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c435551ccc
pborman/uuid and google/uuid used to be different versions of the same package, but now pborman/uuid is a compatibility wrapper around google/uuid, maintained by the same person. Clean up some of the usage as the functions differ slightly. Not yet removed some uses of pborman/uuid in vendored code but I have PRs in process for these. Signed-off-by: Justin Cormack <justin.cormack@docker.com>
35 lines
848 B
Go
35 lines
848 B
Go
package daemon // import "github.com/docker/docker/daemon"
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/docker/docker/pkg/ioutils"
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"github.com/google/uuid"
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)
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func loadOrCreateUUID(path string) (string, error) {
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err := os.MkdirAll(filepath.Dir(path), 0755)
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if err != nil {
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return "", err
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}
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var id string
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idb, err := ioutil.ReadFile(path)
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if os.IsNotExist(err) {
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id = uuid.New().String()
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if err := ioutils.AtomicWriteFile(path, []byte(id), os.FileMode(0600)); err != nil {
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return "", fmt.Errorf("Error saving uuid file: %s", err)
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}
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} else if err != nil {
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return "", fmt.Errorf("Error loading uuid file %s: %s", path, err)
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} else {
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idp, err := uuid.Parse(string(idb))
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if err != nil {
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return "", fmt.Errorf("Error parsing uuid in file %s: %s", path, err)
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}
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id = idp.String()
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}
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return id, nil
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}
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