cmd/sync-containers: add a dry-run option.
Updates tailscale/corp#8461 Signed-off-by: David Anderson <danderson@tailscale.com>
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@ -31,9 +31,10 @@ import (
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)
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var (
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src = flag.String("src", "", "Source image")
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dst = flag.String("dst", "", "Destination image")
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max = flag.Int("max", 0, "Maximum number of tags to sync (0 for all tags)")
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src = flag.String("src", "", "Source image")
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dst = flag.String("dst", "", "Destination image")
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max = flag.Int("max", 0, "Maximum number of tags to sync (0 for all tags)")
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dryRun = flag.Bool("dry-run", true, "Don't actually sync anything")
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)
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func main() {
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@ -69,9 +70,13 @@ func main() {
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}
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}
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for _, tag := range add {
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log.Printf("Syncing tag %q", tag)
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if err := copyTag(*src, *dst, tag, opts...); err != nil {
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log.Printf("Syncing tag %q: progress error: %v", tag, err)
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if !*dryRun {
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log.Printf("Syncing tag %q", tag)
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if err := copyTag(*src, *dst, tag, opts...); err != nil {
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log.Printf("Syncing tag %q: progress error: %v", tag, err)
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}
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} else {
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log.Printf("Dry run: would sync tag %q", tag)
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}
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}
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