/
sandbox_list.go
101 lines (92 loc) · 2.71 KB
/
sandbox_list.go
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package server
import (
"github.com/cri-o/cri-o/internal/lib/sandbox"
"github.com/cri-o/cri-o/internal/log"
"golang.org/x/net/context"
"k8s.io/apimachinery/pkg/fields"
types "k8s.io/cri-api/pkg/apis/runtime/v1"
)
// ListPodSandbox returns a list of SandBoxes.
func (s *Server) ListPodSandbox(ctx context.Context, req *types.ListPodSandboxRequest) (*types.ListPodSandboxResponse, error) {
ctx, span := log.StartSpan(ctx)
defer span.End()
podList := s.filterSandboxList(ctx, req.Filter, s.ContainerServer.ListSandboxes())
respList := make([]*types.PodSandbox, 0, len(podList))
for _, sb := range podList {
// Skip sandboxes that aren't created yet
if !sb.Created() {
continue
}
pod := sb.CRISandbox()
// Filter by other criteria such as state and labels.
if filterSandbox(pod, req.Filter) {
respList = append(respList, pod)
}
}
return &types.ListPodSandboxResponse{
Items: respList,
}, nil
}
// filterSandboxList applies a protobuf-defined filter to retrieve only intended pod sandboxes. Not matching
// the filter is not considered an error but will return an empty response.
func (s *Server) filterSandboxList(ctx context.Context, filter *types.PodSandboxFilter, podList []*sandbox.Sandbox) []*sandbox.Sandbox {
ctx, span := log.StartSpan(ctx)
defer span.End()
// Filter by pod id first.
if filter == nil {
return podList
}
if filter.Id != "" {
id, err := s.PodIDIndex().Get(filter.Id)
if err != nil {
// Not finding an ID in a filtered list should not be considered
// and error; it might have been deleted when stop was done.
// Log and return an empty struct.
log.Warnf(ctx, "Unable to find pod %s with filter", filter.Id)
return []*sandbox.Sandbox{}
}
sb := s.getSandbox(ctx, id)
if sb == nil {
podList = []*sandbox.Sandbox{}
} else {
podList = []*sandbox.Sandbox{sb}
}
}
finalList := make([]*sandbox.Sandbox, 0, len(podList))
for _, pod := range podList {
// Skip sandboxes that aren't created yet
if !pod.Created() {
continue
}
if filter.State != nil {
if pod.State() != filter.State.State {
continue
}
}
if filter.LabelSelector != nil {
sel := fields.SelectorFromSet(filter.LabelSelector)
if !sel.Matches(pod.Labels()) {
continue
}
}
finalList = append(finalList, pod)
}
return finalList
}
// filterSandbox returns whether passed container matches filtering criteria
func filterSandbox(p *types.PodSandbox, filter *types.PodSandboxFilter) bool {
if filter != nil {
if filter.State != nil {
if p.State != filter.State.State {
return false
}
}
if filter.LabelSelector != nil {
sel := fields.SelectorFromSet(filter.LabelSelector)
if !sel.Matches(fields.Set(p.Labels)) {
return false
}
}
}
return true
}