mirror of https://github.com/gofiber/fiber.git
94 lines
1.9 KiB
Go
94 lines
1.9 KiB
Go
package limiter
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import (
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"sync"
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"time"
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"github.com/gofiber/fiber/v3"
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"github.com/gofiber/fiber/v3/internal/memory"
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)
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// msgp -file="manager.go" -o="manager_msgp.go" -tests=false -unexported
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//
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//go:generate msgp -o=manager_msgp.go -tests=false -unexported
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type item struct {
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currHits int
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prevHits int
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exp uint64
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}
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//msgp:ignore manager
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type manager struct {
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pool sync.Pool
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memory *memory.Storage
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storage fiber.Storage
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}
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func newManager(storage fiber.Storage) *manager {
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// Create new storage handler
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manager := &manager{
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pool: sync.Pool{
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New: func() any {
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return new(item)
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},
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},
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}
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if storage != nil {
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// Use provided storage if provided
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manager.storage = storage
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} else {
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// Fallback too memory storage
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manager.memory = memory.New()
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}
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return manager
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}
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// acquire returns an *entry from the sync.Pool
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func (m *manager) acquire() *item {
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return m.pool.Get().(*item) //nolint:forcetypeassert // We store nothing else in the pool
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}
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// release and reset *entry to sync.Pool
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func (m *manager) release(e *item) {
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e.prevHits = 0
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e.currHits = 0
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e.exp = 0
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m.pool.Put(e)
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}
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// get data from storage or memory
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func (m *manager) get(key string) *item {
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var it *item
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if m.storage != nil {
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it = m.acquire()
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raw, err := m.storage.Get(key)
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if err != nil {
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return it
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}
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if raw != nil {
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if _, err := it.UnmarshalMsg(raw); err != nil {
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return it
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}
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}
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return it
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}
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if it, _ = m.memory.Get(key).(*item); it == nil { //nolint:errcheck // We store nothing else in the pool
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it = m.acquire()
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return it
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}
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return it
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}
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// set data to storage or memory
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func (m *manager) set(key string, it *item, exp time.Duration) {
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if m.storage != nil {
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if raw, err := it.MarshalMsg(nil); err == nil {
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_ = m.storage.Set(key, raw, exp) //nolint:errcheck // TODO: Handle error here
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}
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// we can release data because it's serialized to database
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m.release(it)
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} else {
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m.memory.Set(key, it, exp)
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}
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}
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