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filer.go
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filer.go
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package goseaweedfs
import (
"encoding/json"
"errors"
"io"
"io/ioutil"
"net/http"
"net/url"
"strings"
)
// Filer client
type Filer struct {
base *url.URL
client *httpClient
authKey string
}
// FilerUploadResult upload result of response from filer server. According to https://github.com/chrislusf/seaweedfs/wiki/Filer-Server-API.
type FilerUploadResult struct {
Name string `json:"name,omitempty"`
FileURL string `json:"url,omitempty"`
FileID string `json:"fid,omitempty"`
Size int64 `json:"size,omitempty"`
Error string `json:"error,omitempty"`
}
// NewFiler new filer with filer server's url
func NewFiler(u string, client *http.Client, opts ...FilerOption) (f *Filer, err error) {
return newFiler(u, client, opts...)
}
func newFiler(u string, client *http.Client, opts ...FilerOption) (f *Filer, err error) {
// base url
base, err := parseURI(u)
if err != nil {
return
}
// filer
f = &Filer{
base: base,
}
// apply options
for _, opt := range opts {
opt(f)
}
// client
var clientOpts []HttpClientOption
if f.authKey != "" {
clientOpts = append(clientOpts, WithHttpClientAuthKey(f.authKey))
}
f.client = newHTTPClient(client, clientOpts...)
return f, nil
}
// Close underlying daemons.
func (f *Filer) Close() (err error) {
if f.client != nil {
err = f.client.Close()
}
return
}
// UploadFile a file.
func (f *Filer) UploadFile(localFilePath, newPath, collection, ttl string) (result *FilerUploadResult, err error) {
fp, err := NewFilePart(localFilePath)
if err != nil {
return result, err
}
defer fp.Close()
var data []byte
data, status, err := f.client.upload(encodeURI(*f.base, newPath, normalize(nil, collection, ttl)), localFilePath, fp.Reader, fp.MimeType)
if err != nil {
return result, err
}
var res FilerUploadResult
if err = json.Unmarshal(data, &res); err != nil {
if status == 404 {
return nil, errors.New("404 not found")
}
return result, err
}
result = &res
if status >= 400 {
return result, errors.New(res.Error)
}
return result, nil
}
// UploadDir upload files from a directory.
func (f *Filer) UploadDir(localDirPath, newPath, collection, ttl string) (results []*FilerUploadResult, err error) {
if strings.HasSuffix(localDirPath, "/") {
localDirPath = localDirPath[:(len(localDirPath) - 1)]
}
if !strings.HasPrefix(newPath, "/") {
newPath = "/" + newPath
}
files, err := listFilesRecursive(localDirPath)
if err != nil {
return results, err
}
for _, info := range files {
newFilePath := newPath + strings.Replace(info.Path, localDirPath, "", -1)
result, err := f.UploadFile(info.Path, newFilePath, collection, ttl)
if err != nil {
return results, err
}
results = append(results, result)
}
return
}
// Upload content.
func (f *Filer) Upload(content io.Reader, fileSize int64, newPath, collection, ttl string) (result *FilerUploadResult, err error) {
fp := NewFilePartFromReader(ioutil.NopCloser(content), newPath, fileSize)
var data []byte
data, _, err = f.client.upload(encodeURI(*f.base, newPath, normalize(nil, collection, ttl)), newPath, ioutil.NopCloser(content), "")
if err == nil {
result = &FilerUploadResult{}
err = json.Unmarshal(data, result)
}
_ = fp.Close()
return
}
// ListDir List a directory.
func (f *Filer) ListDir(path string) (files []FilerFileInfo, err error) {
data, _, err := f.GetJson(path, nil)
if err != nil {
return files, err
}
if len(data) == 0 {
return
}
var res FilerListDirResponse
if err := json.Unmarshal(data, &res); err != nil {
return files, err
}
for _, file := range res.Entries {
file = getFileWithExtendedFields(file)
files = append(files, file)
}
return
}
// ListDirRecursive List a directory recursively.
func (f *Filer) ListDirRecursive(path string) (files []FilerFileInfo, err error) {
entries, err := f.ListDir(path)
if err != nil {
return files, err
}
for _, file := range entries {
file = getFileWithExtendedFields(file)
if file.IsDir {
file.Children, err = f.ListDirRecursive(file.FullPath)
if err != nil {
return files, err
}
}
files = append(files, file)
}
return
}
// Get response data from filer.
func (f *Filer) Get(path string, args url.Values, header map[string]string) (data []byte, statusCode int, err error) {
data, statusCode, err = f.client.get(encodeURI(*f.base, path, args), header)
return
}
// GetJson Get response data from filer.
func (f *Filer) GetJson(path string, args url.Values) (data []byte, statusCode int, err error) {
header := map[string]string{
"Accept": "application/json",
}
data, statusCode, err = f.client.get(encodeURI(*f.base, path, args), header)
return
}
// Download a file.
func (f *Filer) Download(path string, args url.Values, callback func(io.Reader) error) (err error) {
_, err = f.client.download(encodeURI(*f.base, path, args), callback)
return
}
// Delete a file/dir.
func (f *Filer) Delete(path string, args url.Values) (err error) {
_, err = f.client.delete(encodeURI(*f.base, path, args))
return
}
// DeleteDir a dir.
func (f *Filer) DeleteDir(path string) (err error) {
args := map[string][]string{"recursive": {"true"}}
_, err = f.client.delete(encodeURI(*f.base, path, args))
return
}
// DeleteFile a file.
func (f *Filer) DeleteFile(path string) (err error) {
_, err = f.client.delete(encodeURI(*f.base, path, nil))
return
}