feat: get dialer name

pkg/app/client/client.go

@@ -45,6 +45,8 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"reflect"
+	"strings"
 	"sync"
 	"time"
 
@@ -532,6 +534,30 @@ func (c *Client) SetClientFactory(cf suite.ClientFactory) {
 	c.clientFactory = cf
 }
 
+// GetDialerName returns the name of the dialer
+func (c *Client) GetDialerName() (dName string, err error) {
+	defer func() {
+		err := recover()
+		if err != nil {
+			dName = "unknown"
+		}
+	}()
+
+	opt := c.GetOptions()
+	if opt == nil || opt.Dialer == nil {
+		return "", fmt.Errorf("abnormal process: there is no client options or dialer")
+	}
+
+	dName = reflect.TypeOf(opt.Dialer).String()
+	dSlice := strings.Split(dName, ".")
+	dName = dSlice[0]
+	if dName[0] == '*' {
+		dName = dName[1:]
+	}
+
+	return
+}
+
 // NewClient return a client with options
 func NewClient(opts ...config.ClientOption) (*Client, error) {
 	opt := config.NewClientOptions(opts)

pkg/app/client/client_test.go

@@ -1879,3 +1879,52 @@ func newMockDialerWithCustomFunc(network, address string, timeout time.Duration,
 		timeout:          timeout,
 	}
 }
+
+func TestClientDialerName(t *testing.T) {
+	client, _ := NewClient()
+	dName, err := client.GetDialerName()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	// Depending on the operating system,
+	// the default dialer has a different network library, either "netpoll" or "standard"
+	if !(dName == "netpoll" || dName == "standard") {
+		t.Errorf("expected 'netpoll', but get %s", dName)
+	}
+
+	client, _ = NewClient(WithDialer(netpoll.NewDialer()))
+	dName, err = client.GetDialerName()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if dName != "netpoll" {
+		t.Errorf("expected 'standard', but get %s", dName)
+	}
+
+	client, _ = NewClient(WithDialer(standard.NewDialer()))
+	dName, err = client.GetDialerName()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if dName != "standard" {
+		t.Errorf("expected 'standard', but get %s", dName)
+	}
+
+	client, _ = NewClient(WithDialer(&mockDialer{}))
+	dName, err = client.GetDialerName()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if dName != "client" {
+		t.Errorf("expected 'client', but get %s", dName)
+	}
+
+	client.options.Dialer = nil
+	dName, err = client.GetDialerName()
+	if err == nil {
+		t.Errorf("expected an err for abnormal process")
+	}
+	if dName != "" {
+		t.Errorf("expected 'empty string', but get %s", dName)
+	}
+}