mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-12 08:00:24 +00:00
98 lines
3.2 KiB
Go
98 lines
3.2 KiB
Go
/*
|
|
Copyright 2023 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package cel
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
|
|
)
|
|
|
|
var _ ClaimsMapper = &mapper{}
|
|
var _ UserMapper = &mapper{}
|
|
|
|
// mapper implements the ClaimsMapper and UserMapper interface.
|
|
type mapper struct {
|
|
compilationResults []CompilationResult
|
|
}
|
|
|
|
// CELMapper is a struct that holds the compiled expressions for
|
|
// username, groups, uid, extra, claimValidation and userValidation
|
|
type CELMapper struct {
|
|
Username ClaimsMapper
|
|
Groups ClaimsMapper
|
|
UID ClaimsMapper
|
|
Extra ClaimsMapper
|
|
ClaimValidationRules ClaimsMapper
|
|
UserValidationRules UserMapper
|
|
}
|
|
|
|
// NewClaimsMapper returns a new ClaimsMapper.
|
|
func NewClaimsMapper(compilationResults []CompilationResult) ClaimsMapper {
|
|
return &mapper{
|
|
compilationResults: compilationResults,
|
|
}
|
|
}
|
|
|
|
// NewUserMapper returns a new UserMapper.
|
|
func NewUserMapper(compilationResults []CompilationResult) UserMapper {
|
|
return &mapper{
|
|
compilationResults: compilationResults,
|
|
}
|
|
}
|
|
|
|
// EvalClaimMapping evaluates the given claim mapping expression and returns a EvaluationResult.
|
|
func (m *mapper) EvalClaimMapping(ctx context.Context, claims *unstructured.Unstructured) (EvaluationResult, error) {
|
|
results, err := m.eval(ctx, map[string]interface{}{claimsVarName: claims.Object})
|
|
if err != nil {
|
|
return EvaluationResult{}, err
|
|
}
|
|
if len(results) != 1 {
|
|
return EvaluationResult{}, fmt.Errorf("expected 1 evaluation result, got %d", len(results))
|
|
}
|
|
return results[0], nil
|
|
}
|
|
|
|
// EvalClaimMappings evaluates the given expressions and returns a list of EvaluationResult.
|
|
func (m *mapper) EvalClaimMappings(ctx context.Context, claims *unstructured.Unstructured) ([]EvaluationResult, error) {
|
|
return m.eval(ctx, map[string]interface{}{claimsVarName: claims.Object})
|
|
}
|
|
|
|
// EvalUser evaluates the given user expressions and returns a list of EvaluationResult.
|
|
func (m *mapper) EvalUser(ctx context.Context, userInfo *unstructured.Unstructured) ([]EvaluationResult, error) {
|
|
return m.eval(ctx, map[string]interface{}{userVarName: userInfo.Object})
|
|
}
|
|
|
|
func (m *mapper) eval(ctx context.Context, input map[string]interface{}) ([]EvaluationResult, error) {
|
|
evaluations := make([]EvaluationResult, len(m.compilationResults))
|
|
|
|
for i, compilationResult := range m.compilationResults {
|
|
var evaluation = &evaluations[i]
|
|
evaluation.ExpressionAccessor = compilationResult.ExpressionAccessor
|
|
|
|
evalResult, _, err := compilationResult.Program.ContextEval(ctx, input)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("expression '%s' resulted in error: %w", compilationResult.ExpressionAccessor.GetExpression(), err)
|
|
}
|
|
|
|
evaluation.EvalResult = evalResult
|
|
}
|
|
|
|
return evaluations, nil
|
|
}
|