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Switch scheduler to use generated listers/informers

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Where possible, switch the scheduler to use generated listers and
informers. There are still some places where it probably makes more
sense to use one-off reflectors/informers (listing/watching just a
single node, listing/watching scheduled & unscheduled pods using a field
selector).
This commit is contained in:
Andy Goldstein
2017-02-21 15:00:57 -05:00
parent bb7cc74069
commit 9d8d6ad16c
24 changed files with 417 additions and 221 deletions
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28
plugin/pkg/scheduler/algorithm/predicates/predicates.go
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@@ -25,12 +25,13 @@ import (
"time"
"github.com/golang/glog"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/client-go/util/workqueue"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/client/legacylisters"
corelisters "k8s.io/kubernetes/pkg/client/listers/core/v1"
"k8s.io/kubernetes/pkg/kubelet/qos"
"k8s.io/kubernetes/plugin/pkg/scheduler/algorithm"
priorityutil "k8s.io/kubernetes/plugin/pkg/scheduler/algorithm/priorities/util"
@@ -58,13 +59,22 @@ type PersistentVolumeInfo interface {
GetPersistentVolumeInfo(pvID string) (*v1.PersistentVolume, error)
}
// CachedPersistentVolumeInfo implements PersistentVolumeInfo
type CachedPersistentVolumeInfo struct {
corelisters.PersistentVolumeLister
}
func (c *CachedPersistentVolumeInfo) GetPersistentVolumeInfo(pvID string) (*v1.PersistentVolume, error) {
return c.Get(pvID)
}
type PersistentVolumeClaimInfo interface {
GetPersistentVolumeClaimInfo(namespace string, name string) (*v1.PersistentVolumeClaim, error)
}
// CachedPersistentVolumeClaimInfo implements PersistentVolumeClaimInfo
type CachedPersistentVolumeClaimInfo struct {
*listers.StoreToPersistentVolumeClaimLister
corelisters.PersistentVolumeClaimLister
}
// GetPersistentVolumeClaimInfo fetches the claim in specified namespace with specified name
@@ -73,22 +83,22 @@ func (c *CachedPersistentVolumeClaimInfo) GetPersistentVolumeClaimInfo(namespace
}
type CachedNodeInfo struct {
*listers.StoreToNodeLister
corelisters.NodeLister
}
// GetNodeInfo returns cached data for the node 'id'.
func (c *CachedNodeInfo) GetNodeInfo(id string) (*v1.Node, error) {
node, exists, err := c.Get(&v1.Node{ObjectMeta: metav1.ObjectMeta{Name: id}})
node, err := c.Get(id)
if apierrors.IsNotFound(err) {
return nil, fmt.Errorf("node '%v' not found", id)
}
if err != nil {
return nil, fmt.Errorf("error retrieving node '%v' from cache: %v", id, err)
}
if !exists {
return nil, fmt.Errorf("node '%v' not found", id)
}
return node.(*v1.Node), nil
return node, nil
}
// Note that predicateMetadata and matchingPodAntiAffinityTerm need to be declared in the same file