64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
/*
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Copyright 2024 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 podinjection
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import (
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batchv1 "k8s.io/api/batch/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/autoscaler/cluster-autoscaler/context"
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"k8s.io/klog/v2"
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)
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func createJobControllers(ctx *context.AutoscalingContext) []controller {
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var controllers []controller
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jobs, err := ctx.ListerRegistry.JobLister().List(labels.Everything())
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if err != nil {
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klog.Errorf("Failed to list jobs: %v", err)
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}
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for _, job := range jobs {
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controllers = append(controllers, controller{uid: job.UID, desiredReplicas: desiredReplicasFromJob(job)})
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}
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return controllers
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}
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func desiredReplicasFromJob(job *batchv1.Job) int {
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parallelism := 1
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completion := 1
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if job.Spec.Parallelism != nil {
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parallelism = int(*(job.Spec.Parallelism))
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}
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if job.Spec.Completions != nil {
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completion = int(*(job.Spec.Completions))
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}
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if isWorkQueueJob(job) && job.Status.Succeeded == 0 {
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return parallelism
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}
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incomplete := completion - int(job.Status.Succeeded)
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desiredReplicas := min(incomplete, parallelism)
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return max(desiredReplicas, 0)
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}
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// isWorkQueueJob returns true if the job is a work queue job (Completions is 1 or nil and Parallelism >=0)
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// work queue jobs should have replicas equal to Parallelism regardless in case of no Succeeded
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func isWorkQueueJob(job *batchv1.Job) bool {
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return (job.Spec.Completions == nil || *(job.Spec.Completions) == 1) && job.Spec.Parallelism != nil && *(job.Spec.Parallelism) >= 0
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}
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