ms-tester/internal/lib/errors.go

133 lines
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package lib
import (
"errors"
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"fmt"
"go.uber.org/zap/zapcore"
"runtime"
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)
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type code uint8
const (
ErrValidationFailed code = 1
ErrInternal code = 2
ErrExternal code = 3
ErrNoPermission code = 4
ErrUnknown code = 5
ErrDeadlineExceeded code = 6
ErrNotFound code = 7
ErrAlreadyExists code = 8
ErrConflict code = 9
ErrUnimplemented code = 10
ErrBadInput code = 11
ErrUnauthenticated code = 12
)
func (c code) String() string {
switch {
case errors.Is(c, ErrValidationFailed):
return "validation error"
case errors.Is(c, ErrInternal):
return "internal error"
case errors.Is(c, ErrExternal):
return "external error"
case errors.Is(c, ErrNoPermission):
return "permission error"
case errors.Is(c, ErrUnknown):
return "unknown error"
case errors.Is(c, ErrDeadlineExceeded):
return "deadline error"
case errors.Is(c, ErrNotFound):
return "not found error"
case errors.Is(c, ErrAlreadyExists):
return "already exists error"
case errors.Is(c, ErrConflict):
return "conflict error"
case errors.Is(c, ErrUnimplemented):
return "unimplemented error"
case errors.Is(c, ErrBadInput):
return "bad input error"
}
panic("unimplemented")
}
func (c code) Error() string {
return c.String()
}
type layer uint8
const (
LayerTransport layer = 1
LayerService layer = 2
LayerStorage layer = 3
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)
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func (l layer) String() string {
switch l {
case LayerTransport:
return "transport"
case LayerService:
return "service"
case LayerStorage:
return "storage"
}
panic("unimplemented")
}
func location(skip int) string {
_, file, line, _ := runtime.Caller(skip)
return fmt.Sprintf("%s:%d", file, line)
}
type Error struct {
src error
layer layer
code code
msg string
loc string
}
func wrap(src error, layer layer, class code, msg string, loc string) *Error {
return &Error{
src: src,
layer: layer,
code: class,
msg: msg,
loc: loc,
}
}
func (e *Error) Unwrap() []error {
return []error{e.src, e.code}
}
func (e *Error) Error() string {
return fmt.Sprintf("%s: %s", e.code.String(), e.msg)
}
func (e *Error) MarshalLogObject(encoder zapcore.ObjectEncoder) error {
if e.src != nil {
encoder.AddString("src", e.src.Error())
}
encoder.AddString("layer", e.layer.String())
encoder.AddString("code", e.code.String())
encoder.AddString("msg", e.msg)
return nil
}
func TransportError(src error, code code, msg string) error {
return wrap(src, LayerTransport, code, msg, location(2))
}
func ServiceError(src error, code code, msg string) error {
return wrap(src, LayerService, code, msg, location(2))
}
func StorageError(src error, code code, msg string) error {
return wrap(src, LayerStorage, code, msg, location(2))
}