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client.go
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client.go
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package errutils
import (
"bytes"
"fmt"
"io"
"net/http"
"os"
"strconv"
)
const legoDebugClientVerboseError = "LEGO_DEBUG_CLIENT_VERBOSE_ERROR"
// HTTPDoError uses with `(http.Client).Do` error.
type HTTPDoError struct {
req *http.Request
err error
}
// NewHTTPDoError creates a new HTTPDoError.
func NewHTTPDoError(req *http.Request, err error) *HTTPDoError {
return &HTTPDoError{req: req, err: err}
}
func (h HTTPDoError) Error() string {
msg := "unable to communicate with the API server:"
if ok, _ := strconv.ParseBool(os.Getenv(legoDebugClientVerboseError)); ok {
msg += fmt.Sprintf(" [request: %s %s]", h.req.Method, h.req.URL)
}
if h.err == nil {
return msg
}
return msg + fmt.Sprintf(" error: %v", h.err)
}
func (h HTTPDoError) Unwrap() error {
return h.err
}
// ReadResponseError use with `io.ReadAll` when reading response body.
type ReadResponseError struct {
req *http.Request
StatusCode int
err error
}
// NewReadResponseError creates a new ReadResponseError.
func NewReadResponseError(req *http.Request, statusCode int, err error) *ReadResponseError {
return &ReadResponseError{req: req, StatusCode: statusCode, err: err}
}
func (r ReadResponseError) Error() string {
msg := "unable to read response body:"
if ok, _ := strconv.ParseBool(os.Getenv(legoDebugClientVerboseError)); ok {
msg += fmt.Sprintf(" [request: %s %s]", r.req.Method, r.req.URL)
}
msg += fmt.Sprintf(" [status code: %d]", r.StatusCode)
if r.err == nil {
return msg
}
return msg + fmt.Sprintf(" error: %v", r.err)
}
func (r ReadResponseError) Unwrap() error {
return r.err
}
// UnmarshalError uses with `json.Unmarshal` or `xml.Unmarshal` when reading response body.
type UnmarshalError struct {
req *http.Request
StatusCode int
Body []byte
err error
}
// NewUnmarshalError creates a new UnmarshalError.
func NewUnmarshalError(req *http.Request, statusCode int, body []byte, err error) *UnmarshalError {
return &UnmarshalError{req: req, StatusCode: statusCode, Body: bytes.TrimSpace(body), err: err}
}
func (u UnmarshalError) Error() string {
msg := "unable to unmarshal response:"
if ok, _ := strconv.ParseBool(os.Getenv(legoDebugClientVerboseError)); ok {
msg += fmt.Sprintf(" [request: %s %s]", u.req.Method, u.req.URL)
}
msg += fmt.Sprintf(" [status code: %d] body: %s", u.StatusCode, string(u.Body))
if u.err == nil {
return msg
}
return msg + fmt.Sprintf(" error: %v", u.err)
}
func (u UnmarshalError) Unwrap() error {
return u.err
}
// UnexpectedStatusCodeError use when the status of the response is unexpected but there is no API error type.
type UnexpectedStatusCodeError struct {
req *http.Request
StatusCode int
Body []byte
}
// NewUnexpectedStatusCodeError creates a new UnexpectedStatusCodeError.
func NewUnexpectedStatusCodeError(req *http.Request, statusCode int, body []byte) *UnexpectedStatusCodeError {
return &UnexpectedStatusCodeError{req: req, StatusCode: statusCode, Body: bytes.TrimSpace(body)}
}
func NewUnexpectedResponseStatusCodeError(req *http.Request, resp *http.Response) *UnexpectedStatusCodeError {
raw, _ := io.ReadAll(resp.Body)
return &UnexpectedStatusCodeError{req: req, StatusCode: resp.StatusCode, Body: bytes.TrimSpace(raw)}
}
func (u UnexpectedStatusCodeError) Error() string {
msg := "unexpected status code:"
if ok, _ := strconv.ParseBool(os.Getenv(legoDebugClientVerboseError)); ok {
msg += fmt.Sprintf(" [request: %s %s]", u.req.Method, u.req.URL)
}
return msg + fmt.Sprintf(" [status code: %d] body: %s", u.StatusCode, string(u.Body))
}