You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
2.4 KiB
107 lines
2.4 KiB
package blocksync
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
|
|
"github.com/gogo/protobuf/proto"
|
|
)
|
|
|
|
const (
|
|
BlockResponseMessagePrefixSize = 4
|
|
BlockResponseMessageFieldKeySize = 1
|
|
)
|
|
|
|
// Wrap implements the p2p Wrapper interface and wraps a blockchain message.
|
|
func (m *Message) Wrap(pb proto.Message) error {
|
|
switch msg := pb.(type) {
|
|
case *BlockRequest:
|
|
m.Sum = &Message_BlockRequest{BlockRequest: msg}
|
|
|
|
case *BlockResponse:
|
|
m.Sum = &Message_BlockResponse{BlockResponse: msg}
|
|
|
|
case *NoBlockResponse:
|
|
m.Sum = &Message_NoBlockResponse{NoBlockResponse: msg}
|
|
|
|
case *StatusRequest:
|
|
m.Sum = &Message_StatusRequest{StatusRequest: msg}
|
|
|
|
case *StatusResponse:
|
|
m.Sum = &Message_StatusResponse{StatusResponse: msg}
|
|
|
|
default:
|
|
return fmt.Errorf("unknown message: %T", msg)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Unwrap implements the p2p Wrapper interface and unwraps a wrapped blockchain
|
|
// message.
|
|
func (m *Message) Unwrap() (proto.Message, error) {
|
|
switch msg := m.Sum.(type) {
|
|
case *Message_BlockRequest:
|
|
return m.GetBlockRequest(), nil
|
|
|
|
case *Message_BlockResponse:
|
|
return m.GetBlockResponse(), nil
|
|
|
|
case *Message_NoBlockResponse:
|
|
return m.GetNoBlockResponse(), nil
|
|
|
|
case *Message_StatusRequest:
|
|
return m.GetStatusRequest(), nil
|
|
|
|
case *Message_StatusResponse:
|
|
return m.GetStatusResponse(), nil
|
|
|
|
default:
|
|
return nil, fmt.Errorf("unknown message: %T", msg)
|
|
}
|
|
}
|
|
|
|
// Validate validates the message returning an error upon failure.
|
|
func (m *Message) Validate() error {
|
|
if m == nil {
|
|
return errors.New("message cannot be nil")
|
|
}
|
|
|
|
switch msg := m.Sum.(type) {
|
|
case *Message_BlockRequest:
|
|
if m.GetBlockRequest().Height < 0 {
|
|
return errors.New("negative Height")
|
|
}
|
|
|
|
case *Message_BlockResponse:
|
|
// validate basic is called later when converting from proto
|
|
return nil
|
|
|
|
case *Message_NoBlockResponse:
|
|
if m.GetNoBlockResponse().Height < 0 {
|
|
return errors.New("negative Height")
|
|
}
|
|
|
|
case *Message_StatusResponse:
|
|
if m.GetStatusResponse().Base < 0 {
|
|
return errors.New("negative Base")
|
|
}
|
|
if m.GetStatusResponse().Height < 0 {
|
|
return errors.New("negative Height")
|
|
}
|
|
if m.GetStatusResponse().Base > m.GetStatusResponse().Height {
|
|
return fmt.Errorf(
|
|
"base %v cannot be greater than height %v",
|
|
m.GetStatusResponse().Base, m.GetStatusResponse().Height,
|
|
)
|
|
}
|
|
|
|
case *Message_StatusRequest:
|
|
return nil
|
|
|
|
default:
|
|
return fmt.Errorf("unknown message type: %T", msg)
|
|
}
|
|
|
|
return nil
|
|
}
|