chore: add integer's symbol in parseFields method to enhance performance

Signed-off-by: PennyYoon <525296438@qq.com>

opengemini/point.go

@@ -131,7 +131,7 @@ func parseFields(fields map[string]interface{}) string {
 		case string:
 			builder.WriteString("\"" + v + "\"")
 		case int8, uint8, int16, uint16, int, uint, int32, uint32, int64, uint64:
-			builder.WriteString(fmt.Sprintf("%d", v))
+			builder.WriteString(fmt.Sprintf("%di", v))
 		case float32, float64:
 			builder.WriteString(fmt.Sprintf("%f", v))
 		case bool:

opengemini/write_test.go

@@ -1,7 +1,10 @@
 package opengemini
 
 import (
+	"fmt"
 	"github.com/stretchr/testify/assert"
+	"reflect"
+	"strings"
 	"testing"
 	"time"
 )
@@ -85,3 +88,45 @@ func TestClientWritePoint(t *testing.T) {
 	err = c.WritePoint(database, point, callback)
 	assert.Nil(t, err)
 }
+
+func TestWriteAssignedIntegerField(t *testing.T) {
+	c := testDefaultClient(t)
+
+	// create a test database with rand suffix
+	database := randomDatabaseName()
+	err := c.CreateDatabase(database)
+	assert.Nil(t, err)
+
+	// delete test database before exit test case
+	defer func() {
+		err := c.DropDatabase(database)
+		assert.Nil(t, err)
+	}()
+
+	callback := func(err error) {
+		assert.Nil(t, err)
+	}
+	measurement := randomMeasurement()
+	point := &Point{}
+	point.Measurement = measurement
+	point.AddTag("tag", "test")
+	point.AddField("field", 123)
+	err = c.WritePoint(database, point, callback)
+	assert.Nil(t, err)
+
+	time.Sleep(time.Second * 5)
+
+	// check field's data type
+	res, err := c.ShowFieldKeys(database, fmt.Sprintf("SHOW FIELD KEYS FROM %s", measurement))
+	assert.Nil(t, err)
+	values := res[0].Values
+	if value, ok := values[0].(string); !ok {
+		t.Log(reflect.TypeOf(value))
+		t.Fail()
+	} else {
+		if !strings.Contains(value, "integer") {
+			t.Error("not contain integer")
+			t.Fail()
+		}
+	}
+}