64 lines
2.0 KiB
Go
64 lines
2.0 KiB
Go
// This file is part of the happyDomain (R) project.
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// Copyright (c) 2020-2024 happyDomain
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// Authors: Pierre-Olivier Mercier, et al.
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//
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// This program is offered under a commercial and under the AGPL license.
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// For commercial licensing, contact us at <contact@happydomain.org>.
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//
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// For AGPL licensing:
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package storage
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import (
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"fmt"
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)
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// StorageEngine defines an interface that handle configuration throught custom
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// flag.
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type StorageEngine string
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func (i *StorageEngine) String() string {
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return string(*i)
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}
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func (i *StorageEngine) Set(value string) (err error) {
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se := StorageEngine(value)
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if _, ok := StorageEngines[se]; !ok {
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return fmt.Errorf("Unexistant storage engine: please select one between: %v", GetStorageEngines())
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}
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*i = se
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return nil
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}
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// MainStore is the singleton holding the database connection.
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var MainStore Storage
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// StorageInstanciation is a function that a Storage implementation
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// has to expose in order to be usable in configuration.
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type StorageInstanciation func() (Storage, error)
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// StorageEngines lists all Storage implementations declared, with a
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// way to instanciate automatically each.
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var StorageEngines = map[StorageEngine]StorageInstanciation{}
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// GetStorageEngines returns all declared Storage implementation.
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func GetStorageEngines() (se []string) {
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for k := range StorageEngines {
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se = append(se, string(k))
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}
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return
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}
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