mirror of
https://github.com/vmware-tanzu/velero.git
synced 2025-12-23 06:15:21 +00:00
100 lines
2.5 KiB
Go
100 lines
2.5 KiB
Go
/*
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Copyright the Velero Contributors.
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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 backup
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import (
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"context"
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"sync"
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"github.com/sirupsen/logrus"
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"k8s.io/apimachinery/pkg/runtime/schema"
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)
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type ItemBlockWorkerPool struct {
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inputChannel chan ItemBlockInput
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wg *sync.WaitGroup
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logger logrus.FieldLogger
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cancelFunc context.CancelFunc
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}
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type ItemBlockInput struct {
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itemBlock *BackupItemBlock
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returnChan chan ItemBlockReturn
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}
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type ItemBlockReturn struct {
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itemBlock *BackupItemBlock
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resources []schema.GroupResource
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err error
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}
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func (p *ItemBlockWorkerPool) GetInputChannel() chan ItemBlockInput {
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return p.inputChannel
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}
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func StartItemBlockWorkerPool(ctx context.Context, workers int, log logrus.FieldLogger) *ItemBlockWorkerPool {
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// Buffer will hold up to 10 ItemBlocks waiting for processing
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inputChannel := make(chan ItemBlockInput, max(workers, 10))
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ctx, cancelFunc := context.WithCancel(ctx)
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wg := &sync.WaitGroup{}
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for i := 0; i < workers; i++ {
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logger := log.WithField("worker", i)
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wg.Add(1)
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go processItemBlockWorker(ctx, inputChannel, logger, wg)
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}
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pool := &ItemBlockWorkerPool{
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inputChannel: inputChannel,
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cancelFunc: cancelFunc,
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logger: log,
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wg: wg,
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}
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return pool
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}
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func (p *ItemBlockWorkerPool) Stop() {
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p.cancelFunc()
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p.logger.Info("ItemBlock worker stopping")
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p.wg.Wait()
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p.logger.Info("ItemBlock worker stopped")
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}
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func processItemBlockWorker(ctx context.Context,
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inputChannel chan ItemBlockInput,
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logger logrus.FieldLogger,
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wg *sync.WaitGroup) {
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for {
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select {
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case m := <-inputChannel:
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logger.Infof("processing ItemBlock for backup %v", m.itemBlock.itemBackupper.backupRequest.Name)
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grList := m.itemBlock.itemBackupper.kubernetesBackupper.backupItemBlock(m.itemBlock)
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logger.Infof("finished processing ItemBlock for backup %v", m.itemBlock.itemBackupper.backupRequest.Name)
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m.returnChan <- ItemBlockReturn{
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itemBlock: m.itemBlock,
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resources: grList,
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err: nil,
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}
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case <-ctx.Done():
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logger.Info("stopping ItemBlock worker")
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wg.Done()
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return
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}
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}
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}
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