From a5ed12b351806b187613457b58982ca67f537594 Mon Sep 17 00:00:00 2001 From: Valerij Fredriksen Date: Thu, 13 Oct 2022 21:10:41 +0200 Subject: Revert "Remove HostLivenessTracker" --- .../config/provision/HostLivenessTracker.java | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 config-provisioning/src/main/java/com/yahoo/config/provision/HostLivenessTracker.java (limited to 'config-provisioning/src/main/java') diff --git a/config-provisioning/src/main/java/com/yahoo/config/provision/HostLivenessTracker.java b/config-provisioning/src/main/java/com/yahoo/config/provision/HostLivenessTracker.java new file mode 100644 index 00000000000..f3326ec2bc8 --- /dev/null +++ b/config-provisioning/src/main/java/com/yahoo/config/provision/HostLivenessTracker.java @@ -0,0 +1,24 @@ +// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. +package com.yahoo.config.provision; + +import java.time.Instant; +import java.util.Optional; + +/** + * Instances of this are used to keep track of (notify and query) + * which hosts are currently connected to the config system. + * + * @author bratseth + */ +public interface HostLivenessTracker { + + /** Called each time a config request is received from a client */ + void receivedRequestFrom(String hostname); + + /** + * Returns the epoch timestamp of the last request received from the given hostname, + * or empty if there is no memory of this host making a request + */ + Optional lastRequestFrom(String hostname); + +} -- cgit v1.2.3