From fa178d7c26da611e806d7c73e3b4424595ecf392 Mon Sep 17 00:00:00 2001
From: Sergey <smalenkov@anytype.io>
Date: Wed, 21 Jun 2023 13:50:50 +0500
Subject: [PATCH 1/2] Add app.IterateComponents method. This method helps to
 create debugging HTTP handlers in Heart

---
 app/app.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/app/app.go b/app/app.go
index 21f2f52c..2295cdbf 100644
--- a/app/app.go
+++ b/app/app.go
@@ -262,6 +262,14 @@ func (app *App) Start(ctx context.Context) (err error) {
 	return
 }
 
+func (app *App) IterateComponents(fn func(Component)) {
+	app.mu.RLock()
+	defer app.mu.RUnlock()
+	for _, s := range app.components {
+		fn(s)
+	}
+}
+
 func stackAllGoroutines() []byte {
 	buf := make([]byte, 1024)
 	for {

From 4eb2245669887ca51304a72a942eaa22fd5ede31 Mon Sep 17 00:00:00 2001
From: Sergey <smalenkov@anytype.io>
Date: Wed, 21 Jun 2023 17:54:38 +0500
Subject: [PATCH 2/2] IterateComponents: Add test and comment

---
 app/app.go      |  1 +
 app/app_test.go | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/app/app.go b/app/app.go
index 2295cdbf..5aeda7f3 100644
--- a/app/app.go
+++ b/app/app.go
@@ -262,6 +262,7 @@ func (app *App) Start(ctx context.Context) (err error) {
 	return
 }
 
+// IterateComponents iterates over all registered components. It's safe for concurrent use.
 func (app *App) IterateComponents(fn func(Component)) {
 	app.mu.RLock()
 	defer app.mu.RUnlock()
diff --git a/app/app_test.go b/app/app_test.go
index 0c122b24..5882feab 100644
--- a/app/app_test.go
+++ b/app/app_test.go
@@ -55,6 +55,21 @@ func TestAppServiceRegistry(t *testing.T) {
 	})
 }
 
+func TestApp_IterateComponents(t *testing.T) {
+	app := new(App)
+
+	app.Register(newTestService(testTypeRunnable, "c1", nil, nil))
+	app.Register(newTestService(testTypeRunnable, "r1", nil, nil))
+	app.Register(newTestService(testTypeComponent, "s1", nil, nil))
+
+	var got []string
+	app.IterateComponents(func(s Component) {
+		got = append(got, s.Name())
+	})
+
+	assert.ElementsMatch(t, []string{"c1", "r1", "s1"}, got)
+}
+
 func TestAppStart(t *testing.T) {
 	t.Run("SuccessStartStop", func(t *testing.T) {
 		app := new(App)