chore: move '/internal/pkg' to '/pkg'

pkg/sdk3rd/ctyun/openapi/client.go

@@ -0,0 +1,165 @@
+package openapi
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/go-resty/resty/v2"
+	"github.com/google/uuid"
+)
+
+type Client struct {
+	client *resty.Client
+}
+
+func NewClient(endpoint, accessKeyId, secretAccessKey string) (*Client, error) {
+	if endpoint == "" {
+		return nil, fmt.Errorf("sdkerr: unset endpoint")
+	}
+	if _, err := url.Parse(endpoint); err != nil {
+		return nil, fmt.Errorf("sdkerr: invalid endpoint: %w", err)
+	}
+	if accessKeyId == "" {
+		return nil, fmt.Errorf("sdkerr: unset accessKeyId")
+	}
+	if secretAccessKey == "" {
+		return nil, fmt.Errorf("sdkerr: unset secretAccessKey")
+	}
+
+	client := resty.New().
+		SetBaseURL(endpoint).
+		SetHeader("Accept", "application/json").
+		SetHeader("Content-Type", "application/json").
+		SetHeader("User-Agent", "certimate").
+		SetPreRequestHook(func(c *resty.Client, req *http.Request) error {
+			// 生成时间戳及流水号
+			now := time.Now()
+			eopDate := now.Format("20060102T150405Z")
+			eopReqId := uuid.New().String()
+
+			// 获取查询参数
+			queryStr := ""
+			if req.URL != nil {
+				queryStr = req.URL.Query().Encode()
+			}
+
+			// 获取请求正文
+			payloadStr := ""
+			if req.Body != nil {
+				reader, err := req.GetBody()
+				if err != nil {
+					return err
+				}
+
+				defer reader.Close()
+				payload, err := io.ReadAll(reader)
+				if err != nil {
+					return err
+				}
+
+				payloadStr = string(payload)
+			}
+
+			// 构造代签字符串
+			payloadHash := sha256.Sum256([]byte(payloadStr))
+			payloadHashHex := hex.EncodeToString(payloadHash[:])
+			dataToSign := fmt.Sprintf("ctyun-eop-request-id:%s\neop-date:%s\n\n%s\n%s", eopReqId, eopDate, queryStr, payloadHashHex)
+
+			// 生成 ktime
+			hasher := hmac.New(sha256.New, []byte(secretAccessKey))
+			hasher.Write([]byte(eopDate))
+			ktime := hasher.Sum(nil)
+
+			// 生成 kak
+			hasher = hmac.New(sha256.New, ktime)
+			hasher.Write([]byte(accessKeyId))
+			kak := hasher.Sum(nil)
+
+			// 生成 kdate
+			hasher = hmac.New(sha256.New, kak)
+			hasher.Write([]byte(now.Format("20060102")))
+			kdate := hasher.Sum(nil)
+
+			// 构造签名
+			hasher = hmac.New(sha256.New, kdate)
+			hasher.Write([]byte(dataToSign))
+			sign := hasher.Sum(nil)
+			signStr := base64.StdEncoding.EncodeToString(sign)
+
+			// 设置请求头
+			req.Header.Set("ctyun-eop-request-id", eopReqId)
+			req.Header.Set("eop-date", eopDate)
+			req.Header.Set("eop-authorization", fmt.Sprintf("%s Headers=ctyun-eop-request-id;eop-date Signature=%s", accessKeyId, signStr))
+
+			return nil
+		})
+
+	return &Client{client}, nil
+}
+
+func (c *Client) SetTimeout(timeout time.Duration) *Client {
+	c.client.SetTimeout(timeout)
+	return c
+}
+
+func (c *Client) NewRequest(method string, path string) (*resty.Request, error) {
+	if method == "" {
+		return nil, fmt.Errorf("sdkerr: unset method")
+	}
+	if path == "" {
+		return nil, fmt.Errorf("sdkerr: unset path")
+	}
+
+	req := c.client.R()
+	req.Method = method
+	req.URL = path
+	return req, nil
+}
+
+func (c *Client) DoRequest(req *resty.Request) (*resty.Response, error) {
+	if req == nil {
+		return nil, fmt.Errorf("sdkerr: nil request")
+	}
+
+	// WARN:
+	//   PLEASE DO NOT USE `req.SetResult` or `req.SetError` HERE! USE `doRequestWithResult` INSTEAD.
+
+	resp, err := req.Send()
+	if err != nil {
+		return resp, fmt.Errorf("sdkerr: failed to send request: %w", err)
+	} else if resp.IsError() {
+		return resp, fmt.Errorf("sdkerr: unexpected status code: %d, resp: %s", resp.StatusCode(), resp.String())
+	}
+
+	return resp, nil
+}
+
+func (c *Client) DoRequestWithResult(req *resty.Request, res any) (*resty.Response, error) {
+	if req == nil {
+		return nil, fmt.Errorf("sdkerr: nil request")
+	}
+
+	resp, err := c.DoRequest(req)
+	if err != nil {
+		if resp != nil {
+			json.Unmarshal(resp.Body(), &res)
+		}
+		return resp, err
+	}
+
+	if len(resp.Body()) != 0 {
+		if err := json.Unmarshal(resp.Body(), &res); err != nil {
+			return resp, fmt.Errorf("sdkerr: failed to unmarshal response: %w", err)
+		}
+	}
+
+	return resp, nil
+}