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layer: relax graphdriver ID format
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
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parent
ea36c3cbaf
commit
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1 changed files with 3 additions and 3 deletions
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@ -3,7 +3,6 @@ package layer // import "github.com/docker/docker/layer"
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import (
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"compress/gzip"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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@ -16,6 +15,7 @@ import (
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"github.com/docker/distribution"
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"github.com/docker/docker/pkg/ioutils"
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"github.com/opencontainers/go-digest"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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@ -194,8 +194,8 @@ func (fms *fileMetadataStore) GetCacheID(layer ChainID) (string, error) {
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}
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content := strings.TrimSpace(string(contentBytes))
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if !stringIDRegexp.MatchString(content) {
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return "", errors.New("invalid cache id value")
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if content == "" {
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return "", errors.Errorf("invalid cache id value")
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}
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return content, nil
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