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self-update: Check current version before download

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This commit is contained in:
Alexander Neumann 2018-10-14 17:29:46 +02:00
parent 7d0f2eaf24
commit a432b42c81
2 changed files with 10 additions and 3 deletions
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6
cmd/restic/cmd_self_update.go
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@ -60,12 +60,14 @@ func runSelfUpdate(opts SelfUpdateOptions, gopts GlobalOptions, args []string) e
Printf("writing restic to %v\n", opts.Output)
v, err := selfupdate.DownloadLatestStableRelease(gopts.ctx, opts.Output, Verbosef)
v, err := selfupdate.DownloadLatestStableRelease(gopts.ctx, opts.Output, version, Verbosef)
if err != nil {
return errors.Fatalf("unable to update restic: %v", err)
}
Printf("successfully updated restic to version %v\n", v)
if v != version {
Printf("successfully updated restic to version %v\n", v)
}
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
// restic and saves it to target. It returns the version string for the newest
// 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 {
printf = func(string, ...interface{}) {}
}
@ -118,6 +118,11 @@ func DownloadLatestStableRelease(ctx context.Context, target string, printf func
return "", err
}
if rel.Version == currentVersion {
printf("restic is up to date\n")
return currentVersion, nil
}
printf("latest version is %v\n", rel.Version)
_, sha256sums, err := getGithubDataFile(ctx, rel.Assets, "SHA256SUMS", printf)