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>
48 lines
1.4 KiB
Go
48 lines
1.4 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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"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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func (c *criService) PodSandboxStats(
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ctx context.Context,
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r *runtime.PodSandboxStatsRequest,
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) (*runtime.PodSandboxStatsResponse, error) {
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sandbox, err := c.sandboxStore.Get(r.GetPodSandboxId())
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if err != nil {
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return nil, errors.Wrapf(err, "an error occurred when trying to find sandbox %s", r.GetPodSandboxId())
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}
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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 getting metrics for sandbox %s", r.GetPodSandboxId())
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}
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podSandboxStats, 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 pod sandbox metrics %s", r.GetPodSandboxId())
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}
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return &runtime.PodSandboxStatsResponse{Stats: podSandboxStats}, nil
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}
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