From 1d6fa60b3c60d068d12b19f10f5ad73e836b5a70 Mon Sep 17 00:00:00 2001
From: Gabriel Arakaki Giovanini <mail@gabrielgio.me>
Date: Sat, 24 Jun 2023 00:00:00 +0200
Subject: feat: Add scheduler again

Since I have fixed the issue with the `SIGTINT` hanging the application
I can readd the scheduler once more.

Also move the param for amount of scheduler work.
---
 pkg/coroutines/coroutines.go |  1 +
 pkg/worker/list_processor.go | 23 ++++++++++++++---------
 pkg/worker/scheduler.go      | 12 +-----------
 3 files changed, 16 insertions(+), 20 deletions(-)
 create mode 100644 pkg/coroutines/coroutines.go

(limited to 'pkg')

diff --git a/pkg/coroutines/coroutines.go b/pkg/coroutines/coroutines.go
new file mode 100644
index 0000000..c0f7247
--- /dev/null
+++ b/pkg/coroutines/coroutines.go
@@ -0,0 +1 @@
+package coroutines
diff --git a/pkg/worker/list_processor.go b/pkg/worker/list_processor.go
index d53b7ea..8169e4e 100644
--- a/pkg/worker/list_processor.go
+++ b/pkg/worker/list_processor.go
@@ -2,6 +2,8 @@ package worker
 
 import (
 	"context"
+	"errors"
+	"sync"
 )
 
 type (
@@ -64,18 +66,21 @@ func (l *listProcessorWorker[T]) Start(ctx context.Context) error {
 		if len(values) == 0 {
 			return nil
 		}
+		var wg sync.WaitGroup
 
 		for _, v := range values {
-			select {
-			case <-ctx.Done():
-				return ctx.Err()
-			default:
-			}
-
-			if err := l.listProcessor.Process(ctx, v); err != nil {
-				return err
-			}
+			wg.Add(1)
+			l.scheduler.Take()
+			go func(v T) {
+				defer l.scheduler.Return()
+				defer wg.Done()
+				if err := l.listProcessor.Process(ctx, v); err != nil && !errors.Is(err, context.Canceled) {
+					println("Err", err.Error())
+				}
+			}(v)
 		}
+
+		wg.Wait()
 	}
 }
 
diff --git a/pkg/worker/scheduler.go b/pkg/worker/scheduler.go
index b410b33..2ce86fe 100644
--- a/pkg/worker/scheduler.go
+++ b/pkg/worker/scheduler.go
@@ -1,13 +1,7 @@
 package worker
 
-import (
-	"fmt"
-	"sync/atomic"
-)
-
 type Scheduler struct {
-	pool  chan any
-	count atomic.Int64
+	pool chan any
 }
 
 func NewScheduler(count uint) *Scheduler {
@@ -18,12 +12,8 @@ func NewScheduler(count uint) *Scheduler {
 
 func (self *Scheduler) Take() {
 	self.pool <- nil
-	self.count.Add(1)
-	fmt.Printf("<- %d\n", self.count.Load())
 }
 
 func (self *Scheduler) Return() {
 	<-self.pool
-	self.count.Add(-1)
-	fmt.Printf("-> %d\n", self.count.Load())
 }
-- 
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