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errors.go
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errors.go
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package response
import (
"fmt"
"net/http"
)
type (
// Error object for outputting JSON-RPC 2.0
// errors.
Error struct {
Code int64 `json:"code"`
HTTPCode int `json:"-"`
Cause error `json:"-"`
Message string `json:"message"`
Data string `json:"data,omitempty"`
}
)
var (
// ErrInvalidParams represents a generic 'invalid parameters' error.
ErrInvalidParams = NewInvalidParamsError("", nil)
// ErrAlreadyExists represents SubmitError with code -501
ErrAlreadyExists = NewSubmitError(-501, "Block or transaction already exists and cannot be sent repeatedly.")
// ErrOutOfMemory represents SubmitError with code -502
ErrOutOfMemory = NewSubmitError(-502, "The memory pool is full and no more transactions can be sent.")
// ErrUnableToVerify represents SubmitError with code -503
ErrUnableToVerify = NewSubmitError(-503, "The block cannot be validated.")
// ErrValidationFailed represents SubmitError with code -504
ErrValidationFailed = NewSubmitError(-504, "Block or transaction validation failed.")
// ErrPolicyFail represents SubmitError with code -505
ErrPolicyFail = NewSubmitError(-505, "One of the Policy filters failed.")
// ErrUnknown represents SubmitError with code -500
ErrUnknown = NewSubmitError(-500, "Unknown error.")
)
// NewError is an Error constructor that takes Error contents from its
// parameters.
func NewError(code int64, httpCode int, message string, data string, cause error) *Error {
return &Error{
Code: code,
HTTPCode: httpCode,
Cause: cause,
Message: message,
Data: data,
}
}
// NewParseError creates a new error with code
// -32700.:%s
func NewParseError(data string, cause error) *Error {
return NewError(-32700, http.StatusBadRequest, "Parse Error", data, cause)
}
// NewInvalidRequestError creates a new error with
// code -32600.
func NewInvalidRequestError(data string, cause error) *Error {
return NewError(-32600, http.StatusUnprocessableEntity, "Invalid Request", data, cause)
}
// NewMethodNotFoundError creates a new error with
// code -32601.
func NewMethodNotFoundError(data string, cause error) *Error {
return NewError(-32601, http.StatusMethodNotAllowed, "Method not found", data, cause)
}
// NewInvalidParamsError creates a new error with
// code -32602.
func NewInvalidParamsError(data string, cause error) *Error {
return NewError(-32602, http.StatusUnprocessableEntity, "Invalid Params", data, cause)
}
// NewInternalServerError creates a new error with
// code -32603.
func NewInternalServerError(data string, cause error) *Error {
return NewError(-32603, http.StatusInternalServerError, "Internal error", data, cause)
}
// NewRPCError creates a new error with
// code -100
func NewRPCError(message string, data string, cause error) *Error {
return NewError(-100, http.StatusUnprocessableEntity, message, data, cause)
}
// NewSubmitError creates a new error with
// specified error code and error message
func NewSubmitError(code int64, message string) *Error {
return NewError(code, http.StatusUnprocessableEntity, message, "", nil)
}
// Error implements the error interface.
func (e *Error) Error() string {
return fmt.Sprintf("%s (%d) - %s - %s", e.Message, e.Code, e.Data, e.Cause)
}
// WrapErrorWithData returns copy of the given error with specified data and cause.
// It does not modify the source error.
func WrapErrorWithData(e *Error, data error) *Error {
return NewError(e.Code, e.HTTPCode, e.Message, data.Error(), data)
}