gorush/storage/leveldb/leveldb.go

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package leveldb
import (
"fmt"
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"strconv"
"sync"
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"github.com/appleboy/gorush/config"
"github.com/syndtr/goleveldb/leveldb"
)
func (s *Storage) setLevelDB(key string, count int64) {
value := fmt.Sprintf("%d", count)
_ = s.db.Put([]byte(key), []byte(value), nil)
}
func (s *Storage) getLevelDB(key string) int64 {
data, _ := s.db.Get([]byte(key), nil)
count, _ := strconv.ParseInt(string(data), 10, 64)
return count
}
// New func implements the storage interface for gorush (https://github.com/appleboy/gorush)
func New(config *config.ConfYaml) *Storage {
return &Storage{
config: config,
}
}
// Storage is interface structure
type Storage struct {
config *config.ConfYaml
db *leveldb.DB
lock sync.RWMutex
}
func (s *Storage) Add(key string, count int64) {
s.lock.Lock()
defer s.lock.Unlock()
s.setLevelDB(key, s.getLevelDB(key)+count)
}
func (s *Storage) Set(key string, count int64) {
s.lock.Lock()
defer s.lock.Unlock()
s.setLevelDB(key, count)
}
func (s *Storage) Get(key string) int64 {
s.lock.RLock()
defer s.lock.RUnlock()
return s.getLevelDB(key)
}
// Init client storage.
func (s *Storage) Init() error {
var err error
s.db, err = leveldb.OpenFile(s.config.Stat.LevelDB.Path, nil)
return err
}
// Close the storage connection
func (s *Storage) Close() error {
if s.db == nil {
return nil
}
return s.db.Close()
}