forked from vikunja/vikunja
konrad
d56a611be7
Fix lint Add docs for keyvalue config options Use keyvalue store to cache unsplash photo results Cleanup Use keyvalue store for upload avatar Use keyvalue store for initials avatar Fix initializing metrics Use keyvalue for metrics Add IncryBy and DecrBy methods to increase or decrease a value Fix lint Return custom error if a key does not exist Init keyvalue storage Follow the keyvalue storage setting for things like cache and other Add docs Add configuration of the storage backend Add redis keyvalue storage implementation Add doc comments Add methods to use storage through the package itself Add memory implementation for keyvalue store Co-authored-by: kolaente <k@knt.li> Reviewed-on: vikunja/api#674 Co-Authored-By: konrad <konrad@kola-entertainments.de> Co-Committed-By: konrad <konrad@kola-entertainments.de>
103 lines
2.7 KiB
Go
103 lines
2.7 KiB
Go
// Copyright 2020 Vikunja and contriubtors. All rights reserved.
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//
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// This file is part of Vikunja.
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//
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// Vikunja is free software: you can redistribute it and/or modify
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// it under the terms of the GNU 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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// Vikunja 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Vikunja. If not, see <https://www.gnu.org/licenses/>.
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package memory
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import (
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e "code.vikunja.io/api/pkg/modules/keyvalue/error"
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"sync"
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)
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// Storage is the memory implementation of a storage backend
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type Storage struct {
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store map[string]interface{}
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mutex sync.Mutex
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}
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// NewStorage creates a new memory storage
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func NewStorage() *Storage {
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s := &Storage{}
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s.store = make(map[string]interface{})
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return s
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}
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// Put puts a value into the memory storage
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func (s *Storage) Put(key string, value interface{}) (err error) {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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s.store[key] = value
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return nil
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}
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// Get retrieves a saved value from memory storage
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func (s *Storage) Get(key string) (value interface{}, err error) {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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var exists bool
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value, exists = s.store[key]
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if !exists {
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return nil, &e.ErrValueNotFoundForKey{Key: key}
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}
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return
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}
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// Del removes a saved value from a memory storage
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func (s *Storage) Del(key string) (err error) {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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delete(s.store, key)
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return nil
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}
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// IncrBy increases the value saved at key by the amount provided through update
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// It assumes the value saved for the key either does not exist or has a type of int64
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func (s *Storage) IncrBy(key string, update int64) (err error) {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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v, err := s.Get(key)
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if err != nil && !e.IsErrValueNotFoundForKey(err) {
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return err
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}
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val, is := v.(int64)
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if !is {
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return &e.ErrValueHasWrongType{Key: key, ExpectedValue: "int64"}
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}
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s.store[key] = val + update
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return nil
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}
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// DecrBy decreases the value saved at key by the amount provided through update
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// It assumes the value saved for the key either does not exist or has a type of int64
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func (s *Storage) DecrBy(key string, update int64) (err error) {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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v, err := s.Get(key)
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if err != nil && !e.IsErrValueNotFoundForKey(err) {
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return err
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}
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val, is := v.(int64)
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if !is {
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return &e.ErrValueHasWrongType{Key: key, ExpectedValue: "int64"}
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}
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s.store[key] = val - update
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return nil
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}
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