create a crash report

packages/flutter_tools/lib/executable.dart

@@ -6,6 +6,7 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:args/command_runner.dart';
+import 'package:path/path.dart' as path;
 import 'package:stack_trace/stack_trace.dart';
 
 import 'src/base/context.dart';
@@ -31,6 +32,7 @@ import 'src/commands/update_packages.dart';
 import 'src/commands/upgrade.dart';
 import 'src/device.dart';
 import 'src/doctor.dart';
+import 'src/globals.dart';
 import 'src/runner/flutter_command_runner.dart';
 
 /// Main entry point for commands.
@@ -89,9 +91,65 @@ Future<Null> main(List<String> args) async {
       // We've caught an exit code.
       exit(error.exitCode);
     } else {
-      stderr.writeln(error);
-      stderr.writeln(chain.terse);
+      // We've crashed; emit a log report.
+      stderr.writeln();
+      stderr.writeln('Oops; flutter has crashed: "$error"');
+
+      File file = _createCrashReport(args, error, chain);
+
+      stderr.writeln();
+      stderr.writeln('Crash report written to ${path.relative(file.path)}.');
+      stderr.writeln('Please let us know at https://github.com/flutter/flutter/issues!');
       exit(1);
     }
   });
 }
+
+File _createCrashReport(List<String> args, dynamic error, Chain chain) {
+  File crashFile = _createCrashFileName(Directory.current, 'flutter');
+
+  StringBuffer buf = new StringBuffer();
+
+  buf.writeln('Flutter crash report; please file at https://github.com/flutter/flutter/issues.\n');
+
+  buf.writeln('## command\n');
+  buf.writeln('flutter ${args.join(' ')}\n');
+
+  buf.writeln('## exception\n');
+  buf.writeln('$error\n');
+  buf.writeln('${chain.terse}');
+
+  buf.writeln('## flutter doctor\n');
+  buf.writeln(_doctorText());
+
+  crashFile.writeAsStringSync(buf.toString());
+
+  return crashFile;
+}
+
+File _createCrashFileName(Directory dir, String baseName) {
+  int i = 1;
+
+  while (true) {
+    String name = '${baseName}_${i.toString().padLeft(2, '0')}.log';
+    File file = new File(path.join(dir.path, name));
+    if (!file.existsSync())
+      return file;
+    i++;
+  }
+}
+
+String _doctorText() {
+  try {
+    BufferLogger logger = new BufferLogger();
+    AppContext appContext = new AppContext();
+
+    appContext[Logger] = logger;
+
+    appContext.runInZone(() => doctor.diagnose());
+
+    return logger.statusText;
+  } catch (error) {
+    return '';
+  }
+}

packages/flutter_tools/lib/src/android/android_device.dart

@@ -223,9 +223,9 @@ class AndroidDevice extends Device {
     ServiceProtocolDiscovery serviceProtocolDiscovery =
         new ServiceProtocolDiscovery(logReader);
 
-    // We take this future here but do not wait for completion until *after*
-    // we start the bundle.
-    Future<int> serviceProtocolPort = serviceProtocolDiscovery.nextPort();
+    // We take this future here but do not wait for completion until *after* we
+    // start the bundle.
+    Future<int> scrapeServicePort = serviceProtocolDiscovery.nextPort();
 
     List<String> cmd = adbCommandForDevice(<String>[
       'shell', 'am', 'start',
@@ -250,13 +250,23 @@ class AndroidDevice extends Device {
       return false;
     }
 
-    // Wait for the service protocol port here. This will complete once
-    // the device has printed "Observatory is listening on..."
-    int devicePort = await serviceProtocolPort;
-    printTrace('service protocol port = $devicePort');
-    await _forwardObservatoryPort(devicePort, debugPort);
+    // Wait for the service protocol port here. This will complete once the
+    // device has printed "Observatory is listening on...".
+    printTrace('Waiting for observatory port to be available...');
 
-    return true;
+    try {
+      int devicePort = await scrapeServicePort.timeout(new Duration(seconds: 12));
+      printTrace('service protocol port = $devicePort');
+      await _forwardObservatoryPort(devicePort, debugPort);
+      return true;
+    } catch (error) {
+      if (error is TimeoutException)
+        printError('Timed out while waiting for a debug connection.');
+      else
+        printError('Error waiting for a debug connection: $error');
+
+      return false;
+    }
   }
 
   @override
@@ -303,7 +313,7 @@ class AndroidDevice extends Device {
     return runCommandAndStreamOutput(command).then((int exitCode) => exitCode == 0);
   }
 
-  // TODO(devoncarew): Return android_arm or android_x64 based on [isLocalEmulator].
+  // TODO(devoncarew): Use isLocalEmulator to return android_arm or android_x64.
   @override
   TargetPlatform get platform => TargetPlatform.android_arm;
 
@@ -533,7 +543,9 @@ class _AdbLogReader extends DeviceLogReader {
     String lastTimestamp = device.lastLogcatTimestamp;
     if (lastTimestamp != null)
       args.addAll(<String>['-T', lastTimestamp]);
-    args.addAll(<String>['-s', 'flutter:V', 'ActivityManager:W', 'System.err:W', '*:F']);
+    args.addAll(<String>[
+      '-s', 'flutter:V', 'SkyMain:V', 'AndroidRuntime:W', 'ActivityManager:W', 'System.err:W', '*:F'
+    ]);
     _process = await runCommand(device.adbCommandForDevice(args));
     _stdoutSubscription =
         _process.stdout.transform(UTF8.decoder)

packages/flutter_tools/lib/src/application_package.dart

@@ -125,8 +125,7 @@ class ApplicationPackageStore {
     for (BuildConfiguration config in configs) {
       switch (config.targetPlatform) {
         case TargetPlatform.android_arm:
-          assert(android == null);
-          android = new AndroidApk.fromBuildConfiguration(config);
+          android ??= new AndroidApk.fromBuildConfiguration(config);
           break;
 
         case TargetPlatform.ios:

packages/flutter_tools/lib/src/artifacts.dart

@@ -72,12 +72,15 @@ class Artifact {
 
 class ArtifactStore {
   static const List<Artifact> knownArtifacts = const <Artifact>[
+    // tester
     const Artifact._(
       name: 'Flutter Tester',
       fileName: 'sky_shell',
       type: ArtifactType.shell,
       targetPlatform: TargetPlatform.linux_x64
     ),
+
+    // snapshotters
     const Artifact._(
       name: 'Sky Snapshot',
       fileName: 'sky_snapshot',
@@ -90,6 +93,8 @@ class ArtifactStore {
       type: ArtifactType.snapshot,
       hostPlatform: HostPlatform.mac
     ),
+
+    // mojo
     const Artifact._(
       name: 'Flutter for Mojo',
       fileName: 'flutter.mojo',
@@ -102,6 +107,8 @@ class ArtifactStore {
       type: ArtifactType.mojo,
       targetPlatform: TargetPlatform.linux_x64
     ),
+
+    // android-arm
     const Artifact._(
       name: 'Compiled Java code',
       fileName: 'classes.dex.jar',
@@ -126,6 +133,8 @@ class ArtifactStore {
       type: ArtifactType.androidLibSkyShell,
       targetPlatform: TargetPlatform.android_arm
     ),
+
+    // iOS
     const Artifact._(
       name: 'iOS Runner (Xcode Project)',
       fileName: 'FlutterXcode.zip',
@@ -202,7 +211,7 @@ class ArtifactStore {
     return cacheDir;
   }
 
-  static Future<String> getPath(Artifact artifact) async {
+  static String getPath(Artifact artifact) {
     File cachedFile = new File(path.join(
         getBaseCacheDir().path, 'engine', artifact.platform, artifact.fileName
     ));

packages/flutter_tools/lib/src/base/process.dart

@@ -116,22 +116,28 @@ String _runWithLoggingSync(List<String> cmd, {
   printTrace(cmdText);
   ProcessResult results =
       Process.runSync(cmd[0], cmd.getRange(1, cmd.length).toList(), workingDirectory: workingDirectory);
+
+  printTrace('Exit code ${results.exitCode} from: ${cmd.join(' ')}');
+
+  if (results.stdout.isNotEmpty) {
+    if (results.exitCode != 0 && noisyErrors)
+      printStatus(results.stdout.trim());
+    else
+      printTrace(results.stdout.trim());
+  }
+
   if (results.exitCode != 0) {
-    String errorDescription = 'Error code ${results.exitCode} '
-        'returned when attempting to run command: ${cmd.join(' ')}';
-    printTrace(errorDescription);
-    if (results.stderr.length > 0) {
-      if (noisyErrors) {
+    if (results.stderr.isNotEmpty) {
+      if (noisyErrors)
         printError(results.stderr.trim());
-      } else {
-        printTrace('Errors logged: ${results.stderr.trim()}');
-      }
+      else
+        printTrace(results.stderr.trim());
     }
+
     if (checked)
-      throw errorDescription;
+      throw 'Exit code ${results.exitCode} from: ${cmd.join(' ')}';
   }
-  if (results.stdout.trim().isNotEmpty)
-    printTrace(results.stdout.trim());
+
   return results.stdout.trim();
 }
 

packages/flutter_tools/lib/src/commands/build_apk.dart

@@ -187,7 +187,10 @@ class BuildApkCommand extends FlutterCommand {
 
     await downloadToolchain();
 
+    // TODO(devoncarew): This command should take an arg for the output type (arm / x64).
+
     return await buildAndroid(
+      TargetPlatform.android_arm,
       toolchain: toolchain,
       configs: buildConfigurations,
       enginePath: runner.enginePath,
@@ -212,6 +215,7 @@ Future<_ApkComponents> _findApkComponents(
 ) async {
   List<String> artifactPaths;
   if (enginePath != null) {
+    // TODO(devoncarew): Support x64.
     artifactPaths = [
       '$enginePath/third_party/icu/android/icudtl.dat',
       '${config.buildDir}/gen/sky/shell/shell/classes.dex.jar',
@@ -225,10 +229,13 @@ Future<_ApkComponents> _findApkComponents(
       ArtifactType.androidLibSkyShell,
       ArtifactType.androidKeystore,
     ];
-    Iterable<Future<String>> pathFutures = artifactTypes.map(
-        (ArtifactType type) => ArtifactStore.getPath(ArtifactStore.getArtifact(
-            type: type, targetPlatform: TargetPlatform.android_arm)));
-    artifactPaths = await Future.wait(pathFutures);
+    Iterable<String> pathFutures = artifactTypes.map((ArtifactType type) {
+      return ArtifactStore.getPath(ArtifactStore.getArtifact(
+        type: type,
+        targetPlatform: config.targetPlatform
+      ));
+    });
+    artifactPaths = pathFutures.toList();
   }
 
   _ApkComponents components = new _ApkComponents();
@@ -254,9 +261,14 @@ Future<_ApkComponents> _findApkComponents(
 }
 
 int _buildApk(
-  _ApkComponents components, String flxPath, ApkKeystoreInfo keystore, String outputFile
+  TargetPlatform platform,
+  _ApkComponents components,
+  String flxPath,
+  ApkKeystoreInfo keystore,
+  String outputFile
 ) {
   Directory tempDir = Directory.systemTemp.createTempSync('flutter_tools');
+
   try {
     _ApkBuilder builder = new _ApkBuilder(androidSdk.latestVersion);
 
@@ -273,7 +285,9 @@ int _buildApk(
 
     _AssetBuilder artifactBuilder = new _AssetBuilder(tempDir, 'artifacts');
     artifactBuilder.add(classesDex, 'classes.dex');
-    artifactBuilder.add(components.libSkyShell, 'lib/armeabi-v7a/libsky_shell.so');
+    // x86? x86_64?
+    String abiDir = platform == TargetPlatform.android_arm ? 'armeabi-v7a' : 'x86';
+    artifactBuilder.add(components.libSkyShell, 'lib/$abiDir/libsky_shell.so');
 
     File unalignedApk = new File('${tempDir.path}/app.apk.unaligned');
     builder.package(
@@ -359,7 +373,8 @@ bool _needsRebuild(String apkPath, String manifest) {
   return false;
 }
 
-Future<int> buildAndroid({
+Future<int> buildAndroid(
+  TargetPlatform platform, {
   Toolchain toolchain,
   List<BuildConfiguration> configs,
   String enginePath,
@@ -367,7 +382,7 @@ Future<int> buildAndroid({
   String manifest: _kDefaultAndroidManifestPath,
   String resources,
   String outputFile: _kDefaultOutputPath,
-  String target: '',
+  String target,
   String flxPath,
   ApkKeystoreInfo keystore
 }) async {
@@ -399,10 +414,9 @@ Future<int> buildAndroid({
       resources = _kDefaultResourcesPath;
   }
 
-  BuildConfiguration config = configs.firstWhere(
-    (BuildConfiguration bc) => bc.targetPlatform == TargetPlatform.android_arm
-  );
+  BuildConfiguration config = configs.firstWhere((BuildConfiguration bc) => bc.targetPlatform == platform);
   _ApkComponents components = await _findApkComponents(config, enginePath, manifest, resources);
+
   if (components == null) {
     printError('Failure building APK. Unable to find components.');
     return 1;
@@ -416,36 +430,34 @@ Future<int> buildAndroid({
       printError('(Omit the --flx option to build the FLX automatically)');
       return 1;
     }
-    return _buildApk(components, flxPath, keystore, outputFile);
+
+    return _buildApk(platform, components, flxPath, keystore, outputFile);
   } else {
     // Find the path to the main Dart file; build the FLX.
     String mainPath = findMainDartFile(target);
     String localBundlePath = await flx.buildFlx(toolchain, mainPath: mainPath);
 
-    return _buildApk(components, localBundlePath, keystore, outputFile);
+    return _buildApk(platform, components, localBundlePath, keystore, outputFile);
   }
 }
 
 // TODO(mpcomplete): move this to Device?
 /// This is currently Android specific.
-Future<int> buildAll(
-  List<Device> devices,
+Future<int> buildForDevice(
+  Device device,
   ApplicationPackageStore applicationPackages,
   Toolchain toolchain,
   List<BuildConfiguration> configs, {
   String enginePath,
   String target: ''
 }) async {
-  for (Device device in devices) {
-    ApplicationPackage package = applicationPackages.getPackageForPlatform(device.platform);
-    if (package == null)
-      continue;
-
-    // TODO(mpcomplete): Temporary hack. We only support the apk builder atm.
-    if (package != applicationPackages.android)
-      continue;
+  ApplicationPackage package = applicationPackages.getPackageForPlatform(device.platform);
+  if (package == null)
+    return 0;
 
-    int result = await build(toolchain, configs, enginePath: enginePath, target: target);
+  // TODO(mpcomplete): Temporary hack. We only support the apk builder atm.
+  if (package == applicationPackages.android) {
+    int result = await build(device.platform, toolchain, configs, enginePath: enginePath, target: target);
     if (result != 0)
       return result;
   }
@@ -454,10 +466,11 @@ Future<int> buildAll(
 }
 
 Future<int> build(
+  TargetPlatform platform,
   Toolchain toolchain,
   List<BuildConfiguration> configs, {
   String enginePath,
-  String target: ''
+  String target
 }) async {
   if (!FileSystemEntity.isFileSync(_kDefaultAndroidManifestPath)) {
     printError('Cannot build APK. Missing $_kDefaultAndroidManifestPath.');
@@ -465,6 +478,7 @@ Future<int> build(
   }
 
   int result = await buildAndroid(
+    platform,
     toolchain: toolchain,
     configs: configs,
     enginePath: enginePath,

packages/flutter_tools/lib/src/commands/drive.dart

@@ -245,8 +245,10 @@ Future<int> startApp(DriveCommand command) async {
   // TODO(devoncarew): We should remove the need to special case here.
   if (command.device is AndroidDevice) {
     printTrace('Building an APK.');
-    int result = await build_apk.build(command.toolchain, command.buildConfigurations,
-      enginePath: command.runner.enginePath, target: command.target);
+    int result = await build_apk.build(
+      command.device.platform, command.toolchain, command.buildConfigurations,
+      enginePath: command.runner.enginePath, target: command.target
+    );
 
     if (result != 0)
       return result;

packages/flutter_tools/lib/src/commands/run.dart

@@ -182,8 +182,8 @@ Future<int> startApp(
 
   if (install) {
     printTrace('Running build command.');
-    int result = await buildAll(
-      <Device>[device], applicationPackages, toolchain, configs,
+    int result = await buildForDevice(
+      device, applicationPackages, toolchain, configs,
       enginePath: enginePath,
       target: target
     );
@@ -232,15 +232,8 @@ Future<int> startApp(
     platformArgs: platformArgs
   );
 
-  if (!result) {
+  if (!result)
     printError('Error running application on ${device.name}.');
-  } else {
-    // If the user specified --start-paused (and the device supports it) then
-    // wait for the observatory port to become available before returning from
-    // `startApp()`.
-    if (startPaused && device.supportsStartPaused)
-      await delayUntilObservatoryAvailable('localhost', debugPort);
-  }
 
   return result ? 0 : 2;
 }

packages/flutter_tools/lib/src/commands/run_mojo.dart

@@ -99,7 +99,7 @@ class RunMojoCommand extends FlutterCommand {
     if (config == null || config.type == BuildType.prebuilt) {
       TargetPlatform targetPlatform = argResults['android'] ? TargetPlatform.android_arm : TargetPlatform.linux_x64;
       Artifact artifact = ArtifactStore.getArtifact(type: ArtifactType.mojo, targetPlatform: targetPlatform);
-      flutterPath = _makePathAbsolute(await ArtifactStore.getPath(artifact));
+      flutterPath = _makePathAbsolute(ArtifactStore.getPath(artifact));
     } else {
       String localPath = path.join(config.buildDir, 'flutter.mojo');
       flutterPath = _makePathAbsolute(localPath);

packages/flutter_tools/lib/src/commands/test.dart

@@ -49,7 +49,7 @@ class TestCommand extends FlutterCommand {
     if (config.type == BuildType.prebuilt) {
       Artifact artifact = ArtifactStore.getArtifact(
         type: ArtifactType.shell, targetPlatform: config.targetPlatform);
-      return await ArtifactStore.getPath(artifact);
+      return ArtifactStore.getPath(artifact);
     } else {
       switch (config.targetPlatform) {
         case TargetPlatform.linux_x64:

packages/flutter_tools/lib/src/ios/setup_xcodeproj.dart

@@ -104,8 +104,8 @@ Future<int> setupXcodeProjectHarness(String flutterProjectPath) async {
     targetPlatform: TargetPlatform.ios
   );
 
-  String xcodeProjectPath = await ArtifactStore.getPath(xcodeProject);
-  List<int> archiveBytes = await new File(xcodeProjectPath).readAsBytes();
+  String xcodeProjectPath = ArtifactStore.getPath(xcodeProject);
+  List<int> archiveBytes = new File(xcodeProjectPath).readAsBytesSync();
 
   if (archiveBytes.isEmpty) {
     printError('Error: No archive bytes received.');

packages/flutter_tools/lib/src/ios/simulators.dart

@@ -459,9 +459,9 @@ class IOSSimulator extends Device {
     ServiceProtocolDiscovery serviceProtocolDiscovery =
         new ServiceProtocolDiscovery(logReader);
 
-    // We take this future here but do not wait for completion until *after*
-    // we start the application.
-    Future<int> serviceProtocolPort = serviceProtocolDiscovery.nextPort();
+    // We take this future here but do not wait for completion until *after* we
+    // start the application.
+    Future<int> scrapeServicePort = serviceProtocolDiscovery.nextPort();
 
     // Prepare launch arguments.
     List<String> args = <String>[
@@ -487,14 +487,23 @@ class IOSSimulator extends Device {
       return false;
     }
 
-    // Wait for the service protocol port here. This will complete once
-    // the device has printed "Observatory is listening on..."
-    int devicePort = await serviceProtocolPort;
-    printTrace('service protocol port = $devicePort');
-    printTrace('Successfully started ${app.name} on $id.');
-    printStatus('Observatory listening on http://127.0.0.1:$devicePort');
+    // Wait for the service protocol port here. This will complete once the
+    // device has printed "Observatory is listening on..."
+    printTrace('Waiting for observatory port to be available...');
 
-    return true;
+    try {
+      int devicePort = await scrapeServicePort.timeout(new Duration(seconds: 12));
+      printTrace('service protocol port = $devicePort');
+      printStatus('Observatory listening on http://127.0.0.1:$devicePort');
+      return true;
+    } catch (error) {
+      if (error is TimeoutException)
+        printError('Timed out while waiting for a debug connection.');
+      else
+        printError('Error waiting for a debug connection: $error');
+
+      return false;
+    }
   }
 
   bool _applicationIsInstalledAndRunning(ApplicationPackage app) {

packages/flutter_tools/lib/src/runner/flutter_command_runner.dart

@@ -167,8 +167,9 @@ class FlutterCommandRunner extends CommandRunner {
   @override
   Future<dynamic> run(Iterable<String> args) {
     return super.run(args).then((dynamic result) {
-      logger.flush();
       return result;
+    }).whenComplete(() {
+      logger.flush();
     });
   }
 

packages/flutter_tools/lib/src/toolchain.dart

@@ -36,7 +36,7 @@ class SnapshotCompiler {
   }
 }
 
-Future<String> _getCompilerPath(BuildConfiguration config) async {
+String _getCompilerPath(BuildConfiguration config) {
   if (config.type != BuildType.prebuilt) {
     String compilerPath = path.join(config.buildDir, 'clang_x64', 'sky_snapshot');
     if (FileSystemEntity.isFileSync(compilerPath))
@@ -48,7 +48,7 @@ Future<String> _getCompilerPath(BuildConfiguration config) async {
   }
   Artifact artifact = ArtifactStore.getArtifact(
     type: ArtifactType.snapshot, hostPlatform: config.hostPlatform);
-  return await ArtifactStore.getPath(artifact);
+  return ArtifactStore.getPath(artifact);
 }
 
 class Toolchain {
@@ -58,7 +58,7 @@ class Toolchain {
 
   static Future<Toolchain> forConfigs(List<BuildConfiguration> configs) async {
     for (BuildConfiguration config in configs) {
-      String compilerPath = await _getCompilerPath(config);
+      String compilerPath = _getCompilerPath(config);
       if (compilerPath != null)
         return new Toolchain(compiler: new SnapshotCompiler(compilerPath));
     }