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Add extensionActivationState endpoint to the devtools server (#6111)
This endpoint manages reading and writing to/from the `devtools_options.yaml` file. This file will store DevTools extension activation states and will live in a project's root directory (similar to `analysis_options.yaml`). Example `devtools_options.yaml` file: ``` extensions: - foo: true - bar: false ``` In this scenario: - the devtools extension for `package:foo` has been enabled by the user - the devtools extension for `package:bar` has been disabled by the user - the devtools extension for some other `package:baz` has been neither enabled nor disabled (meaning that DevTools should prompt the user to activate). This API will be consumed by DevTools app in a follow up PR. work towards #1632
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packages/devtools_shared/lib/src/extensions/extension_activation.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,174 @@ | ||
| // 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. | ||
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| import 'dart:io'; | ||
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| import 'package:collection/collection.dart'; | ||
| import 'package:path/path.dart' as path; | ||
| import 'package:yaml/yaml.dart'; | ||
| import 'package:yaml_edit/yaml_edit.dart'; | ||
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| import 'extension_model.dart'; | ||
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| /// Manages the `devtools_options.yaml` file and allows read / write access. | ||
| class DevToolsOptions { | ||
| static const optionsFileName = 'devtools_options.yaml'; | ||
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| static const _extensionsKey = 'extensions'; | ||
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| static const _defaultOptions = ''' | ||
| $_extensionsKey: | ||
| '''; | ||
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| /// Returns the current activation state for [extensionName] in the | ||
| /// 'devtools_options.yaml' file at [rootUri]. | ||
| /// | ||
| /// If the 'devtools_options.yaml' file does not exist, it will be created | ||
| /// with an empty set of extensions. | ||
| ExtensionActivationState lookupExtensionActivationState({ | ||
| required Uri rootUri, | ||
| required String extensionName, | ||
| }) { | ||
| final options = _optionsAsMap(rootUri: rootUri); | ||
| if (options == null) return ExtensionActivationState.error; | ||
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| final extensions = | ||
| (options[_extensionsKey] as List?)?.cast<Map<String, Object?>>(); | ||
| if (extensions == null) return ExtensionActivationState.none; | ||
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| for (final e in extensions) { | ||
| // Each entry should only have one key / value pair (e.g. '- foo: true'). | ||
| assert(e.keys.length == 1); | ||
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| if (e.keys.first == extensionName) { | ||
| return _extensionStateForValue(e[extensionName]); | ||
| } | ||
| } | ||
| return ExtensionActivationState.none; | ||
| } | ||
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| /// Sets the activation state for [extensionName] in the | ||
| /// 'devtools_options.yaml' file at [rootUri]. | ||
| /// | ||
| /// If the 'devtools_options.yaml' file does not exist, it will be created. | ||
| ExtensionActivationState setExtensionActivationState({ | ||
| required Uri rootUri, | ||
| required String extensionName, | ||
| required bool activate, | ||
| }) { | ||
| final options = _optionsAsMap(rootUri: rootUri); | ||
| if (options == null) return ExtensionActivationState.error; | ||
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| var extensions = | ||
| (options[_extensionsKey] as List?)?.cast<Map<String, Object?>>(); | ||
| if (extensions == null) { | ||
| options[_extensionsKey] = <Map<String, Object?>>[]; | ||
| extensions = options[_extensionsKey] as List<Map<String, Object?>>; | ||
| } | ||
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| // Write the new activation state to the map. | ||
| final extension = extensions.firstWhereOrNull( | ||
| (e) => e.keys.first == extensionName, | ||
| ); | ||
| if (extension == null) { | ||
| extensions.add({extensionName: activate}); | ||
| } else { | ||
| extension[extensionName] = activate; | ||
| } | ||
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| _writeToOptionsFile(rootUri: rootUri, options: options); | ||
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| // Lookup the activation state from the file we just wrote to to ensure that | ||
| // are not returning an out of sync result. | ||
| return lookupExtensionActivationState( | ||
| rootUri: rootUri, | ||
| extensionName: extensionName, | ||
| ); | ||
| } | ||
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| /// Returns the content of the `devtools_options.yaml` file at [rootUri] as a | ||
| /// Map. | ||
| Map<String, Object?>? _optionsAsMap({required Uri rootUri}) { | ||
| final optionsFile = _lookupOptionsFile(rootUri); | ||
| if (optionsFile == null) return null; | ||
| final yamlMap = loadYaml(optionsFile.readAsStringSync()) as YamlMap; | ||
| return yamlMap.toDartMap(); | ||
| } | ||
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| /// Writes the `devtools_options.yaml` file at [rootUri] with the value of | ||
| /// [options] as YAML. | ||
| /// | ||
| /// Any existing content in `devtools_options.yaml` will be overwritten. | ||
| void _writeToOptionsFile({ | ||
| required Uri rootUri, | ||
| required Map<String, Object?> options, | ||
| }) { | ||
| final yamlEditor = YamlEditor(''); | ||
| yamlEditor.update([], options); | ||
| _lookupOptionsFile(rootUri)?.writeAsStringSync(yamlEditor.toString()); | ||
| } | ||
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| /// Returns the `devtools_options.yaml` file in the [rootUri] directory. | ||
| /// | ||
| /// Returns null if the directory at [rootUri] does not exist. Otherwise, if | ||
| /// the `devtools_options.yaml` does not already exist, it will be created | ||
| /// and written with [_defaultOptions], and then returned. | ||
| File? _lookupOptionsFile(Uri rootUri) { | ||
| final rootDir = Directory.fromUri(rootUri); | ||
| if (!rootDir.existsSync()) { | ||
| print('Directory does not exist at path: ${rootUri.toString()}'); | ||
| return null; | ||
| } | ||
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| final optionsFile = File(path.join(rootDir.path, optionsFileName)); | ||
| if (!optionsFile.existsSync()) { | ||
| optionsFile | ||
| ..createSync() | ||
| ..writeAsStringSync(_defaultOptions); | ||
| } | ||
| return optionsFile; | ||
| } | ||
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| ExtensionActivationState _extensionStateForValue(Object? value) { | ||
| switch (value) { | ||
| case true: | ||
| return ExtensionActivationState.enabled; | ||
| case false: | ||
| return ExtensionActivationState.disabled; | ||
| default: | ||
| return ExtensionActivationState.none; | ||
| } | ||
| } | ||
| } | ||
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| extension YamlExtension on YamlMap { | ||
| Map<String, Object?> toDartMap() { | ||
| final map = <String, Object?>{}; | ||
| for (final entry in nodes.entries) { | ||
| map[entry.key.toString()] = entry.value.convertToDartType(); | ||
| } | ||
| return map; | ||
| } | ||
| } | ||
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| extension YamlListExtension on YamlList { | ||
| List<Object?> toDartList() { | ||
| final list = <Object>[]; | ||
| for (final e in nodes) { | ||
| final element = e.convertToDartType(); | ||
| if (element != null) list.add(element); | ||
| } | ||
| return list; | ||
| } | ||
| } | ||
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| extension YamlNodeExtension on YamlNode { | ||
| Object? convertToDartType() { | ||
| return switch (this) { | ||
| YamlMap() => (this as YamlMap).toDartMap(), | ||
| YamlList() => (this as YamlList).toDartList(), | ||
| _ => value, | ||
| }; | ||
| } | ||
| } |
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