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发布v2.2.10版本，更新内容请查看：https://github.com/bufanyun/hotgo/tree/v2.0/docs/guide-zh-CN/addon-version-upgrade.md
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孟帅
290
server/internal/library/cache/file/file.go
vendored
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290
server/internal/library/cache/file/file.go
vendored
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@@ -0,0 +1,290 @@
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package file
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/gogf/gf/v2/container/gvar"
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"github.com/gogf/gf/v2/errors/gerror"
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"github.com/gogf/gf/v2/os/gcache"
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"github.com/gogf/gf/v2/util/gconv"
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"io/ioutil"
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"os"
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"path/filepath"
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"time"
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)
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type (
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// AdapterFile is the gcache adapter implements using file server.
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AdapterFile struct {
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dir string
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}
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fileContent struct {
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Duration int64 `json:"duration"`
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Data interface{} `json:"data,omitempty"`
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}
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)
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const perm = 0o666
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// NewAdapterFile creates and returns a new memory cache object.
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func NewAdapterFile(dir string) gcache.Adapter {
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return &AdapterFile{
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dir: dir,
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}
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}
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func (c *AdapterFile) Set(ctx context.Context, key interface{}, value interface{}, lifeTime time.Duration) (err error) {
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fileKey := gconv.String(key)
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if value == nil || lifeTime < 0 {
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return c.Delete(fileKey)
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}
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return c.Save(fileKey, gconv.String(value), lifeTime)
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}
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func (c *AdapterFile) SetMap(ctx context.Context, data map[interface{}]interface{}, duration time.Duration) (err error) {
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return gerror.New("implement me")
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}
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func (c *AdapterFile) SetIfNotExist(ctx context.Context, key interface{}, value interface{}, duration time.Duration) (ok bool, err error) {
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return false, gerror.New("implement me")
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}
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func (c *AdapterFile) SetIfNotExistFunc(ctx context.Context, key interface{}, f gcache.Func, duration time.Duration) (ok bool, err error) {
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return false, gerror.New("implement me")
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}
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func (c *AdapterFile) SetIfNotExistFuncLock(ctx context.Context, key interface{}, f gcache.Func, duration time.Duration) (ok bool, err error) {
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return false, gerror.New("implement me")
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}
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func (c *AdapterFile) Get(ctx context.Context, key interface{}) (*gvar.Var, error) {
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fetch, err := c.Fetch(gconv.String(key))
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if err != nil {
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return nil, err
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}
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return gvar.New(fetch), nil
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}
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func (c *AdapterFile) GetOrSet(ctx context.Context, key interface{}, value interface{}, duration time.Duration) (result *gvar.Var, err error) {
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return nil, gerror.New("implement me")
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}
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func (c *AdapterFile) GetOrSetFunc(ctx context.Context, key interface{}, f gcache.Func, duration time.Duration) (result *gvar.Var, err error) {
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return nil, gerror.New("implement me")
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}
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func (c *AdapterFile) GetOrSetFuncLock(ctx context.Context, key interface{}, f gcache.Func, duration time.Duration) (result *gvar.Var, err error) {
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return nil, gerror.New("implement me")
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}
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func (c *AdapterFile) Contains(ctx context.Context, key interface{}) (bool, error) {
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return c.Has(gconv.String(key)), nil
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}
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func (c *AdapterFile) Size(ctx context.Context) (size int, err error) {
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return 0, nil
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}
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func (c *AdapterFile) Data(ctx context.Context) (data map[interface{}]interface{}, err error) {
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return nil, gerror.New("implement me")
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}
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func (c *AdapterFile) Keys(ctx context.Context) (keys []interface{}, err error) {
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return nil, gerror.New("implement me")
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}
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func (c *AdapterFile) Values(ctx context.Context) (values []interface{}, err error) {
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return nil, gerror.New("implement me")
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}
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func (c *AdapterFile) Update(ctx context.Context, key interface{}, value interface{}) (oldValue *gvar.Var, exist bool, err error) {
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return nil, false, gerror.New("implement me")
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}
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func (c *AdapterFile) UpdateExpire(ctx context.Context, key interface{}, duration time.Duration) (oldDuration time.Duration, err error) {
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var (
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v *gvar.Var
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oldTTL int64
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fileKey = gconv.String(key)
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)
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// TTL.
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expire, err := c.GetExpire(ctx, fileKey)
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if err != nil {
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return
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}
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oldTTL = int64(expire)
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if oldTTL == -2 {
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// It does not exist.
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oldTTL = -1
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return
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}
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oldDuration = time.Duration(oldTTL) * time.Second
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// DEL.
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if duration < 0 {
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err = c.Delete(fileKey)
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return
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}
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v, err = c.Get(ctx, fileKey)
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if err != nil {
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return
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}
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err = c.Set(ctx, fileKey, v.Val(), duration)
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return
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}
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func (c *AdapterFile) GetExpire(ctx context.Context, key interface{}) (time.Duration, error) {
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content, err := c.read(gconv.String(key))
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if err != nil {
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return -1, nil
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}
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if content.Duration <= time.Now().Unix() {
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return -1, nil
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}
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return time.Duration(time.Now().Unix()-content.Duration) * time.Second, nil
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}
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func (c *AdapterFile) Remove(ctx context.Context, keys ...interface{}) (lastValue *gvar.Var, err error) {
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if len(keys) == 0 {
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return nil, nil
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}
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// Retrieves the last key value.
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if lastValue, err = c.Get(ctx, gconv.String(keys[len(keys)-1])); err != nil {
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return nil, err
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}
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// Deletes all given keys.
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err = c.DeleteMulti(gconv.Strings(keys)...)
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return
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}
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func (c *AdapterFile) Clear(ctx context.Context) error {
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return c.Flush()
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}
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func (c *AdapterFile) Close(ctx context.Context) error {
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return nil
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}
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func (c *AdapterFile) createName(key string) string {
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h := sha256.New()
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_, _ = h.Write([]byte(key))
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hash := hex.EncodeToString(h.Sum(nil))
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return filepath.Join(c.dir, fmt.Sprintf("%s.cache", hash))
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}
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func (c *AdapterFile) read(key string) (*fileContent, error) {
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value, err := ioutil.ReadFile(c.createName(key))
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if err != nil {
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return nil, err
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}
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content := &fileContent{}
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if err := json.Unmarshal(value, content); err != nil {
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return nil, err
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}
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if content.Duration == 0 {
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return content, nil
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}
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if content.Duration <= time.Now().Unix() {
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_ = c.Delete(key)
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return nil, errors.New("cache expired")
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}
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return content, nil
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}
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// Has checks if the cached key exists into the File storage
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func (c *AdapterFile) Has(key string) bool {
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_, err := c.read(key)
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return err == nil
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}
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// Delete the cached key from File storage
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func (c *AdapterFile) Delete(key string) error {
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_, err := os.Stat(c.createName(key))
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if err != nil && os.IsNotExist(err) {
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return nil
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}
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return os.Remove(c.createName(key))
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}
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// DeleteMulti the cached key from File storage
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func (c *AdapterFile) DeleteMulti(keys ...string) (err error) {
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for _, key := range keys {
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if err = c.Delete(key); err != nil {
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return
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}
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}
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return
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}
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// Fetch retrieves the cached value from key of the File storage
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func (c *AdapterFile) Fetch(key string) (interface{}, error) {
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content, err := c.read(key)
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if err != nil {
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return "", err
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}
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return content.Data, nil
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}
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// FetchMulti retrieve multiple cached values from keys of the File storage
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func (c *AdapterFile) FetchMulti(keys []string) map[string]interface{} {
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result := make(map[string]interface{})
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for _, key := range keys {
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if value, err := c.Fetch(key); err == nil {
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result[key] = value
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}
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}
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return result
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}
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// Flush removes all cached keys of the File storage
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func (c *AdapterFile) Flush() error {
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dir, err := os.Open(c.dir)
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if err != nil {
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return err
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}
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defer func() {
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_ = dir.Close()
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}()
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names, _ := dir.Readdirnames(-1)
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for _, name := range names {
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_ = os.Remove(filepath.Join(c.dir, name))
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}
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return nil
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}
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// Save a value in File storage by key
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func (c *AdapterFile) Save(key string, value string, lifeTime time.Duration) error {
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duration := int64(0)
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if lifeTime > 0 {
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duration = time.Now().Unix() + int64(lifeTime.Seconds())
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}
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content := &fileContent{duration, value}
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data, err := json.Marshal(content)
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if err != nil {
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return err
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}
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return ioutil.WriteFile(c.createName(key), data, perm)
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}
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