1 files changed, 23 insertions, 0 deletions
diff --git a/container-di/src/main/java/com/yahoo/container/di/config/Subscriber.java b/container-di/src/main/java/com/yahoo/container/di/config/Subscriber.java
new file mode 100644
index 00000000000..60207447bfd
--- /dev/null
+++ b/container-di/src/main/java/com/yahoo/container/di/config/Subscriber.java
@@ -0,0 +1,23 @@
+// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.container.di.config;
+
+import com.yahoo.config.ConfigInstance;
+import com.yahoo.vespa.config.ConfigKey;
+
+import java.util.Map;
+
+/**
+ * @author Tony Vaagenes
+ * @author gjoranv
+ */
+public interface Subscriber {
+
+    long waitNextGeneration(boolean isInitializing);
+    long generation();
+
+    boolean configChanged();
+    Map<ConfigKey<ConfigInstance>, ConfigInstance> config();
+
+    void close();
+
+}