feat: listener configuration

shoriwe · May 22, 2023 · c5c1bd1 · c5c1bd1
1 parent eef4081
commit c5c1bd1
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Showing 2 changed files with 78 additions and 0 deletions.
diff --git a/config/listener.go b/config/listener.go
@@ -0,0 +1,28 @@
+package config
+
+import (
+	"crypto/tls"
+	"net"
+)
+
+type Listener struct {
+	Network string `yaml:"network"`
+	Address string `yaml:"address"`
+	TLS     *TLS   `yaml:"tls"`
+}
+
+func (l *Listener) Listen() (net.Listener, error) {
+	ls, lErr := net.Listen(l.Network, l.Address)
+	if lErr != nil {
+		return nil, lErr
+	}
+	if l.TLS == nil {
+		return ls, nil
+	}
+	config, cErr := l.TLS.Config()
+	if cErr != nil {
+		ls.Close()
+		return nil, cErr
+	}
+	return tls.NewListener(ls, config), nil
+}
diff --git a/config/listener_test.go b/config/listener_test.go
@@ -0,0 +1,50 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestListener(t *testing.T) {
+	t.Run("No TLS", func(tt *testing.T) {
+		c := Listener{
+			Network: "tcp",
+			Address: "localhost:0",
+		}
+		l, lErr := c.Listen()
+		assert.Nil(tt, lErr)
+		defer l.Close()
+	})
+	t.Run("With TLS", func(tt *testing.T) {
+		c := Listener{
+			Network: "tcp",
+			Address: "localhost:0",
+			TLS:     &TLS{},
+		}
+		l, lErr := c.Listen()
+		assert.Nil(tt, lErr)
+		defer l.Close()
+	})
+	t.Run("Invalid Addr", func(tt *testing.T) {
+		c := Listener{
+			Network: "tcp",
+			Address: "localhost:9999999",
+			TLS:     &TLS{},
+		}
+		_, lErr := c.Listen()
+		assert.NotNil(tt, lErr)
+	})
+	t.Run("Invalid TLS", func(tt *testing.T) {
+		c := Listener{
+			Network: "tcp",
+			Address: "localhost:0",
+			TLS: &TLS{
+				CertFile: new(string),
+				KeyFile:  new(string),
+			},
+		}
+		_, lErr := c.Listen()
+		assert.NotNil(tt, lErr)
+	})
+}