feat: mcp server sdk (#4794)

Signed-off-by: kevin <wanjunfeng@gmail.com>

mcp/util_test.go

@@ -0,0 +1,63 @@
+package mcp
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPtr(t *testing.T) {
+	tests := []struct {
+		name string
+		v    interface{}
+	}{
+		{"string", "test"},
+		{"int", 42},
+		{"bool", true},
+		{"float", 3.14},
+		{"struct", struct{ Name string }{"test"}},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := ptr(tt.v)
+			assert.NotNil(t, got, "ptr() should not return nil")
+			assert.Equal(t, tt.v, *got, "dereferenced pointer should equal input value")
+		})
+	}
+}
+
+type Event struct {
+	Type string
+	Data map[string]any
+}
+
+func parseEvent(input string) (*Event, error) {
+	var evt Event
+	var dataStr string
+
+	scanner := bufio.NewScanner(strings.NewReader(input))
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "event:") {
+			evt.Type = strings.TrimSpace(strings.TrimPrefix(line, "event:"))
+		} else if strings.HasPrefix(line, "data:") {
+			dataStr = strings.TrimSpace(strings.TrimPrefix(line, "data:"))
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	if len(dataStr) > 0 {
+		if err := json.Unmarshal([]byte(dataStr), &evt.Data); err != nil {
+			return nil, fmt.Errorf("failed to parse data: %w", err)
+		}
+	}
+
+	return &evt, nil
+}