f914edf4f6
When the pods are transitioning there are several cases where containers might not be in valid state. There were several cases where the stats where failing hard but we should just continue on as they are transient and will be picked up again when kubelet queries for the stats again. Signed-off-by: James Sturtevant <jstur@microsoft.com> Signed-off-by: Mark Rossetti <marosset@microsoft.com>
85 lines
2.6 KiB
Go
85 lines
2.6 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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"context"
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"fmt"
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"github.com/containerd/containerd/errdefs"
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"github.com/containerd/containerd/log"
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sandboxstore "github.com/containerd/containerd/pkg/cri/store/sandbox"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
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"github.com/hashicorp/go-multierror"
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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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var errs *multierror.Error
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podSandboxStats := new(runtime.ListPodSandboxStatsResponse)
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for _, sandbox := range sandboxes {
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sandboxStats, err := c.podSandboxStats(ctx, sandbox)
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switch {
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case errdefs.IsUnavailable(err):
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log.G(ctx).WithField("podsandboxid", sandbox.ID).Debugf("failed to get pod sandbox stats, this is likely a transient error: %v", err)
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case err != nil:
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errs = multierror.Append(errs, fmt.Errorf("failed to decode sandbox container metrics for sandbox %q: %w", sandbox.ID, err))
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default:
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podSandboxStats.Stats = append(podSandboxStats.Stats, sandboxStats)
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}
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}
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return podSandboxStats, errs.ErrorOrNil()
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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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