Revert "Revert "Add Orchestrator application lock metrics""

1 files changed, 31 insertions, 0 deletions

diff --git a/jdisc_core/src/main/java/com/yahoo/jdisc/test/TestTimer.java b/jdisc_core/src/main/java/com/yahoo/jdisc/test/TestTimer.java
new file mode 100644
index 00000000000..4d274a33a1f
--- /dev/null
+++ b/jdisc_core/src/main/java/com/yahoo/jdisc/test/TestTimer.java
@@ -0,0 +1,31 @@
+// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.jdisc.test;
+
+import com.yahoo.jdisc.Timer;
+
+import java.time.Duration;
+
+/**
+ * A {@link Timer} to be used in tests when the advancement of time needs to be controlled.
+ *
+ * @author hakonhall
+ */
+public class TestTimer implements Timer {
+    private Duration durationSinceEpoch = Duration.ZERO;
+
+    public void setMillis(long millisSinceEpoch) {
+        durationSinceEpoch = Duration.ofMillis(millisSinceEpoch);
+    }
+
+    public void advanceMillis(long millis) { advance(Duration.ofMillis(millis)); }
+    public void advanceSeconds(long seconds) { advance(Duration.ofSeconds(seconds)); }
+    public void advanceMinutes(long minutes) { advance(Duration.ofMinutes(minutes)); }
+    public void advance(Duration duration) {
+        durationSinceEpoch = durationSinceEpoch.plus(duration);
+    }
+
+    @Override
+    public long currentTimeMillis() {
+        return durationSinceEpoch.toMillis();
+    }
+}