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78 lines
2.0 KiB
78 lines
2.0 KiB
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package gfpool
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import (
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"fmt"
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"os"
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"time"
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"github.com/gogf/gf/v2/errors/gerror"
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)
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// Open creates and returns a file item with given file path, flag and opening permission.
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// It automatically creates an associated file pointer pool internally when it's called first time.
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// It retrieves a file item from the file pointer pool after then.
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func Open(path string, flag int, perm os.FileMode, ttl ...time.Duration) (file *File, err error) {
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var fpTTL time.Duration
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if len(ttl) > 0 {
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fpTTL = ttl[0]
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}
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// DO NOT search the path here wasting performance!
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// Leave following codes just for warning you.
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//
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// path, err = gfile.Search(path)
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// if err != nil {
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// return nil, err
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// }
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pool := pools.GetOrSetFuncLock(
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fmt.Sprintf("%s&%d&%d&%d", path, flag, fpTTL, perm),
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func() interface{} {
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return New(path, flag, perm, fpTTL)
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},
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).(*Pool)
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return pool.File()
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}
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// Get returns a file item with given file path, flag and opening permission.
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// It retrieves a file item from the file pointer pool after then.
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func Get(path string, flag int, perm os.FileMode, ttl ...time.Duration) (file *File) {
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var fpTTL time.Duration
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if len(ttl) > 0 {
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fpTTL = ttl[0]
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}
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f, found := pools.Search(fmt.Sprintf("%s&%d&%d&%d", path, flag, fpTTL, perm))
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if !found {
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return nil
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}
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fp, _ := f.(*Pool).pool.Get()
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return fp.(*File)
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}
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// Stat returns the FileInfo structure describing file.
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func (f *File) Stat() (os.FileInfo, error) {
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if f.stat == nil {
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return nil, gerror.New("file stat is empty")
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}
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return f.stat, nil
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}
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// Close puts the file pointer back to the file pointer pool.
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func (f *File) Close(close ...bool) error {
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if len(close) > 0 && close[0] {
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f.File.Close()
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}
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if f.pid == f.pool.id.Val() {
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return f.pool.pool.Put(f)
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}
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return nil
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}
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