From 41ce6c571493ac1800509200ea7f231729da51f5 Mon Sep 17 00:00:00 2001
From: Kohsuke Kawaguchi <kk@kohsuke.org>
Date: Sat, 26 Oct 2013 13:54:05 -0700
Subject: [PATCH] track uptime

---
 core/src/main/java/jenkins/model/Uptime.java | 32 ++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 core/src/main/java/jenkins/model/Uptime.java

diff --git a/core/src/main/java/jenkins/model/Uptime.java b/core/src/main/java/jenkins/model/Uptime.java
new file mode 100644
index 0000000000..226b751fdd
--- /dev/null
+++ b/core/src/main/java/jenkins/model/Uptime.java
@@ -0,0 +1,32 @@
+package jenkins.model;
+
+import hudson.Extension;
+import hudson.init.InitMilestone;
+import hudson.init.Initializer;
+
+/**
+ * Keeps track of the uptime of Jenkins.
+ *
+ * @author Kohsuke Kawaguchi
+ * @since 1.538
+ */
+@Extension
+public class Uptime {
+    private long startTime;
+
+    /**
+     * Timestamp in which Jenkins became fully up and running.
+     */
+    public long getStartTime() {
+        return startTime;
+    }
+
+    public long getUptime() {
+        return System.currentTimeMillis()-startTime;
+    }
+
+    @Initializer(after=InitMilestone.JOB_LOADED)
+    public static void init() {
+        Jenkins.getInstance().getInjector().getInstance(Uptime.class).startTime = System.currentTimeMillis();
+    }
+}
-- 
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