Add analytics package + setTelemetry method attached (flutter#124015)

The first of many PRs for transitioning to `package:unified_analytics`.
This PR is only focused on disabling and enabling telemetry via the
`flutter config --[no-]analytics` flag

Fixes: flutter#121617

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

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---------

Co-authored-by: Christopher Fujino <fujino@google.com>
Co-authored-by: Christopher Fujino <christopherfujino@gmail.com>

packages/flutter_tools/lib/runner.dart

@@ -22,6 +22,7 @@ import 'src/context_runner.dart';
 import 'src/doctor.dart';
 import 'src/globals.dart' as globals;
 import 'src/reporting/crash_reporting.dart';
+import 'src/reporting/reporting.dart';
 import 'src/runner/flutter_command.dart';
 import 'src/runner/flutter_command_runner.dart';
 
@@ -61,6 +62,44 @@ Future<int> run(
     StackTrace? firstStackTrace;
     return runZoned<Future<int>>(() async {
       try {
+        // Ensure that the consent message has been displayed
+        if (globals.analytics.shouldShowMessage) {
+          globals.logger.printStatus(globals.analytics.getConsentMessage);
+
+          // Invoking this will onboard the flutter tool onto
+          // the package on the developer's machine and will
+          // allow for events to be sent to Google Analytics
+          // on subsequent runs of the flutter tool (ie. no events
+          // will be sent on the first run to allow developers to
+          // opt out of collection)
+          globals.analytics.clientShowedMessage();
+        }
+
+        // Disable analytics if user passes in the `--disable-telemetry` option
+        // `flutter --disable-telemetry`
+        //
+        // Same functionality as `flutter config --no-analytics` for disabling
+        // except with the `value` hard coded as false
+        if (args.contains('--disable-telemetry')) {
+          const bool value = false;
+          // The tool sends the analytics event *before* toggling the flag
+          // intentionally to be sure that opt-out events are sent correctly.
+          AnalyticsConfigEvent(enabled: value).send();
+          if (!value) {
+            // Normally, the tool waits for the analytics to all send before the
+            // tool exits, but only when analytics are enabled. When reporting that
+            // analytics have been disable, the wait must be done here instead.
+            await globals.flutterUsage.ensureAnalyticsSent();
+          }
+          globals.flutterUsage.enabled = value;
+          globals.printStatus('Analytics reporting disabled.');
+
+          // TODO(eliasyishak): Set the telemetry for the unified_analytics
+          //  package as well, the above will be removed once we have
+          //  fully transitioned to using the new package
+          await globals.analytics.setTelemetry(value);
+        }
+
         await runner.run(args);
 
         // Triggering [runZoned]'s error callback does not necessarily mean that

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

@@ -139,6 +139,11 @@ class ConfigCommand extends FlutterCommand {
       }
       globals.flutterUsage.enabled = value;
       globals.printStatus('Analytics reporting ${value ? 'enabled' : 'disabled'}.');
+
+      // TODO(eliasyishak): Set the telemetry for the unified_analytics
+      //  package as well, the above will be removed once we have
+      //  fully transitioned to using the new package
+      await globals.analytics.setTelemetry(value);
     }
 
     if (argResults?.wasParsed('android-sdk') ?? false) {

packages/flutter_tools/lib/src/globals.dart

@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:intl/date_symbol_data_local.dart';
 import 'package:process/process.dart';
+import 'package:unified_analytics/unified_analytics.dart';
 
 import 'android/android_sdk.dart';
 import 'android/android_studio.dart';
@@ -86,6 +88,22 @@ final BotDetector _defaultBotDetector = BotDetector(
 );
 Future<bool> get isRunningOnBot => botDetector.isRunningOnBot;
 
+// Analytics instance for package:unified_analytics for telemetry
+// reporting for all Flutter and Dart related tooling
+Analytics get analytics => context.get<Analytics>() ?? getDefaultAnalytics();
+Analytics getDefaultAnalytics() {
+
+  initializeDateFormatting();
+  final Analytics defaultAnalytics = Analytics(
+    tool: DashTool.flutterTool,
+    flutterChannel: flutterVersion.channel,
+    flutterVersion: flutterVersion.frameworkVersion,
+    dartVersion: flutterVersion.dartSdkVersion,
+  );
+
+  return defaultAnalytics;
+}
+
 /// Currently active implementation of the file system.
 ///
 /// By default it uses local disk-based implementation. Override this in tests

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

@@ -78,6 +78,9 @@ class FlutterCommandRunner extends CommandRunner<void> {
     argParser.addFlag('suppress-analytics',
         negatable: false,
         help: 'Suppress analytics reporting when this command runs.');
+    argParser.addFlag('disable-telemetry',
+        negatable: false,
+        help: 'Disable telemetry reporting when this command runs.');
     argParser.addOption('packages',
         hide: !verboseHelp,
         help: 'Path to your "package_config.json" file.');
@@ -185,6 +188,11 @@ class FlutterCommandRunner extends CommandRunner<void> {
   Future<void> runCommand(ArgResults topLevelResults) async {
     final Map<Type, Object?> contextOverrides = <Type, Object?>{};
 
+    // If the disable-telemetry flag has been passed, return out
+    if (topLevelResults.wasParsed('disable-telemetry')) {
+      return;
+    }
+
     // Don't set wrapColumns unless the user said to: if it's set, then all
     // wrapping will occur at this width explicitly, and won't adapt if the
     // terminal size changes during a run.

packages/flutter_tools/pubspec.yaml

@@ -48,6 +48,7 @@ dependencies:
   http_multi_server: 3.2.1
   convert: 3.1.1
   async: 2.11.0
+  unified_analytics: 1.0.1
 
   # We depend on very specific internal implementation details of the
   # 'test' package, which change between versions, so when upgrading
@@ -104,4 +105,4 @@ dartdoc:
   # Exclude this package from the hosted API docs.
   nodoc: true
 
-# PUBSPEC CHECKSUM: 7ab7
+# PUBSPEC CHECKSUM: 8913

packages/flutter_tools/test/general.shard/runner/runner_test.dart

@@ -18,6 +18,8 @@ import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/reporting/crash_reporting.dart';
 import 'package:flutter_tools/src/reporting/reporting.dart';
 import 'package:flutter_tools/src/runner/flutter_command.dart';
+import 'package:test/fake.dart';
+import 'package:unified_analytics/unified_analytics.dart';
 
 import '../../src/common.dart';
 import '../../src/context.dart';
@@ -313,6 +315,29 @@ void main() {
       });
     });
   });
+
+    testUsingContext('runner disable telemetry with flag', () async {
+      io.setExitFunctionForTests((int exitCode) {});
+
+      expect(globals.analytics.telemetryEnabled, true);
+      expect(globals.analytics.shouldShowMessage, true);
+
+      await runner.run(
+        <String>['--disable-telemetry'],
+        () => <FlutterCommand>[],
+        // This flutterVersion disables crash reporting.
+        flutterVersion: '[user-branch]/',
+        shutdownHooks: ShutdownHooks(),
+      );
+
+      expect(globals.analytics.telemetryEnabled, false);
+    },
+    overrides: <Type, Generator>{
+      Analytics: () => FakeAnalytics(),
+      FileSystem: () => MemoryFileSystem.test(),
+      ProcessManager: () => FakeProcessManager.any(),
+    },
+  );
 }
 
 class CrashingFlutterCommand extends FlutterCommand {
@@ -451,3 +476,30 @@ class WaitingCrashReporter implements CrashReporter {
     return _future;
   }
 }
+
+/// A fake [Analytics] that will be used to test
+/// the --disable-telemetry flag
+class FakeAnalytics extends Fake implements Analytics {
+  bool _fakeTelemetryStatus = true;
+  bool _fakeShowMessage = true;
+
+  @override
+  String get getConsentMessage => 'message';
+
+  @override
+  bool get shouldShowMessage => _fakeShowMessage;
+
+  @override
+  void clientShowedMessage() {
+    _fakeShowMessage = false;
+  }
+
+  @override
+  Future<void> setTelemetry(bool reportingBool) {
+    _fakeTelemetryStatus = reportingBool;
+    return Future<void>.value();
+  }
+
+  @override
+  bool get telemetryEnabled => _fakeTelemetryStatus;
+}