59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright 2025-present Gustavo "Guz" L. de Mello
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// Copyright 2025-present The Lored.dev Contributors
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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 blogo
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import "errors"
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var (
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ErrMetadataNotFound = errors.New("key in metadata was not found")
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ErrMetadataIncorrectType = errors.New("key in metadata is not of the provided type")
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ErrMetadataImmutable = errors.New("key in metadata cannot be set to another value")
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ErrMetadataNotEmpty = errors.New("key in metadata is not empty")
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)
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type Metadata interface {
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Get(key string) (any, error)
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Set(key string, v any, strict ...bool) error
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Delete(key string, strict ...bool) error
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}
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type MetadataMap map[string]any
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func (m MetadataMap) Get(key string) (any, error) {
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v, ok := m[key]
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if !ok {
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return nil, ErrMetadataNotFound
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}
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return v, nil
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}
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func (m MetadataMap) Set(key string, v any, strict ...bool) error {
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if _, ok := m[key]; ok && len(strict) > 0 && strict[0] {
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return ErrMetadataNotEmpty
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}
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m[key] = v
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return nil
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}
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func (m MetadataMap) Delete(key string, strict ...bool) error {
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if _, ok := m[key]; ok && len(strict) > 0 && strict[0] {
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return ErrMetadataNotEmpty
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}
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delete(m, key)
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return nil
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}
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