From c07475294ae2c60f1dcc394922838b1f1f57b476 Mon Sep 17 00:00:00 2001
From: Ricardo Velhote <rvelhote@gmail.com>
Date: Sun, 14 May 2017 19:18:26 +0100
Subject: [PATCH] [RPC] Add an uptime command that displays the amount of time
 that bitcoind has been running

---
 src/qt/clientmodel.cpp         |  3 +--
 src/rpc/server.cpp             | 17 +++++++++++++++++
 src/util.cpp                   |  8 ++++++++
 src/util.h                     |  5 ++++-
 test/functional/test_runner.py |  1 +
 test/functional/uptime.py      | 32 ++++++++++++++++++++++++++++++++
 6 files changed, 63 insertions(+), 3 deletions(-)
 create mode 100755 test/functional/uptime.py

diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index 3dfb51ccf..33f4535ee 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -26,7 +26,6 @@
 
 class CBlockIndex;
 
-static const int64_t nClientStartupTime = GetTime();
 static int64_t nLastHeaderTipUpdateNotification = 0;
 static int64_t nLastBlockTipUpdateNotification = 0;
 
@@ -238,7 +237,7 @@ bool ClientModel::isReleaseVersion() const
 
 QString ClientModel::formatClientStartupTime() const
 {
-    return QDateTime::fromTime_t(nClientStartupTime).toString();
+    return QDateTime::fromTime_t(GetStartupTime()).toString();
 }
 
 QString ClientModel::dataDir() const
diff --git a/src/rpc/server.cpp b/src/rpc/server.cpp
index 1a04ce2b4..c320d2045 100644
--- a/src/rpc/server.cpp
+++ b/src/rpc/server.cpp
@@ -258,6 +258,22 @@ UniValue stop(const JSONRPCRequest& jsonRequest)
     return "Bitcoin server stopping";
 }
 
+UniValue uptime(const JSONRPCRequest& jsonRequest)
+{
+    if (jsonRequest.fHelp || jsonRequest.params.size() > 1)
+        throw std::runtime_error(
+                "uptime\n"
+                        "\nReturns the total uptime of the server.\n"
+                        "\nResult:\n"
+                        "ttt        (numeric) The number of seconds that the server has been running\n"
+                        "\nExamples:\n"
+                + HelpExampleCli("uptime", "")
+                + HelpExampleRpc("uptime", "")
+        );
+
+    return GetTime() - GetStartupTime();
+}
+
 /**
  * Call Table
  */
@@ -267,6 +283,7 @@ static const CRPCCommand vRPCCommands[] =
     /* Overall control/query calls */
     { "control",            "help",                   &help,                   true,  {"command"}  },
     { "control",            "stop",                   &stop,                   true,  {}  },
+    { "control",            "uptime",                 &uptime,                 true,  {}  },
 };
 
 CRPCTable::CRPCTable()
diff --git a/src/util.cpp b/src/util.cpp
index 20a808201..0e1464e59 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -84,6 +84,8 @@
 #include <openssl/rand.h>
 #include <openssl/conf.h>
 
+// Application startup time (used for uptime calculation)
+const int64_t nStartupTime = GetTime();
 
 const char * const BITCOIN_CONF_FILENAME = "bitcoin.conf";
 const char * const BITCOIN_PID_FILENAME = "bitcoind.pid";
@@ -889,3 +891,9 @@ std::string CopyrightHolders(const std::string& strPrefix)
     }
     return strCopyrightHolders;
 }
+
+// Obtain the application startup time (used for uptime calculation)
+int64_t GetStartupTime()
+{
+    return nStartupTime;
+}
diff --git a/src/util.h b/src/util.h
index a4d7aa4db..824ad51ac 100644
--- a/src/util.h
+++ b/src/util.h
@@ -5,7 +5,7 @@
 
 /**
  * Server/client environment: argument handling, config file parsing,
- * logging, thread wrappers
+ * logging, thread wrappers, startup time
  */
 #ifndef BITCOIN_UTIL_H
 #define BITCOIN_UTIL_H
@@ -29,6 +29,9 @@
 
 #include <boost/signals2/signal.hpp>
 
+// Application startup time (used for uptime calculation)
+int64_t GetStartupTime();
+
 static const bool DEFAULT_LOGTIMEMICROS = false;
 static const bool DEFAULT_LOGIPS        = false;
 static const bool DEFAULT_LOGTIMESTAMPS = true;
diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py
index 0dca318af..4c7eea67d 100755
--- a/test/functional/test_runner.py
+++ b/test/functional/test_runner.py
@@ -113,6 +113,7 @@ BASE_SCRIPTS= [
     'listsinceblock.py',
     'p2p-leaktests.py',
     'wallet-encryption.py',
+    'uptime.py',
 ]
 
 EXTENDED_SCRIPTS = [
diff --git a/test/functional/uptime.py b/test/functional/uptime.py
new file mode 100755
index 000000000..b20d6f5cb
--- /dev/null
+++ b/test/functional/uptime.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+"""Test the RPC call related to the uptime command.
+
+Test corresponds to code in rpc/server.cpp.
+"""
+
+import time
+
+from test_framework.test_framework import BitcoinTestFramework
+
+
+class UptimeTest(BitcoinTestFramework):
+    def __init__(self):
+        super().__init__()
+
+        self.num_nodes = 1
+        self.setup_clean_chain = True
+
+    def run_test(self):
+        self._test_uptime()
+
+    def _test_uptime(self):
+        wait_time = 10
+        self.nodes[0].setmocktime(int(time.time() + wait_time))
+        assert(self.nodes[0].uptime() >= wait_time)
+
+
+if __name__ == '__main__':
+    UptimeTest().main()