first to commit project

error.go

@@ -0,0 +1,49 @@
+package cos
+
+import (
+	"encoding/xml"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+// ErrorResponse 包含 API 返回的错误信息
+//
+// https://www.qcloud.com/document/product/436/7730
+type ErrorResponse struct {
+	XMLName   xml.Name       `xml:"Error"`
+	Response  *http.Response `xml:"-"`
+	Code      string
+	Message   string
+	Resource  string
+	RequestID string `header:"x-cos-request-id,omitempty" url:"-" xml:"-"`
+	TraceID   string `xml:"TraceId,omitempty"`
+}
+
+// Error ...
+func (r *ErrorResponse) Error() string {
+	RequestID := r.RequestID
+	if (RequestID == "") {
+		RequestID = r.Response.Header["X-Cos-Request-Id"][0]
+	}
+	TraceID := r.TraceID
+	if (TraceID == "") {
+		TraceID = r.Response.Header["X-Cos-Trace-Id"][0]
+	}
+	return fmt.Sprintf("%v %v: %d %v(Message: %v, RequestId: %v, TraceId: %v)",
+		r.Response.Request.Method, r.Response.Request.URL,
+		r.Response.StatusCode, r.Code, r.Message, RequestID, TraceID)
+}
+
+// 检查 response 是否是出错时的返回的 response
+func checkResponse(r *http.Response) error {
+	if c := r.StatusCode; 200 <= c && c <= 299 {
+		return nil
+	}
+	errorResponse := &ErrorResponse{Response: r}
+	data, err := ioutil.ReadAll(r.Body)
+	if err == nil && data != nil {
+		xml.Unmarshal(data, errorResponse)
+	}
+	return errorResponse
+}