first commit

pkg/httpclient/error.go

@@ -0,0 +1,46 @@
+package httpclient
+
+var _ ReplyErr = (*replyErr)(nil)
+
+// ReplyErr 错误响应，当 resp.StatusCode != http.StatusOK 时用来包装返回的 httpcode 和 body 。
+type ReplyErr interface {
+	error
+	StatusCode() int
+	Body() []byte
+}
+
+type replyErr struct {
+	err        error
+	statusCode int
+	body       []byte
+}
+
+func (r *replyErr) Error() string {
+	return r.err.Error()
+}
+
+func (r *replyErr) StatusCode() int {
+	return r.statusCode
+}
+
+func (r *replyErr) Body() []byte {
+	return r.body
+}
+
+func newReplyErr(statusCode int, body []byte, err error) ReplyErr {
+	return &replyErr{
+		statusCode: statusCode,
+		body:       body,
+		err:        err,
+	}
+}
+
+// ToReplyErr 尝试将 err 转换为 ReplyErr
+func ToReplyErr(err error) (ReplyErr, bool) {
+	if err == nil {
+		return nil, false
+	}
+
+	e, ok := err.(ReplyErr)
+	return e, ok
+}