2e6d5709e3
See https://kep.k8s.io/2371 * Implement new CRI RPCs - `ListPodSandboxStats` and `PodSandboxStats` * `ListPodSandboxStats` and `PodSandboxStats` which return stats about pod sandbox. To obtain pod sandbox stats, underlying metrics are read from the pod sandbox cgroup parent. * Process info is obtained by calling into the underlying task * Network stats are taken by looking up network metrics based on the pod sandbox network namespace path * Return more detailed stats for cpu and memory for existing container stats. These metrics use the underlying task's metrics to obtain stats. Signed-off-by: David Porter <porterdavid@google.com>
108 lines
3.1 KiB
Go
108 lines
3.1 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package server
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import (
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"golang.org/x/net/context"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
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sandboxstore "github.com/containerd/containerd/pkg/cri/store/sandbox"
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)
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// ListPodSandbox returns a list of Sandbox.
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func (c *criService) ListPodSandbox(ctx context.Context, r *runtime.ListPodSandboxRequest) (*runtime.ListPodSandboxResponse, error) {
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// List all sandboxes from store.
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sandboxesInStore := c.sandboxStore.List()
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var sandboxes []*runtime.PodSandbox
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for _, sandboxInStore := range sandboxesInStore {
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sandboxes = append(sandboxes, toCRISandbox(
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sandboxInStore.Metadata,
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sandboxInStore.Status.Get(),
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))
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}
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sandboxes = c.filterCRISandboxes(sandboxes, r.GetFilter())
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return &runtime.ListPodSandboxResponse{Items: sandboxes}, nil
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}
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// toCRISandbox converts sandbox metadata into CRI pod sandbox.
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func toCRISandbox(meta sandboxstore.Metadata, status sandboxstore.Status) *runtime.PodSandbox {
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// Set sandbox state to NOTREADY by default.
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state := runtime.PodSandboxState_SANDBOX_NOTREADY
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if status.State == sandboxstore.StateReady {
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state = runtime.PodSandboxState_SANDBOX_READY
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}
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return &runtime.PodSandbox{
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Id: meta.ID,
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Metadata: meta.Config.GetMetadata(),
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State: state,
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CreatedAt: status.CreatedAt.UnixNano(),
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Labels: meta.Config.GetLabels(),
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Annotations: meta.Config.GetAnnotations(),
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RuntimeHandler: meta.RuntimeHandler,
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}
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}
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func (c *criService) normalizePodSandboxFilter(filter *runtime.PodSandboxFilter) {
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if sb, err := c.sandboxStore.Get(filter.GetId()); err == nil {
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filter.Id = sb.ID
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}
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}
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func (c *criService) normalizePodSandboxStatsFilter(filter *runtime.PodSandboxStatsFilter) {
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if sb, err := c.sandboxStore.Get(filter.GetId()); err == nil {
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filter.Id = sb.ID
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}
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}
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// filterCRISandboxes filters CRISandboxes.
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func (c *criService) filterCRISandboxes(sandboxes []*runtime.PodSandbox, filter *runtime.PodSandboxFilter) []*runtime.PodSandbox {
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if filter == nil {
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return sandboxes
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}
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c.normalizePodSandboxFilter(filter)
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filtered := []*runtime.PodSandbox{}
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for _, s := range sandboxes {
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// Filter by id
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if filter.GetId() != "" && filter.GetId() != s.Id {
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continue
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}
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// Filter by state
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if filter.GetState() != nil && filter.GetState().GetState() != s.State {
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continue
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}
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// Filter by label
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if filter.GetLabelSelector() != nil {
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match := true
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for k, v := range filter.GetLabelSelector() {
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got, ok := s.Labels[k]
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if !ok || got != v {
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match = false
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break
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}
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}
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if !match {
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continue
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}
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}
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filtered = append(filtered, s)
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}
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return filtered
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}
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