mirror of https://github.com/ethereum/go-ethereum
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.
65 lines
2.3 KiB
65 lines
2.3 KiB
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of go-ethereum.
|
|
//
|
|
// go-ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// go-ethereum 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 General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package downloader
|
|
|
|
import (
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
)
|
|
|
|
// PublicDownloaderAPI provides an API which gives informatoin about the current synchronisation status.
|
|
// It offers only methods that operates on data that can be available to anyone without security risks.
|
|
type PublicDownloaderAPI struct {
|
|
d *Downloader
|
|
}
|
|
|
|
// NewPublicDownloaderAPI create a new PublicDownloaderAPI.
|
|
func NewPublicDownloaderAPI(d *Downloader) *PublicDownloaderAPI {
|
|
return &PublicDownloaderAPI{d}
|
|
}
|
|
|
|
// Progress gives progress indications when the node is synchronising with the Ethereum network.
|
|
type Progress struct {
|
|
Origin uint64 `json:"startingBlock"`
|
|
Current uint64 `json:"currentBlock"`
|
|
Height uint64 `json:"highestBlock"`
|
|
Pulled uint64 `json:"pulledStates"`
|
|
Known uint64 `json:"knownStates"`
|
|
}
|
|
|
|
// SyncingResult provides information about the current synchronisation status for this node.
|
|
type SyncingResult struct {
|
|
Syncing bool `json:"syncing"`
|
|
Status Progress `json:"status"`
|
|
}
|
|
|
|
// Syncing provides information when this nodes starts synchronising with the Ethereum network and when it's finished.
|
|
func (s *PublicDownloaderAPI) Syncing() (rpc.Subscription, error) {
|
|
sub := s.d.mux.Subscribe(StartEvent{}, DoneEvent{}, FailedEvent{})
|
|
|
|
output := func(event interface{}) interface{} {
|
|
switch event.(type) {
|
|
case StartEvent:
|
|
result := &SyncingResult{Syncing: true}
|
|
result.Status.Origin, result.Status.Current, result.Status.Height, result.Status.Pulled, result.Status.Known = s.d.Progress()
|
|
return result
|
|
case DoneEvent, FailedEvent:
|
|
return false
|
|
}
|
|
return nil
|
|
}
|
|
return rpc.NewSubscriptionWithOutputFormat(sub, output), nil
|
|
}
|
|
|