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33 lines
797 B
Go
33 lines
797 B
Go
3 years ago
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package imageutil
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import (
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"encoding/base64"
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"encoding/json"
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binfotypes "github.com/moby/buildkit/util/buildinfo/types"
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"github.com/pkg/errors"
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)
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// BuildInfo returns build info from image config.
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func BuildInfo(dt []byte) (*binfotypes.BuildInfo, error) {
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if len(dt) == 0 {
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return nil, nil
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}
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var config binfotypes.ImageConfig
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if err := json.Unmarshal(dt, &config); err != nil {
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return nil, errors.Wrap(err, "failed to unmarshal image config")
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}
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if len(config.BuildInfo) == 0 {
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return nil, nil
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}
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dtbi, err := base64.StdEncoding.DecodeString(config.BuildInfo)
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if err != nil {
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return nil, err
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}
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var bi binfotypes.BuildInfo
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if err = json.Unmarshal(dtbi, &bi); err != nil {
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return nil, errors.Wrap(err, "failed to decode buildinfo from image config")
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}
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return &bi, nil
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}
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