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1 files changed, 23 insertions, 0 deletions

diff --git a/container-search/src/main/java/com/yahoo/search/cluster/NodeManager.java b/container-search/src/main/java/com/yahoo/search/cluster/NodeManager.java
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+++ b/container-search/src/main/java/com/yahoo/search/cluster/NodeManager.java
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+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.cluster;
+
+import java.util.concurrent.Executor;
+
+/**
+ * Must be implemented by a node collection which wants
+ * it's node state monitored by a ClusterMonitor
+ *
+ * @author  <a href="mailto:bratseth@yahoo-inc.com">Jon S Bratseth</a>
+ */
+public interface NodeManager<T> {
+
+    /** Called when a failed node is working (ready for production) again */
+    public void working(T node);
+
+    /** Called when a working node fails */
+    public void failed(T node);
+
+    /** Called when a node should be pinged */
+    public void ping(T node, Executor executor);
+
+}