| #!/usr/bin/env dart |
| // Copyright (c) 2018, 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. |
| |
| // Find the newest commit that has a full set of results on the builders. |
| |
| import 'dart:async'; |
| import 'dart:convert'; |
| import 'dart:io'; |
| import 'dart:math'; |
| |
| import 'package:args/args.dart'; |
| import 'package:glob/glob.dart'; |
| |
| void main(List<String> args) async { |
| final parser = ArgParser(); |
| parser.addMultiOption("builder", |
| abbr: "b", |
| help: "Select the builders matching the glob [option is repeatable]", |
| splitCommas: false); |
| parser.addOption("branch", |
| abbr: "B", |
| help: "Select the builders building this branch", |
| defaultsTo: "main"); |
| parser.addOption("count", |
| abbr: "c", help: "List this many commits", defaultsTo: "1"); |
| parser.addFlag("help", help: "Show the program usage.", negatable: false); |
| |
| final options = parser.parse(args); |
| if (options.flag("help")) { |
| print(""" |
| Usage: find_base_commit.dart [OPTION]... |
| Find the newest commit that has a full set of results on the builders. |
| |
| The options are as follows: |
| |
| ${parser.usage}"""); |
| return; |
| } |
| |
| int count = int.parse(options.option("count")!); |
| final globs = List<Glob>.from( |
| options.multiOption("builder").map((String pattern) => Glob(pattern))); |
| |
| // Download the most recent builds from buildbucket. |
| const maxBuilds = 1000; |
| final url = Uri.parse("https://cr-buildbucket.appspot.com" |
| "/prpc/buildbucket.v2.Builds/SearchBuilds"); |
| const maxRetries = 3; |
| const timeout = Duration(seconds: 30); |
| final query = jsonEncode({ |
| "predicate": { |
| "builder": {"project": "dart", "bucket": "ci.sandbox"}, |
| "status": "ENDED_MASK" |
| }, |
| "pageSize": maxBuilds, |
| "fields": "builds.*.builder.builder,builds.*.input" |
| }); |
| late Map<String, dynamic> searchResult; |
| for (int i = 1; i <= maxRetries; i++) { |
| try { |
| final client = HttpClient(); |
| final request = await client.postUrl(url).timeout(timeout) |
| ..headers.contentType = ContentType.json |
| ..headers.add(HttpHeaders.acceptHeader, ContentType.json) |
| ..write(query); |
| final response = await request.close().timeout(timeout); |
| if (response.statusCode != 200) { |
| print("Failed to search for builds: " |
| "${response.statusCode}:${response.reasonPhrase}"); |
| exit(1); |
| } |
| const prefix = ")]}'"; |
| searchResult = await (response |
| .cast<List<int>>() |
| .transform(Utf8Decoder()) |
| .map((event) => |
| event.startsWith(prefix) ? event.substring(prefix.length) : event) |
| .transform(JsonDecoder()) |
| .cast<Map<String, dynamic>>() |
| .first |
| .timeout(timeout)); |
| client.close(); |
| break; |
| } on TimeoutException catch (e) { |
| final inSeconds = e.duration?.inSeconds; |
| stderr.writeln( |
| "Attempt $i of $maxRetries timed out after $inSeconds seconds"); |
| if (i == maxRetries) { |
| stderr.writeln("error: Failed to download $url"); |
| exit(1); |
| } |
| } |
| } |
| |
| // Locate the builds we're interested in and map them to each commit. The |
| // builds returned by the API are sorted with the newest first. Since builders |
| // don't build back in time and always build the latest commit whenever they |
| // can, the first time we see a commit, we know it's newer than all commits |
| // we haven't seen yet. The insertion order into the buildersForCommits map |
| // will then sorted with the newest commit first. |
| final builds = searchResult["builds"] as List<Map>?; |
| if (builds == null) { |
| print("No builds found"); |
| exit(1); |
| } |
| final buildersForCommits = <String, Set<String>>{}; |
| for (final build in builds) { |
| final builder = (build["builder"] as Map?)?["builder"]; |
| if (builder is! String || |
| builder.endsWith("-beta") || |
| builder.endsWith("-dev") || |
| builder.endsWith("-stable")) { |
| // Ignore the release builders. The -try builders aren't in the |
| // bucket we're reading. |
| continue; |
| } |
| if (globs.isNotEmpty && !globs.any((glob) => glob.matches(builder))) { |
| // Filter way builders we're not interested in. |
| continue; |
| } |
| final input = (build["input"] as Map?)?["gitilesCommit"] as Map?; |
| if (input == null) { |
| // Ignore builds not triggered by a commit, e.g. fuzz-linux. |
| continue; |
| } |
| final ref = input["ref"]; |
| if (ref != "refs/heads/${options.option('branch')}") { |
| // Ignore builds on the wrong branch. |
| continue; |
| } |
| final commit = input["id"] as String; |
| final buildersForCommit = |
| buildersForCommits.putIfAbsent(commit, () => <String>{}); |
| buildersForCommit.add(builder); |
| } |
| |
| if (buildersForCommits.isEmpty) { |
| print("Failed to locate any commits having run on the builders"); |
| exitCode = 1; |
| return; |
| } |
| |
| int maxBots = 0; |
| for (final builders in buildersForCommits.values) { |
| maxBots = max(maxBots, builders.length); |
| } |
| |
| // List commits run on the most builders. |
| for (final commit in buildersForCommits.keys |
| .where((commit) => buildersForCommits[commit]!.length == maxBots) |
| .take(count)) { |
| print(commit); |
| } |
| } |