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Merge pull request 2042 from restic/fix-2041

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self-update: fix path to output file
This commit is contained in:
Alexander Neumann 2018-10-14 19:48:28 +02:00
commit 7236635cc1
2 changed files with 32 additions and 5 deletions
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28
cmd/restic/cmd_self_update.go
View File

@ -1,4 +1,4 @@
// +build selfupdate // xbuild selfupdate
package main package main
@ -36,16 +36,38 @@ func init() {
cmdRoot.AddCommand(cmdSelfUpdate) cmdRoot.AddCommand(cmdSelfUpdate)
flags := cmdSelfUpdate.Flags() flags := cmdSelfUpdate.Flags()
flags.StringVar(&selfUpdateOptions.Output, "output", os.Args[0], "Save the downloaded file as `filename`") flags.StringVar(&selfUpdateOptions.Output, "output", "", "Save the downloaded file as `filename` (default: running binary itself)")
} }
func runSelfUpdate(opts SelfUpdateOptions, gopts GlobalOptions, args []string) error { func runSelfUpdate(opts SelfUpdateOptions, gopts GlobalOptions, args []string) error {
v, err := selfupdate.DownloadLatestStableRelease(gopts.ctx, opts.Output, Verbosef) if opts.Output == "" {
file, err := os.Executable()
if err != nil {
return errors.Wrap(err, "unable to find executable")
}
opts.Output = file
}
fi, err := os.Lstat(opts.Output)
if err != nil {
return err
}
if !fi.Mode().IsRegular() {
return errors.Errorf("output file %v is not a normal file, use --output to specify a different file", opts.Output)
}
Printf("writing restic to %v\n", opts.Output)
v, err := selfupdate.DownloadLatestStableRelease(gopts.ctx, opts.Output, version, Verbosef)
if err != nil { if err != nil {
return errors.Fatalf("unable to update restic: %v", err) return errors.Fatalf("unable to update restic: %v", err)
} }
if v != version {
Printf("successfully updated restic to version %v\n", v) Printf("successfully updated restic to version %v\n", v)
}
return nil return nil
} }

7
internal/selfupdate/download.go
View File

@ -106,7 +106,7 @@ func extractToFile(buf []byte, filename, target string, printf func(string, ...i
// DownloadLatestStableRelease downloads the latest stable released version of // DownloadLatestStableRelease downloads the latest stable released version of
// restic and saves it to target. It returns the version string for the newest // restic and saves it to target. It returns the version string for the newest
// version. The function printf is used to print progress information. // version. The function printf is used to print progress information.
func DownloadLatestStableRelease(ctx context.Context, target string, printf func(string, ...interface{})) (version string, err error) { func DownloadLatestStableRelease(ctx context.Context, target, currentVersion string, printf func(string, ...interface{})) (version string, err error) {
if printf == nil { if printf == nil {
printf = func(string, ...interface{}) {} printf = func(string, ...interface{}) {}
} }
@ -118,6 +118,11 @@ func DownloadLatestStableRelease(ctx context.Context, target string, printf func
return "", err return "", err
} }
if rel.Version == currentVersion {
printf("restic is up to date\n")
return currentVersion, nil
}
printf("latest version is %v\n", rel.Version) printf("latest version is %v\n", rel.Version)
_, sha256sums, err := getGithubDataFile(ctx, rel.Assets, "SHA256SUMS", printf) _, sha256sums, err := getGithubDataFile(ctx, rel.Assets, "SHA256SUMS", printf)