1 files changed, 69 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionStatusMessage.java b/src/main/java/com/google/devtools/build/lib/actions/ActionStatusMessage.java
new file mode 100644
index 0000000000..c932a9e809
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionStatusMessage.java
@@ -0,0 +1,69 @@
+// 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.actions;
+
+/**
+ * A message used to update in-flight action status. An action's status may change low down in the
+ * execution stack (for instance, from running remotely to running locally), so this message can be
+ * used to notify any interested parties.
+ */
+public class ActionStatusMessage {
+  private final ActionMetadata action;
+  private final String message;
+  public static final String PREPARING = "Preparing";
+
+  public ActionStatusMessage(ActionMetadata action, String message) {
+    this.action = action;
+    this.message = message;
+  }
+
+  public ActionMetadata getActionMetadata() {
+    return action;
+  }
+
+  public String getMessage() {
+    return message;
+  }
+
+  /** Returns whether the message needs further interpolation of a 'strategy' when printed. */
+  public boolean needsStrategy() {
+    return false;
+  }
+
+  /** Creates "Analyzing" status message. */
+  public static ActionStatusMessage analysisStrategy(ActionMetadata action) {
+    return new ActionStatusMessage(action, "Analyzing");
+  }
+
+  /** Creates "Preparing" status message. */
+  public static ActionStatusMessage preparingStrategy(ActionMetadata action) {
+    return new ActionStatusMessage(action, PREPARING);
+  }
+
+  /** Creates "Scheduling" status message. */
+  public static ActionStatusMessage schedulingStrategy(ActionMetadata action) {
+    return new ActionStatusMessage(action, "Scheduling");
+  }
+
+  /** Creates "Running (%s)" status message (needs strategy interpolated). */
+  public static ActionStatusMessage runningStrategy(ActionMetadata action) {
+    return new ActionStatusMessage(action, "Running (%s)") {
+      @Override
+      public boolean needsStrategy() {
+        return true;
+      }
+    };
+  }
+}