110 lines
2.4 KiB
Go
110 lines
2.4 KiB
Go
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package linodego
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import (
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"fmt"
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"log"
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"net/http"
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"strings"
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"gopkg.in/resty.v1"
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)
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const (
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// ErrorFromString is the Code identifying Errors created by string types
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ErrorFromString = 1
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// ErrorFromError is the Code identifying Errors created by error types
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ErrorFromError = 2
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// ErrorFromStringer is the Code identifying Errors created by fmt.Stringer types
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ErrorFromStringer = 3
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)
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// Error wraps the LinodeGo error with the relevant http.Response
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type Error struct {
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Response *http.Response
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Code int
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Message string
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}
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// APIErrorReason is an individual invalid request message returned by the Linode API
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type APIErrorReason struct {
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Reason string `json:"reason"`
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Field string `json:"field"`
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}
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func (r APIErrorReason) Error() string {
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if len(r.Field) == 0 {
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return r.Reason
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}
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return fmt.Sprintf("[%s] %s", r.Field, r.Reason)
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}
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// APIError is the error-set returned by the Linode API when presented with an invalid request
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type APIError struct {
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Errors []APIErrorReason `json:"errors"`
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}
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func coupleAPIErrors(r *resty.Response, err error) (*resty.Response, error) {
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if err != nil {
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return nil, NewError(err)
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}
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if r.Error() != nil {
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apiError, ok := r.Error().(*APIError)
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if !ok || (ok && len(apiError.Errors) == 0) {
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return r, nil
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}
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return nil, NewError(r)
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}
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return r, nil
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}
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func (e APIError) Error() string {
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var x []string
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for _, msg := range e.Errors {
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x = append(x, msg.Error())
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}
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return strings.Join(x, "; ")
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}
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func (g Error) Error() string {
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return fmt.Sprintf("[%03d] %s", g.Code, g.Message)
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}
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// NewError creates a linodego.Error with a Code identifying the source err type,
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// - ErrorFromString (1) from a string
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// - ErrorFromError (2) for an error
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// - ErrorFromStringer (3) for a Stringer
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// - HTTP Status Codes (100-600) for a resty.Response object
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func NewError(err interface{}) *Error {
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if err == nil {
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return nil
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}
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switch e := err.(type) {
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case *Error:
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return e
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case *resty.Response:
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apiError, ok := e.Error().(*APIError)
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if !ok {
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log.Fatalln("Unexpected Resty Error Response")
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}
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return &Error{
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Code: e.RawResponse.StatusCode,
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Message: apiError.Error(),
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Response: e.RawResponse,
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}
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case error:
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return &Error{Code: ErrorFromError, Message: e.Error()}
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case string:
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return &Error{Code: ErrorFromString, Message: e}
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case fmt.Stringer:
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return &Error{Code: ErrorFromStringer, Message: e.String()}
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default:
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log.Fatalln("Unsupported type to linodego.NewError")
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panic(err)
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}
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}
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