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78 lines
1.6 KiB
78 lines
1.6 KiB
/*
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* MinIO Cloud Storage, (C) 2018 MinIO, 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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*/
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package policy
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import (
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"encoding/json"
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"fmt"
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)
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// Effect - policy statement effect Allow or Deny.
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type Effect string
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const (
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// Allow - allow effect.
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Allow Effect = "Allow"
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// Deny - deny effect.
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Deny = "Deny"
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)
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// IsAllowed - returns if given check is allowed or not.
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func (effect Effect) IsAllowed(b bool) bool {
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if effect == Allow {
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return b
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}
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return !b
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}
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// IsValid - checks if Effect is valid or not
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func (effect Effect) IsValid() bool {
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switch effect {
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case Allow, Deny:
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return true
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}
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return false
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}
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// MarshalJSON - encodes Effect to JSON data.
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func (effect Effect) MarshalJSON() ([]byte, error) {
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if !effect.IsValid() {
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return nil, fmt.Errorf("invalid effect '%v'", effect)
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}
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return json.Marshal(string(effect))
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}
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// UnmarshalJSON - decodes JSON data to Effect.
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func (effect *Effect) UnmarshalJSON(data []byte) error {
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var s string
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if err := json.Unmarshal(data, &s); err != nil {
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return err
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}
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e := Effect(s)
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if !e.IsValid() {
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return fmt.Errorf("invalid effect '%v'", s)
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}
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*effect = e
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return nil
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}
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