Add find_timeouts and caching to tools/gardening

tools/gardening/lib/src/buildbot_data.dart

 // Copyright (c) 2017, 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 'buildbot_structures.dart';
 
 /// Data describing the steps of the buildbots.
 const List<BuildGroup> buildGroups = const <BuildGroup>[
   const BuildGroup(
     groupName: 'vm',
@@ skipping 632 matching lines @@
       ], testSteps: const <String>[
         'dart2js ie10 tests',
         'dart2js ie10 co19 tests',
         'dart2js ie10 fast-startup tests',
         'dart2js ie10 co19 fast-startup tests',
         'dart2js chrome tests',
         'dart2js chrome observatory_ui tests',
         'dart2js chrome package tests',
         'dart2js chrome co19 tests',
         'dart2js chrome extra tests',
+      ], isActive: false), // Replaced by 'win8-ie11' and 'win7-chrome'.
+      const BuildSubgroup(shardNames: const <String>[
+        'dart2js-win8-ie11-1-4-be',
+        'dart2js-win8-ie11-2-4-be',
+        'dart2js-win8-ie11-3-4-be',
+        'dart2js-win8-ie11-4-4-be'
+      ], testSteps: const <String>[
+        'dart2js ie11 tests',
+        'dart2js ie11 co19 tests',
+        'dart2js ie11 fast-startup tests',
+        'dart2js ie11 co19 fast-startup tests',
+      ]),
+      const BuildSubgroup(shardNames: const <String>[
+        'dart2js-win7-chrome-1-4-be',
+        'dart2js-win7-chrome-2-4-be',
+        'dart2js-win7-chrome-3-4-be',
+        'dart2js-win7-chrome-4-4-be'
+      ], testSteps: const <String>[
+        'dart2js chrome tests',
+        'dart2js chrome observatory_ui tests',
+        'dart2js chrome package tests',
+        'dart2js chrome co19 tests',
+        'dart2js chrome extra tests',
         'dart2js chrome fast-startup tests',
         'dart2js chrome observatory_ui fast-startup tests',
         'dart2js chrome package fast-startup tests',
         'dart2js chrome co19 fast-startup tests',
         'dart2js chrome extra fast-startup tests',
       ]),
       const BuildSubgroup(shardNames: const <String>[
         'dart2js-win7-ie11ff-1-4-be',
         'dart2js-win7-ie11ff-2-4-be',
         'dart2js-win7-ie11ff-3-4-be',
@@ skipping 115 matching lines @@
   /// The name of the group as display on the buildbot site.
   final String groupName;
 
   /// The subgroups, often shards, of the buildbot group.
   final List<BuildSubgroup> subgroups;
 
   const BuildGroup({this.groupName, this.subgroups});
 
   /// Returns the [BuildUri] corresponding to the build steps for shards in this
   /// group.
-  List<BuildUri> createUris(int buildNumber) {
+  List<BuildUri> createUris(int buildNumber, {bool includeInactive: false}) {
     List<BuildUri> uriList = <BuildUri>[];
     for (BuildSubgroup subgroup in subgroups) {
+      if (!subgroup.isActive && !includeInactive) continue;
       uriList.addAll(subgroup.createUris(buildNumber));
     }
     return uriList;
   }
 }
 
 /// A group of buildbot subgroups, often shards, that share their test steps,
 /// for instance all `dart2js-win7-ie10chrome-*-4-be` shards.
 class BuildSubgroup {
   /// The names of the shards in this, for instance
   /// `dart2js-win7-ie10chrome-1-4-be`, `dart2js-win7-ie10chrome-2-4-be`, etc.
   final List<String> shardNames;
 
   /// The names of the test steps for the shards in this subgroup, for instance
   /// `dart2js ie10 tests`, `dart2js ie10 co19 tests`, etc.
   final List<String> testSteps;
 
-  const BuildSubgroup({this.shardNames, this.testSteps});
+  /// Whether this subgroup is currently on the buildbot.
+  ///
+  /// Set this to `false` to preserve data for older build structures. The data
+  /// will continuously be available through logdog.
+  final bool isActive;
+
+  const BuildSubgroup({this.shardNames, this.testSteps, this.isActive: true});
+
+  Map<String, String> get logDogPaths {
+    Map<String, String> paths = <String, String>{};
+    for (String shardName in shardNames) {
+      paths[shardName] = 'chromium/bb/client.dart/$shardName';
+    }
+    return paths;
+  }
 
   /// Returns the [BuildUri] corresponding to the build steps for all shards
   /// in this subgroup.
   List<BuildUri> createUris(int buildNumber) {
     List<BuildUri> uriList = <BuildUri>[];
     for (String shardName in shardNames) {
-      for (String testStep in testSteps) {
-        uriList.add(new BuildUri.fromData(shardName, buildNumber, testStep));
-      }
+      uriList.addAll(createShardUris(shardName, buildNumber));
     }
     return uriList;
   }
+
+  List<BuildUri> createShardUris(String shardName, int buildNumber) {
+    List<BuildUri> uriList = <BuildUri>[];
+    for (String testStep in testSteps) {
+      uriList.add(new BuildUri.fromData(shardName, buildNumber, testStep));
+    }
+    return uriList;
+  }
 }