Implement Alibaba Cloud OSS gateway support (#5103)

vendor/github.com/aliyun/aliyun-oss-go-sdk/oss/error.go

@@ -0,0 +1,89 @@
+package oss
+
+import (
+	"encoding/xml"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// ServiceError contains fields of the error response from Oss Service REST API.
+type ServiceError struct {
+	XMLName    xml.Name `xml:"Error"`
+	Code       string   `xml:"Code"`      // OSS返回给用户的错误码
+	Message    string   `xml:"Message"`   // OSS给出的详细错误信息
+	RequestID  string   `xml:"RequestId"` // 用于唯一标识该次请求的UUID
+	HostID     string   `xml:"HostId"`    // 用于标识访问的OSS集群
+	RawMessage string   // OSS返回的原始消息内容
+	StatusCode int      // HTTP状态码
+}
+
+// Implement interface error
+func (e ServiceError) Error() string {
+	return fmt.Sprintf("oss: service returned error: StatusCode=%d, ErrorCode=%s, ErrorMessage=%s, RequestId=%s",
+		e.StatusCode, e.Code, e.Message, e.RequestID)
+}
+
+// UnexpectedStatusCodeError is returned when a storage service responds with neither an error
+// nor with an HTTP status code indicating success.
+type UnexpectedStatusCodeError struct {
+	allowed []int // 预期OSS返回HTTP状态码
+	got     int   // OSS实际返回HTTP状态码
+}
+
+// Implement interface error
+func (e UnexpectedStatusCodeError) Error() string {
+	s := func(i int) string { return fmt.Sprintf("%d %s", i, http.StatusText(i)) }
+
+	got := s(e.got)
+	expected := []string{}
+	for _, v := range e.allowed {
+		expected = append(expected, s(v))
+	}
+	return fmt.Sprintf("oss: status code from service response is %s; was expecting %s",
+		got, strings.Join(expected, " or "))
+}
+
+// Got is the actual status code returned by oss.
+func (e UnexpectedStatusCodeError) Got() int {
+	return e.got
+}
+
+// checkRespCode returns UnexpectedStatusError if the given response code is not
+// one of the allowed status codes; otherwise nil.
+func checkRespCode(respCode int, allowed []int) error {
+	for _, v := range allowed {
+		if respCode == v {
+			return nil
+		}
+	}
+	return UnexpectedStatusCodeError{allowed, respCode}
+}
+
+// CRCCheckError is returned when crc check is inconsistent between client and server
+type CRCCheckError struct {
+	clientCRC uint64 // 客户端计算的CRC64值
+	serverCRC uint64 // 服务端计算的CRC64值
+	operation string // 上传操作，如PutObject/AppendObject/UploadPart等
+	requestID string // 本次操作的RequestID
+}
+
+// Implement interface error
+func (e CRCCheckError) Error() string {
+	return fmt.Sprintf("oss: the crc of %s is inconsistent, client %d but server %d; request id is %s",
+		e.operation, e.clientCRC, e.serverCRC, e.requestID)
+}
+
+func checkDownloadCRC(clientCRC, serverCRC uint64) error {
+	if clientCRC == serverCRC {
+		return nil
+	}
+	return CRCCheckError{clientCRC, serverCRC, "DownloadFile", ""}
+}
+
+func checkCRC(resp *Response, operation string) error {
+	if resp.Headers.Get(HTTPHeaderOssCRC64) == "" || resp.ClientCRC == resp.ServerCRC {
+		return nil
+	}
+	return CRCCheckError{resp.ClientCRC, resp.ServerCRC, operation, resp.Headers.Get(HTTPHeaderOssRequestID)}
+}