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package worker
import (
"context"
"errors"
"fmt"
"sync"
)
type (
// Worker should watch for context
Worker interface {
Start(context.Context) error
}
Work struct {
Name string
Worker Worker
}
WorkerPool struct {
workers []*Work
wg sync.WaitGroup
}
)
func NewWorkerPool() *WorkerPool {
return &WorkerPool{}
}
func (self *WorkerPool) AddWorker(name string, worker Worker) {
self.workers = append(self.workers, &Work{
Name: name,
Worker: worker,
})
}
func (self *WorkerPool) Start(ctx context.Context) {
self.wg.Add(len(self.workers))
for _, w := range self.workers {
go func(w *Work) {
defer self.wg.Done()
if err := w.Worker.Start(ctx); err != nil && !errors.Is(err, context.Canceled) {
fmt.Println("Processes finished, error", w.Name, err.Error())
} else {
fmt.Println(w.Name, "done")
}
}(w)
}
}
func (self *WorkerPool) Wait() {
self.wg.Wait()
}
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