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package cache |
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import ( |
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"fmt" |
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"github.com/memnix/memnixrest/pkg/models" |
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"github.com/robfig/cron/v3" |
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"sync" |
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) |
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type Cache struct { |
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// Cache map |
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c map[uint]cacheItem |
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mu sync.RWMutex |
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cron *cron.Cron |
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} |
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type cacheItem struct { |
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Object map[uint]models.MemDate |
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} |
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func (c *Cache) Flush() { |
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c.mu.Lock() |
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defer c.mu.Unlock() |
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c.c = make(map[uint]cacheItem) |
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} |
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func (c *Cache) Set(key uint, value map[uint]models.MemDate) { |
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c.mu.Lock() |
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defer c.mu.Unlock() |
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c.c[key] = cacheItem{ |
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Object: value, |
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} |
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} |
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func (c *Cache) SetSlice(key uint, value []models.MemDate) { |
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c.mu.Lock() |
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defer c.mu.Unlock() |
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c.c[key] = cacheItem{ |
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Object: make(map[uint]models.MemDate, len(value)), |
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} |
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for _, v := range value { |
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c.c[key].Object[v.ID] = v |
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} |
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} |
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func (c *Cache) AppendSlice(key uint, value []models.MemDate) { |
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c.mu.Lock() |
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defer c.mu.Unlock() |
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_, found := c.c[key] |
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if !found { |
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c.c[key] = cacheItem{ |
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Object: make(map[uint]models.MemDate, len(value)), |
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} |
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} |
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for _, v := range value { |
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c.c[key].Object[v.ID] = v |
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} |
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} |
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// Items in cache |
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func (c *Cache) Items(key uint) []models.MemDate { |
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c.mu.RLock() |
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defer c.mu.RUnlock() |
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item, found := c.c[key] |
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if !found { |
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return nil |
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} |
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memDates := make([]models.MemDate, 0, item.Size()) |
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for _, v := range item.Object { |
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memDates = append(memDates, v) |
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} |
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return memDates |
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} |
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func (c *Cache) Replace(key uint, item models.MemDate) { |
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c.mu.Lock() |
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defer c.mu.Unlock() |
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_, found := c.c[key] |
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if !found { |
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return |
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} |
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c.c[key].Object[item.ID] = item |
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} |
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func (c *Cache) Exists(key uint) bool { |
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c.mu.RLock() |
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defer c.mu.RUnlock() |
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_, found := c.c[key] |
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return found |
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} |
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func (c *Cache) Get(key uint) (map[uint]models.MemDate, error) { |
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c.mu.RLock() |
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defer c.mu.RUnlock() |
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item, found := c.c[key] |
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if !found { |
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return nil, fmt.Errorf("key not found") |
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} |
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return item.Object, nil |
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} |
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func (c *Cache) Delete(key uint) error { |
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c.mu.Lock() |
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defer c.mu.Unlock() |
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_, found := c.c[key] |
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if !found { |
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return fmt.Errorf("key not found") |
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} |
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delete(c.c, key) |
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return nil |
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} |
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func (c *Cache) Size() int { |
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return len(c.c) |
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} |
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func (cacheItem *cacheItem) Size() int { |
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return len(cacheItem.Object) |
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} |
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func (c *Cache) DeleteItem(key uint, item uint) error { |
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c.mu.Lock() |
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defer c.mu.Unlock() |
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_, found := c.c[key] |
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if !found { |
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return fmt.Errorf("key not found") |
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} |
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_, found = c.c[key].Object[item] |
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if !found { |
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return fmt.Errorf("item not found") |
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} |
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delete(c.c[key].Object, item) |
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return nil |
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} |
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func runCron(c *Cache) { |
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_, _ = c.cron.AddFunc("@daily", func() { |
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c.Flush() |
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}) |
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c.cron.Start() |
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} |
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func NewCache() *Cache { |
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cache := &Cache{ |
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c: make(map[uint]cacheItem), |
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cron: cron.New(), |
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} |
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runCron(cache) |
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return cache |
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} |
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memnix /
memnix-rest
