Allow client to specify a way to convert an absolute path into a g3-r…

…elative path (#2200)

dwds/CHANGELOG.md

@@ -3,6 +3,7 @@
 **Breaking changes**
 
 - Allow clients to specify where to find the package config. - [#2199](https://github.com/dart-lang/webdev/pull/2199).
+- Allow clients to specify a way to convert absolute paths to g3-relative paths. - [#2200](https://github.com/dart-lang/webdev/pull/2200)
 
 ## 20.0.1
 

dwds/lib/dart_web_debug_service.dart

@@ -16,6 +16,7 @@ import 'package:dwds/src/readers/asset_reader.dart';
 import 'package:dwds/src/servers/devtools.dart';
 import 'package:dwds/src/servers/extension_backend.dart';
 import 'package:dwds/src/services/expression_compiler.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:logging/logging.dart';
 import 'package:shelf/shelf.dart';
 import 'package:sse/server/sse_handler.dart';
@@ -87,6 +88,7 @@ class Dwds {
     Future<bool> Function()? isFlutterApp,
   }) async {
     globalLoadStrategy = loadStrategy;
+    globalIsInternalBuild = isInternalBuild;
     isFlutterApp ??= () => Future.value(true);
 
     DevTools? devTools;

dwds/lib/src/debugging/classes.dart

@@ -3,9 +3,9 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:dwds/src/debugging/metadata/class.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/services/chrome_debug_exception.dart';
 import 'package:dwds/src/utilities/domain.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/shared.dart';
 import 'package:vm_service/vm_service.dart';
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';

dwds/lib/src/debugging/debugger.dart

@@ -9,10 +9,10 @@ import 'package:dwds/src/debugging/frame_computer.dart';
 import 'package:dwds/src/debugging/location.dart';
 import 'package:dwds/src/debugging/remote_debugger.dart';
 import 'package:dwds/src/debugging/skip_list.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/services/chrome_debug_exception.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
 import 'package:dwds/src/utilities/domain.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/objects.dart' show Property;
 import 'package:dwds/src/utilities/server.dart';
 import 'package:dwds/src/utilities/shared.dart';

dwds/lib/src/debugging/inspector.dart

@@ -14,11 +14,11 @@ import 'package:dwds/src/debugging/instance.dart';
 import 'package:dwds/src/debugging/libraries.dart';
 import 'package:dwds/src/debugging/location.dart';
 import 'package:dwds/src/debugging/remote_debugger.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/readers/asset_reader.dart';
 import 'package:dwds/src/utilities/conversions.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
 import 'package:dwds/src/utilities/domain.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/objects.dart';
 import 'package:dwds/src/utilities/server.dart';
 import 'package:dwds/src/utilities/shared.dart';

dwds/lib/src/debugging/instance.dart

@@ -7,9 +7,9 @@ import 'dart:math';
 import 'package:dwds/src/debugging/inspector.dart';
 import 'package:dwds/src/debugging/metadata/class.dart';
 import 'package:dwds/src/debugging/metadata/function.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/utilities/conversions.dart';
 import 'package:dwds/src/utilities/domain.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/objects.dart';
 import 'package:dwds/src/utilities/shared.dart';
 import 'package:logging/logging.dart';

dwds/lib/src/debugging/libraries.dart

@@ -4,9 +4,9 @@
 
 import 'package:collection/collection.dart';
 import 'package:dwds/src/debugging/metadata/class.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/services/chrome_debug_exception.dart';
 import 'package:dwds/src/utilities/domain.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:logging/logging.dart';
 import 'package:vm_service/vm_service.dart';
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';

dwds/lib/src/debugging/location.dart

@@ -4,9 +4,9 @@
 
 import 'package:async/async.dart';
 import 'package:dwds/src/debugging/modules.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/readers/asset_reader.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:logging/logging.dart';
 import 'package:path/path.dart' as p;
 import 'package:source_maps/parser.dart';

dwds/lib/src/debugging/metadata/class.dart

@@ -2,9 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/services/chrome_debug_exception.dart';
 import 'package:dwds/src/utilities/domain.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:logging/logging.dart';
 import 'package:vm_service/vm_service.dart';
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';

dwds/lib/src/debugging/metadata/function.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:dwds/src/debugging/remote_debugger.dart';
-import 'package:dwds/src/loaders/strategy.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/server.dart';
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';
 

dwds/lib/src/debugging/modules.dart

@@ -3,8 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:async/async.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:logging/logging.dart';
 
 /// Tracks modules for the compiled application.

dwds/lib/src/loaders/legacy.dart

@@ -76,6 +76,11 @@ class LegacyStrategy extends LoadStrategy {
   ///
   final String? Function(String entrypoint) _packageConfigLocator;
 
+  /// Returns the relative path in google3, determined by the [absolutePath].
+  ///
+  /// Returns `null` if not a google3 app.
+  final String? Function(String absolutePath) _g3RelativePath;
+
   final Uri? _appEntrypoint;
 
   LegacyStrategy(
@@ -88,6 +93,7 @@ class LegacyStrategy extends LoadStrategy {
     AssetReader assetReader,
     this._appEntrypoint,
     this._packageConfigLocator,
+    this._g3RelativePath,
   ) : super(assetReader);
 
   @override
@@ -137,4 +143,7 @@ class LegacyStrategy extends LoadStrategy {
   @override
   String? packageConfigLocator(String entrypoint) =>
       _packageConfigLocator(entrypoint);
+
+  @override
+  String? g3RelativePath(String absolutePath) => _g3RelativePath(absolutePath);
 }

dwds/lib/src/loaders/require.dart

@@ -286,4 +286,7 @@ if(!window.\$requireLoader) {
 
   @override
   String? packageConfigLocator(String entrypoint) => null;
+
+  @override
+  String? g3RelativePath(String absolutePath) => null;
 }

dwds/lib/src/loaders/strategy.dart

@@ -9,12 +9,6 @@ import 'package:dwds/src/utilities/dart_uri.dart';
 import 'package:path/path.dart' as p;
 import 'package:shelf/shelf.dart';
 
-late LoadStrategy _globalLoadStrategy;
-
-set globalLoadStrategy(LoadStrategy strategy) => _globalLoadStrategy = strategy;
-
-LoadStrategy get globalLoadStrategy => _globalLoadStrategy;
-
 abstract class LoadStrategy {
   final AssetReader _assetReader;
   final _providers = <String, MetadataProvider>{};
@@ -116,6 +110,11 @@ abstract class LoadStrategy {
   ///
   String? packageConfigLocator(String entrypoint);
 
+  /// Returns the relative path in google3, determined by the [absolutePath].
+  ///
+  /// Returns `null` if not a google3 app.
+  String? g3RelativePath(String absolutePath);
+
   /// The absolute path to the app's package config, or null if not provided by
   /// [packageConfigLocator].
   String get packageConfigPath {

dwds/lib/src/services/chrome_proxy_service.dart

@@ -18,12 +18,12 @@ import 'package:dwds/src/debugging/modules.dart';
 import 'package:dwds/src/debugging/remote_debugger.dart';
 import 'package:dwds/src/debugging/skip_list.dart';
 import 'package:dwds/src/events.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/readers/asset_reader.dart';
 import 'package:dwds/src/services/batched_expression_evaluator.dart';
 import 'package:dwds/src/services/expression_compiler.dart';
 import 'package:dwds/src/services/expression_evaluator.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/shared.dart';
 import 'package:logging/logging.dart' hide LogRecord;
 import 'package:pub_semver/pub_semver.dart' as semver;
@@ -989,6 +989,8 @@ ${globalLoadStrategy.loadModuleSnippet}("dart_sdk").developer.invokeExtension(
 
   // Note: Ignore the optional local parameter, it is there to keep the method
   // signature consistent with the VM service interface.
+  // TODO(https://github.com/dart-lang/webdev/issues/2198): Add support for g3-
+  // relative URIs, and support the `local` parameter.
   @override
   Future<UriList> lookupResolvedPackageUris(
     String isolateId,

dwds/lib/src/services/expression_evaluator.dart

@@ -6,11 +6,11 @@ import 'package:dwds/src/debugging/dart_scope.dart';
 import 'package:dwds/src/debugging/debugger.dart';
 import 'package:dwds/src/debugging/location.dart';
 import 'package:dwds/src/debugging/modules.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/services/expression_compiler.dart';
 import 'package:dwds/src/services/javascript_builder.dart';
 import 'package:dwds/src/utilities/conversions.dart';
 import 'package:dwds/src/utilities/domain.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/objects.dart' as chrome;
 import 'package:logging/logging.dart';
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';

dwds/lib/src/utilities/dart_uri.dart

@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:dwds/src/loaders/strategy.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:logging/logging.dart';
 import 'package:package_config/package_config.dart';
 import 'package:path/path.dart' as p;
@@ -134,11 +134,29 @@ class DartUri {
   static final Map<String, String> _resolvedUriToUri = {};
 
   /// Returns package, app, or dart uri for a resolved path.
-  static String? toPackageUri(String uri) => _resolvedUriToUri[uri];
+  static String? toPackageUri(String uri) {
+    final packageUri = _resolvedUriToUri[uri];
+    if (packageUri != null) return packageUri;
+
+    // If this is an internal app, then the given uri might be g3-relative:
+    if (globalIsInternalBuild) {
+      // TODO(https://github.com/dart-lang/webdev/issues/2198): Verify if the
+      // intermediary conversion to resolvedUri is causing performance issues.
+      final resolvedUri = _g3RelativeUriToResolvedUri[uri];
+      return _resolvedUriToUri[resolvedUri];
+    }
+
+    return null;
+  }
 
   /// Returns resolved path for a package, app, or dart uri.
   static String? toResolvedUri(String uri) => _uriToResolvedUri[uri];
 
+  /// Returns a resolved path for a g3-relative URI.
+  ///
+  /// This map is empty if not a google3 app.
+  static final Map<String, String> _g3RelativeUriToResolvedUri = {};
+
   /// The directory in which we're running.
   ///
   /// We store this here because for tests we may want to act as if we're
@@ -166,6 +184,19 @@ class DartUri {
   static void recordAbsoluteUris(Iterable<String> libraryUris) {
     for (var uri in libraryUris) {
       _recordAbsoluteUri(uri);
+      if (globalIsInternalBuild) {
+        _recordG3RelativeUri(uri);
+      }
+    }
+  }
+
+  static void _recordG3RelativeUri(String libraryUri) {
+    final absoluteUri = _uriToResolvedUri[libraryUri];
+    if (absoluteUri == null) return;
+
+    final g3RelativeUri = globalLoadStrategy.g3RelativePath(absoluteUri);
+    if (g3RelativeUri != null) {
+      _g3RelativeUriToResolvedUri[g3RelativeUri] = absoluteUri;
     }
   }
 

dwds/lib/src/utilities/globals.dart

@@ -0,0 +1,16 @@
+// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:dwds/src/loaders/strategy.dart';
+
+/// The load strategy for the connected app.
+late LoadStrategy _globalLoadStrategy;
+set globalLoadStrategy(LoadStrategy strategy) => _globalLoadStrategy = strategy;
+LoadStrategy get globalLoadStrategy => _globalLoadStrategy;
+
+/// Whether or not the connected app is an internal (e.g. google3) app.
+bool get globalIsInternalBuild => _isInternalBuild ?? false;
+bool? _isInternalBuild;
+set globalIsInternalBuild(bool isInternalBuild) =>
+    _isInternalBuild = isInternalBuild;

dwds/test/chrome_proxy_service_test.dart

@@ -9,9 +9,9 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/services/chrome_proxy_service.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:dwds/src/utilities/shared.dart';
 import 'package:http/http.dart' as http;
 import 'package:path/path.dart' as path;

dwds/test/dart_uri_test.dart

@@ -6,8 +6,9 @@
 @Timeout(Duration(minutes: 2))
 
 import 'package:dwds/asset_reader.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
+import 'package:dwds/src/utilities/globals.dart';
+import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
 import 'package:test_common/logging.dart';
 
@@ -34,9 +35,21 @@ class TestStrategy extends FakeStrategy {
   }
 }
 
+class G3TestStrategy extends FakeStrategy {
+  G3TestStrategy(
+    AssetReader assetReader,
+  ) : super(assetReader);
+
+  @override
+  String? g3RelativePath(String absolutePath) =>
+      'g3:///${p.split(absolutePath).last}';
+}
+
 void main() {
-  globalLoadStrategy = TestStrategy(FakeAssetReader());
   group('DartUri', () {
+    setUpAll(() {
+      globalLoadStrategy = TestStrategy(FakeAssetReader());
+    });
     test('parses package : paths', () {
       final uri = DartUri('package:path/path.dart');
       expect(uri.serverPath, 'packages/path/path.dart');
@@ -185,4 +198,29 @@ void main() {
       );
     });
   });
+
+  group('initialized to handle g3-relative paths', () {
+    setUpAll(() {
+      globalLoadStrategy = G3TestStrategy(FakeAssetReader());
+    });
+
+    setUpAll(() async {
+      await DartUri.initialize();
+      globalIsInternalBuild = true;
+      DartUri.recordAbsoluteUris(['package:path/path.dart']);
+    });
+
+    tearDownAll(() {
+      DartUri.clear();
+      globalIsInternalBuild = false;
+    });
+
+    test(
+      'can resolve g3-relative paths',
+      () {
+        final resolved = DartUri.toPackageUri('g3:///path.dart');
+        expect(resolved, 'package:path/path.dart');
+      },
+    );
+  });
 }

dwds/test/debugger_test.dart

@@ -12,7 +12,7 @@ import 'package:dwds/src/debugging/frame_computer.dart';
 import 'package:dwds/src/debugging/inspector.dart';
 import 'package:dwds/src/debugging/location.dart';
 import 'package:dwds/src/debugging/skip_list.dart';
-import 'package:dwds/src/loaders/strategy.dart';
+import 'package:dwds/src/utilities/globals.dart';
 import 'package:logging/logging.dart';
 import 'package:test/test.dart';
 import 'package:vm_service/vm_service.dart' hide LogRecord;

dwds/test/expression_evaluator_test.dart

@@ -9,9 +9,9 @@ import 'dart:async';
 import 'package:dwds/src/debugging/debugger.dart';
 import 'package:dwds/src/debugging/location.dart';
 import 'package:dwds/src/debugging/skip_list.dart';
-import 'package:dwds/src/loaders/strategy.dart';
 import 'package:dwds/src/services/batched_expression_evaluator.dart';
 import 'package:dwds/src/services/expression_evaluator.dart';
+import 'package:dwds/src/utilities/globals.dart';
 
 import 'package:test/test.dart';
 import 'package:vm_service/vm_service.dart' hide LogRecord;