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package computestorage
import (
"context"
"encoding/json"
"github.com/Microsoft/hcsshim/internal/oc"
"github.com/Microsoft/hcsshim/osversion"
"github.com/pkg/errors"
"go.opencensus.io/trace"
"golang.org/x/sys/windows"
)
// SetupBaseOSLayer sets up a layer that contains a base OS for a container.
//
// `layerPath` is a path to a directory containing the layer.
//
// `vhdHandle` is an empty file handle of `options.Type == OsLayerTypeContainer`
// or else it is a file handle to the 'SystemTemplateBase.vhdx' if `options.Type
// == OsLayerTypeVm`.
//
// `options` are the options applied while processing the layer.
func SetupBaseOSLayer(ctx context.Context, layerPath string, vhdHandle windows.Handle, options OsLayerOptions) (err error) {
title := "hcsshim.SetupBaseOSLayer"
ctx, span := trace.StartSpan(ctx, title)
defer span.End()
defer func() { oc.SetSpanStatus(span, err) }()
span.AddAttributes(
trace.StringAttribute("layerPath", layerPath),
)
bytes, err := json.Marshal(options)
if err != nil {
return err
}
err = hcsSetupBaseOSLayer(layerPath, vhdHandle, string(bytes))
if err != nil {
return errors.Wrap(err, "failed to setup base OS layer")
}
return nil
}
// SetupBaseOSVolume sets up a volume that contains a base OS for a container.
//
// `layerPath` is a path to a directory containing the layer.
//
// `volumePath` is the path to the volume to be used for setup.
//
// `options` are the options applied while processing the layer.
func SetupBaseOSVolume(ctx context.Context, layerPath, volumePath string, options OsLayerOptions) (err error) {
if osversion.Get().Build < 19645 {
return errors.New("SetupBaseOSVolume is not present on builds older than 19645")
}
title := "hcsshim.SetupBaseOSVolume"
ctx, span := trace.StartSpan(ctx, title)
defer span.End()
defer func() { oc.SetSpanStatus(span, err) }()
span.AddAttributes(
trace.StringAttribute("layerPath", layerPath),
trace.StringAttribute("volumePath", volumePath),
)
bytes, err := json.Marshal(options)
if err != nil {
return err
}
err = hcsSetupBaseOSVolume(layerPath, volumePath, string(bytes))
if err != nil {
return errors.Wrap(err, "failed to setup base OS layer")
}
return nil
}
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