117 lines
3.3 KiB
Go
117 lines
3.3 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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"time"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
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containerstore "github.com/containerd/containerd/pkg/cri/store/container"
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)
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// ListContainers lists all containers matching the filter.
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func (c *criService) ListContainers(ctx context.Context, r *runtime.ListContainersRequest) (*runtime.ListContainersResponse, error) {
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start := time.Now()
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// List all containers from store.
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containersInStore := c.containerStore.List()
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var containers []*runtime.Container
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for _, container := range containersInStore {
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containers = append(containers, toCRIContainer(container))
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}
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containers = c.filterCRIContainers(containers, r.GetFilter())
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containerListTimer.UpdateSince(start)
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return &runtime.ListContainersResponse{Containers: containers}, nil
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}
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// toCRIContainer converts internal container object into CRI container.
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func toCRIContainer(container containerstore.Container) *runtime.Container {
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status := container.Status.Get()
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return &runtime.Container{
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Id: container.ID,
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PodSandboxId: container.SandboxID,
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Metadata: container.Config.GetMetadata(),
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Image: container.Config.GetImage(),
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ImageRef: container.ImageRef,
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State: status.State(),
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CreatedAt: status.CreatedAt,
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Labels: container.Config.GetLabels(),
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Annotations: container.Config.GetAnnotations(),
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}
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}
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func (c *criService) normalizeContainerFilter(filter *runtime.ContainerFilter) {
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if cntr, err := c.containerStore.Get(filter.GetId()); err == nil {
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filter.Id = cntr.ID
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}
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if sb, err := c.sandboxStore.Get(filter.GetPodSandboxId()); err == nil {
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filter.PodSandboxId = sb.ID
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}
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}
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// filterCRIContainers filters CRIContainers.
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func (c *criService) filterCRIContainers(containers []*runtime.Container, filter *runtime.ContainerFilter) []*runtime.Container {
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if filter == nil {
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return containers
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}
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// The containerd cri plugin supports short ids so long as there is only one
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// match. So we do a lookup against the store here if a pod id has been
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// included in the filter.
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sb := filter.GetPodSandboxId()
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if sb != "" {
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sandbox, err := c.sandboxStore.Get(sb)
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if err == nil {
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sb = sandbox.ID
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}
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}
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c.normalizeContainerFilter(filter)
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filtered := []*runtime.Container{}
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for _, cntr := range containers {
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if filter.GetId() != "" && filter.GetId() != cntr.Id {
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continue
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}
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if sb != "" && sb != cntr.PodSandboxId {
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continue
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}
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if filter.GetState() != nil && filter.GetState().GetState() != cntr.State {
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continue
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}
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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 := cntr.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, cntr)
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}
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return filtered
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}
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