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Code Issues Releases Activity

Merge pull request #689 from fuxiaohei/develop

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code style simplify
This commit is contained in:
astaxie 2014-07-11 09:55:56 +08:00
commit dbe75f90d5
1 changed files with 47 additions and 71 deletions
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118
cache/file.go vendored
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@ -60,12 +60,10 @@ func NewFileCache() *FileCache {
// Start and begin gc for file cache.
// the config need to be like {CachePath:"/cache","FileSuffix":".bin","DirectoryLevel":2,"EmbedExpiry":0}
func (this *FileCache) StartAndGC(config string) error {
func (fc *FileCache) StartAndGC(config string) error {
var cfg map[string]string
json.Unmarshal([]byte(config), &cfg)
//fmt.Println(cfg)
//fmt.Println(config)
if _, ok := cfg["CachePath"]; !ok {
cfg["CachePath"] = FileCachePath
}
@ -78,69 +76,53 @@ func (this *FileCache) StartAndGC(config string) error {
if _, ok := cfg["EmbedExpiry"]; !ok {
cfg["EmbedExpiry"] = strconv.FormatInt(FileCacheEmbedExpiry, 10)
}
this.CachePath = cfg["CachePath"]
this.FileSuffix = cfg["FileSuffix"]
this.DirectoryLevel, _ = strconv.Atoi(cfg["DirectoryLevel"])
this.EmbedExpiry, _ = strconv.Atoi(cfg["EmbedExpiry"])
fc.CachePath = cfg["CachePath"]
fc.FileSuffix = cfg["FileSuffix"]
fc.DirectoryLevel, _ = strconv.Atoi(cfg["DirectoryLevel"])
fc.EmbedExpiry, _ = strconv.Atoi(cfg["EmbedExpiry"])
this.Init()
fc.Init()
return nil
}
// Init will make new dir for file cache if not exist.
func (this *FileCache) Init() {
func (fc *FileCache) Init() {
app := filepath.Dir(os.Args[0])
this.CachePath = filepath.Join(app, this.CachePath)
ok, err := exists(this.CachePath)
if err != nil { // print error
//fmt.Println(err)
fc.CachePath = filepath.Join(app, fc.CachePath)
if ok, _ := exists(fc.CachePath); !ok { // todo : error handle
_ = os.MkdirAll(fc.CachePath, os.ModePerm) // todo : error handle
}
if !ok {
if err = os.Mkdir(this.CachePath, os.ModePerm); err != nil {
//fmt.Println(err);
}
}
//fmt.Println(this.getCacheFileName("123456"));
}
// get cached file name. it's md5 encoded.
func (this *FileCache) getCacheFileName(key string) string {
func (fc *FileCache) getCacheFileName(key string) string {
m := md5.New()
io.WriteString(m, key)
keyMd5 := hex.EncodeToString(m.Sum(nil))
cachePath := this.CachePath
//fmt.Println("cachepath : " , cachePath)
//fmt.Println("md5" , keyMd5);
switch this.DirectoryLevel {
cachePath := fc.CachePath
switch fc.DirectoryLevel {
case 2:
cachePath = filepath.Join(cachePath, keyMd5[0:2], keyMd5[2:4])
case 1:
cachePath = filepath.Join(cachePath, keyMd5[0:2])
}
ok, err := exists(cachePath)
if err != nil {
//fmt.Println(err)
if ok, _ := exists(cachePath); !ok { // todo : error handle
_ = os.MkdirAll(cachePath, os.ModePerm) // todo : error handle
}
if !ok {
if err = os.MkdirAll(cachePath, os.ModePerm); err != nil {
//fmt.Println(err);
}
}
return filepath.Join(cachePath, fmt.Sprintf("%s%s", keyMd5, this.FileSuffix))
return filepath.Join(cachePath, fmt.Sprintf("%s%s", keyMd5, fc.FileSuffix))
}
// Get value from file cache.
// if non-exist or expired, return empty string.
func (this *FileCache) Get(key string) interface{} {
filename := this.getCacheFileName(key)
filedata, err := File_get_contents(filename)
//fmt.Println("get length:" , len(filedata));
func (fc *FileCache) Get(key string) interface{} {
fileData, err := File_get_contents(fc.getCacheFileName(key))
if err != nil {
return ""
}
var to FileCacheItem
Gob_decode(filedata, &to)
Gob_decode(fileData, &to)
if to.Expired < time.Now().Unix() {
return ""
}
@ -150,12 +132,10 @@ func (this *FileCache) Get(key string) interface{} {
// Put value into file cache.
// timeout means how long to keep this file, unit of ms.
// if timeout equals FileCacheEmbedExpiry(default is 0), cache this item forever.
func (this *FileCache) Put(key string, val interface{}, timeout int64) error {
func (fc *FileCache) Put(key string, val interface{}, timeout int64) error {
gob.Register(val)
filename := this.getCacheFileName(key)
var item FileCacheItem
item.Data = val
item := FileCacheItem{Data: val}
if timeout == FileCacheEmbedExpiry {
item.Expired = time.Now().Unix() + (86400 * 365 * 10) // ten years
} else {
@ -166,13 +146,12 @@ func (this *FileCache) Put(key string, val interface{}, timeout int64) error {
if err != nil {
return err
}
err = File_put_contents(filename, data)
return err
return File_put_contents(fc.getCacheFileName(key), data)
}
// Delete file cache value.
func (this *FileCache) Delete(key string) error {
filename := this.getCacheFileName(key)
func (fc *FileCache) Delete(key string) error {
filename := fc.getCacheFileName(key)
if ok, _ := exists(filename); ok {
return os.Remove(filename)
}
@ -180,44 +159,41 @@ func (this *FileCache) Delete(key string) error {
}
// Increase cached int value.
// this value is saving forever unless Delete.
func (this *FileCache) Incr(key string) error {
data := this.Get(key)
// fc value is saving forever unless Delete.
func (fc *FileCache) Incr(key string) error {
data := fc.Get(key)
var incr int
//fmt.Println(reflect.TypeOf(data).Name())
if reflect.TypeOf(data).Name() != "int" {
incr = 0
} else {
incr = data.(int) + 1
}
this.Put(key, incr, FileCacheEmbedExpiry)
fc.Put(key, incr, FileCacheEmbedExpiry)
return nil
}
// Decrease cached int value.
func (this *FileCache) Decr(key string) error {
data := this.Get(key)
func (fc *FileCache) Decr(key string) error {
data := fc.Get(key)
var decr int
if reflect.TypeOf(data).Name() != "int" || data.(int)-1 <= 0 {
decr = 0
} else {
decr = data.(int) - 1
}
this.Put(key, decr, FileCacheEmbedExpiry)
fc.Put(key, decr, FileCacheEmbedExpiry)
return nil
}
// Check value is exist.
func (this *FileCache) IsExist(key string) bool {
filename := this.getCacheFileName(key)
ret, _ := exists(filename)
func (fc *FileCache) IsExist(key string) bool {
ret, _ := exists(fc.getCacheFileName(key))
return ret
}
// Clean cached files.
// not implemented.
func (this *FileCache) ClearAll() error {
//this.CachePath
func (fc *FileCache) ClearAll() error {
return nil
}
@ -235,22 +211,22 @@ func exists(path string) (bool, error) {
// Get bytes to file.
// if non-exist, create this file.
func File_get_contents(filename string) ([]byte, error) {
f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE, os.ModePerm)
if err != nil {
return []byte(""), err
func File_get_contents(filename string) (data []byte, e error) {
f, e := os.OpenFile(filename, os.O_RDWR|os.O_CREATE, os.ModePerm)
if e != nil {
return
}
defer f.Close()
stat, err := f.Stat()
if err != nil {
return []byte(""), err
stat, e := f.Stat()
if e != nil {
return
}
data := make([]byte, stat.Size())
result, err := f.Read(data)
if int64(result) == stat.Size() {
return data, err
data = make([]byte, stat.Size())
result, e := f.Read(data)
if e != nil || int64(result) != stat.Size() {
return nil, e
}
return []byte(""), err
return
}
// Put bytes to file.