🔥A cross-language distributed transaction manager. Support xa, tcc, saga, transactional messages. 跨语言分布式事务管理器
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package dtmcli
import (
"errors"
"fmt"
"net/http"
"strings"
"github.com/dtm-labs/dtm/client/dtmcli/dtmimp"
"github.com/go-resty/resty/v2"
)
// MustGenGid generate a new gid
func MustGenGid(server string) string {
res := map[string]string{}
resp, err := GetRestyClient().R().SetResult(&res).Get(server + "/newGid")
if err != nil || res["gid"] == "" {
panic(fmt.Errorf("newGid error: %v, resp: %s", err, resp))
}
return res["gid"]
}
// ErrorMessage2Error return an error fmt.Errorf("%s %w", errMsg, err) but trim out duplicate wrap
// eg. ErrorMessage2Error("an error. FAILURE", ErrFailure) return an error with message: "an error. FAILURE",
// no additional " FAILURE" added
func ErrorMessage2Error(errMsg string, err error) error {
errMsg = strings.TrimSuffix(errMsg, " "+err.Error())
return fmt.Errorf("%s %w", errMsg, err)
}
// HTTPResp2DtmError translate a resty response to error
// compatible with version < v1.10
func HTTPResp2DtmError(resp *resty.Response) error {
code := resp.StatusCode()
str := resp.String()
if code == http.StatusTooEarly || strings.Contains(str, ResultOngoing) {
return ErrorMessage2Error(str, ErrOngoing)
} else if code == http.StatusConflict || strings.Contains(str, ResultFailure) {
return ErrorMessage2Error(str, ErrFailure)
} else if code != http.StatusOK {
return errors.New(str)
}
return nil
}
// Result2HttpJSON return the http code and json result
// if result is error, the return proper code, else return StatusOK
func Result2HttpJSON(result interface{}) (code int, res interface{}) {
err, _ := result.(error)
if err == nil {
code = http.StatusOK
res = result
} else {
res = map[string]string{
"error": err.Error(),
}
if errors.Is(err, ErrFailure) {
code = http.StatusConflict
} else if errors.Is(err, ErrOngoing) {
code = http.StatusTooEarly
} else if err != nil {
code = http.StatusInternalServerError
}
}
return
}
func requestBranch(t *dtmimp.TransBase, method string, body interface{}, branchID string, op string, url string) (*resty.Response, error) {
resp, err := dtmimp.TransRequestBranch(t, method, body, branchID, op, url)
if err == nil {
err = HTTPResp2DtmError(resp)
}
return resp, err
}