129 lines
2.9 KiB
Go
129 lines
2.9 KiB
Go
/*
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Copyright 2021 Alibaba Group Holding Limited.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package remote
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import (
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"context"
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"io"
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"github.com/jlaffaye/ftp"
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)
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func init() {
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MustRegisterFileService("ftp", &ftpFs{})
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}
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type ftpFs struct{}
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type ftpContext struct {
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ctx context.Context
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addr string
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username string
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password string
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}
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func newFtpContext(ctx context.Context, auth, params map[string]string) *ftpContext {
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if ctx == nil {
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ctx = context.Background()
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}
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return &ftpContext{
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ctx: ctx,
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addr: auth["addr"],
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username: auth["username"],
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password: auth["password"],
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}
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}
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func (f *ftpFs) newFtpClient(ftpCtx *ftpContext) (*ftp.ServerConn, error) {
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c, err := ftp.Dial(ftpCtx.addr, ftp.DialWithContext(ftpCtx.ctx))
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if err != nil {
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return nil, err
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}
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err = c.Login(ftpCtx.username, ftpCtx.password)
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if err != nil {
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defer c.Quit()
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return nil, err
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}
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return c, nil
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}
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func (f *ftpFs) DeleteFile(ctx context.Context, path string, auth, params map[string]string) error {
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c, err := f.newFtpClient(newFtpContext(ctx, auth, params))
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if err != nil {
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return err
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}
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defer c.Quit()
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return c.Delete(path)
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}
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func (f *ftpFs) UploadFile(ctx context.Context, reader io.Reader, path string, auth, params map[string]string) (FileTask, error) {
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c, err := f.newFtpClient(newFtpContext(ctx, auth, params))
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if err != nil {
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return nil, err
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}
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ft := newFileTask(ctx)
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go func() {
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defer c.Quit()
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err := c.Stor(path, reader)
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ft.complete(err)
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}()
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return ft, nil
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}
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func (f *ftpFs) DownloadFile(ctx context.Context, writer io.Writer, path string, auth, params map[string]string) (FileTask, error) {
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c, err := f.newFtpClient(newFtpContext(ctx, auth, params))
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if err != nil {
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return nil, err
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}
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ft := newFileTask(ctx)
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go func() {
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defer c.Quit()
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r, err := c.Retr(path)
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if err != nil {
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ft.complete(err)
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}
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defer r.Close()
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// Copy from response to writer.
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_, err = io.Copy(writer, r)
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ft.complete(err)
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}()
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return ft, nil
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}
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func (f *ftpFs) DeleteExpiredFile(ctx context.Context, path string, auth, params map[string]string) (FileTask, error) {
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panic("Not implemented")
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}
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func (f *ftpFs) ListFiles(ctx context.Context, writer io.Writer, path string, auth, params map[string]string) (FileTask, error) {
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panic("Not implemented")
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}
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func (o *ftpFs) ListAllFiles(ctx context.Context, path string, auth, params map[string]string) (FileTask, error) {
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panic("Not implemented")
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}
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