/
error.go
60 lines (52 loc) · 1.37 KB
/
error.go
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// Package web is a simple collection of high-level error and transport types
// that I end up using over and over.
package web
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"within.website/ln"
)
// NewError creates an Error based on an expected HTTP status code vs data populated
// from an HTTP response.
//
// This consumes the body of the HTTP response.
func NewError(wantStatusCode int, resp *http.Response) error {
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
resp.Body.Close()
loc, err := resp.Location()
if err != nil {
return err
}
return &Error{
WantStatus: wantStatusCode,
GotStatus: resp.StatusCode,
URL: loc,
Method: resp.Request.Method,
ResponseBody: string(data),
}
}
// Error is a web response error. Use this when API calls don't work out like you wanted them to.
type Error struct {
WantStatus, GotStatus int
URL *url.URL
Method string
ResponseBody string
}
func (e Error) Error() string {
return fmt.Sprintf("%s %s: wanted status code %d, got: %d: %v", e.Method, e.URL, e.WantStatus, e.GotStatus, e.ResponseBody)
}
// F ields for logging.
func (e Error) F() ln.F {
return ln.F{
"err_want_status": e.WantStatus,
"err_got_status": e.GotStatus,
"err_url": e.URL,
"err_method": e.Method,
"err_response_body": e.ResponseBody,
}
}