1 files changed, 17 insertions, 0 deletions
diff --git a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/Task.java b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/Task.java
new file mode 100644
index 00000000000..4d40ac02440
--- /dev/null
+++ b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/Task.java
@@ -0,0 +1,17 @@
+// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.vespa.hosted.node.admin.task;
+
+import com.yahoo.vespa.hosted.node.admin.io.FileSystem;
+
+public interface Task {
+    interface TaskContext {
+        FileSystem getFileSystem();
+        boolean executeSubtask(Task task);
+    }
+
+    /**
+     * @return Returns false if task was a no-op. Used for informational purposes only.
+     * @throws RuntimeException if task could not be completed.
+     */
+    boolean execute(TaskContext context);
+}