Add node metrics screen

qa/rpc-tests/test_framework/util.py

@@ -65,6 +65,7 @@ def initialize_datadir(dirname, n):
         os.makedirs(datadir)
     with open(os.path.join(datadir, "zcash.conf"), 'w') as f:
         f.write("regtest=1\n");
+        f.write("showmetrics=0\n");
         f.write("rpcuser=rt\n");
         f.write("rpcpassword=rt\n");
         f.write("port="+str(p2p_port(n))+"\n");

src/Makefile.am

@@ -120,6 +120,7 @@ BITCOIN_CORE_H = \
   main.h \
   memusage.h \
   merkleblock.h \
+  metrics.h \
   miner.h \
   mruset.h \
   net.h \
@@ -205,6 +206,7 @@ libbitcoin_server_a_SOURCES = \
   leveldbwrapper.cpp \
   main.cpp \
   merkleblock.cpp \
+  metrics.cpp \
   miner.cpp \
   net.cpp \
   noui.cpp \

src/init.cpp

@@ -16,6 +16,7 @@
 #include "consensus/validation.h"
 #include "key.h"
 #include "main.h"
+#include "metrics.h"
 #include "miner.h"
 #include "net.h"
 #include "rpcserver.h"
@@ -975,6 +976,12 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     CScheduler::Function serviceLoop = boost::bind(&CScheduler::serviceQueue, &scheduler);
     threadGroup.create_thread(boost::bind(&TraceThread<CScheduler::Function>, "scheduler", serviceLoop));
 
+    if (GetBoolArg("-showmetrics", true) && !fPrintToConsole && !GetBoolArg("-daemon", false)) {
+        // Start the persistent metrics interface
+        ConnectMetricsScreen();
+        threadGroup.create_thread(&ThreadShowMetricsScreen);
+    }
+
     // Initialize Zcash circuit parameters
     ZC_LoadParams();
     // These must be disabled for now, they are buggy and we probably don't

src/main.cpp

@@ -16,6 +16,7 @@
 #include "consensus/validation.h"
 #include "init.h"
 #include "merkleblock.h"
+#include "metrics.h"
 #include "net.h"
 #include "pow.h"
 #include "txdb.h"
@@ -833,6 +834,11 @@ unsigned int GetP2SHSigOpCount(const CTransaction& tx, const CCoinsViewCache& in
 
 bool CheckTransaction(const CTransaction& tx, CValidationState &state)
 {
+    // Don't count coinbase transactions because mining skews the count
+    if (!tx.IsCoinBase()) {
+        transactionsValidated.increment();
+    }
+
     if (!CheckTransactionWithoutProofVerification(tx, state)) {
         return false;
     } else {

src/metrics.cpp

@@ -0,0 +1,216 @@
+// Copyright (c) 2016 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "metrics.h"
+
+#include "chainparams.h"
+#include "ui_interface.h"
+#include "util.h"
+#include "utiltime.h"
+
+#include <boost/thread.hpp>
+#include <boost/thread/synchronized_value.hpp>
+#include <string>
+#include <sys/ioctl.h>
+
+AtomicCounter transactionsValidated;
+AtomicCounter ehSolverRuns;
+AtomicCounter solutionTargetChecks;
+AtomicCounter minedBlocks;
+
+boost::synchronized_value<std::list<std::string>> messageBox;
+boost::synchronized_value<std::string> initMessage;
+bool loaded = false;
+
+static bool metrics_ThreadSafeMessageBox(const std::string& message,
+                                      const std::string& caption,
+                                      unsigned int style)
+{
+    std::string strCaption;
+    // Check for usage of predefined caption
+    switch (style) {
+    case CClientUIInterface::MSG_ERROR:
+        strCaption += _("Error");
+        break;
+    case CClientUIInterface::MSG_WARNING:
+        strCaption += _("Warning");
+        break;
+    case CClientUIInterface::MSG_INFORMATION:
+        strCaption += _("Information");
+        break;
+    default:
+        strCaption += caption; // Use supplied caption (can be empty)
+    }
+
+    boost::strict_lock_ptr<std::list<std::string>> u = messageBox.synchronize();
+    u->push_back(strCaption + ": " + message);
+    if (u->size() > 5) {
+        u->pop_back();
+    }
+}
+
+static void metrics_InitMessage(const std::string& message)
+{
+    *initMessage = message;
+}
+
+void ConnectMetricsScreen()
+{
+    uiInterface.ThreadSafeMessageBox.disconnect_all_slots();
+    uiInterface.ThreadSafeMessageBox.connect(metrics_ThreadSafeMessageBox);
+    uiInterface.InitMessage.disconnect_all_slots();
+    uiInterface.InitMessage.connect(metrics_InitMessage);
+}
+
+void printMiningStatus(bool mining)
+{
+    if (mining) {
+        int nThreads = GetArg("-genproclimit", 1);
+        if (nThreads < 0) {
+            // In regtest threads defaults to 1
+            if (Params().DefaultMinerThreads())
+                nThreads = Params().DefaultMinerThreads();
+            else
+                nThreads = boost::thread::hardware_concurrency();
+        }
+        std::cout << strprintf(_("You are running %d mining threads."), nThreads) << std::endl;
+    } else {
+        std::cout << _("You are currently not mining.") << std::endl;
+        std::cout << _("To enable mining, add 'gen=1' to your zcash.conf and restart.") << std::endl;
+    }
+    std::cout << std::endl;
+}
+
+int printMetrics(size_t cols, int64_t nStart, bool mining)
+{
+    // Number of lines that are always displayed
+    int lines = 3;
+
+    // Calculate uptime
+    int64_t uptime = GetTime() - nStart;
+    int days = uptime / (24 * 60 * 60);
+    int hours = (uptime - (days * 24 * 60 * 60)) / (60 * 60);
+    int minutes = (uptime - (((days * 24) + hours) * 60 * 60)) / 60;
+    int seconds = uptime - (((((days * 24) + hours) * 60) + minutes) * 60);
+
+    // Display uptime
+    std::string duration;
+    if (days > 0) {
+        duration = strprintf(_("%d days, %d hours, %d minutes, %d seconds"), days, hours, minutes, seconds);
+    } else if (hours > 0) {
+        duration = strprintf(_("%d hours, %d minutes, %d seconds"), hours, minutes, seconds);
+    } else if (minutes > 0) {
+        duration = strprintf(_("%d minutes, %d seconds"), minutes, seconds);
+    } else {
+        duration = strprintf(_("%d seconds"), seconds);
+    }
+    std::string strDuration = strprintf(_("Since starting this node %s ago:"), duration);
+    std::cout << strDuration << std::endl;
+    lines += (strDuration.size() / cols);
+
+    std::cout << "- " << strprintf(_("You have validated %d transactions!"), transactionsValidated.get()) << std::endl;
+
+    if (mining) {
+        double solps = uptime > 0 ? (double)solutionTargetChecks.get() / uptime : 0;
+        std::string strSolps = strprintf("%.4f Sol/s", solps);
+        std::cout << "- " << strprintf(_("You have contributed %s on average to the network solution rate."), strSolps) << std::endl;
+        std::cout << "- " << strprintf(_("You have completed %d Equihash solver runs."), ehSolverRuns.get()) << std::endl;
+        lines += 2;
+
+        int mined = minedBlocks.get();
+        if (mined > 0) {
+            std::cout << "- " << strprintf(_("You have mined %d blocks!"), mined) << std::endl;
+            lines++;
+        }
+    }
+    std::cout << std::endl;
+
+    return lines;
+}
+
+int printMessageBox(size_t cols)
+{
+    boost::strict_lock_ptr<std::list<std::string>> u = messageBox.synchronize();
+
+    if (u->size() == 0) {
+        return 0;
+    }
+
+    int lines = 2 + u->size();
+    std::cout << _("Messages:") << std::endl;
+    for (auto it = u->cbegin(); it != u->cend(); ++it) {
+        std::cout << *it << std::endl;
+        // Handle wrapped lines
+        lines += (it->size() / cols);
+    }
+    std::cout << std::endl;
+    return lines;
+}
+
+int printInitMessage()
+{
+    if (loaded) {
+        return 0;
+    }
+
+    std::string msg = *initMessage;
+    std::cout << _("Init message:") << " " << msg << std::endl;
+    std::cout << std::endl;
+
+    if (msg == _("Done loading")) {
+        loaded = true;
+    }
+
+    return 2;
+}
+
+void ThreadShowMetricsScreen()
+{
+    // Make this thread recognisable as the metrics screen thread
+    RenameThread("zcash-metrics-screen");
+
+    // Clear screen
+    std::cout << "\e[2J";
+
+    // Print art
+    std::cout << METRICS_ART << std::endl;
+    std::cout << std::endl;
+
+    // Thank you text
+    std::cout << _("Thank you for running a Zcash node!") << std::endl;
+    std::cout << _("You're helping to strengthen the network and contributing to a social good :)") << std::endl;
+    std::cout << std::endl;
+
+    // Miner status
+    bool mining = GetBoolArg("-gen", false);
+    printMiningStatus(mining);
+
+    // Count uptime
+    int64_t nStart = GetTime();
+
+    while (true) {
+        // Number of lines that are always displayed
+        int lines = 1;
+
+        // Get current window size
+        struct winsize w;
+        ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+
+        // Erase below current position
+        std::cout << "\e[J";
+
+        lines += printMetrics(w.ws_col, nStart, mining);
+        lines += printMessageBox(w.ws_col);
+        lines += printInitMessage();
+
+        // Explain how to exit
+        std::cout << "[" << _("Press Ctrl+C to exit") << "] [" << _("Set 'showmetrics=0' to hide") << "]" << std::endl;;
+
+        boost::this_thread::interruption_point();
+        MilliSleep(1000);
+
+        // Return to the top of the updating section
+        std::cout << "\e[" << lines << "A";
+    }
+}

src/metrics.h

@@ -0,0 +1,62 @@
+// Copyright (c) 2016 The Zcash developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <atomic>
+#include <string>
+
+struct AtomicCounter {
+    std::atomic<int> value;
+
+    AtomicCounter() : value {0} { }
+
+    void increment(){
+        ++value;
+    }
+
+    void decrement(){
+        --value;
+    }
+
+    int get(){
+        return value.load();
+    }
+};
+
+extern AtomicCounter transactionsValidated;
+extern AtomicCounter ehSolverRuns;
+extern AtomicCounter solutionTargetChecks;
+extern AtomicCounter minedBlocks;
+
+void ConnectMetricsScreen();
+void ThreadShowMetricsScreen();
+
+/**
+ * Heart image: https://commons.wikimedia.org/wiki/File:Heart_coraz%C3%B3n.svg
+ * License: CC BY-SA 3.0
+ *
+ * Rendering options:
+ * Zcash: img2txt -W 40 -H 20 -f utf8 -d none -g 0.7 Z-yellow.orange-logo.png
+ * Heart: img2txt -W 40 -H 20 -f utf8 -d none 2000px-Heart_corazón.svg.png
+ */
+const std::string METRICS_ART =
+"                                                                                \n"
+"                                                                                \n"
+"             :88SX@888@@X8:                    8;     %X        X%     ;8       \n"
+"          %%Xt%tt%SSSSS:XXXt@@              X            ::  ::            X    \n"
+"        @S;;tt%%%t    ;;::XXXXSX           %               SS               %   \n"
+"      .t:::;;%8888    88888tXXXX8;        S                                  S  \n"
+"     .%...:::8             8::XXX%;       X                                  X  \n"
+"     8888...:t888888X     8t;;::XX8       8                                  8  \n"
+"    %888888...:::;:8    :Xttt;;;::X@                                            \n"
+"    888888888...:St    8:%%tttt;;;:X       X                                X   \n"
+"    88888888888S8    :%;ttt%%tttt;;X        8                              8    \n"
+"    %888888888%t    8S:;;;tt%%%ttt;8          :                          :      \n"
+"     8t8888888     S8888888Stt%%%t@            ::                      ::       \n"
+"     .@tt888@              8;;ttt@;               t                  t          \n"
+"      .8ttt8@SSSSS    SXXXX%:;;;X;                  8              8            \n"
+"        X8ttt8888%    %88...::X8                      X.        .X              \n"
+"          %8@tt88;8888%8888%8X                          :;    ;:                \n"
+"             :@888@XXX@888:                                tt                   \n"
+"                                                                                \n"
+"                                                                                ";