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[ci] Check repo-level package metadata (flutter#5811)
Adds a new tool command (and runs it in CI) to check that each package: - is listed correctly in the repo-level README.md table - has a CODEOWNERS entry In the future we could add other things (e.g., auto-label), but these were the main things we've had issues with recently. Updates README.md and CODEOWNERS to fix failures it found: - Adds a couple of missing CODEOWNERS - Expands the web implementation CODEOWNERS to individual packages so that we don't have to special-case handling in the tool - Fixes some minor mistakes in README.md - URL-encodes all `:`s in the README.md links (which is why ever line shows as changed); it worked without that in practice, but it should really be encoded, and having it consistently encoded made things easier for the tooling.
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Validating CODEOWNERS rules …
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205
script/tool/lib/src/repo_package_info_check_command.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,205 @@ | ||
| // Copyright 2013 The Flutter Authors. 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 'package:file/file.dart'; | ||
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| import 'common/core.dart'; | ||
| import 'common/output_utils.dart'; | ||
| import 'common/package_looping_command.dart'; | ||
| import 'common/repository_package.dart'; | ||
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| const int _exitBadTableEntry = 3; | ||
| const int _exitUnknownPackageEntry = 4; | ||
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| /// A command to verify repository-level metadata about packages, such as | ||
| /// repo README and CODEOWNERS entries. | ||
| class RepoPackageInfoCheckCommand extends PackageLoopingCommand { | ||
| /// Creates Dependabot check command instance. | ||
| RepoPackageInfoCheckCommand(super.packagesDir, {super.gitDir}); | ||
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| late Directory _repoRoot; | ||
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| /// Data from the root README.md table of packages. | ||
| final Map<String, List<String>> _readmeTableEntries = | ||
| <String, List<String>>{}; | ||
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| /// Packages with entries in CODEOWNERS. | ||
| final List<String> _ownedPackages = <String>[]; | ||
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| @override | ||
| final String name = 'repo-package-info-check'; | ||
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| @override | ||
| List<String> get aliases => <String>['check-repo-package-info']; | ||
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| @override | ||
| final String description = | ||
| 'Checks that all packages are listed correctly in the repo README.'; | ||
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| @override | ||
| final bool hasLongOutput = false; | ||
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| @override | ||
| Future<void> initializeRun() async { | ||
| _repoRoot = packagesDir.fileSystem.directory((await gitDir).path); | ||
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| // Extract all of the README.md table entries. | ||
| final RegExp namePattern = RegExp(r'\[(.*?)\]\('); | ||
| for (final String line | ||
| in _repoRoot.childFile('README.md').readAsLinesSync()) { | ||
| // Find all the table entries, skipping the header. | ||
| if (line.startsWith('|') && | ||
| !line.startsWith('| Package') && | ||
| !line.startsWith('|-')) { | ||
| final List<String> cells = line | ||
| .split('|') | ||
| .map((String s) => s.trim()) | ||
| .where((String s) => s.isNotEmpty) | ||
| .toList(); | ||
| // Extract the name, removing any markdown escaping. | ||
| final String? name = | ||
| namePattern.firstMatch(cells[0])?.group(1)?.replaceAll(r'\_', '_'); | ||
| if (name == null) { | ||
| printError('Unexpected README table line:\n $line'); | ||
| throw ToolExit(_exitBadTableEntry); | ||
| } | ||
| _readmeTableEntries[name] = cells; | ||
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| if (!(packagesDir.childDirectory(name).existsSync() || | ||
| thirdPartyPackagesDir.childDirectory(name).existsSync())) { | ||
| printError('Unknown package "$name" in root README.md table.'); | ||
| throw ToolExit(_exitUnknownPackageEntry); | ||
| } | ||
| } | ||
| } | ||
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| // Extract all of the CODEOWNERS package entries. | ||
| final RegExp packageOwnershipPattern = | ||
| RegExp(r'^((?:third_party/)?packages/(?:[^/]*/)?([^/]*))/\*\*'); | ||
| for (final String line | ||
| in _repoRoot.childFile('CODEOWNERS').readAsLinesSync()) { | ||
| final RegExpMatch? match = packageOwnershipPattern.firstMatch(line); | ||
| if (match == null) { | ||
| continue; | ||
| } | ||
| final String path = match.group(1)!; | ||
| final String name = match.group(2)!; | ||
| if (!_repoRoot.childDirectory(path).existsSync()) { | ||
| printError('Unknown directory "$path" in CODEOWNERS'); | ||
| throw ToolExit(_exitUnknownPackageEntry); | ||
| } | ||
| _ownedPackages.add(name); | ||
| } | ||
| } | ||
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| @override | ||
| Future<PackageResult> runForPackage(RepositoryPackage package) async { | ||
| final String packageName = package.directory.basename; | ||
| final List<String> errors = <String>[]; | ||
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| // All packages should have an owner. | ||
| // Platform interface packages are considered to be owned by the app-facing | ||
| // package owner. | ||
| if (!(_ownedPackages.contains(packageName) || | ||
| package.isPlatformInterface && | ||
| _ownedPackages.contains(package.directory.parent.basename))) { | ||
| printError('${indentation}Missing CODEOWNERS entry.'); | ||
| errors.add('Missing CODEOWNERS entry'); | ||
| } | ||
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| // Any published package should be in the README table. | ||
| // For federated plugins, only the app-facing package is listed. | ||
| if (package.isPublishable() && | ||
| (!package.isFederated || package.isAppFacing)) { | ||
| final List<String>? cells = _readmeTableEntries[packageName]; | ||
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| if (cells == null) { | ||
| printError('${indentation}Missing repo root README.md table entry'); | ||
| errors.add('Missing repo root README.md table entry'); | ||
| } else { | ||
| // Extract the two parts of a "[label](link)" .md link. | ||
| final RegExp mdLinkPattern = RegExp(r'^\[(.*)\]\((.*)\)$'); | ||
| // Possible link targets. | ||
| for (final String cell in cells) { | ||
| final RegExpMatch? match = mdLinkPattern.firstMatch(cell); | ||
| if (match == null) { | ||
| printError( | ||
| '${indentation}Invalid repo root README.md table entry: "$cell"'); | ||
| errors.add('Invalid root README.md table entry'); | ||
| } else { | ||
| final String encodedIssueTag = | ||
| Uri.encodeComponent(_issueTagForPackage(packageName)); | ||
| final String encodedPRTag = | ||
| Uri.encodeComponent(_prTagForPackage(packageName)); | ||
| final String anchor = match.group(1)!; | ||
| final String target = match.group(2)!; | ||
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| // The anchor should be one of: | ||
| // - The package name (optionally with any underscores escaped) | ||
| // - An image with a name-based link | ||
| // - An image with a tag-based link | ||
| final RegExp packageLink = | ||
| RegExp(r'^!\[.*\]\(https://img.shields.io/pub/.*/' | ||
| '$packageName' | ||
| r'(?:\.svg)?\)$'); | ||
| final RegExp issueTagLink = RegExp( | ||
| r'^!\[.*\]\(https://img.shields.io/github/issues/flutter/flutter/' | ||
| '$encodedIssueTag' | ||
| r'\?label=\)$'); | ||
| final RegExp prTagLink = RegExp( | ||
| r'^!\[.*\]\(https://img.shields.io/github/issues-pr/flutter/packages/' | ||
| '$encodedPRTag' | ||
| r'\?label=\)$'); | ||
| if (!(anchor == packageName || | ||
| anchor == packageName.replaceAll('_', r'\_') || | ||
| packageLink.hasMatch(anchor) || | ||
| issueTagLink.hasMatch(anchor) || | ||
| prTagLink.hasMatch(anchor))) { | ||
| printError( | ||
| '${indentation}Incorrect anchor in root README.md table: "$anchor"'); | ||
| errors.add('Incorrect anchor in root README.md table'); | ||
| } | ||
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| // The link should be one of: | ||
| // - a relative link to the in-repo package | ||
| // - a pub.dev link to the package | ||
| // - a github label link to the package's label | ||
| final RegExp pubDevLink = | ||
| RegExp('^https://pub.dev/packages/$packageName(?:/score)?\$'); | ||
| final RegExp gitHubIssueLink = RegExp( | ||
| '^https://github.com/flutter/flutter/labels/$encodedIssueTag\$'); | ||
| final RegExp gitHubPRLink = RegExp( | ||
| '^https://github.com/flutter/packages/labels/$encodedPRTag\$'); | ||
| if (!(target == './packages/$packageName/' || | ||
| target == './third_party/packages/$packageName/' || | ||
| pubDevLink.hasMatch(target) || | ||
| gitHubIssueLink.hasMatch(target) || | ||
| gitHubPRLink.hasMatch(target))) { | ||
| printError( | ||
| '${indentation}Incorrect link in root README.md table: "$target"'); | ||
| errors.add('Incorrect link in root README.md table'); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| return errors.isEmpty | ||
| ? PackageResult.success() | ||
| : PackageResult.fail(errors); | ||
| } | ||
|
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| String _prTagForPackage(String packageName) => 'p: $packageName'; | ||
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| String _issueTagForPackage(String packageName) { | ||
| switch (packageName) { | ||
| case 'google_maps_flutter': | ||
| return 'p: maps'; | ||
| case 'webview_flutter': | ||
| return 'p: webview'; | ||
| default: | ||
| return 'p: $packageName'; | ||
| } | ||
| } | ||
| } |
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