mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2024-12-14 11:57:51 +00:00
5ad2294c14
Add a counter for total number of node update/sync requests. In practice, this counts the number of gRPC requests received if the gRPC API is in use. If the NodeFeature API is enabled, this counts the requests initiated by the NFD API controller, i.e. updates triggered by changes in NodeFeature or NodeFeatureRule objects plus updates initiated by the controller resync period.
100 lines
2.4 KiB
Go
100 lines
2.4 KiB
Go
/*
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Copyright 2023 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 nfdmaster
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import (
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"sync"
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"k8s.io/client-go/util/workqueue"
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"k8s.io/klog/v2"
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)
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type nodeUpdaterPool struct {
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queue workqueue.RateLimitingInterface
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sync.Mutex
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wg sync.WaitGroup
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nfdMaster *nfdMaster
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}
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func newNodeUpdaterPool(nfdMaster *nfdMaster) *nodeUpdaterPool {
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return &nodeUpdaterPool{
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nfdMaster: nfdMaster,
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wg: sync.WaitGroup{},
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}
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}
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func (u *nodeUpdaterPool) processNodeUpdateRequest(queue workqueue.RateLimitingInterface) bool {
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nodeName, quit := queue.Get()
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if quit {
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return false
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}
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defer queue.Done(nodeName)
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nodeUpdateRequests.Inc()
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if err := u.nfdMaster.nfdAPIUpdateOneNode(nodeName.(string)); err != nil {
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if queue.NumRequeues(nodeName) < 5 {
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klog.InfoS("retrying node update", "nodeName", nodeName)
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queue.AddRateLimited(nodeName)
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return true
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} else {
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klog.ErrorS(err, "failed to update node", "nodeName", nodeName)
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nodeUpdateFailures.Inc()
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}
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}
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queue.Forget(nodeName)
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return true
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}
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func (u *nodeUpdaterPool) runNodeUpdater(queue workqueue.RateLimitingInterface) {
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for u.processNodeUpdateRequest(queue) {
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}
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u.wg.Done()
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}
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func (u *nodeUpdaterPool) start(parallelism int) {
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u.Lock()
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defer u.Unlock()
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if u.queue != nil && !u.queue.ShuttingDown() {
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klog.InfoS("the NFD master node updater pool is already running.")
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return
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}
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klog.InfoS("starting the NFD master node updater pool", "parallelism", parallelism)
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u.queue = workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter())
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for i := 0; i < parallelism; i++ {
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u.wg.Add(1)
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go u.runNodeUpdater(u.queue)
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}
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}
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func (u *nodeUpdaterPool) stop() {
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u.Lock()
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defer u.Unlock()
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if u.queue == nil || u.queue.ShuttingDown() {
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klog.InfoS("the NFD master node updater pool is not running.")
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return
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}
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klog.InfoS("stopping the NFD master node updater pool")
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u.queue.ShutDown()
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u.wg.Wait()
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}
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