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flysystem.go
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flysystem.go
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package flysystem
import (
"fmt"
"io"
"net/url"
"sync"
"github.com/zzqqw/gfs"
)
const (
DiskNameLocal = gfs.DiskNameLocal
DiskNameOSS = gfs.DiskNameOSS
DiskNameCOS = gfs.DiskNameCOS
DiskNameBOS = gfs.DiskNameBOS
DiskNameGoogleCloudCloudStorage = gfs.DiskNameGoogleCloudCloudStorage
DiskNameQiNiuKoDo = gfs.DiskNameQiNiuKoDo
)
var (
FileModes = gfs.FileModes
)
type IBFS interface {
// Exists Determine if the file exists
Exists(path string) (bool, error)
// WriteReader write file content and return full path
WriteReader(path string, reader io.Reader) (string, error)
// Write file content and return full path
Write(path string, contents []byte) (string, error)
// WriteStream Resource file write returns full path
WriteStream(path, resource string) (string, error)
// Read Read file
Read(path string) ([]byte, error)
// Delete Deleting files returns the number of deleted files
Delete(path string) (int64, error)
}
type IFS interface {
IBFS
// Size Get File Size
Size(path string) (int64, error)
// Update the file content and return the updated full path
Update(path string, contents []byte) (string, error)
// UpdateStream Return the updated full path based on resource file updates
UpdateStream(path, resource string) (string, error)
// MimeType Get File MimeType
MimeType(path string) (string, error)
// Move move file
Move(source, destination string) (bool, error)
// Copy copy file
Copy(source, destination string) (bool, error)
URL(path string) (*url.URL, error)
}
type IAdapter interface {
IFS
// DiskName Default Disk Name
DiskName() string
GFSAdapter() gfs.IAdapter
}
type Flysystem struct {
disk string
diskAdapters map[string]IAdapter
diskNames []string
l *sync.Mutex
}
func New() *Flysystem {
return &Flysystem{diskAdapters: make(map[string]IAdapter), l: &sync.Mutex{}}
}
func NewAdapters(adapters ...IAdapter) *Flysystem {
f := New()
for _, adapter := range adapters {
f.Extend(adapter)
}
return f
}
// Extend 扩展
func (f *Flysystem) Extend(adapter IAdapter, names ...string) *Flysystem {
f.l.Lock()
defer f.l.Unlock()
name := adapter.DiskName()
if len(names) > 0 {
name = names[0]
}
f.diskAdapters[name] = adapter
f.diskNames = append(f.diskNames, name)
return f
}
// DiskGet 获取注册所有的驱动
func (f *Flysystem) DiskGet() []string {
return f.diskNames
}
// DiskExist 判断驱动是否存在
func (f *Flysystem) DiskExist(disk string) bool {
_, ok := f.diskAdapters[disk]
return ok
}
// Adapter Find Adapter
func (f *Flysystem) Adapter(disk string) (IAdapter, error) {
if f.disk != "" {
f.disk = disk
} else if len(f.diskNames) > 0 {
f.disk = f.diskNames[0]
}
if adapter, ok := f.diskAdapters[f.disk]; ok {
return adapter, nil
}
return nil, fmt.Errorf("unable to find %s disk", f.disk)
}
func (f *Flysystem) GFSAdapter(disk string) (gfs.IAdapter, error) {
adapter, err := f.Adapter(disk)
if err != nil {
return nil, err
}
return adapter.GFSAdapter(), nil
}
func (f *Flysystem) URL(path string) (*url.URL, error) {
adapter, err := f.Adapter("")
if err != nil {
return nil, err
}
return adapter.URL(path)
}
func (f *Flysystem) Exists(path string) (bool, error) {
adapter, err := f.Adapter("")
if err != nil {
return false, err
}
return adapter.Exists(path)
}
func (f *Flysystem) WriteReader(path string, reader io.Reader) (string, error) {
adapter, err := f.Adapter("")
if err != nil {
return "", err
}
return adapter.WriteReader(path, reader)
}
func (f *Flysystem) Write(path string, contents []byte) (string, error) {
adapter, err := f.Adapter("")
if err != nil {
return "", err
}
return adapter.Write(path, contents)
}
func (f *Flysystem) WriteStream(path, resource string) (string, error) {
adapter, err := f.Adapter("")
if err != nil {
return "", err
}
return adapter.WriteStream(path, resource)
}
func (f *Flysystem) Update(path string, contents []byte) (string, error) {
adapter, err := f.Adapter("")
if err != nil {
return "", err
}
return adapter.Update(path, contents)
}
func (f *Flysystem) UpdateStream(path, resource string) (string, error) {
adapter, err := f.Adapter("")
if err != nil {
return "", err
}
return adapter.UpdateStream(path, resource)
}
func (f *Flysystem) Read(path string) ([]byte, error) {
adapter, err := f.Adapter("")
if err != nil {
return nil, err
}
return adapter.Read(path)
}
func (f *Flysystem) Delete(path string) (int64, error) {
adapter, err := f.Adapter("")
if err != nil {
return 0, err
}
return adapter.Delete(path)
}
func (f *Flysystem) MimeType(path string) (string, error) {
adapter, err := f.Adapter("")
if err != nil {
return "", err
}
return adapter.MimeType(path)
}
func (f *Flysystem) Size(path string) (int64, error) {
adapter, err := f.Adapter("")
if err != nil {
return 0, err
}
return adapter.Size(path)
}
func (f *Flysystem) Move(source, destination string) (bool, error) {
adapter, err := f.Adapter("")
if err != nil {
return false, err
}
return adapter.Move(source, destination)
}
func (f *Flysystem) Copy(source, destination string) (bool, error) {
adapter, err := f.Adapter("")
if err != nil {
return false, err
}
return adapter.Copy(source, destination)
}