Merge branch 'dev-auto-retry-request-normal' into 'master' (merge request !62)

[合规重试]普通接口请求支持重试策略
请求 COS 添加自动重试和切换域名功能
- 默认重试 3 次, 通过 m_max_retry_times 控制, 首次请求不算在重试次数中(如 0 表示不重试, 1 表示重试 1 次)
- 除 copy 接口外, 其他接口返回 2xx 和 4xx 不重试
- copy 请求, 需要检查请求体, 有 error 则进行重试(不涉及域名切换)
- 301/302/307 响应码需要重试, 如果满足域名切换条件, 首次重试就切换域名
- 5xx 响应码需要重试, 如果满足域名切换条件, 则最后一次重试时切换域名

原来的分块上传下载复制任务的重试逻辑也进行了上述逻辑替换，见 https://git.woa.com/cos-sdk/cos-cpp-sdk-v5/-/merge_requests/60

附: 切换域名条件
- 当前域名匹配 myqcloud.com
- 响应中不含有request id
- 域名切换开关(CosSysConfig::m_retry_change_domain)开启, 默认不开启

=======================================================================================================

Author: zackcao

include/cos_params.h

@@ -51,6 +51,7 @@ const char kReqHeaderDate[] = "Date";
 const char kReqHeaderServer[] = "Server";
 const char kReqHeaderXCosReqId[] = "x-cos-request-id";
 const char kReqHeaderXCosTraceId[] = "x-cos-trace-id";
+const char kReqHeaderXCosSdkRetry[] = "x-cos-sdk-retry";
 
 // Response Header
 const char kRespHeaderLastModified[] = "Last-Modified";

include/op/base_op.h

@@ -2,7 +2,6 @@
 #ifndef COS_CPP_SDK_V5_INCLUDE_OP_BASE_OP_H_
 #define COS_CPP_SDK_V5_INCLUDE_OP_BASE_OP_H_
 
-#include <inttypes.h>
 #include <stdint.h>
 
 #include <map>
@@ -11,6 +10,7 @@
 #include "cos_config.h"
 #include "op/cos_result.h"
 #include "trsf/transfer_handler.h"
+#include "util/base_op_util.h"
 
 namespace qcloud_cos {
 
@@ -22,7 +22,7 @@ class BaseOp {
   /// \brief BaseOp构造函数
   ///
   /// \param cos_conf Cos配置
-  explicit BaseOp(const SharedConfig& cos_conf) : m_config(cos_conf) {}
+  explicit BaseOp(const SharedConfig& cos_conf) : m_config(cos_conf), m_op_util(m_config) {}
 
   BaseOp() {}
 
@@ -51,12 +51,8 @@ class BaseOp {
 
   bool IsDomainSameToHost() const;
 
-  bool UseDefaultDomain() const;
-
   bool IsDefaultHost(const std::string &host) const;
 
-  std::string ChangeHostSuffix(const std::string &host);
-
   /// \brief 封装了cos Service/Bucket/Object 相关接口的通用操作,
   ///        包括签名计算、请求发送、返回内容解析等
   ///
@@ -128,6 +124,28 @@ class BaseOp {
  protected:
   bool CheckConfigValidation() const;
   SharedConfig m_config;
+  BaseOpUtil m_op_util;
+
+private:
+    CosResult NormalRequest(
+      const std::string& host, const std::string& path, const BaseReq& req,
+      const std::map<std::string, std::string>& additional_headers,
+      const std::map<std::string, std::string>& additional_params,
+      const std::string& req_body, bool check_body, BaseResp* resp,
+      const uint32_t &request_retry_num, bool is_ci_req = false);
+
+   CosResult DownloadRequest(const std::string& host, const std::string& path,
+                           const BaseReq& req, BaseResp* resp, std::ostream& os,
+                           const uint32_t &request_retry_num,
+                           const SharedTransferHandler& handler = nullptr);
+
+  CosResult UploadRequest(
+      const std::string& host, const std::string& path, const BaseReq& req,
+      const std::map<std::string, std::string>& additional_headers,
+      const std::map<std::string, std::string>& additional_params,
+      std::istream& is, BaseResp* resp, const uint32_t &request_retry_num, const SharedTransferHandler& handler = nullptr);
+
+  bool NoNeedRetry(const CosResult &result);
 };
 
 }  // namespace qcloud_cos