[flutter_conductor] allow --force to override validations on start su…

…b-command (flutter#93514)

dev/conductor/core/lib/src/globals.dart

@@ -9,6 +9,7 @@ import 'proto/conductor_state.pb.dart' as pb;
 const String gsutilBinary = 'gsutil.py';
 
 const String kFrameworkDefaultBranch = 'master';
+const String kForceFlag = 'force';
 
 const List<String> kReleaseChannels = <String>[
   'stable',
@@ -81,6 +82,18 @@ String? getValueFromEnvOrArgs(
     'to be provided!');
 }
 
+bool getBoolFromEnvOrArgs(
+  String name,
+  ArgResults argResults,
+  Map<String, String> env,
+) {
+  final String envName = fromArgToEnvName(name);
+  if (env[envName] != null) {
+    return (env[envName]?.toUpperCase()) == 'TRUE';
+  }
+  return argResults[name] as bool;
+}
+
 /// Return multiple values from the environment or fall back to [argResults].
 ///
 /// Values read from an environment variable are assumed to be comma-delimited.

dev/conductor/core/lib/src/next.dart

@@ -14,7 +14,6 @@ import './stdio.dart';
 
 const String kStateOption = 'state-file';
 const String kYesFlag = 'yes';
-const String kForceFlag = 'force';
 
 /// Command to proceed from one [pb.ReleasePhase] to the next.
 class NextCommand extends Command<void> {

dev/conductor/core/lib/src/start.dart

@@ -102,6 +102,11 @@ class StartCommand extends Command<void> {
         'n': 'Indicates a hotfix to a dev or beta release.',
       },
     );
+    argParser.addFlag(
+      kForceFlag,
+      abbr: 'f',
+      help: 'Override all validations of the command line inputs.',
+    );
   }
 
   final Checkouts checkouts;
@@ -178,6 +183,11 @@ class StartCommand extends Command<void> {
       argumentResults,
       platform.environment,
     )!;
+    final bool force = getBoolFromEnvOrArgs(
+      kForceFlag,
+      argumentResults,
+      platform.environment,
+    );
     final File stateFile = checkouts.fileSystem.file(
       getValueFromEnvOrArgs(kStateOption, argumentResults, platform.environment),
     );
@@ -198,6 +208,7 @@ class StartCommand extends Command<void> {
       releaseChannel: releaseChannel,
       stateFile: stateFile,
       stdio: stdio,
+      force: force,
     );
     return context.run();
   }
@@ -223,6 +234,7 @@ class StartContext {
     required this.releaseChannel,
     required this.stateFile,
     required this.stdio,
+    this.force = false,
   }) : git = Git(processManager);
 
   final String candidateBranch;
@@ -242,6 +254,9 @@ class StartContext {
   final File stateFile;
   final Stdio stdio;
 
+  /// If validations should be overridden.
+  final bool force;
+
   Future<void> run() async {
     if (stateFile.existsSync()) {
       throw ConductorException(
@@ -361,7 +376,12 @@ class StartContext {
     final Version lastVersion = Version.fromString(await framework.getFullTag(
         framework.upstreamRemote.name, candidateBranch,
         exact: false,
-    ))..ensureValid(candidateBranch, incrementLetter);
+    ));
+    // [force] means we know this would fail but need to publish anyway
+    if (!force) {
+      lastVersion.ensureValid(candidateBranch, incrementLetter);
+    }
+
     Version nextVersion = calculateNextVersion(lastVersion);
     nextVersion = await ensureBranchPointTagged(nextVersion, framework);
 

dev/conductor/core/lib/src/version.dart

@@ -238,12 +238,18 @@ class Version {
   final int y;
 
   /// Number of hotfix releases after a stable release.
+  ///
+  /// For non-stable releases, this will be 0.
   final int z;
 
   /// Zero-indexed count of dev releases after a beta release.
+  ///
+  /// For stable releases, this will be null.
   final int? m;
 
   /// Number of hotfixes required to make a dev release.
+  ///
+  /// For stable releases, this will be null.
   final int? n;
 
   /// Number of commits past last tagged dev release.

dev/conductor/core/test/globals_test.dart

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:args/args.dart';
 import 'package:conductor_core/src/globals.dart';
 import 'package:conductor_core/src/proto/conductor_state.pb.dart' as pb;
 
@@ -129,4 +130,69 @@ void main() {
       );
     });
   });
+
+  group('getBoolFromEnvOrArgs', () {
+    const String flagName = 'a-cli-flag';
+
+    test('prefers env over argResults', () {
+      final ArgResults argResults = FakeArgs(results: <String, Object>{
+        flagName: false,
+      });
+      final Map<String, String> env = <String, String>{'A_CLI_FLAG': 'TRUE'};
+      final bool result = getBoolFromEnvOrArgs(
+        flagName,
+        argResults,
+        env,
+      );
+      expect(result, true);
+    });
+
+    test('falls back to argResults if env is empty', () {
+      final ArgResults argResults = FakeArgs(results: <String, Object>{
+        flagName: false,
+      });
+      final Map<String, String> env = <String, String>{};
+      final bool result = getBoolFromEnvOrArgs(
+        flagName,
+        argResults,
+        env,
+      );
+      expect(result, false);
+    });
+  });
+}
+
+class FakeArgs implements ArgResults {
+  FakeArgs({
+    this.arguments = const <String>[],
+    this.name = 'fake-command',
+    this.results = const <String, Object>{},
+  });
+
+  final Map<String, Object> results;
+
+  @override
+  final List<String> arguments;
+
+  @override
+  final String name;
+
+  @override
+  ArgResults? get command => throw Exception('Unimplemented');
+
+  @override
+  List<String> get rest => throw Exception('Unimplemented');
+
+  @override
+  Iterable<String> get options => throw Exception('Unimplemented');
+
+  @override
+  bool wasParsed(String name) {
+    return results[name] != null;
+  }
+
+  @override
+  Object? operator[](String name) {
+    return results[name];
+  }
 }

dev/conductor/core/test/start_test.dart

@@ -5,6 +5,7 @@
 import 'dart:convert' show jsonDecode;
 
 import 'package:args/command_runner.dart';
+import 'package:conductor_core/src/globals.dart';
 import 'package:conductor_core/src/proto/conductor_state.pb.dart' as pb;
 import 'package:conductor_core/src/proto/conductor_state.pbenum.dart' show ReleasePhase;
 import 'package:conductor_core/src/repository.dart';
@@ -122,6 +123,188 @@ void main() {
       );
     });
 
+    test('does not fail if version wrong but --force provided', () async {
+      const String revision2 = 'def789';
+      const String revision3 = '123abc';
+      const String previousDartRevision = '171876a4e6cf56ee6da1f97d203926bd7afda7ef';
+      const String nextDartRevision = 'f6c91128be6b77aef8351e1e3a9d07c85bc2e46e';
+      const String previousVersion = '1.2.0-1.0.pre';
+      // This is what this release will be
+      const String nextVersion = '1.2.0-1.1.pre';
+      const String incrementLevel = 'n';
+
+      final Directory engine = fileSystem.directory(checkoutsParentDirectory)
+          .childDirectory('flutter_conductor_checkouts')
+          .childDirectory('engine');
+
+      final File depsFile = engine.childFile('DEPS');
+
+      final List<FakeCommand> engineCommands = <FakeCommand>[
+        FakeCommand(
+          command: <String>[
+            'git',
+            'clone',
+            '--origin',
+            'upstream',
+            '--',
+            EngineRepository.defaultUpstream,
+            engine.path,
+          ],
+          onRun: () {
+            // Create the DEPS file which the tool will update
+            engine.createSync(recursive: true);
+            depsFile.writeAsStringSync(generateMockDeps(previousDartRevision));
+          }
+        ),
+        const FakeCommand(
+          command: <String>['git', 'remote', 'add', 'mirror', engineMirror],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'fetch', 'mirror'],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'checkout', 'upstream/$candidateBranch'],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'rev-parse', 'HEAD'],
+          stdout: revision2,
+        ),
+        const FakeCommand(
+          command: <String>[
+            'git',
+            'checkout',
+            '-b',
+            'cherrypicks-$candidateBranch',
+          ],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'status', '--porcelain'],
+          stdout: 'MM path/to/DEPS',
+        ),
+        const FakeCommand(
+          command: <String>['git', 'add', '--all'],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'commit', "--message='Update Dart SDK to $nextDartRevision'"],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'rev-parse', 'HEAD'],
+          stdout: revision2,
+        ),
+        const FakeCommand(
+          command: <String>['git', 'rev-parse', 'HEAD'],
+          stdout: revision2,
+        ),
+      ];
+
+      final List<FakeCommand> frameworkCommands = <FakeCommand>[
+        FakeCommand(
+          command: <String>[
+            'git',
+            'clone',
+            '--origin',
+            'upstream',
+            '--',
+            FrameworkRepository.defaultUpstream,
+            fileSystem.path.join(
+              checkoutsParentDirectory,
+              'flutter_conductor_checkouts',
+              'framework',
+            ),
+          ],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'remote', 'add', 'mirror', frameworkMirror],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'fetch', 'mirror'],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'checkout', 'upstream/$candidateBranch'],
+        ),
+        const FakeCommand(
+          command: <String>['git', 'rev-parse', 'HEAD'],
+          stdout: revision3,
+        ),
+        const FakeCommand(
+          command: <String>[
+            'git',
+            'checkout',
+            '-b',
+            'cherrypicks-$candidateBranch',
+          ],
+        ),
+        const FakeCommand(
+          command: <String>[
+            'git',
+            'describe',
+            '--match',
+            '*.*.*',
+            '--tags',
+            'refs/remotes/upstream/$candidateBranch',
+          ],
+          stdout: '$previousVersion-42-gabc123',
+        ),
+        const FakeCommand(
+          command: <String>['git', 'rev-parse', 'HEAD'],
+          stdout: revision3,
+        ),
+      ];
+
+      final CommandRunner<void> runner = createRunner(
+        commands: <FakeCommand>[
+          ...engineCommands,
+          ...frameworkCommands,
+        ],
+      );
+
+      final String stateFilePath = fileSystem.path.join(
+        platform.environment['HOME']!,
+        kStateFileName,
+      );
+
+      await runner.run(<String>[
+        'start',
+        '--$kFrameworkMirrorOption',
+        frameworkMirror,
+        '--$kEngineMirrorOption',
+        engineMirror,
+        '--$kCandidateOption',
+        candidateBranch,
+        '--$kReleaseOption',
+        releaseChannel,
+        '--$kStateOption',
+        stateFilePath,
+        '--$kDartRevisionOption',
+        nextDartRevision,
+        '--$kIncrementOption',
+        incrementLevel,
+        '--$kForceFlag',
+      ]);
+
+      final File stateFile = fileSystem.file(stateFilePath);
+
+      final pb.ConductorState state = pb.ConductorState();
+      state.mergeFromProto3Json(
+        jsonDecode(stateFile.readAsStringSync()),
+      );
+
+      expect(processManager.hasRemainingExpectations, false);
+      expect(state.isInitialized(), true);
+      expect(state.releaseChannel, releaseChannel);
+      expect(state.releaseVersion, nextVersion);
+      expect(state.engine.candidateBranch, candidateBranch);
+      expect(state.engine.startingGitHead, revision2);
+      expect(state.engine.dartRevision, nextDartRevision);
+      expect(state.engine.upstream.url, '[email protected]:flutter/engine.git');
+      expect(state.framework.candidateBranch, candidateBranch);
+      expect(state.framework.startingGitHead, revision3);
+      expect(state.framework.upstream.url, '[email protected]:flutter/flutter.git');
+      expect(state.currentPhase, ReleasePhase.APPLY_ENGINE_CHERRYPICKS);
+      expect(state.conductorVersion, conductorVersion);
+      expect(state.incrementLevel, incrementLevel);
+    });
+
     test('creates state file if provided correct inputs', () async {
       const String revision2 = 'def789';
       const String revision3 = '123abc';