67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
/*
|
|
Copyright 2023 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package flowcontrol
|
|
|
|
import (
|
|
"sync"
|
|
)
|
|
|
|
// MaxSeatsTracker is used to track max seats allocatable per priority level from the work estimator
|
|
type MaxSeatsTracker interface {
|
|
// GetMaxSeats returns the maximum seats a request should occupy for a given priority level.
|
|
GetMaxSeats(priorityLevelName string) uint64
|
|
|
|
// SetMaxSeats configures max seats for a priority level.
|
|
SetMaxSeats(priorityLevelName string, maxSeats uint64)
|
|
|
|
// ForgetPriorityLevel removes max seats tracking for a priority level.
|
|
ForgetPriorityLevel(priorityLevelName string)
|
|
}
|
|
|
|
type maxSeatsTracker struct {
|
|
sync.RWMutex
|
|
|
|
maxSeats map[string]uint64
|
|
}
|
|
|
|
func NewMaxSeatsTracker() MaxSeatsTracker {
|
|
return &maxSeatsTracker{
|
|
maxSeats: make(map[string]uint64),
|
|
}
|
|
}
|
|
|
|
func (m *maxSeatsTracker) GetMaxSeats(plName string) uint64 {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
|
|
return m.maxSeats[plName]
|
|
}
|
|
|
|
func (m *maxSeatsTracker) SetMaxSeats(plName string, maxSeats uint64) {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
|
|
m.maxSeats[plName] = maxSeats
|
|
}
|
|
|
|
func (m *maxSeatsTracker) ForgetPriorityLevel(plName string) {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
|
|
delete(m.maxSeats, plName)
|
|
}
|