
+			Dialect:         sb.dialect,
+			UserId:          user.UserID,
+			OrgId:           user.OrgID,
+			PermissionLevel: permission,
+		}.Where()
+	}
+
+	sb.sql.WriteString(" AND " + sql)
+	sb.params = append(sb.params, params...)
+}