1 files changed, 0 insertions, 116 deletions
diff --git a/container-search/src/main/java/com/yahoo/prelude/cluster/NodeMonitor.java b/container-search/src/main/java/com/yahoo/prelude/cluster/NodeMonitor.java
deleted file mode 100644
index 894b9ebd8ce..00000000000
--- a/container-search/src/main/java/com/yahoo/prelude/cluster/NodeMonitor.java
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-package com.yahoo.prelude.cluster;
-
-import static com.yahoo.container.protect.Error.BACKEND_COMMUNICATION_ERROR;
-import static com.yahoo.container.protect.Error.NO_ANSWER_WHEN_PINGING_NODE;
-
-import java.util.logging.Logger;
-
-import com.yahoo.prelude.fastsearch.VespaBackEndSearcher;
-import com.yahoo.search.result.ErrorMessage;
-
-/**
- * A node monitor is responsible for maintaining the state of a monitored node.
- * It has the following properties:
- * <ul>
- * <li>A node is taken out of operation if it gives no response in 10 s</li>
- * <li>A node is put back in operation when it responds correctly again</li>
- * <li>A node is initially considered not in operation until we have some data from it</li>
- * </ul>
- *
- * @author bratseth
- * @author Steinar Knutsen
- */
-public class NodeMonitor {
-
-    protected static Logger log = Logger.getLogger(NodeMonitor.class.getName());
-
-    /** The object representing the monitored node */
-    private final VespaBackEndSearcher node;
-
-    private boolean isWorking = true;
-
-    /** The last time this node responded successfully */
-    private long succeededAt = 0;
-
-    /** Whether it is assumed the node has documents available to serve */
-    private boolean searchNodesOnline = false;
-
-    /**
-     * Creates a new node monitor for a node
-     */
-    public NodeMonitor(final VespaBackEndSearcher node) {
-        this.node = node;
-    }
-
-    /**
-     * Returns whether this node is currently in a state suitable for receiving
-     * traffic. As far as we know, that is
-     */
-    public boolean isWorking() {
-        return isWorking;
-    }
-
-    // Whether or not dispatch has ever responded successfully
-    private boolean statusIsKnown = false;
-
-    public VespaBackEndSearcher getNode() {
-        return node;
-    }
-
-    /**
-     * Called when this node fails.
-     *
-     * @param error a container which should contain a short description
-     */
-    public void failed(ErrorMessage error) {
-        long respondedAt = System.currentTimeMillis();
-        statusIsKnown = true;
-
-        if (error.getCode() == NO_ANSWER_WHEN_PINGING_NODE.code) {
-            // Only count not being able to talk to backend at all
-            // as errors we care about
-            if ((respondedAt - succeededAt) > 10000) {
-                this.searchNodesOnline = false;
-                setWorking(false, "Not working for 10 s: " + error.toString());
-            }
-        } else if (error.getCode() == BACKEND_COMMUNICATION_ERROR.code) {
-            this.searchNodesOnline = false;
-            setWorking(false, "Backend communication error: " + error.toString());
-        } else {
-            succeededAt = respondedAt;
-        }
-    }
-
-    /**
-     * Called when a response is received from this node.
-     */
-    public void responded(boolean searchNodesOnline) {
-        succeededAt = System.currentTimeMillis();
-        statusIsKnown = true;
-
-        this.searchNodesOnline = searchNodesOnline;
-        if (! isWorking)
-            setWorking(true, "Responds correctly");
-    }
-
-    /** Changes the state of this node if required */
-    private void setWorking(boolean working, String explanation) {
-        if (isWorking == working) return; // Old news
-
-        if (statusIsKnown) {
-            if (working)
-                log.info("Putting " + node + " in service: " + explanation);
-            else
-                log.info("Taking " + node + " out of service: " + explanation);
-        }
-
-        isWorking = working;
-    }
-
-    boolean searchNodesOnline() { return searchNodesOnline; }
-
-    /** Returns true if we have had enough time to determine the status of this node since creating the monitor */
-    boolean statusIsKnown() { return statusIsKnown; }
-
-}