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Implement server side copies if possible - fixes #99

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Add optional fs.Copier interface

Implemented for
  * swift
  * s3
  * drive
  * dropbox
  * google cloud storage
This commit is contained in:
Nick Craig-Wood 2015-02-14 18:48:08 +00:00
parent fedf81c2b7
commit a96b522958
19 changed files with 355 additions and 40 deletions
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24
swift/swift.go
View file

@ -328,6 +328,29 @@ func (fs *FsSwift) Precision() time.Duration {
return time.Nanosecond
}
// Copy src to this remote using server side copy operations.
//
// This is stored with the remote path given
//
// It returns the destination Object and a possible error
//
// Will only be called if src.Fs().Name() == f.Name()
//
// If it isn't possible then return fs.ErrorCantCopy
func (f *FsSwift) Copy(src fs.Object, remote string) (fs.Object, error) {
srcObj, ok := src.(*FsObjectSwift)
if !ok {
fs.Debug(src, "Can't copy - not same remote type")
return nil, fs.ErrorCantCopy
}
srcFs := srcObj.swift
_, err := f.c.ObjectCopy(srcFs.container, srcFs.root+srcObj.remote, f.container, f.root+remote, nil)
if err != nil {
return nil, err
}
return f.NewFsObject(remote), nil
}
// ------------------------------------------------------------
// Return the parent Fs
@ -446,4 +469,5 @@ func (o *FsObjectSwift) Remove() error {
// Check the interfaces are satisfied
var _ fs.Fs = &FsSwift{}
var _ fs.Copier = &FsSwift{}
var _ fs.Object = &FsObjectSwift{}

3
swift/swift_test.go
View file

@ -1,7 +1,7 @@
// Test Swift filesystem interface
//
// Automatically generated - DO NOT EDIT
// Regenerate with: go run gen_tests.go or make gen_tests
// Regenerate with: make gen_tests
package swift_test
import (
@ -34,6 +34,7 @@ func TestFsListRoot(t *testing.T) { fstests.TestFsListRoot(t) }
func TestFsListFile1(t *testing.T) { fstests.TestFsListFile1(t) }
func TestFsNewFsObject(t *testing.T) { fstests.TestFsNewFsObject(t) }
func TestFsListFile1and2(t *testing.T) { fstests.TestFsListFile1and2(t) }
func TestFsCopy(t *testing.T) { fstests.TestFsCopy(t) }
func TestFsRmdirFull(t *testing.T) { fstests.TestFsRmdirFull(t) }
func TestFsPrecision(t *testing.T) { fstests.TestFsPrecision(t) }
func TestObjectString(t *testing.T) { fstests.TestObjectString(t) }