1 files changed, 42 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/search/dispatch/searchcluster/Pinger.java b/container-search/src/main/java/com/yahoo/search/dispatch/searchcluster/Pinger.java
new file mode 100644
index 00000000000..7c7a9cb1d1c
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+++ b/container-search/src/main/java/com/yahoo/search/dispatch/searchcluster/Pinger.java
@@ -0,0 +1,42 @@
+// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.dispatch.searchcluster;
+
+import com.yahoo.prelude.Ping;
+import com.yahoo.prelude.Pong;
+import com.yahoo.prelude.fastsearch.FS4ResourcePool;
+import com.yahoo.prelude.fastsearch.FastSearcher;
+import com.yahoo.search.cluster.ClusterMonitor;
+import com.yahoo.search.result.ErrorMessage;
+import com.yahoo.yolean.Exceptions;
+
+import java.util.concurrent.Callable;
+
+/**
+ * @author bratseth
+ * @author ollivir
+ */
+class Pinger implements Callable<Pong> {
+    private final Node node;
+    private final ClusterMonitor<Node> clusterMonitor;
+    private final FS4ResourcePool fs4ResourcePool;
+
+    public Pinger(Node node, ClusterMonitor<Node> clusterMonitor, FS4ResourcePool fs4ResourcePool) {
+        this.node = node;
+        this.clusterMonitor = clusterMonitor;
+        this.fs4ResourcePool = fs4ResourcePool;
+    }
+
+    public Pong call() {
+        try {
+            Pong pong = FastSearcher.ping(new Ping(clusterMonitor.getConfiguration().getRequestTimeout()),
+                                          fs4ResourcePool.getBackend(node.hostname(), node.fs4port()), node.toString());
+            if (pong.activeDocuments().isPresent())
+                node.setActiveDocuments(pong.activeDocuments().get());
+            return pong;
+        } catch (RuntimeException e) {
+            return new Pong(ErrorMessage.createBackendCommunicationError("Exception when pinging " + node + ": "
+                            + Exceptions.toMessageString(e)));
+        }
+    }
+
+}