48 lines
1.7 KiB
Go
48 lines
1.7 KiB
Go
/*
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Copyright 2017 The Kubernetes 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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tasks "github.com/containerd/containerd/api/services/tasks/v1"
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"github.com/pkg/errors"
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"golang.org/x/net/context"
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runtime "k8s.io/kubernetes/pkg/kubelet/apis/cri/runtime/v1alpha2"
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)
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// ContainerStats returns stats of the container. If the container does not
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// exist, the call returns an error.
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func (c *criService) ContainerStats(ctx context.Context, in *runtime.ContainerStatsRequest) (*runtime.ContainerStatsResponse, error) {
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cntr, err := c.containerStore.Get(in.GetContainerId())
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if err != nil {
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return nil, errors.Wrap(err, "failed to find container")
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}
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request := &tasks.MetricsRequest{Filters: []string{"id==" + cntr.ID}}
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resp, err := c.client.TaskService().Metrics(ctx, request)
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if err != nil {
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return nil, errors.Wrap(err, "failed to fetch metrics for task")
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}
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if len(resp.Metrics) != 1 {
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return nil, errors.Errorf("unexpected metrics response: %+v", resp.Metrics)
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}
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cs, err := c.getContainerMetrics(cntr.Metadata, resp.Metrics[0])
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if err != nil {
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return nil, errors.Wrap(err, "failed to decode container metrics")
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}
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return &runtime.ContainerStatsResponse{Stats: cs}, nil
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}
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