mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
122 lines
4.0 KiB
Go
122 lines
4.0 KiB
Go
/*
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Copyright 2020 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 profile holds the definition of a scheduling Profile.
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package profile
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import (
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"errors"
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"fmt"
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"github.com/google/go-cmp/cmp"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/client-go/kubernetes/scheme"
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"k8s.io/client-go/tools/events"
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"k8s.io/kubernetes/pkg/scheduler/apis/config"
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"k8s.io/kubernetes/pkg/scheduler/framework"
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frameworkruntime "k8s.io/kubernetes/pkg/scheduler/framework/runtime"
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)
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// RecorderFactory builds an EventRecorder for a given scheduler name.
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type RecorderFactory func(string) events.EventRecorder
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// newProfile builds a Profile for the given configuration.
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func newProfile(cfg config.KubeSchedulerProfile, r frameworkruntime.Registry, recorderFact RecorderFactory,
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opts ...frameworkruntime.Option) (framework.Framework, error) {
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recorder := recorderFact(cfg.SchedulerName)
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opts = append(opts, frameworkruntime.WithEventRecorder(recorder), frameworkruntime.WithProfileName(cfg.SchedulerName))
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fwk, err := frameworkruntime.NewFramework(r, cfg.Plugins, cfg.PluginConfig, opts...)
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if err != nil {
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return nil, err
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}
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return fwk, nil
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}
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// Map holds frameworks indexed by scheduler name.
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type Map map[string]framework.Framework
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// NewMap builds the frameworks given by the configuration, indexed by name.
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func NewMap(cfgs []config.KubeSchedulerProfile, r frameworkruntime.Registry, recorderFact RecorderFactory,
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opts ...frameworkruntime.Option) (Map, error) {
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m := make(Map)
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v := cfgValidator{m: m}
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for _, cfg := range cfgs {
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if err := v.validate(cfg); err != nil {
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return nil, err
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}
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p, err := newProfile(cfg, r, recorderFact, opts...)
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if err != nil {
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return nil, fmt.Errorf("creating profile for scheduler name %s: %v", cfg.SchedulerName, err)
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}
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m[cfg.SchedulerName] = p
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}
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return m, nil
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}
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// HandlesSchedulerName returns whether a profile handles the given scheduler name.
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func (m Map) HandlesSchedulerName(name string) bool {
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_, ok := m[name]
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return ok
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}
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// NewRecorderFactory returns a RecorderFactory for the broadcaster.
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func NewRecorderFactory(b events.EventBroadcaster) RecorderFactory {
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return func(name string) events.EventRecorder {
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return b.NewRecorder(scheme.Scheme, name)
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}
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}
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type cfgValidator struct {
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m Map
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queueSort string
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queueSortArgs runtime.Object
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}
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func (v *cfgValidator) validate(cfg config.KubeSchedulerProfile) error {
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if len(cfg.SchedulerName) == 0 {
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return errors.New("scheduler name is needed")
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}
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if cfg.Plugins == nil {
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return fmt.Errorf("plugins required for profile with scheduler name %q", cfg.SchedulerName)
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}
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if v.m[cfg.SchedulerName] != nil {
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return fmt.Errorf("duplicate profile with scheduler name %q", cfg.SchedulerName)
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}
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if cfg.Plugins.QueueSort == nil || len(cfg.Plugins.QueueSort.Enabled) != 1 {
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return fmt.Errorf("one queue sort plugin required for profile with scheduler name %q", cfg.SchedulerName)
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}
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queueSort := cfg.Plugins.QueueSort.Enabled[0].Name
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var queueSortArgs runtime.Object
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for _, plCfg := range cfg.PluginConfig {
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if plCfg.Name == queueSort {
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queueSortArgs = plCfg.Args
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}
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}
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if len(v.queueSort) == 0 {
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v.queueSort = queueSort
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v.queueSortArgs = queueSortArgs
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return nil
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}
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if v.queueSort != queueSort {
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return fmt.Errorf("different queue sort plugins for profile %q: %q, first: %q", cfg.SchedulerName, queueSort, v.queueSort)
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}
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if !cmp.Equal(v.queueSortArgs, queueSortArgs) {
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return fmt.Errorf("different queue sort plugin args for profile %q", cfg.SchedulerName)
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}
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return nil
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}
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