feat: refactor DNS record functions and improve validation

- Add `dnspod` configuration for `main` and `sub`
- Add an instruction for adding DNS records
- Modify the `CreateOrUpdateRecord` and `DeleteRecord` functions in `dnspod.go` to search for records without specifying the IP address
- Add validation for multiple records in `searchRecord` function
- Log a warning when finding more than one record

Signed-off-by: ysicing <i@ysicing.me>

README.md

@@ -96,20 +96,29 @@ qcloud:
     # 安全组
     securitygroup:
       id: sg-xxxx
+
+  dnspod:
+    main: "ysicing.net"
+    sub: "*.dev"
 ```
 
 ### 使用
 
 ```bash
 # 创建1台机器, 默认开启公网访问100M按流量计费， 超过1台则默认不分配公网ip(因为我们环境默认nat出去)
-spot new --config  /home/ysicing/.spot.yaml
+spot new --config /home/ysicing/.spot.yaml
 # 列表
-spot list --config  /home/ysicing/.spot.yaml
+spot list --config /home/ysicing/.spot.yaml
 INFO[0000] Using config file: /home/ysicing/.spot.yaml
-创建时间            	Name               	ID          	内网IP     	公网IP        	规格       	类型    	状态
-2022-08-22T13:17:34Z	spot-20220822211647	ins-kysdso6l	10.10.16.39	42.192.202.136	SA2.MEDIUM4	SPOTPAID	RUNNING
+创建时间             Name                ID           内网IP      公网IP         规格        类型     状态
+2022-08-22T13:17:34Z spot-20220822211647 ins-kysdso6l 10.10.16.39 42.192.202.136 SA2.MEDIUM4 SPOTPAID RUNNING
 # 销毁
-spot destroy --config  /home/ysicing/.spot.yaml
+spot destroy --config /home/ysicing/.spot.yaml
 # 销毁全部
-spot destroy --config  /home/ysicing/.spot.yaml --all
+spot destroy --config /home/ysicing/.spot.yaml --all
+# 添加解析记录
+spot dnspod --config /home/ysicing/.spot.yaml
+INFO[0000] Using config file: /home/ysicing/.spot.yaml
+🎉 10.10.16.25
+INFO[0003] create record success *.dev.ysicing.net ---> 106.54.x.x
 ```

cloud/qcloud/dnspod.go

@@ -1,6 +1,8 @@
 package qcloud
 
 import (
+	"errors"
+
 	"github.com/sirupsen/logrus"
 	"github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common"
 	dnspod "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/dnspod/v20210323"
@@ -10,7 +12,7 @@ func (d *Client) CreateOrUpdateRecord(ip string) error {
 	if len(d.domain) == 0 || len(d.sub) == 0 {
 		return nil
 	}
-	recordID, err := d.searchRecord(ip)
+	recordID, err := d.searchRecord()
 	if err != nil {
 		return err
 	}
@@ -24,7 +26,7 @@ func (d *Client) DeleteRecord(ip string) error {
 	if len(d.domain) == 0 || len(d.sub) == 0 {
 		return nil
 	}
-	recordID, err := d.searchRecord(ip)
+	recordID, err := d.searchRecord()
 	if err != nil {
 		return err
 	}
@@ -42,7 +44,7 @@ func (d *Client) DeleteRecord(ip string) error {
 	return nil
 }
 
-func (d *Client) searchRecord(ip string) (*uint64, error) {
+func (d *Client) searchRecord() (*uint64, error) {
 	request := dnspod.NewDescribeRecordListRequest()
 	request.Domain = common.StringPtr(d.domain)
 	request.Subdomain = common.StringPtr(d.sub)
@@ -51,10 +53,15 @@ func (d *Client) searchRecord(ip string) (*uint64, error) {
 	if err != nil {
 		return nil, err
 	}
+	if len(response.Response.RecordList) == 0 {
+		return nil, nil
+	}
+	if len(response.Response.RecordList) > 1 {
+		logrus.Warnf("find more than one record %s.%s", d.sub, d.domain)
+		return nil, errors.New("find more than one record")
+	}
 	for _, record := range response.Response.RecordList {
-		if *record.Value == ip {
-			return record.RecordId, nil
-		}
+		return record.RecordId, nil
 	}
 	return nil, nil
 }