Add status_summary and current_summary to tools/gardening

tools/gardening/lib/src/buildbot_structures.dart

Index: tools/gardening/lib/src/buildbot_structures.dart
diff --git a/tools/gardening/lib/src/buildbot_structures.dart b/tools/gardening/lib/src/buildbot_structures.dart
new file mode 100644
index 0000000000000000000000000000000000000000..8d86e4aeb00e69c6eeddbd97c52f77ea20534cc5
--- /dev/null
+++ b/tools/gardening/lib/src/buildbot_structures.dart
@@ -0,0 +1,82 @@
+// 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 'util.dart';
+
+/// The [Uri] of a build step stdio log split into its subparts.
+class BuildUri {
+  final String scheme;
+  final String host;
+  final String prefix;
+  final String botName;
+  final int buildNumber;
+  final String stepName;
+  final String suffix;
+
+  factory BuildUri(Uri uri) {
+    List<String> parts =
+        split(uri.path, ['/builders/', '/builds/', '/steps/', '/logs/']);
+    String botName = parts[1];
+    int buildNumber = int.parse(parts[2]);
+    String stepName = parts[3];
+    return new BuildUri.fromData(botName, buildNumber, stepName);
+  }
+
+  factory BuildUri.fromData(String botName, int buildNumber, String stepName) {
+    return new BuildUri.internal('https', 'build.chromium.org',
+        '/p/client.dart', botName, buildNumber, stepName, 'stdio/text');
+  }
+
+  BuildUri.internal(this.scheme, this.host, this.prefix, this.botName,
+      this.buildNumber, this.stepName, this.suffix);
+
+  String get shortBuildName => '$botName/$stepName';
+
+  String get buildName =>
+      '/builders/$botName/builds/$buildNumber/steps/$stepName';
+
+  String get path => '$prefix$buildName/logs/$suffix';
+
+  /// Creates the [Uri] for this build step stdio log.
+  Uri toUri() {
+    return new Uri(scheme: scheme, host: host, path: path);
+  }
+
+  /// Returns the [BuildUri] the previous build of this build step.
+  BuildUri prev() {
+    return new BuildUri.internal(
+        scheme, host, prefix, botName, buildNumber - 1, stepName, suffix);
+  }
+
+  String toString() {
+    return buildName;
+  }
+}
+
+/// Id for a test on a specific configuration, for instance
+/// `dart2js-chrome release_x64 co19/Language/Metadata/before_function_t07`.
+class TestConfiguration {
+  final String configName;
+  final String archName;
+  final String testName;
+
+  TestConfiguration(this.configName, this.archName, this.testName);
+
+  String toString() {
+    return '$configName $archName $testName';
+  }
+
+  int get hashCode =>
+      configName.hashCode * 13 +
+      archName.hashCode * 17 +
+      testName.hashCode * 19;
+
+  bool operator ==(other) {
+    if (identical(this, other)) return true;
+    if (other is! TestConfiguration) return false;
+    return configName == other.configName &&
+        archName == other.archName &&
+        testName == other.testName;
+  }
+}