mirror of
https://github.com/ceph/ceph-csi.git
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96 lines
2.9 KiB
Go
96 lines
2.9 KiB
Go
/*
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Copyright 2017 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 options
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import (
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"fmt"
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"github.com/spf13/pflag"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/apiserver/pkg/server"
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utilflowcontrol "k8s.io/apiserver/pkg/util/flowcontrol"
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"k8s.io/client-go/informers"
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"k8s.io/client-go/kubernetes"
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)
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type FeatureOptions struct {
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EnableProfiling bool
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DebugSocketPath string
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EnableContentionProfiling bool
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EnablePriorityAndFairness bool
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}
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func NewFeatureOptions() *FeatureOptions {
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defaults := server.NewConfig(serializer.CodecFactory{})
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return &FeatureOptions{
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EnableProfiling: defaults.EnableProfiling,
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DebugSocketPath: defaults.DebugSocketPath,
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EnableContentionProfiling: defaults.EnableContentionProfiling,
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EnablePriorityAndFairness: true,
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}
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}
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func (o *FeatureOptions) AddFlags(fs *pflag.FlagSet) {
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if o == nil {
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return
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}
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fs.BoolVar(&o.EnableProfiling, "profiling", o.EnableProfiling,
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"Enable profiling via web interface host:port/debug/pprof/")
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fs.BoolVar(&o.EnableContentionProfiling, "contention-profiling", o.EnableContentionProfiling,
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"Enable block profiling, if profiling is enabled")
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fs.StringVar(&o.DebugSocketPath, "debug-socket-path", o.DebugSocketPath,
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"Use an unprotected (no authn/authz) unix-domain socket for profiling with the given path")
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fs.BoolVar(&o.EnablePriorityAndFairness, "enable-priority-and-fairness", o.EnablePriorityAndFairness, ""+
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"If true, replace the max-in-flight handler with an enhanced one that queues and dispatches with priority and fairness")
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}
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func (o *FeatureOptions) ApplyTo(c *server.Config, clientset kubernetes.Interface, informers informers.SharedInformerFactory) error {
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if o == nil {
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return nil
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}
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c.EnableProfiling = o.EnableProfiling
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c.DebugSocketPath = o.DebugSocketPath
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c.EnableContentionProfiling = o.EnableContentionProfiling
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if o.EnablePriorityAndFairness {
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if c.MaxRequestsInFlight+c.MaxMutatingRequestsInFlight <= 0 {
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return fmt.Errorf("invalid configuration: MaxRequestsInFlight=%d and MaxMutatingRequestsInFlight=%d; they must add up to something positive", c.MaxRequestsInFlight, c.MaxMutatingRequestsInFlight)
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}
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c.FlowControl = utilflowcontrol.New(
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informers,
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clientset.FlowcontrolV1(),
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c.MaxRequestsInFlight+c.MaxMutatingRequestsInFlight,
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)
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}
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return nil
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}
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func (o *FeatureOptions) Validate() []error {
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if o == nil {
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return nil
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}
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errs := []error{}
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return errs
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}
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