ec83143342
Previously, separate interfaces were defined for Reserve and Unreserve plugins. However, in nearly all cases, a plugin that allocates a resource using Reserve will likely want to register itself for Unreserve as well in order to free the allocated resource at the end of a failed scheduling/binding cycle. Having separate plugins for Reserve and Unreserve also adds unnecessary config toil. To that end, this patch aims to merge the two plugins into a single interface called a ReservePlugin that requires implementing both the Reserve and Unreserve methods.
120 lines
4.9 KiB
Go
120 lines
4.9 KiB
Go
/*
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Copyright 2019 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 testing
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import (
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schedulerapi "k8s.io/kubernetes/pkg/scheduler/apis/config"
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"k8s.io/kubernetes/pkg/scheduler/framework/runtime"
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framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
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)
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// NewFramework creates a Framework from the register functions and options.
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func NewFramework(fns []RegisterPluginFunc, opts ...runtime.Option) (framework.Framework, error) {
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registry := runtime.Registry{}
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plugins := &schedulerapi.Plugins{}
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var pluginConfigs []schedulerapi.PluginConfig
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for _, f := range fns {
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f(®istry, plugins, pluginConfigs)
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}
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return runtime.NewFramework(registry, plugins, pluginConfigs, opts...)
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}
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// RegisterPluginFunc is a function signature used in method RegisterFilterPlugin()
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// to register a Filter Plugin to a given registry.
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type RegisterPluginFunc func(reg *runtime.Registry, plugins *schedulerapi.Plugins, pluginConfigs []schedulerapi.PluginConfig)
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// RegisterQueueSortPlugin returns a function to register a QueueSort Plugin to a given registry.
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func RegisterQueueSortPlugin(pluginName string, pluginNewFunc runtime.PluginFactory) RegisterPluginFunc {
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return RegisterPluginAsExtensions(pluginName, pluginNewFunc, "QueueSort")
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}
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// RegisterFilterPlugin returns a function to register a Filter Plugin to a given registry.
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func RegisterFilterPlugin(pluginName string, pluginNewFunc runtime.PluginFactory) RegisterPluginFunc {
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return RegisterPluginAsExtensions(pluginName, pluginNewFunc, "Filter")
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}
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// RegisterScorePlugin returns a function to register a Score Plugin to a given registry.
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func RegisterScorePlugin(pluginName string, pluginNewFunc runtime.PluginFactory, weight int32) RegisterPluginFunc {
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return RegisterPluginAsExtensionsWithWeight(pluginName, weight, pluginNewFunc, "Score")
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}
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// RegisterPreScorePlugin returns a function to register a Score Plugin to a given registry.
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func RegisterPreScorePlugin(pluginName string, pluginNewFunc runtime.PluginFactory) RegisterPluginFunc {
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return RegisterPluginAsExtensions(pluginName, pluginNewFunc, "PreScore")
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}
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// RegisterBindPlugin returns a function to register a Bind Plugin to a given registry.
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func RegisterBindPlugin(pluginName string, pluginNewFunc runtime.PluginFactory) RegisterPluginFunc {
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return RegisterPluginAsExtensions(pluginName, pluginNewFunc, "Bind")
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}
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// RegisterPluginAsExtensions returns a function to register a Plugin as given extensionPoints to a given registry.
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func RegisterPluginAsExtensions(pluginName string, pluginNewFunc runtime.PluginFactory, extensions ...string) RegisterPluginFunc {
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return RegisterPluginAsExtensionsWithWeight(pluginName, 1, pluginNewFunc, extensions...)
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}
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// RegisterPluginAsExtensionsWithWeight returns a function to register a Plugin as given extensionPoints with weight to a given registry.
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func RegisterPluginAsExtensionsWithWeight(pluginName string, weight int32, pluginNewFunc runtime.PluginFactory, extensions ...string) RegisterPluginFunc {
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return func(reg *runtime.Registry, plugins *schedulerapi.Plugins, pluginConfigs []schedulerapi.PluginConfig) {
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reg.Register(pluginName, pluginNewFunc)
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for _, extension := range extensions {
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ps := getPluginSetByExtension(plugins, extension)
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if ps == nil {
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continue
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}
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ps.Enabled = append(ps.Enabled, schedulerapi.Plugin{Name: pluginName, Weight: weight})
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}
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//lint:ignore SA4006 this value of pluginConfigs is never used.
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//lint:ignore SA4010 this result of append is never used.
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pluginConfigs = append(pluginConfigs, schedulerapi.PluginConfig{Name: pluginName})
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}
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}
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func getPluginSetByExtension(plugins *schedulerapi.Plugins, extension string) *schedulerapi.PluginSet {
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switch extension {
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case "QueueSort":
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return initializeIfNeeded(&plugins.QueueSort)
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case "Filter":
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return initializeIfNeeded(&plugins.Filter)
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case "PreFilter":
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return initializeIfNeeded(&plugins.PreFilter)
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case "PreScore":
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return initializeIfNeeded(&plugins.PreScore)
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case "Score":
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return initializeIfNeeded(&plugins.Score)
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case "Bind":
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return initializeIfNeeded(&plugins.Bind)
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case "Reserve":
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return initializeIfNeeded(&plugins.Reserve)
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case "Permit":
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return initializeIfNeeded(&plugins.Permit)
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case "PreBind":
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return initializeIfNeeded(&plugins.PreBind)
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case "PostBind":
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return initializeIfNeeded(&plugins.PostBind)
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default:
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return nil
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}
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}
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func initializeIfNeeded(s **schedulerapi.PluginSet) *schedulerapi.PluginSet {
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if *s == nil {
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*s = &schedulerapi.PluginSet{}
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}
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return *s
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}
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