[flutter_tools] let the logger know about machine mode (#86116)

packages/flutter_tools/lib/executable.dart

@@ -77,8 +77,9 @@ Future<void> main(List<String> args) async {
   final bool muteCommandLogging = (help || doctor) && !veryVerbose;
   final bool verboseHelp = help && verbose;
   final bool daemon = args.contains('daemon');
-  final bool runMachine = (args.contains('--machine') && args.contains('run')) ||
-                          (args.contains('--machine') && args.contains('attach'));
+  final bool machine = args.contains('--machine');
+  final bool runMachine = (machine && args.contains('run')) ||
+                          (machine && args.contains('attach'));
 
   // Cache.flutterRoot must be set early because other features use it (e.g.
   // enginePath's initializer uses it). This can only work with the real
@@ -121,10 +122,11 @@ Future<void> main(List<String> args) async {
         );
         return loggerFactory.createLogger(
           daemon: daemon,
-          machine: runMachine,
+          runMachine: runMachine,
           verbose: verbose && !muteCommandLogging,
           prefixedErrors: prefixedErrors,
           windows: globals.platform.isWindows,
+          machine: machine,
         );
       },
     },
@@ -225,9 +227,10 @@ class LoggerFactory {
   Logger createLogger({
     @required bool verbose,
     @required bool prefixedErrors,
-    @required bool machine,
+    @required bool runMachine,
     @required bool daemon,
     @required bool windows,
+    @required bool machine,
   }) {
     Logger logger;
     if (windows) {
@@ -236,13 +239,15 @@ class LoggerFactory {
         stdio: _stdio,
         outputPreferences: _outputPreferences,
         stopwatchFactory: _stopwatchFactory,
+        machine: machine,
       );
     } else {
       logger = StdoutLogger(
         terminal: _terminal,
         stdio: _stdio,
         outputPreferences: _outputPreferences,
-        stopwatchFactory: _stopwatchFactory
+        stopwatchFactory: _stopwatchFactory,
+        machine: machine,
       );
     }
     if (verbose) {
@@ -254,7 +259,7 @@ class LoggerFactory {
     if (daemon) {
       return NotifyingLogger(verbose: verbose, parent: logger);
     }
-    if (machine) {
+    if (runMachine) {
       return AppRunLogger(parent: logger);
     }
     return logger;

packages/flutter_tools/lib/runner.dart

@@ -226,6 +226,7 @@ Future<String> _doctorText() async {
     final BufferLogger logger = BufferLogger(
       terminal: globals.terminal,
       outputPreferences: globals.outputPreferences,
+      machine: false,
     );
 
     final Doctor doctor = Doctor(logger: logger);

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

@@ -36,6 +36,12 @@ abstract class Logger {
 
   bool get hasTerminal;
 
+  /// Whether the current flutter command invocation also contains a `--machine` flag.
+  ///
+  /// This should be used to elide output to stdout that is not formatted in newline
+  /// delimited JSON.
+  bool get machine;
+
   Terminal get terminal;
 
   OutputPreferences get _outputPreferences;
@@ -159,6 +165,9 @@ class DelegatingLogger implements Logger {
   @override
   bool get quiet => _delegate.quiet;
 
+  @override
+  bool get machine => _delegate.machine;
+
   @override
   set quiet(bool value) => _delegate.quiet = value;
 
@@ -269,6 +278,7 @@ class StdoutLogger extends Logger {
     required this.terminal,
     required Stdio stdio,
     required OutputPreferences outputPreferences,
+    required this.machine,
     StopwatchFactory stopwatchFactory = const StopwatchFactory(),
   })
     : _stdio = stdio,
@@ -279,6 +289,8 @@ class StdoutLogger extends Logger {
   final Terminal terminal;
   @override
   final OutputPreferences _outputPreferences;
+  @override
+  final bool machine;
   final Stdio _stdio;
   final StopwatchFactory _stopwatchFactory;
 
@@ -443,12 +455,14 @@ class WindowsStdoutLogger extends StdoutLogger {
     required Terminal terminal,
     required Stdio stdio,
     required OutputPreferences outputPreferences,
+    required bool machine,
     StopwatchFactory stopwatchFactory = const StopwatchFactory(),
   }) : super(
       terminal: terminal,
       stdio: stdio,
       outputPreferences: outputPreferences,
       stopwatchFactory: stopwatchFactory,
+      machine: machine,
     );
 
   @override
@@ -470,6 +484,7 @@ class BufferLogger extends Logger {
   BufferLogger({
     required this.terminal,
     required OutputPreferences outputPreferences,
+    this.machine = false,
     StopwatchFactory stopwatchFactory = const StopwatchFactory(),
   }) : _outputPreferences = outputPreferences,
        _stopwatchFactory = stopwatchFactory;
@@ -478,6 +493,7 @@ class BufferLogger extends Logger {
   BufferLogger.test({
     Terminal? terminal,
     OutputPreferences? outputPreferences,
+    this.machine = false,
   }) : terminal = terminal ?? Terminal.test(),
        _outputPreferences = outputPreferences ?? OutputPreferences.test(),
        _stopwatchFactory = const StopwatchFactory();
@@ -489,6 +505,9 @@ class BufferLogger extends Logger {
   @override
   final Terminal terminal;
 
+  @override
+  final bool machine;
+
   final StopwatchFactory _stopwatchFactory;
 
   @override

packages/flutter_tools/lib/src/context_runner.dart

@@ -273,11 +273,13 @@ Future<T> runInContext<T>(
             terminal: globals.terminal,
             stdio: globals.stdio,
             outputPreferences: globals.outputPreferences,
+            machine: false,
           )
         : StdoutLogger(
             terminal: globals.terminal,
             stdio: globals.stdio,
             outputPreferences: globals.outputPreferences,
+            machine: false,
           ),
       MacOSWorkflow: () => MacOSWorkflow(
         featureFlags: featureFlags,

packages/flutter_tools/test/commands.shard/hermetic/analyze_continuously_test.dart

@@ -44,7 +44,7 @@ void main() {
     platform = const LocalPlatform();
     processManager = const LocalProcessManager();
     terminal = AnsiTerminal(platform: platform, stdio: Stdio());
-    logger = BufferLogger(outputPreferences: OutputPreferences.test(), terminal: terminal);
+    logger = BufferLogger(outputPreferences: OutputPreferences.test(), terminal: terminal, machine: false);
     tempDir = fileSystem.systemTempDirectory.createTempSync('flutter_analysis_test.');
   });
 

packages/flutter_tools/test/commands.shard/hermetic/attach_test.dart

@@ -558,6 +558,9 @@ class StreamLogger extends Logger {
   @override
   bool get isVerbose => true;
 
+  @override
+  bool get machine => true;
+
   @override
   void printError(
     String message, {

packages/flutter_tools/test/general.shard/artifact_updater_test.dart

@@ -186,6 +186,7 @@ void main() {
       terminal: Terminal.test(supportsColor: true),
       stdio: FakeStdio(),
       outputPreferences: OutputPreferences.test(),
+      machine: false,
     );
     final ArtifactUpdater artifactUpdater = ArtifactUpdater(
       fileSystem: fileSystem,

packages/flutter_tools/test/general.shard/base/terminal_test.dart

@@ -16,6 +16,7 @@ void main() {
       final BufferLogger bufferLogger = BufferLogger(
         outputPreferences: OutputPreferences.test(wrapText: true, wrapColumn: 40),
         terminal: TestTerminal(platform: FakePlatform()..stdoutSupportsAnsi = true),
+        machine: false,
       );
       bufferLogger.printStatus('0123456789' * 8);
 
@@ -26,6 +27,7 @@ void main() {
       final BufferLogger bufferLogger = BufferLogger(
         outputPreferences: OutputPreferences.test(wrapText: false),
         terminal: TestTerminal(platform: FakePlatform()..stdoutSupportsAnsi = true),
+        machine: false,
       );
       final String testString = '0123456789' * 20;
       bufferLogger.printStatus(testString);
@@ -124,6 +126,7 @@ void main() {
       final BufferLogger bufferLogger = BufferLogger(
         terminal: terminalUnderTest,
         outputPreferences: OutputPreferences.test(),
+        machine: false,
       );
       terminalUnderTest.usesTerminalUi = true;
       mockStdInStream = Stream<String>.fromFutures(<Future<String>>[
@@ -148,6 +151,7 @@ void main() {
       final BufferLogger bufferLogger = BufferLogger(
         terminal: terminalUnderTest,
         outputPreferences: OutputPreferences.test(),
+        machine: false,
       );
       terminalUnderTest.usesTerminalUi = true;
       mockStdInStream = Stream<String>.fromFutures(<Future<String>>[

packages/flutter_tools/test/general.shard/migrations/cmake_project_migration_test.dart

@@ -40,6 +40,7 @@ void main () {
         testLogger = BufferLogger(
           terminal: Terminal.test(),
           outputPreferences: OutputPreferences.test(),
+          machine: false,
         );
 
         mockCmakeProject = FakeCmakeProject(managedCmakeFile);

packages/flutter_tools/test/integration.shard/downgrade_upgrade_integration_test.dart

@@ -24,6 +24,7 @@ final ProcessUtils processUtils = ProcessUtils(processManager: processManager, l
   ),
   stdio: stdio,
   outputPreferences: OutputPreferences.test(wrapText: true),
+  machine: false,
 ));
 final String flutterBin = fileSystem.path.join(getFlutterRoot(), 'bin', platform.isWindows ? 'flutter.bat' : 'flutter');
 

packages/flutter_tools/test/src/testbed.dart

@@ -38,6 +38,7 @@ final Map<Type, Generator> _testbedDefaults = <Type, Generator>{
   Logger: () => BufferLogger(
     terminal: AnsiTerminal(stdio: globals.stdio, platform: globals.platform), // Danger, using real stdio.
     outputPreferences: OutputPreferences.test(),
+    machine: false,
   ), // Allows reading logs and prevents stdout.
   OperatingSystemUtils: () => FakeOperatingSystemUtils(),
   OutputPreferences: () => OutputPreferences.test(), // configures BufferLogger to avoid color codes.