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NRI: minor cleanups

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Address some post-merge review comments.

Signed-off-by: Rob Murray <rob.murray@docker.com>
This commit is contained in:
Rob Murray
2025-12-10 15:10:38 +00:00
parent 07024223e2
commit dc1fe0be82
2 changed files with 17 additions and 15 deletions
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23
daemon/internal/nri/nri.go
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@@ -5,7 +5,7 @@
// the same level of trust as the daemon itself, because they can make arbitrary
// modifications to container settings.
//
// The NRI framework is implemented by https://github.com/containerd/nri - see that
// The NRI framework is implemented by [github.com/containerd/nri] - see that
// package for more details about NRI and the framework.
//
// Plugins are long-running processed (not instantiated per-request like runtime shims,
@@ -47,8 +47,8 @@ type NRI struct {
cfg Config
// mu protects nri - read lock for container operations, write lock for sync and shutdown.
mu sync.RWMutex
nri *adaptation.Adaptation
mu sync.RWMutex
adap *adaptation.Adaptation
}
type ContainerLister interface {
@@ -79,11 +79,11 @@ func NewNRI(ctx context.Context, cfg Config) (*NRI, error) {
nrilog.Set(&logShim{})
var err error
n.nri, err = adaptation.New("docker", dockerversion.Version, n.syncFn, n.updateFn, nriOptions(n.cfg.DaemonConfig)...)
n.adap, err = adaptation.New("docker", dockerversion.Version, n.syncFn, n.updateFn, nriOptions(n.cfg.DaemonConfig)...)
if err != nil {
return nil, err
}
if err := n.nri.Start(); err != nil {
if err := n.adap.Start(); err != nil {
return nil, err
}
return n, nil
@@ -93,20 +93,23 @@ func NewNRI(ctx context.Context, cfg Config) (*NRI, error) {
func (n *NRI) Shutdown(ctx context.Context) {
n.mu.Lock()
defer n.mu.Unlock()
if n.nri == nil {
if n.adap == nil {
return
}
log.G(ctx).Info("Shutting down NRI")
n.nri.Stop()
n.nri = nil
n.adap.Stop()
n.adap = nil
}
// CreateContainer notifies plugins of a "creation" NRI-lifecycle event for a container,
// allowing the plugin to adjust settings before the container is created.
//
// No lock is acquired on ctr, CreateContainer the caller must ensure it cannot be
// accessed from other threads.
func (n *NRI) CreateContainer(ctx context.Context, ctr *container.Container) error {
n.mu.RLock()
defer n.mu.RUnlock()
if n.nri == nil {
if n.adap == nil {
return nil
}
// ctr.State can safely be locked here, but there's no need because it's expected
@@ -119,7 +122,7 @@ func (n *NRI) CreateContainer(ctx context.Context, ctr *container.Container) err
// TODO(robmry): call RunPodSandbox?
resp, err := n.nri.CreateContainer(ctx, &adaptation.CreateContainerRequest{
resp, err := n.adap.CreateContainer(ctx, &adaptation.CreateContainerRequest{
Pod: nriPod,
Container: nriCtr,
})