mirror of https://github.com/docker/cli.git
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
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package computestorage
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import (
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"context"
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"encoding/json"
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"github.com/Microsoft/hcsshim/internal/oc"
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"github.com/pkg/errors"
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"go.opencensus.io/trace"
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)
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// ExportLayer exports a container layer.
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//
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// `layerPath` is a path to a directory containing the layer to export.
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//
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// `exportFolderPath` is a pre-existing folder to export the layer to.
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//
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// `layerData` is the parent layer data.
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//
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// `options` are the export options applied to the exported layer.
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func ExportLayer(ctx context.Context, layerPath, exportFolderPath string, layerData LayerData, options ExportLayerOptions) (err error) {
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title := "hcsshim.ExportLayer"
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ctx, span := trace.StartSpan(ctx, title) //nolint:ineffassign,staticcheck
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defer span.End()
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defer func() { oc.SetSpanStatus(span, err) }()
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span.AddAttributes(
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trace.StringAttribute("layerPath", layerPath),
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trace.StringAttribute("exportFolderPath", exportFolderPath),
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)
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ldbytes, err := json.Marshal(layerData)
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if err != nil {
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return err
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}
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obytes, err := json.Marshal(options)
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if err != nil {
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return err
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}
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err = hcsExportLayer(layerPath, exportFolderPath, string(ldbytes), string(obytes))
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if err != nil {
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return errors.Wrap(err, "failed to export layer")
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}
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return nil
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}
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