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Adds Windows resource limits support

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This will allow running Windows Containers to have their resource
limits updated through containerd. The CPU resource limits support
has been added for Windows Server 20H2 and newer, on older versions
hcsshim will raise an Unimplemented error.

Signed-off-by: Claudiu Belu <cbelu@cloudbasesolutions.com>
This commit is contained in:
Claudiu Belu
2021-07-21 19:41:59 -07:00
parent 5b29542cbe
commit 2bc77b8a28
10 changed files with 233 additions and 159 deletions
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31
pkg/cri/server/container_update_resources_windows.go
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@@ -17,13 +17,34 @@
package server
import (
"github.com/containerd/containerd/errdefs"
runtimespec "github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
"golang.org/x/net/context"
runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
criconfig "github.com/containerd/containerd/pkg/cri/config"
"github.com/containerd/containerd/pkg/cri/opts"
"github.com/containerd/containerd/pkg/cri/util"
)
// UpdateContainerResources updates ContainerConfig of the container.
// TODO(windows): Figure out whether windows support this.
func (c *criService) UpdateContainerResources(ctx context.Context, r *runtime.UpdateContainerResourcesRequest) (*runtime.UpdateContainerResourcesResponse, error) {
return nil, errdefs.ErrNotImplemented
// updateOCIResource updates container resource limit.
func updateOCIResource(ctx context.Context, spec *runtimespec.Spec, r *runtime.UpdateContainerResourcesRequest,
config criconfig.Config) (*runtimespec.Spec, error) {
// Copy to make sure old spec is not changed.
var cloned runtimespec.Spec
if err := util.DeepCopy(&cloned, spec); err != nil {
return nil, errors.Wrap(err, "failed to deep copy")
}
if cloned.Windows == nil {
cloned.Windows = &runtimespec.Windows{}
}
if err := opts.WithWindowsResources(r.GetWindows())(ctx, nil, nil, &cloned); err != nil {
return nil, errors.Wrap(err, "unable to set windows container resources")
}
return &cloned, nil
}
func getResources(spec *runtimespec.Spec) interface{} {
return spec.Windows.Resources
}