Wait Group Example - Wait for all Go Routines to Finish before resuming

waitgroup-example.go

	errorChannel := make(chan error)
	var wg sync.WaitGroup

	funcsToRun := []func(ctx context.Context) error {
		implementation.func1,
		implementation.func2,
		implementation.func3,
	}

	wg.Add(len(funcsToRun))

	for _, f := range funcsToRun {
		go func(fn func(ctx context.Context) error) {
			defer wg.Done()
			errorChannel <- fn(ctx)
		}(f)
	}

	go func() {
		for e := range errorChannel {
			if e != nil {
				log.Errorf("Error when running func: %v", e)
			}
		}
	}()

	wg.Wait()

	log.Info("All routines completed, continuing...")