with defer

builder.go

@@ -0,0 +1,34 @@
+package curre
+
+import "context"
+
+type FunctionalComponent struct {
+	InitFunc  func(fc *FunctionalComponent, ctx context.Context) error
+	StartFunc func(fc *FunctionalComponent, ctx context.Context) error
+	StopFunc  func(fc *FunctionalComponent, ctx context.Context) error
+}
+
+func NewFunctionalComponent(
+	fc *FunctionalComponent,
+) Component {
+	return fc
+}
+
+func (fc *FunctionalComponent) Init(ctx context.Context) error {
+	if fc.InitFunc != nil {
+		return fc.InitFunc(fc, ctx)
+	}
+	return nil
+}
+func (fc *FunctionalComponent) Start(ctx context.Context) error {
+	if fc.StartFunc != nil {
+		return fc.StartFunc(fc, ctx)
+	}
+	return nil
+}
+func (fc *FunctionalComponent) Stop(ctx context.Context) error {
+	if fc.StopFunc != nil {
+		return fc.StopFunc(fc, ctx)
+	}
+	return nil
+}

closers.go

@@ -2,6 +2,6 @@ package curre
 
 import "context"
 
-type Closer interface {
+type Stopper interface {
-	Close(ctx context.Context) error
+	Stop(ctx context.Context) error
 }

component.go

@@ -3,5 +3,5 @@ package curre
 type Component interface {
 	Initer
 	Starter
-	Closer
+	Stopper
 }

example/app/main.go

@@ -28,6 +28,6 @@ func (hs *httpServer) Start(ctx context.Context) error {
 
 	return nil
 }
-func (hs *httpServer) Close(ctx context.Context) error {
+func (hs *httpServer) Stop(ctx context.Context) error {
 	return nil
 }

manager.go

@@ -30,9 +30,37 @@ func NewManager() *Manager {
 	}
 }
 
-func (m *Manager) RunNonBlocking(ctx context.Context) error {
+type ComponentsAreReady struct {
-	go m.Run(ctx)
+}
 
+func (m *Manager) RunNonBlocking(ctx context.Context, readyChan chan ComponentsAreReady) error {
+	go func() error {
+		defer func(ctx context.Context) {
+			err := m.shutdown(ctx)
+			if err != nil {
+				panic(err)
+			}
+		}(ctx)
+		m.initLifetime()
+		err := m.init(ctx)
+		if err != nil {
+			return err
+		}
+
+		err = m.startBlocking(ctx)
+		if err != nil {
+			return err
+		}
+
+		readyChan <- ComponentsAreReady{}
+
+		err = m.wait(ctx)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	}()
 	return nil
 }
 
@@ -98,6 +126,14 @@ func (m *Manager) start(ctx context.Context) error {
 	return nil
 }
 
+func (m *Manager) startBlocking(ctx context.Context) error {
+	for _, c := range m.components {
+		m.startComponent(ctx, c)
+	}
+
+	return nil
+}
+
 func (m *Manager) startComponent(ctx context.Context, component Component) {
 	defer func() {
 		err := recover()
@@ -139,7 +175,7 @@ func (m *Manager) shutdown(ctx context.Context) error {
 
 	go func(ctx context.Context) {
 		for _, c := range closers {
-			c.Close(ctx)
+			c.Stop(ctx)
 		}
 
 		shutdownChan <- struct{}{}