mirror of
https://github.com/flutter/flutter
synced 2024-10-13 11:42:54 +00:00
534 lines
19 KiB
Dart
534 lines
19 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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/// This script removes published archives from the cloud storage and the
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/// corresponding JSON metadata file that the website uses to determine what
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/// releases are available.
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///
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/// If asked to remove a release that is currently the release on that channel,
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/// it will replace that release with the next most recent release on that
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/// channel.
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import 'dart:async';
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import 'dart:convert';
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import 'dart:io' hide Platform;
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import 'dart:typed_data';
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import 'package:args/args.dart';
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import 'package:path/path.dart' as path;
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import 'package:platform/platform.dart' show Platform, LocalPlatform;
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import 'package:process/process.dart';
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const String gsBase = 'gs://flutter_infra_release';
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const String releaseFolder = '/releases';
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const String gsReleaseFolder = '$gsBase$releaseFolder';
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const String baseUrl = 'https://storage.googleapis.com/flutter_infra_release';
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/// Exception class for when a process fails to run, so we can catch
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/// it and provide something more readable than a stack trace.
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class UnpublishException implements Exception {
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UnpublishException(this.message, [this.result]);
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final String message;
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final ProcessResult result;
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int get exitCode => result?.exitCode ?? -1;
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@override
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String toString() {
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String output = runtimeType.toString();
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if (message != null) {
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output += ': $message';
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}
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final String stderr = result?.stderr as String ?? '';
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if (stderr.isNotEmpty) {
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output += ':\n$stderr';
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}
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return output;
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}
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}
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enum Channel { dev, beta, stable }
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String getChannelName(Channel channel) {
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switch (channel) {
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case Channel.beta:
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return 'beta';
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case Channel.dev:
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return 'dev';
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case Channel.stable:
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return 'stable';
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}
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return null;
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}
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Channel fromChannelName(String name) {
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switch (name) {
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case 'beta':
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return Channel.beta;
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case 'dev':
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return Channel.dev;
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case 'stable':
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return Channel.stable;
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default:
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throw ArgumentError('Invalid channel name.');
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}
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}
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enum PublishedPlatform { linux, macos, windows }
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String getPublishedPlatform(PublishedPlatform platform) {
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switch (platform) {
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case PublishedPlatform.linux:
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return 'linux';
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case PublishedPlatform.macos:
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return 'macos';
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case PublishedPlatform.windows:
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return 'windows';
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}
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return null;
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}
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PublishedPlatform fromPublishedPlatform(String name) {
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switch (name) {
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case 'linux':
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return PublishedPlatform.linux;
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case 'macos':
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return PublishedPlatform.macos;
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case 'windows':
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return PublishedPlatform.windows;
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default:
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throw ArgumentError('Invalid published platform name.');
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}
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}
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/// A helper class for classes that want to run a process, optionally have the
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/// stderr and stdout reported as the process runs, and capture the stdout
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/// properly without dropping any.
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class ProcessRunner {
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/// Creates a [ProcessRunner].
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///
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/// The [processManager], [subprocessOutput], and [platform] arguments must
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/// not be null.
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ProcessRunner({
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this.processManager = const LocalProcessManager(),
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this.subprocessOutput = true,
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this.defaultWorkingDirectory,
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this.platform = const LocalPlatform(),
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}) : assert(subprocessOutput != null),
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assert(processManager != null),
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assert(platform != null) {
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environment = Map<String, String>.from(platform.environment);
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}
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/// The platform to use for a starting environment.
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final Platform platform;
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/// Set [subprocessOutput] to show output as processes run. Stdout from the
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/// process will be printed to stdout, and stderr printed to stderr.
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final bool subprocessOutput;
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/// Set the [processManager] in order to inject a test instance to perform
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/// testing.
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final ProcessManager processManager;
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/// Sets the default directory used when `workingDirectory` is not specified
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/// to [runProcess].
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final Directory defaultWorkingDirectory;
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/// The environment to run processes with.
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Map<String, String> environment;
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/// Run the command and arguments in `commandLine` as a sub-process from
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/// `workingDirectory` if set, or the [defaultWorkingDirectory] if not. Uses
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/// [Directory.current] if [defaultWorkingDirectory] is not set.
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///
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/// Set `failOk` if [runProcess] should not throw an exception when the
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/// command completes with a non-zero exit code.
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Future<String> runProcess(
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List<String> commandLine, {
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Directory workingDirectory,
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bool failOk = false,
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}) async {
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workingDirectory ??= defaultWorkingDirectory ?? Directory.current;
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if (subprocessOutput) {
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stderr.write('Running "${commandLine.join(' ')}" in ${workingDirectory.path}.\n');
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}
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final List<int> output = <int>[];
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final Completer<void> stdoutComplete = Completer<void>();
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final Completer<void> stderrComplete = Completer<void>();
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Process process;
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Future<int> allComplete() async {
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await stderrComplete.future;
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await stdoutComplete.future;
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return process.exitCode;
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}
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try {
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process = await processManager.start(
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commandLine,
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workingDirectory: workingDirectory.absolute.path,
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environment: environment,
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);
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process.stdout.listen(
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(List<int> event) {
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output.addAll(event);
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if (subprocessOutput) {
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stdout.add(event);
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}
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},
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onDone: () async => stdoutComplete.complete(),
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);
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if (subprocessOutput) {
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process.stderr.listen(
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(List<int> event) {
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stderr.add(event);
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},
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onDone: () async => stderrComplete.complete(),
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);
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} else {
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stderrComplete.complete();
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}
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} on ProcessException catch (e) {
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final String message = 'Running "${commandLine.join(' ')}" in ${workingDirectory.path} '
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'failed with:\n${e.toString()}';
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throw UnpublishException(message);
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} on ArgumentError catch (e) {
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final String message = 'Running "${commandLine.join(' ')}" in ${workingDirectory.path} '
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'failed with:\n${e.toString()}';
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throw UnpublishException(message);
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}
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final int exitCode = await allComplete();
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if (exitCode != 0 && !failOk) {
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final String message = 'Running "${commandLine.join(' ')}" in ${workingDirectory.path} failed';
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throw UnpublishException(
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message,
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ProcessResult(0, exitCode, null, 'returned $exitCode'),
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);
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}
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return utf8.decoder.convert(output).trim();
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}
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}
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typedef HttpReader = Future<Uint8List> Function(Uri url, {Map<String, String> headers});
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class ArchiveUnpublisher {
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ArchiveUnpublisher(
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this.tempDir,
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this.revisionsBeingRemoved,
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this.channels,
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this.platform, {
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this.confirmed = false,
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ProcessManager processManager,
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bool subprocessOutput = true,
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}) : assert(revisionsBeingRemoved.length == 40),
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metadataGsPath = '$gsReleaseFolder/${getMetadataFilename(platform)}',
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_processRunner = ProcessRunner(
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processManager: processManager,
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subprocessOutput: subprocessOutput,
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);
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final PublishedPlatform platform;
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final String metadataGsPath;
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final Set<Channel> channels;
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final Set<String> revisionsBeingRemoved;
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final bool confirmed;
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final Directory tempDir;
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final ProcessRunner _processRunner;
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static String getMetadataFilename(PublishedPlatform platform) => 'releases_${getPublishedPlatform(platform)}.json';
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/// Remove the archive from Google Storage.
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Future<void> unpublishArchive() async {
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final Map<String, dynamic> jsonData = await _loadMetadata();
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final List<Map<String, String>> releases = (jsonData['releases'] as List<dynamic>).map<Map<String, String>>((dynamic entry) {
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final Map<String, dynamic> mapEntry = entry as Map<String, dynamic>;
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return mapEntry.cast<String, String>();
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}).toList();
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final Map<Channel, Map<String, String>> paths = await _getArchivePaths(releases);
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releases.removeWhere((Map<String, String> value) => revisionsBeingRemoved.contains(value['hash']) && channels.contains(fromChannelName(value['channel'])));
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releases.sort((Map<String, String> a, Map<String, String> b) {
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final DateTime aDate = DateTime.parse(a['release_date']);
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final DateTime bDate = DateTime.parse(b['release_date']);
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return bDate.compareTo(aDate);
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});
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jsonData['releases'] = releases;
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for (final Channel channel in channels) {
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if (!revisionsBeingRemoved.contains(jsonData['current_release'][getChannelName(channel)])) {
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// Don't replace the current release if it's not one of the revisions we're removing.
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continue;
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}
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final Map<String, String> replacementRelease = releases.firstWhere((Map<String, String> value) => value['channel'] == getChannelName(channel));
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if (replacementRelease == null) {
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throw UnpublishException('Unable to find previous release for channel ${getChannelName(channel)}.');
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}
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jsonData['current_release'][getChannelName(channel)] = replacementRelease['hash'];
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print(
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'${confirmed ? 'Reverting' : 'Would revert'} current ${getChannelName(channel)} '
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'${getPublishedPlatform(platform)} release to ${replacementRelease['hash']} (version ${replacementRelease['version']}).'
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);
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}
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await _cloudRemoveArchive(paths);
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await _updateMetadata(jsonData);
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}
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Future<Map<Channel, Map<String, String>>> _getArchivePaths(List<Map<String, String>> releases) async {
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final Set<String> hashes = <String>{};
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final Map<Channel, Map<String, String>> paths = <Channel, Map<String, String>>{};
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for (final Map<String, String> revision in releases) {
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final String hash = revision['hash'];
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final Channel channel = fromChannelName(revision['channel']);
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hashes.add(hash);
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if (revisionsBeingRemoved.contains(hash) && channels.contains(channel)) {
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paths[channel] ??= <String, String>{};
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paths[channel][hash] = revision['archive'];
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}
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}
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final Set<String> missingRevisions = revisionsBeingRemoved.difference(hashes.intersection(revisionsBeingRemoved));
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if (missingRevisions.isNotEmpty) {
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final bool plural = missingRevisions.length > 1;
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throw UnpublishException('Revision${plural ? 's' : ''} $missingRevisions ${plural ? 'are' : 'is'} not present in the server metadata.');
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}
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return paths;
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}
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Future<Map<String, dynamic>> _loadMetadata() async {
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final File metadataFile = File(
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path.join(tempDir.absolute.path, getMetadataFilename(platform)),
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);
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// Always run this, even in dry runs.
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await _runGsUtil(<String>['cp', metadataGsPath, metadataFile.absolute.path], confirm: true);
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final String currentMetadata = metadataFile.readAsStringSync();
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if (currentMetadata.isEmpty) {
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throw UnpublishException('Empty metadata received from server');
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}
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Map<String, dynamic> jsonData;
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try {
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jsonData = json.decode(currentMetadata) as Map<String, dynamic>;
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} on FormatException catch (e) {
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throw UnpublishException('Unable to parse JSON metadata received from cloud: $e');
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}
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return jsonData;
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}
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Future<void> _updateMetadata(Map<String, dynamic> jsonData) async {
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// We can't just cat the metadata from the server with 'gsutil cat', because
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// Windows wants to echo the commands that execute in gsutil.bat to the
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// stdout when we do that. So, we copy the file locally and then read it
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// back in.
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final File metadataFile = File(
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path.join(tempDir.absolute.path, getMetadataFilename(platform)),
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);
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const JsonEncoder encoder = JsonEncoder.withIndent(' ');
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metadataFile.writeAsStringSync(encoder.convert(jsonData));
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print('${confirmed ? 'Overwriting' : 'Would overwrite'} $metadataGsPath with contents of ${metadataFile.absolute.path}');
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await _cloudReplaceDest(metadataFile.absolute.path, metadataGsPath);
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}
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Future<String> _runGsUtil(
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List<String> args, {
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Directory workingDirectory,
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bool failOk = false,
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bool confirm = false,
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}) async {
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final List<String> command = <String>['gsutil', '--', ...args];
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if (confirm) {
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return _processRunner.runProcess(
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command,
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workingDirectory: workingDirectory,
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failOk: failOk,
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);
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} else {
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print('Would run: ${command.join(' ')}');
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return '';
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}
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}
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Future<void> _cloudRemoveArchive(Map<Channel, Map<String, String>> paths) async {
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final List<String> files = <String>[];
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print('${confirmed ? 'Removing' : 'Would remove'} the following release archives:');
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for (final Channel channel in paths.keys) {
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final Map<String, String> hashes = paths[channel];
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for (final String hash in hashes.keys) {
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final String file = '$gsReleaseFolder/${hashes[hash]}';
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files.add(file);
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print(' $file');
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}
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}
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await _runGsUtil(<String>['rm', ...files], failOk: true, confirm: confirmed);
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}
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Future<String> _cloudReplaceDest(String src, String dest) async {
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assert(dest.startsWith('gs:'), '_cloudReplaceDest must have a destination in cloud storage.');
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assert(!src.startsWith('gs:'), '_cloudReplaceDest must have a local source file.');
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// We often don't have permission to overwrite, but
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// we have permission to remove, so that's what we do first.
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await _runGsUtil(<String>['rm', dest], failOk: true, confirm: confirmed);
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String mimeType;
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if (dest.endsWith('.tar.xz')) {
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mimeType = 'application/x-gtar';
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}
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if (dest.endsWith('.zip')) {
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mimeType = 'application/zip';
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}
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if (dest.endsWith('.json')) {
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mimeType = 'application/json';
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}
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final List<String> args = <String>[
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// Use our preferred MIME type for the files we care about
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// and let gsutil figure it out for anything else.
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if (mimeType != null) ...<String>['-h', 'Content-Type:$mimeType'],
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...<String>['cp', src, dest],
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];
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return _runGsUtil(args, confirm: confirmed);
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}
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}
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void _printBanner(String message) {
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final String banner = '*** $message ***';
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print('\n');
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print('*' * banner.length);
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print(banner);
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print('*' * banner.length);
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print('\n');
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}
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/// Prepares a flutter git repo to be removed from the published cloud storage.
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Future<void> main(List<String> rawArguments) async {
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final List<String> allowedChannelValues = Channel.values.map<String>((Channel channel) => getChannelName(channel)).toList();
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final List<String> allowedPlatformNames = PublishedPlatform.values.map<String>((PublishedPlatform platform) => getPublishedPlatform(platform)).toList();
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final ArgParser argParser = ArgParser();
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argParser.addOption(
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'temp_dir',
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defaultsTo: null,
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help: 'A location where temporary files may be written. Defaults to a '
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'directory in the system temp folder. If a temp_dir is not '
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'specified, then by default a generated temporary directory will be '
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'created, used, and removed automatically when the script exits.',
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);
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argParser.addMultiOption('revision',
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help: 'The Flutter git repo revisions to remove from the published site. '
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'Must be full 40-character hashes. More than one may be specified, '
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'either by giving the option more than once, or by giving a comma '
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'separated list. Required.');
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argParser.addMultiOption(
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'channel',
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allowed: allowedChannelValues,
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help: 'The Flutter channels to remove the archives corresponding to the '
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'revisions given with --revision. More than one may be specified, '
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'either by giving the option more than once, or by giving a '
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'comma separated list. If not specified, then the archives from all '
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'channels that a revision appears in will be removed.',
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);
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argParser.addMultiOption(
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'platform',
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allowed: allowedPlatformNames,
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help: 'The Flutter platforms to remove the archive from. May specify more '
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'than one, either by giving the option more than once, or by giving a '
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'comma separated list. If not specified, then the archives from all '
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'platforms that a revision appears in will be removed.',
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);
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argParser.addFlag(
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'confirm',
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defaultsTo: false,
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help: 'If set, will actually remove the archive from Google Cloud Storage '
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'upon successful execution of this script. Published archives will be '
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'removed from this directory: $baseUrl$releaseFolder. This option '
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'must be set to perform any action on the server, otherwise only a dry '
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'run is performed.',
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);
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argParser.addFlag(
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'help',
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defaultsTo: false,
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negatable: false,
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help: 'Print help for this command.',
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);
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final ArgResults parsedArguments = argParser.parse(rawArguments);
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if (parsedArguments['help'] as bool) {
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print(argParser.usage);
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exit(0);
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}
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void errorExit(String message, {int exitCode = -1}) {
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stderr.write('Error: $message\n\n');
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stderr.write('${argParser.usage}\n');
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exit(exitCode);
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}
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final List<String> revisions = parsedArguments['revision'] as List<String>;
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if (revisions.isEmpty) {
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errorExit('Invalid argument: at least one --revision must be specified.');
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}
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for (final String revision in revisions) {
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if (revision.length != 40) {
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errorExit('Invalid argument: --revision "$revision" must be the entire hash, not just a prefix.');
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}
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if (revision.contains(RegExp(r'[^a-fA-F0-9]'))) {
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errorExit('Invalid argument: --revision "$revision" contains non-hex characters.');
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}
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}
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final String tempDirArg = parsedArguments['temp_dir'] as String;
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Directory tempDir;
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bool removeTempDir = false;
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if (tempDirArg == null || tempDirArg.isEmpty) {
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tempDir = Directory.systemTemp.createTempSync('flutter_package.');
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removeTempDir = true;
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} else {
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tempDir = Directory(tempDirArg);
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if (!tempDir.existsSync()) {
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errorExit("Temporary directory $tempDirArg doesn't exist.");
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}
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}
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if (!(parsedArguments['confirm'] as bool)) {
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_printBanner('This will be just a dry run. To actually perform the changes below, re-run with --confirm argument.');
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}
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final List<String> channelArg = parsedArguments['channel'] as List<String>;
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final List<String> channelOptions = channelArg.isNotEmpty ? channelArg : allowedChannelValues;
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final Set<Channel> channels = channelOptions.map<Channel>((String value) => fromChannelName(value)).toSet();
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final List<String> platformArg = parsedArguments['platform'] as List<String>;
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|
final List<String> platformOptions = platformArg.isNotEmpty ? platformArg : allowedPlatformNames;
|
|
final List<PublishedPlatform> platforms = platformOptions.map<PublishedPlatform>((String value) => fromPublishedPlatform(value)).toList();
|
|
int exitCode = 0;
|
|
String message;
|
|
String stack;
|
|
try {
|
|
for (final PublishedPlatform platform in platforms) {
|
|
final ArchiveUnpublisher publisher = ArchiveUnpublisher(
|
|
tempDir,
|
|
revisions.toSet(),
|
|
channels,
|
|
platform,
|
|
confirmed: parsedArguments['confirm'] as bool,
|
|
);
|
|
await publisher.unpublishArchive();
|
|
}
|
|
} on UnpublishException catch (e, s) {
|
|
exitCode = e.exitCode;
|
|
message = e.message;
|
|
stack = s.toString();
|
|
} catch (e, s) {
|
|
exitCode = -1;
|
|
message = e.toString();
|
|
stack = s.toString();
|
|
} finally {
|
|
if (removeTempDir) {
|
|
tempDir.deleteSync(recursive: true);
|
|
}
|
|
if (exitCode != 0) {
|
|
errorExit('$message\n$stack', exitCode: exitCode);
|
|
}
|
|
if (!(parsedArguments['confirm'] as bool)) {
|
|
_printBanner('This was just a dry run. To actually perform the above changes, re-run with --confirm argument.');
|
|
}
|
|
exit(0);
|
|
}
|
|
}
|