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// Copyright 2017 The casbin Authors. All Rights Reserved.
//
// 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 fileadapter
import (
"bufio"
"errors"
"io"
"os"
"strings"
"github.com/casbin/casbin/v2/model"
"github.com/casbin/casbin/v2/persist"
)
// AdapterMock is the file adapter for Casbin.
// It can load policy from file or save policy to file.
type AdapterMock struct {
filePath string
errorValue string
}
// NewAdapterMock is the constructor for AdapterMock.
func NewAdapterMock(filePath string) *AdapterMock {
a := AdapterMock{}
a.filePath = filePath
return &a
}
// LoadPolicy loads all policy rules from the storage.
func (a *AdapterMock) LoadPolicy(model model.Model) error {
err := a.loadPolicyFile(model, persist.LoadPolicyLine)
return err
}
// SavePolicy saves all policy rules to the storage.
func (a *AdapterMock) SavePolicy(model model.Model) error {
return nil
}
func (a *AdapterMock) loadPolicyFile(model model.Model, handler func(string, model.Model) error) error {
f, err := os.Open(a.filePath)
if err != nil {
return err
}
defer f.Close()
buf := bufio.NewReader(f)
for {
line, err := buf.ReadString('\n')
line = strings.TrimSpace(line)
if err2 := handler(line, model); err2 != nil {
return err2
}
if err != nil {
if err == io.EOF {
return nil
}
return err
}
}
}
// SetMockErr sets string to be returned by of the mock during testing.
func (a *AdapterMock) SetMockErr(errorToSet string) {
a.errorValue = errorToSet
}
// GetMockErr returns a mock error or nil.
func (a *AdapterMock) GetMockErr() error {
var returnError error
if a.errorValue != "" {
returnError = errors.New(a.errorValue)
}
return returnError
}
// AddPolicy adds a policy rule to the storage.
func (a *AdapterMock) AddPolicy(sec string, ptype string, rule []string) error {
return a.GetMockErr()
}
// AddPolicies removes policy rules from the storage.
func (a *AdapterMock) AddPolicies(sec string, ptype string, rules [][]string) error {
return a.GetMockErr()
}
// RemovePolicy removes a policy rule from the storage.
func (a *AdapterMock) RemovePolicy(sec string, ptype string, rule []string) error {
return a.GetMockErr()
}
// RemovePolicies removes policy rules from the storage.
func (a *AdapterMock) RemovePolicies(sec string, ptype string, rules [][]string) error {
return a.GetMockErr()
}
// UpdatePolicy removes a policy rule from the storage.
func (a *AdapterMock) UpdatePolicy(sec string, ptype string, oldRule, newPolicy []string) error {
return a.GetMockErr()
}
func (a *AdapterMock) UpdatePolicies(sec string, ptype string, oldRules, newRules [][]string) error {
return a.GetMockErr()
}
// RemoveFilteredPolicy removes policy rules that match the filter from the storage.
func (a *AdapterMock) RemoveFilteredPolicy(sec string, ptype string, fieldIndex int, fieldValues ...string) error {
return a.GetMockErr()
}
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