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Introduce ProvisioningRequest processors
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121 changes: 121 additions & 0 deletions
121
cluster-autoscaler/processors/provreq/provisioning_request_pods_filter.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| /* | ||
| Copyright 2023 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
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| package provreq | ||
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| import ( | ||
| "fmt" | ||
| "time" | ||
|
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| apiv1 "k8s.io/api/core/v1" | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/autoscaler/cluster-autoscaler/context" | ||
| "k8s.io/autoscaler/cluster-autoscaler/processors/pods" | ||
| "k8s.io/autoscaler/cluster-autoscaler/provisioningrequest/provreqclient" | ||
| "k8s.io/autoscaler/cluster-autoscaler/utils/klogx" | ||
| "k8s.io/klog/v2" | ||
| ) | ||
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| const provisioningRequestPodAnnotationKey = "cluster-autoscaler.kubernetes.io/consume-provisioning-request" | ||
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| // EventManager is an interface for handling events for provisioning request. | ||
| type EventManager interface { | ||
| LogIgnoredInScaleUpEvent(context *context.AutoscalingContext, now time.Time, pod *apiv1.Pod, prName string) | ||
| Reset() | ||
| } | ||
|
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| type defaultEventManager struct { | ||
| prClient provreqclient.ProvisioningRequestClient | ||
| } | ||
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| // NewDefautlEventManager return basic event manager. | ||
| func NewDefautlEventManager(pr provreqclient.ProvisioningRequestClient) *defaultEventManager { | ||
| return &defaultEventManager{} | ||
| } | ||
|
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| // LogIgnoredInScaleUpEvent adds event about ignored scale up for unscheduled pod, that consumes Provisioning Request. | ||
| func (e *defaultEventManager) LogIgnoredInScaleUpEvent(context *context.AutoscalingContext, now time.Time, pod *apiv1.Pod, prName string) { | ||
| pr, err := e.prClient.ProvisioningRequest(pod.Namespace, prName) | ||
| if err != nil { | ||
| if !errors.IsNotFound(err) { | ||
| klog.Warningf("While fetching Provisioning Request %s/%s got unrecognized error: %v", pod.Namespace, prName, err) | ||
| return | ||
| } | ||
| } | ||
| message := fmt.Sprintf("Unschedulable pod ignored in scale-up loop, because it's consuming ProvisioningRequest %s/%s", pr.Namespace(), pr.Name()) | ||
| context.Recorder.Event(pod, apiv1.EventTypeWarning, "", message) | ||
| } | ||
|
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| // Reset resets event manager internal structure. | ||
| func (e *defaultEventManager) Reset() {} | ||
|
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| // ProvisioningRequestPodsFilter filter out pods that consumes Provisioning Request | ||
| type ProvisioningRequestPodsFilter struct { | ||
| e EventManager | ||
| } | ||
|
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| // Process filters out all pods that are consuming a Provisioning Request from unschedulable pods list. | ||
| func (p *ProvisioningRequestPodsFilter) Process( | ||
| context *context.AutoscalingContext, | ||
| unschedulablePods []*apiv1.Pod) ([]*apiv1.Pod, error) { | ||
| now := time.Now() | ||
| p.e.Reset() | ||
| loggingQuota := klogx.PodsLoggingQuota() | ||
| result := make([]*apiv1.Pod, 0, len(unschedulablePods)) | ||
| for _, pod := range unschedulablePods { | ||
| prName, found := provisioningRequestName(pod) | ||
| if !found { | ||
| result = append(result, pod) | ||
| continue | ||
| } | ||
| klogx.V(1).UpTo(loggingQuota).Infof("Ignoring unschedulable pod %s/%s as it consumes ProvisioningRequest: %s/%s", pod.Namespace, pod.Name, pod.Namespace, prName) | ||
| p.e.LogIgnoredInScaleUpEvent(context, now, pod, prName) | ||
| } | ||
| klogx.V(1).Over(loggingQuota).Infof("There are also %v other pods which were ignored", -loggingQuota.Left()) | ||
| return result, nil | ||
| } | ||
|
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| // CleanUp cleans up the processor's internal structures. | ||
| func (p *ProvisioningRequestPodsFilter) CleanUp() {} | ||
|
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| // ProvisioningRequestPodsInjector is a processor that inject in-memory pods from ProvisioningRequest. | ||
| type ProvisioningRequestPodsInjector struct{} | ||
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| // Process inject in-memory pods that consumes a Provisioning Request to unschedulable pods list. | ||
| // TODO(yaroslava): implement | ||
| func (p *ProvisioningRequestPodsInjector) Process( | ||
| context *context.AutoscalingContext, | ||
| unschedulablePods []*apiv1.Pod) ([]*apiv1.Pod, error) { | ||
| return unschedulablePods, nil | ||
| } | ||
|
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| // CleanUp cleans up the processor's internal structures. | ||
| func (p *ProvisioningRequestPodsInjector) CleanUp() {} | ||
|
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| // AddProvisioningRequestProcessors appends Provisioning Request processor to the list of pods list processors | ||
| func AddProvisioningRequestProcessors(p *pods.ListedPodListProcessor, e EventManager) *pods.ListedPodListProcessor { | ||
| p.Processors = append(p.Processors, &ProvisioningRequestPodsFilter{e}, &ProvisioningRequestPodsInjector{}) | ||
| return p | ||
| } | ||
|
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| func provisioningRequestName(pod *v1.Pod) (string, bool) { | ||
| if pod == nil || pod.Annotations == nil { | ||
| return "", false | ||
| } | ||
| provReqName, found := pod.Annotations[provisioningRequestPodAnnotationKey] | ||
| return provReqName, found | ||
| } |
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