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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:path/path.dart' as path;
import '../framework/framework.dart';
import '../framework/utils.dart';
final Directory _editedFlutterGalleryDir = dir(path.join(Directory.systemTemp.path, 'edited_flutter_gallery'));
final Directory flutterGalleryDir = dir(path.join(flutterDirectory.path, 'dev/integration_tests/flutter_gallery'));
const String kInitialStartupTime = 'InitialStartupTime';
const String kFirstRestartTime = 'FistRestartTime';
const String kFirstRecompileTime = 'FirstRecompileTime';
const String kSecondStartupTime = 'SecondStartupTime';
const String kSecondRestartTime = 'SecondRestartTime';
abstract class WebDevice {
static const String chrome = 'chrome';
static const String webServer = 'web-server';
}
TaskFunction createWebDevModeTest(String webDevice, bool enableIncrementalCompiler) {
return () async {
final List<String> options = <String>[
'--hot', '-d', webDevice, '--verbose', '--resident', '--target=lib/main.dart',
];
int hotRestartCount = 0;
final String expectedMessage = webDevice == WebDevice.webServer
? 'Recompile complete'
: 'Reloaded application';
final Map<String, int> measurements = <String, int>{};
await inDirectory<void>(flutterDirectory, () async {
rmTree(_editedFlutterGalleryDir);
mkdirs(_editedFlutterGalleryDir);
recursiveCopy(flutterGalleryDir, _editedFlutterGalleryDir);
await inDirectory<void>(_editedFlutterGalleryDir, () async {
{
final Process packagesGet = await startProcess(
path.join(flutterDirectory.path, 'bin', 'flutter'),
<String>['packages', 'get'],
);
await packagesGet.exitCode;
final Process process = await startProcess(
path.join(flutterDirectory.path, 'bin', 'flutter'),
flutterCommandArgs('run', options),
);
final Completer<void> stdoutDone = Completer<void>();
final Completer<void> stderrDone = Completer<void>();
final Stopwatch sw = Stopwatch()..start();
bool restarted = false;
process.stdout
.transform<String>(utf8.decoder)
.transform<String>(const LineSplitter())
.listen((String line) {
// TODO(jonahwilliams): non-dwds builds do not know when the browser is loaded.
if (line.contains('Ignoring terminal input')) {
Future<void>.delayed(const Duration(seconds: 1)).then((void _) {
process.stdin.write(restarted ? 'q' : 'r');
});
return;
}
if (line.contains('To hot restart')) {
// measure clean start-up time.
sw.stop();
measurements[kInitialStartupTime] = sw.elapsedMilliseconds;
sw
..reset()
..start();
process.stdin.write('r');
return;
}
if (line.contains(expectedMessage)) {
if (hotRestartCount == 0) {
measurements[kFirstRestartTime] = sw.elapsedMilliseconds;
// Update the file and reload again.
final File appDartSource = file(path.join(
_editedFlutterGalleryDir.path, 'lib/gallery/app.dart',
));
appDartSource.writeAsStringSync(
appDartSource.readAsStringSync().replaceFirst(
"'Flutter Gallery'", "'Updated Flutter Gallery'",
)
);
sw
..reset()
..start();
process.stdin.writeln('r');
++hotRestartCount;
} else {
restarted = true;
measurements[kFirstRecompileTime] = sw.elapsedMilliseconds;
// Quit after second hot restart.
process.stdin.writeln('q');
}
}
print('stdout: $line');
}, onDone: () {
stdoutDone.complete();
});
process.stderr
.transform<String>(utf8.decoder)
.transform<String>(const LineSplitter())
.listen((String line) {
print('stderr: $line');
}, onDone: () {
stderrDone.complete();
});
await Future.wait<void>(<Future<void>>[
stdoutDone.future,
stderrDone.future,
]);
await process.exitCode;
}
// Start `flutter run` again to make sure it loads from the previous
// state. dev compilers loads up from previously compiled JavaScript.
{
final Stopwatch sw = Stopwatch()..start();
final Process process = await startProcess(
path.join(flutterDirectory.path, 'bin', 'flutter'),
flutterCommandArgs('run', options),
);
final Completer<void> stdoutDone = Completer<void>();
final Completer<void> stderrDone = Completer<void>();
bool restarted = false;
process.stdout
.transform<String>(utf8.decoder)
.transform<String>(const LineSplitter())
.listen((String line) {
// TODO(jonahwilliams): non-dwds builds do not know when the browser is loaded.
if (line.contains('Ignoring terminal input')) {
Future<void>.delayed(const Duration(seconds: 1)).then((void _) {
process.stdin.write(restarted ? 'q' : 'r');
});
return;
}
if (line.contains('To hot restart')) {
measurements[kSecondStartupTime] = sw.elapsedMilliseconds;
sw
..reset()
..start();
process.stdin.write('r');
return;
}
if (line.contains(expectedMessage)) {
restarted = true;
measurements[kSecondRestartTime] = sw.elapsedMilliseconds;
process.stdin.writeln('q');
}
print('stdout: $line');
}, onDone: () {
stdoutDone.complete();
});
process.stderr
.transform<String>(utf8.decoder)
.transform<String>(const LineSplitter())
.listen((String line) {
print('stderr: $line');
}, onDone: () {
stderrDone.complete();
});
await Future.wait<void>(<Future<void>>[
stdoutDone.future,
stderrDone.future,
]);
await process.exitCode;
}
});
});
if (hotRestartCount != 1) {
return TaskResult.failure(null);
}
return TaskResult.success(measurements, benchmarkScoreKeys: <String>[
kInitialStartupTime,
kFirstRestartTime,
kFirstRecompileTime,
kSecondStartupTime,
kSecondRestartTime,
]);
};
}