1 files changed, 70 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/AggregatedCriticalPath.java b/src/main/java/com/google/devtools/build/lib/runtime/AggregatedCriticalPath.java
new file mode 100644
index 0000000000..dd70c3520d
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/runtime/AggregatedCriticalPath.java
@@ -0,0 +1,70 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.devtools.build.lib.runtime;
+
+import com.google.common.base.Joiner;
+import com.google.common.collect.ImmutableList;
+
+/**
+ * Aggregates all the critical path components in one object. This allows us to easily access the
+ * components data and have a proper toString().
+ */
+public class AggregatedCriticalPath<T extends AbstractCriticalPathComponent> {
+
+  private final long totalTime;
+  private final ImmutableList<T> criticalPathComponents;
+
+  protected AggregatedCriticalPath(long totalTime, ImmutableList<T> criticalPathComponents) {
+    this.totalTime = totalTime;
+    this.criticalPathComponents = criticalPathComponents;
+  }
+
+  /** Total wall time in ms spent running the critical path actions. */
+  public long totalTime() {
+    return totalTime;
+  }
+
+  /** Returns a list of all the component stats for the critical path. */
+  public ImmutableList<T> components() {
+    return criticalPathComponents;
+  }
+
+  @Override
+  public String toString() {
+    return toString(false);
+  }
+
+  /**
+   * Returns a summary version of the critical path stats that omits stats that are not useful
+   * to the user.
+   */
+  public String toStringSummary() {
+    return toString(true);
+  }
+
+  private String toString(boolean summary) {
+    StringBuilder sb = new StringBuilder("Critical Path: ");
+    double totalMillis = totalTime;
+    sb.append(String.format("%.2f", totalMillis / 1000.0));
+    sb.append("s");
+    if (summary || criticalPathComponents.isEmpty()) {
+      return sb.toString();
+    }
+    sb.append("\n  ");
+    Joiner.on("\n  ").appendTo(sb, criticalPathComponents);
+    return sb.toString();
+  }
+}
+