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-rw-r--r--util/kv.go91
1 files changed, 0 insertions, 91 deletions
diff --git a/util/kv.go b/util/kv.go
deleted file mode 100644
index df61654..0000000
--- a/util/kv.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package util
-
-import (
- "errors"
- "io/ioutil"
- "os"
- "path/filepath"
- "strings"
- "sync"
-)
-
-var (
- errInvalidKey = errors.New("invalid key")
- errNoSuchKey = errors.New("no such key")
-)
-
-type Database struct {
- cache map[string][]byte
- basedir string
- m sync.RWMutex
-}
-
-func NewDatabse(basedir string) (db *Database, err error) {
- err = os.Mkdir(basedir, 0755)
- if err != nil && !os.IsExist(err) {
- return
- }
-
- return &Database{
- cache: make(map[string][]byte),
- basedir: basedir,
- }, nil
-}
-
-func (db *Database) Set(key string, val []byte) (err error) {
- if len(key) < 1 || strings.ContainsRune(key, os.PathSeparator) {
- return errInvalidKey
- }
-
- err = ioutil.WriteFile(filepath.Join(db.basedir, key), val, 0644)
- if err != nil {
- return
- }
-
- db.m.Lock()
- db.cache[key] = val
- db.m.Unlock()
-
- return
-}
-
-func (db *Database) Get(key string) (val []byte, err error) {
- if len(key) < 1 || strings.ContainsRune(key, os.PathSeparator) {
- return nil, errInvalidKey
- }
-
- db.m.RLock()
- data, ok := db.cache[key]
- db.m.RUnlock()
-
- if !ok {
- data, err = ioutil.ReadFile(filepath.Join(db.basedir, key))
- if err != nil {
- err = errNoSuchKey
- return nil, err
- }
-
- db.m.Lock()
- db.cache[key] = data
- db.m.Unlock()
- }
-
- val = make([]byte, len(data))
- copy(val, data)
-
- return
-}
-
-func (db *Database) Remove(key string) {
- if len(key) < 1 || strings.ContainsRune(key, os.PathSeparator) {
- return
- }
-
- os.Remove(filepath.Join(db.basedir, key))
-
- db.m.Lock()
- delete(db.cache, key)
- db.m.Unlock()
-
- return
-}