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>
81 lines
2.4 KiB
Go
81 lines
2.4 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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sandboxstore "github.com/containerd/containerd/pkg/cri/store/sandbox"
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"github.com/pkg/errors"
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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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)
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// ListPodSandboxStats returns stats of all ready sandboxes.
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func (c *criService) ListPodSandboxStats(
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ctx context.Context,
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r *runtime.ListPodSandboxStatsRequest,
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) (*runtime.ListPodSandboxStatsResponse, error) {
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sandboxes := c.sandboxesForListPodSandboxStatsRequest(r)
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podSandboxStats := new(runtime.ListPodSandboxStatsResponse)
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for _, sandbox := range sandboxes {
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metrics, err := metricsForSandbox(sandbox)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to obtain metrics for sandbox %q", sandbox.ID)
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}
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sandboxStats, err := c.podSandboxStats(ctx, sandbox, metrics)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to decode sandbox container metrics for sandbox %q", sandbox.ID)
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}
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podSandboxStats.Stats = append(podSandboxStats.Stats, sandboxStats)
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}
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return podSandboxStats, nil
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}
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func (c *criService) sandboxesForListPodSandboxStatsRequest(r *runtime.ListPodSandboxStatsRequest) []sandboxstore.Sandbox {
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sandboxesInStore := c.sandboxStore.List()
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if r.GetFilter() == nil {
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return sandboxesInStore
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}
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c.normalizePodSandboxStatsFilter(r.GetFilter())
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var sandboxes []sandboxstore.Sandbox
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for _, sandbox := range sandboxesInStore {
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if r.GetFilter().GetId() != "" && sandbox.ID != r.GetFilter().GetId() {
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continue
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}
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if r.GetFilter().GetLabelSelector() != nil &&
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!matchLabelSelector(r.GetFilter().GetLabelSelector(), sandbox.Config.GetLabels()) {
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continue
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}
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// We can't obtain metrics for sandboxes that aren't in ready state
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if sandbox.Status.Get().State != sandboxstore.StateReady {
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continue
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}
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sandboxes = append(sandboxes, sandbox)
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}
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return sandboxes
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}
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