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cyberwow/cyberwow/lib/state/resyncing.dart

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/*
Copyright 2019 fuwa
This file is part of CyberWOW.
CyberWOW 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.
CyberWOW 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 CyberWOW. If not, see <https://www.gnu.org/licenses/>.
*/
import 'dart:async';
import 'dart:collection';
import '../logic/controller/refresh.dart' as refresh;
import '../logic/sensor/rpc/rpc.dart' as rpc;
import '../logic/sensor/daemon.dart' as daemon;
import '../config.dart' as config;
import '../logging.dart';
import 'prototype.dart';
import 'synced.dart';
import 'exiting.dart';
class ReSyncingState extends AppState {
final Queue<String> stdout;
final StreamSink<String> processInput;
final Stream<String> processOutput;
final int pageIndex;
bool synced = false;
ReSyncingState(appHook, this.stdout, this.processInput, this.processOutput, this.pageIndex)
: super (appHook);
void append(final String msg) {
stdout.addLast(msg);
while (stdout.length > config.stdoutLineBufferSize) {
stdout.removeFirst();
}
syncState();
}
Future<AppState> next() async {
log.fine("ReSyncing next");
Future<void> printStdout() async {
await for (final line in processOutput) {
if (synced) break;
// print('re-syncing: print stdout loop');
append(line);
log.info(line);
}
}
Future<void> checkSync() async {
await for (final _null in refresh.pull(appHook.getNotification, 'ReSyncingState')) {
if (appHook.isExiting()) {
log.fine('ReSyncing state detected exiting');
break;
}
if (await daemon.isSynced()) {
synced = true;
break;
}
// print('re-syncing: checkSync loop');
}
}
printStdout();
await checkSync();
if (appHook.isExiting()) {
ExitingState _next = ExitingState
(
appHook, stdout, processOutput
);
return moveState(_next);
}
log.fine('resync: await exit');
SyncedState _next = SyncedState
(
appHook, stdout, processInput, processOutput, pageIndex
);
_next.height = await rpc.height();
return moveState(_next);
}
}