64 lines
2.1 KiB
Go
64 lines
2.1 KiB
Go
// Copyright 2024 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package contextopt
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import (
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"github.com/pingcap/tidb/pkg/expression/context"
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"github.com/pingcap/tidb/pkg/parser/auth"
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)
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var _ context.OptionalEvalPropProvider = CurrentUserPropProvider(nil)
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var _ RequireOptionalEvalProps = CurrentUserPropReader{}
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// CurrentUserPropProvider is a provider to get the current user
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type CurrentUserPropProvider func() (*auth.UserIdentity, []*auth.RoleIdentity)
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// Desc returns the description for the property key.
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func (p CurrentUserPropProvider) Desc() *context.OptionalEvalPropDesc {
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return context.OptPropCurrentUser.Desc()
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}
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// CurrentUserPropReader is used by expression to read property context.OptPropCurrentUser
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type CurrentUserPropReader struct{}
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// RequiredOptionalEvalProps implements the RequireOptionalEvalProps interface.
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func (r CurrentUserPropReader) RequiredOptionalEvalProps() context.OptionalEvalPropKeySet {
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return context.OptPropCurrentUser.AsPropKeySet()
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}
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// CurrentUser returns the current user
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func (r CurrentUserPropReader) CurrentUser(ctx context.EvalContext) (*auth.UserIdentity, error) {
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p, err := r.getProvider(ctx)
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if err != nil {
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return nil, err
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}
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user, _ := p()
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return user, nil
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}
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// ActiveRoles returns the active roles
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func (r CurrentUserPropReader) ActiveRoles(ctx context.EvalContext) ([]*auth.RoleIdentity, error) {
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p, err := r.getProvider(ctx)
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if err != nil {
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return nil, err
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}
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_, roles := p()
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return roles, nil
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}
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func (r CurrentUserPropReader) getProvider(ctx context.EvalContext) (CurrentUserPropProvider, error) {
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return getPropProvider[CurrentUserPropProvider](ctx, context.OptPropCurrentUser)
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}
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