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Scheduler extension

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This commit is contained in:
Ravi Gadde
2015-09-03 23:50:14 -07:00
parent ef84c57965
commit cadc24e9fd
20 changed files with 1278 additions and 138 deletions
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17
plugin/pkg/scheduler/algorithm/scheduler_interface.go
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@@ -18,9 +18,24 @@ package algorithm
import (
"k8s.io/kubernetes/pkg/api"
schedulerapi "k8s.io/kubernetes/plugin/pkg/scheduler/api"
)
// Scheduler is an interface implemented by things that know how to schedule pods
// SchedulerExtender is an interface for external processes to influence scheduling
// decisions made by Kubernetes. This is typically needed for resources not directly
// managed by Kubernetes.
type SchedulerExtender interface {
// Filter based on extender-implemented predicate functions. The filtered list is
// expected to be a subset of the supplied list.
Filter(pod *api.Pod, nodes *api.NodeList) (filteredNodes *api.NodeList, err error)
// Prioritize based on extender-implemented priority functions. The returned scores & weight
// are used to compute the weighted score for an extender. The weighted scores are added to
// the scores computed by Kubernetes scheduler. The total scores are used to do the host selection.
Prioritize(pod *api.Pod, nodes *api.NodeList) (hostPriorities *schedulerapi.HostPriorityList, weight int, err error)
}
// ScheduleAlgorithm is an interface implemented by things that know how to schedule pods
// onto machines.
type ScheduleAlgorithm interface {
Schedule(*api.Pod, NodeLister) (selectedMachine string, err error)