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83 lines
3.2 KiB
Go
83 lines
3.2 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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 proxy
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import (
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"context"
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"fmt"
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"strings"
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"github.com/casbin/casbin/v2/model"
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jsonadapter "github.com/casbin/json-adapter/v2"
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"github.com/milvus-io/milvus/pkg/util/merr"
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)
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// MetaCacheCasbinAdapter is the implementation of `persist.Adapter` with Cache
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// Since the usage shall be read-only, it implements only `LoadPolicy` for now.
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type MetaCacheCasbinAdapter struct {
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cacheSource func() Cache
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}
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func NewMetaCacheCasbinAdapter(cacheSource func() Cache) *MetaCacheCasbinAdapter {
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return &MetaCacheCasbinAdapter{
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cacheSource: cacheSource,
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}
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}
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// LoadPolicy loads all policy rules from the storage.
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// Implementing `persist.Adapter`.
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func (a *MetaCacheCasbinAdapter) LoadPolicy(model model.Model) error {
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cache := a.cacheSource()
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if cache == nil {
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return merr.WrapErrServiceInternal("cache source return nil cache")
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}
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policyInfo := strings.Join(cache.GetPrivilegeInfo(context.Background()), ",")
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policy := fmt.Sprintf("[%s]", policyInfo)
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byteSource := []byte(policy)
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jAdapter := jsonadapter.NewAdapter(&byteSource)
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return jAdapter.LoadPolicy(model)
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}
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// SavePolicy saves all policy rules to the storage.
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// Implementing `persist.Adapter`.
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// MetaCacheCasbinAdapter is read-only, always returns error
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func (a *MetaCacheCasbinAdapter) SavePolicy(model model.Model) error {
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return merr.WrapErrServiceInternal("MetaCacheCasbinAdapter is read-only, but received SavePolicy call")
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}
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// AddPolicy adds a policy rule to the storage.
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// Implementing `persist.Adapter`.
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// MetaCacheCasbinAdapter is read-only, always returns error
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func (a *MetaCacheCasbinAdapter) AddPolicy(sec string, ptype string, rule []string) error {
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return merr.WrapErrServiceInternal("MetaCacheCasbinAdapter is read-only, but received AddPolicy call")
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}
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// RemovePolicy removes a policy rule from the storage.
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// Implementing `persist.Adapter`.
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// MetaCacheCasbinAdapter is read-only, always returns error
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func (a *MetaCacheCasbinAdapter) RemovePolicy(sec string, ptype string, rule []string) error {
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return merr.WrapErrServiceInternal("MetaCacheCasbinAdapter is read-only, but received RemovePolicy call")
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}
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// RemoveFilteredPolicy removes policy rules that match the filter from the storage.
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// This is part of the Auto-Save feature.
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func (a *MetaCacheCasbinAdapter) RemoveFilteredPolicy(sec string, ptype string, fieldIndex int, fieldValues ...string) error {
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return merr.WrapErrServiceInternal("MetaCacheCasbinAdapter is read-only, but received RemoveFilteredPolicy call")
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}
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