74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
|
// Copyright 2015 The go-ethereum Authors
|
||
|
|
// This file is part of the go-ethereum library.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
||
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
// the Free Software Foundation, either version 3 of the License, or
|
||
|
|
// (at your option) any later version.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
||
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
// GNU Lesser General Public License for more details.
|
||
|
|
//
|
||
|
|
// You should have received a copy of the GNU Lesser General Public License
|
||
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
package downloader
|
||
|
|
|
||
|
|
import "fmt"
|
||
|
|
|
||
|
|
// SyncMode represents the synchronisation mode of the downloader.
|
||
|
|
type SyncMode int
|
||
|
|
|
||
|
|
const (
|
||
|
|
FullSync SyncMode = iota // Synchronise the entire blockchain history from full blocks
|
||
|
|
FastSync // Quickly download the headers, full sync only at the chain head
|
||
|
|
LightSync // Download only the headers and terminate afterwards
|
||
|
|
)
|
||
|
|
|
||
|
|
func (mode SyncMode) IsValid() bool {
|
||
|
|
return mode >= FullSync && mode <= LightSync
|
||
|
|
}
|
||
|
|
|
||
|
|
// String implements the stringer interface.
|
||
|
|
func (mode SyncMode) String() string {
|
||
|
|
switch mode {
|
||
|
|
case FullSync:
|
||
|
|
return "full"
|
||
|
|
case FastSync:
|
||
|
|
return "fast"
|
||
|
|
case LightSync:
|
||
|
|
return "light"
|
||
|
|
default:
|
||
|
|
return "unknown"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (mode SyncMode) MarshalText() ([]byte, error) {
|
||
|
|
switch mode {
|
||
|
|
case FullSync:
|
||
|
|
return []byte("full"), nil
|
||
|
|
case FastSync:
|
||
|
|
return []byte("fast"), nil
|
||
|
|
case LightSync:
|
||
|
|
return []byte("light"), nil
|
||
|
|
default:
|
||
|
|
return nil, fmt.Errorf("unknown sync mode %d", mode)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (mode *SyncMode) UnmarshalText(text []byte) error {
|
||
|
|
switch string(text) {
|
||
|
|
case "full":
|
||
|
|
*mode = FullSync
|
||
|
|
case "fast":
|
||
|
|
*mode = FastSync
|
||
|
|
case "light":
|
||
|
|
*mode = LightSync
|
||
|
|
default:
|
||
|
|
return fmt.Errorf(`unknown sync mode %q, want "full", "fast" or "light"`, text)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|