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feat: use PreFilter instead of Prefilter in the scheduling framework

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This commit is contained in:
draveness 2019-08-23 01:56:28 +08:00
parent 2af52db689
commit f3816fb757
5 changed files with 40 additions and 40 deletions
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6
pkg/scheduler/core/generic_scheduler.go
View File

@ -195,9 +195,9 @@ func (g *genericScheduler) Schedule(pod *v1.Pod, pluginContext *framework.Plugin
}
// Run "prefilter" plugins.
prefilterStatus := g.framework.RunPrefilterPlugins(pluginContext, pod)
if !prefilterStatus.IsSuccess() {
return result, prefilterStatus.AsError()
preFilterStatus := g.framework.RunPreFilterPlugins(pluginContext, pod)
if !preFilterStatus.IsSuccess() {
return result, preFilterStatus.AsError()
}
numNodes := g.cache.NodeTree().NumNodes()

14
pkg/scheduler/framework/v1alpha1/framework.go
View File

@ -39,7 +39,7 @@ type framework struct {
waitingPods *waitingPodsMap
pluginNameToWeightMap map[string]int
queueSortPlugins []QueueSortPlugin
prefilterPlugins []PrefilterPlugin
preFilterPlugins []PreFilterPlugin
filterPlugins []FilterPlugin
postFilterPlugins []PostFilterPlugin
scorePlugins []ScorePlugin
@ -105,11 +105,11 @@ func NewFramework(r Registry, plugins *config.Plugins, args []config.PluginConfi
if plugins.PreFilter != nil {
for _, pf := range plugins.PreFilter.Enabled {
if pg, ok := pluginsMap[pf.Name]; ok {
p, ok := pg.(PrefilterPlugin)
p, ok := pg.(PreFilterPlugin)
if !ok {
return nil, fmt.Errorf("plugin %q does not extend prefilter plugin", pf.Name)
}
f.prefilterPlugins = append(f.prefilterPlugins, p)
f.preFilterPlugins = append(f.preFilterPlugins, p)
} else {
return nil, fmt.Errorf("prefilter plugin %q does not exist", pf.Name)
}
@ -283,14 +283,14 @@ func (f *framework) QueueSortFunc() LessFunc {
return f.queueSortPlugins[0].Less
}
// RunPrefilterPlugins runs the set of configured prefilter plugins. It returns
// RunPreFilterPlugins runs the set of configured PreFilter plugins. It returns
// *Status and its code is set to non-success if any of the plugins returns
// anything but Success. If a non-success status is returned, then the scheduling
// cycle is aborted.
func (f *framework) RunPrefilterPlugins(
func (f *framework) RunPreFilterPlugins(
pc *PluginContext, pod *v1.Pod) *Status {
for _, pl := range f.prefilterPlugins {
status := pl.Prefilter(pc, pod)
for _, pl := range f.preFilterPlugins {
status := pl.PreFilter(pc, pod)
if !status.IsSuccess() {
if status.Code() == Unschedulable {
msg := fmt.Sprintf("rejected by %q at prefilter: %v", pl.Name(), status.Message())

12
pkg/scheduler/framework/v1alpha1/interface.go
View File

@ -152,13 +152,13 @@ type QueueSortPlugin interface {
Less(*PodInfo, *PodInfo) bool
}
// PrefilterPlugin is an interface that must be implemented by "prefilter" plugins.
// PreFilterPlugin is an interface that must be implemented by "prefilter" plugins.
// These plugins are called at the beginning of the scheduling cycle.
type PrefilterPlugin interface {
type PreFilterPlugin interface {
Plugin
// Prefilter is called at the beginning of the scheduling cycle. All prefilter
// PreFilter is called at the beginning of the scheduling cycle. All PreFilter
// plugins must return success or the pod will be rejected.
Prefilter(pc *PluginContext, p *v1.Pod) *Status
PreFilter(pc *PluginContext, p *v1.Pod) *Status
}
// FilterPlugin is an interface for Filter plugins. These plugins are called at the
@ -289,11 +289,11 @@ type Framework interface {
// QueueSortFunc returns the function to sort pods in scheduling queue
QueueSortFunc() LessFunc
// RunPrefilterPlugins runs the set of configured prefilter plugins. It returns
// RunPreFilterPlugins runs the set of configured prefilter plugins. It returns
// *Status and its code is set to non-success if any of the plugins returns
// anything but Success. If a non-success status is returned, then the scheduling
// cycle is aborted.
RunPrefilterPlugins(pc *PluginContext, pod *v1.Pod) *Status
RunPreFilterPlugins(pc *PluginContext, pod *v1.Pod) *Status
// RunFilterPlugins runs the set of configured filter plugins for pod on the
// given host. If any of these plugins returns any status other than "Success",

2
pkg/scheduler/internal/queue/scheduling_queue_test.go
View File

@ -167,7 +167,7 @@ func (*fakeFramework) NodeInfoSnapshot() *internalcache.NodeInfoSnapshot {
return nil
}
func (*fakeFramework) RunPrefilterPlugins(pc *framework.PluginContext, pod *v1.Pod) *framework.Status {
func (*fakeFramework) RunPreFilterPlugins(pc *framework.PluginContext, pod *v1.Pod) *framework.Status {
return nil
}

46
test/integration/scheduler/framework_test.go
View File

@ -31,10 +31,10 @@ import (
framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
)
type PrefilterPlugin struct {
numPrefilterCalled int
failPrefilter bool
rejectPrefilter bool
type PreFilterPlugin struct {
numPreFilterCalled int
failPreFilter bool
rejectPreFilter bool
}
type ScorePlugin struct {
@ -113,7 +113,7 @@ const (
permitPluginName = "permit-plugin"
)
var _ = framework.PrefilterPlugin(&PrefilterPlugin{})
var _ = framework.PreFilterPlugin(&PreFilterPlugin{})
var _ = framework.ScorePlugin(&ScorePlugin{})
var _ = framework.FilterPlugin(&FilterPlugin{})
var _ = framework.ScorePlugin(&ScorePlugin{})
@ -321,27 +321,27 @@ func (pp *PostbindPlugin) reset() {
}
// Name returns name of the plugin.
func (pp *PrefilterPlugin) Name() string {
func (pp *PreFilterPlugin) Name() string {
return prefilterPluginName
}
// Prefilter is a test function that returns (true, nil) or errors for testing.
func (pp *PrefilterPlugin) Prefilter(pc *framework.PluginContext, pod *v1.Pod) *framework.Status {
pp.numPrefilterCalled++
if pp.failPrefilter {
// PreFilter is a test function that returns (true, nil) or errors for testing.
func (pp *PreFilterPlugin) PreFilter(pc *framework.PluginContext, pod *v1.Pod) *framework.Status {
pp.numPreFilterCalled++
if pp.failPreFilter {
return framework.NewStatus(framework.Error, fmt.Sprintf("injecting failure for pod %v", pod.Name))
}
if pp.rejectPrefilter {
if pp.rejectPreFilter {
return framework.NewStatus(framework.Unschedulable, fmt.Sprintf("reject pod %v", pod.Name))
}
return nil
}
// reset used to reset prefilter plugin.
func (pp *PrefilterPlugin) reset() {
pp.numPrefilterCalled = 0
pp.failPrefilter = false
pp.rejectPrefilter = false
func (pp *PreFilterPlugin) reset() {
pp.numPreFilterCalled = 0
pp.failPreFilter = false
pp.rejectPreFilter = false
}
// Name returns name of the plugin.
@ -426,11 +426,11 @@ func newPermitPlugin(permitPlugin *PermitPlugin) framework.PluginFactory {
}
}
// TestPrefilterPlugin tests invocation of prefilter plugins.
func TestPrefilterPlugin(t *testing.T) {
// TestPreFilterPlugin tests invocation of prefilter plugins.
func TestPreFilterPlugin(t *testing.T) {
// Create a plugin registry for testing. Register only a pre-filter plugin.
prefilterPlugin := &PrefilterPlugin{}
registry := framework.Registry{prefilterPluginName: newPlugin(prefilterPlugin)}
preFilterPlugin := &PreFilterPlugin{}
registry := framework.Registry{prefilterPluginName: newPlugin(preFilterPlugin)}
// Setup initial prefilter plugin for testing.
plugins := &schedulerconfig.Plugins{
@ -478,8 +478,8 @@ func TestPrefilterPlugin(t *testing.T) {
}
for i, test := range tests {
prefilterPlugin.failPrefilter = test.fail
prefilterPlugin.rejectPrefilter = test.reject
preFilterPlugin.failPreFilter = test.fail
preFilterPlugin.rejectPreFilter = test.reject
// Create a best effort pod.
pod, err := createPausePod(cs,
initPausePod(cs, &pausePodConfig{Name: "test-pod", Namespace: context.ns.Name}))
@ -497,11 +497,11 @@ func TestPrefilterPlugin(t *testing.T) {
}
}
if prefilterPlugin.numPrefilterCalled == 0 {
if preFilterPlugin.numPreFilterCalled == 0 {
t.Errorf("Expected the prefilter plugin to be called.")
}
prefilterPlugin.reset()
preFilterPlugin.reset()
cleanupPods(cs, t, []*v1.Pod{pod})
}
}