75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
package error
|
|
|
|
import (
|
|
"encoding/json"
|
|
"net/http"
|
|
)
|
|
|
|
var errors map[int]string
|
|
|
|
const ()
|
|
|
|
func init() {
|
|
errors = make(map[int]string)
|
|
|
|
// command related errors
|
|
errors[100] = "Key Not Found"
|
|
errors[101] = "The given PrevValue is not equal to the value of the key"
|
|
errors[102] = "Not A File"
|
|
errors[103] = "Reached the max number of machines in the cluster"
|
|
|
|
// Post form related errors
|
|
errors[200] = "Value is Required in POST form"
|
|
errors[201] = "PrevValue is Required in POST form"
|
|
errors[202] = "The given TTL in POST form is not a number"
|
|
errors[203] = "The given index in POST form is not a number"
|
|
|
|
// raft related errors
|
|
errors[300] = "Raft Internal Error"
|
|
errors[301] = "During Leader Election"
|
|
|
|
// keyword
|
|
errors[400] = "The prefix of the given key is a keyword in etcd"
|
|
|
|
// etcd related errors
|
|
errors[500] = "watcher is cleared due to etcd recovery"
|
|
|
|
}
|
|
|
|
type Error struct {
|
|
ErrorCode int `json:"errorCode"`
|
|
Message string `json:"message"`
|
|
Cause string `json:"cause,omitempty"`
|
|
}
|
|
|
|
func NewError(errorCode int, cause string) Error {
|
|
return Error{
|
|
ErrorCode: errorCode,
|
|
Message: errors[errorCode],
|
|
Cause: cause,
|
|
}
|
|
}
|
|
|
|
func Message(code int) string {
|
|
return errors[code]
|
|
}
|
|
|
|
// Only for error interface
|
|
func (e Error) Error() string {
|
|
return e.Message
|
|
}
|
|
|
|
func (e Error) toJsonString() string {
|
|
b, _ := json.Marshal(e)
|
|
return string(b)
|
|
}
|
|
|
|
func (e Error) Write(w http.ResponseWriter) {
|
|
// 3xx is reft internal error
|
|
if e.ErrorCode/100 == 3 {
|
|
http.Error(w, e.toJsonString(), http.StatusInternalServerError)
|
|
} else {
|
|
http.Error(w, e.toJsonString(), http.StatusBadRequest)
|
|
}
|
|
}
|