fiber/middleware/cache/manager.go

133 lines
2.9 KiB
Go

package cache
import (
"sync"
"time"
"github.com/gofiber/fiber/v3"
"github.com/gofiber/fiber/v3/internal/memory"
)
// msgp -file="manager.go" -o="manager_msgp.go" -tests=true -unexported
//
//go:generate msgp -o=manager_msgp.go -tests=true -unexported
type item struct {
headers map[string][]byte
body []byte
ctype []byte
cencoding []byte
status int
exp uint64
// used for finding the item in an indexed heap
heapidx int
}
//msgp:ignore manager
type manager struct {
pool sync.Pool
memory *memory.Storage
storage fiber.Storage
}
func newManager(storage fiber.Storage) *manager {
// Create new storage handler
manager := &manager{
pool: sync.Pool{
New: func() any {
return new(item)
},
},
}
if storage != nil {
// Use provided storage if provided
manager.storage = storage
} else {
// Fallback to memory storage
manager.memory = memory.New()
}
return manager
}
// acquire returns an *entry from the sync.Pool
func (m *manager) acquire() *item {
return m.pool.Get().(*item) //nolint:forcetypeassert // We store nothing else in the pool
}
// release and reset *entry to sync.Pool
func (m *manager) release(e *item) {
// don't release item if we using memory storage
if m.storage != nil {
return
}
e.body = nil
e.ctype = nil
e.status = 0
e.exp = 0
e.headers = nil
m.pool.Put(e)
}
// get data from storage or memory
func (m *manager) get(key string) *item {
var it *item
if m.storage != nil {
it = m.acquire()
raw, err := m.storage.Get(key)
if err != nil {
return it
}
if raw != nil {
if _, err := it.UnmarshalMsg(raw); err != nil {
return it
}
}
return it
}
if it, _ = m.memory.Get(key).(*item); it == nil { //nolint:errcheck // We store nothing else in the pool
return nil
}
return it
}
// get raw data from storage or memory
func (m *manager) getRaw(key string) []byte {
var raw []byte
if m.storage != nil {
raw, _ = m.storage.Get(key) //nolint:errcheck // TODO: Handle error here
} else {
raw, _ = m.memory.Get(key).([]byte) //nolint:errcheck // TODO: Handle error here
}
return raw
}
// set data to storage or memory
func (m *manager) set(key string, it *item, exp time.Duration) {
if m.storage != nil {
if raw, err := it.MarshalMsg(nil); err == nil {
_ = m.storage.Set(key, raw, exp) //nolint:errcheck // TODO: Handle error here
}
// we can release data because it's serialized to database
m.release(it)
} else {
m.memory.Set(key, it, exp)
}
}
// set data to storage or memory
func (m *manager) setRaw(key string, raw []byte, exp time.Duration) {
if m.storage != nil {
_ = m.storage.Set(key, raw, exp) //nolint:errcheck // TODO: Handle error here
} else {
m.memory.Set(key, raw, exp)
}
}
// delete data from storage or memory
func (m *manager) del(key string) {
if m.storage != nil {
_ = m.storage.Delete(key) //nolint:errcheck // TODO: Handle error here
} else {
m.memory.Delete(key)
}
}