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Add update checking, performance improvements (#418)
* Add update checking, performance improvements * f
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package archive | ||
|
|
||
| import ( | ||
| "archive/tar" | ||
| "compress/gzip" | ||
| "io" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| "github.com/pkg/errors" | ||
| ) | ||
|
|
||
| // CreateTGZFileFromDir will archive the contents of dir into | ||
| // a tgz file, and the caller must delete | ||
| func CreateTGZFileFromDir(dir string) (string, error) { | ||
| tmpFile, err := ioutil.TempFile("", "replicated-update") | ||
| if err != nil { | ||
| return "", errors.Wrap(err, "create temp file") | ||
| } | ||
|
|
||
| file, err := os.Create(tmpFile.Name()) | ||
| if err != nil { | ||
| return "", errors.Wrap(err, "create file") | ||
| } | ||
| defer file.Close() | ||
|
|
||
| gw := gzip.NewWriter(file) | ||
| defer gw.Close() | ||
|
|
||
| tw := tar.NewWriter(gw) | ||
| defer tw.Close() | ||
|
|
||
| // walk path | ||
| if err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if info.IsDir() { | ||
| return nil | ||
| } | ||
|
|
||
| if info.Mode()&os.ModeSymlink != 0 { | ||
| return nil | ||
| } | ||
|
|
||
| header, err := tar.FileInfoHeader(info, "") | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| header.Name = strings.TrimLeft(strings.TrimPrefix(path, dir), string(filepath.Separator)) | ||
| header.Size = info.Size() | ||
| header.Mode = int64(info.Mode()) | ||
| header.ModTime = info.ModTime() | ||
|
|
||
| singleFile, err := os.Open(path) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer singleFile.Close() | ||
|
|
||
| if err := tw.WriteHeader(header); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if _, err := io.Copy(tw, singleFile); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| }); err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| return tmpFile.Name(), nil | ||
| } |
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