testing monero emission thread

main.cpp

@@ -128,6 +128,19 @@ int main(int ac, const char* av[]) {
 
     cout << blockchain_path << endl;
 
+    if (!xmreg::CurrentBlockchainStatus::init_monero_blockchain())
+    {
+        cerr << "Error accessing blockchain." << endl;
+        return EXIT_FAILURE;
+    }
+
+    // launch the status monitoring thread so that it keeps track of blockchain
+    // info, e.g., current height. Information from this thread is used
+    // by tx searching threads that are launched for each user independently,
+    // when they log back or create new account.
+    xmreg::CurrentBlockchainStatus::start_monitor_blockchain_thread();
+
+
     // create instance of our MicroCore
     // and make pointer to the Blockchain
     xmreg::MicroCore mcore;

src/CMakeLists.txt

@@ -6,7 +6,7 @@ set(SOURCE_HEADERS
         MicroCore.h
 		tools.h
 		monero_headers.h
-        )
+		CurrentBlockchainStatus.h)
 
 set(SOURCE_FILES
 		MicroCore.cpp
@@ -14,7 +14,7 @@ set(SOURCE_FILES
 		CmdLineOptions.cpp
 		page.h
 		rpccalls.cpp rpccalls.h
-		version.h.in)
+		version.h.in CurrentBlockchainStatus.cpp)
 
 # make static library called libmyxrm
 # that we are going to link to

src/CurrentBlockchainStatus.cpp

@@ -0,0 +1,256 @@
+//
+// Created by mwo on 16/05/17.
+//
+
+#include "CurrentBlockchainStatus.h"
+
+namespace xmreg
+{
+
+using namespace std;
+
+
+
+bool
+CurrentBlockchainStatus::init_monero_blockchain()
+{
+    // set  monero log output level
+    uint32_t log_level = 0;
+    mlog_configure(mlog_get_default_log_path(""), true);
+
+    mcore = unique_ptr<xmreg::MicroCore>(new xmreg::MicroCore{});
+
+    // initialize the core using the blockchain path
+    if (!mcore->init(blockchain_path))
+    {
+        cerr << "Error accessing blockchain." << endl;
+        return false;
+    }
+
+    // get the high level Blockchain object to interact
+    // with the blockchain lmdb database
+    core_storage = &(mcore->get_core());
+
+    return true;
+}
+
+
+void
+CurrentBlockchainStatus::start_monitor_blockchain_thread()
+{
+
+    string emmision_saved_file = blockchain_path + output_file;
+
+    if (boost::filesystem::exists(emmision_saved_file))
+    {
+        if (!load_current_emission_amount())
+        {
+            cerr << "Cant read or has incorrect format: " << emmision_saved_file << endl;
+            return;
+        }
+    }
+
+    if (!is_running)
+    {
+        m_thread = std::thread{[]()
+           {
+               while (true)
+               {
+                   current_height = core_storage->get_current_blockchain_height();
+
+                   update_current_emission_amount();
+
+                   save_current_emission_amount();
+
+                   if (searched_blk_no < current_height - 1000)
+                   {
+                       std::this_thread::sleep_for(std::chrono::seconds(1));
+                   }
+                   else
+                   {
+                       std::this_thread::sleep_for(std::chrono::seconds(60));
+                   }
+               }
+           }};
+
+        is_running = true;
+    }
+}
+
+
+void
+CurrentBlockchainStatus::update_current_emission_amount()
+{
+
+    cout << "updating emission rate: " << current_height << endl;
+
+    uint64_t no_of_blocks_to_search_at_once {1000};
+
+    uint64_t blk_no = searched_blk_no;
+
+    uint64_t end_block = blk_no + no_of_blocks_to_search_at_once;
+
+    uint64_t current_blockchain_height = current_height;
+
+    end_block = end_block > current_blockchain_height ? current_blockchain_height : end_block;
+
+    uint64_t current_emission_amount {0};
+    uint64_t current_fee_amount {0};
+
+    while (blk_no < end_block)
+    {
+
+        block blk;
+
+        mcore->get_block_by_height(blk_no, blk);
+
+        uint64_t coinbase_amount = get_outs_money_amount(blk.miner_tx);
+
+        std::list<transaction> txs;
+        std::list<crypto::hash> missed_txs;
+
+        uint64_t tx_fee_amount = 0;
+
+        core_storage->get_transactions(blk.tx_hashes, txs, missed_txs);
+
+        for(const auto& tx: txs)
+        {
+            tx_fee_amount += get_tx_fee(tx);
+        }
+
+        current_emission_amount += coinbase_amount - tx_fee_amount;
+        current_fee_amount += tx_fee_amount;
+
+        ++blk_no;
+    }
+
+    searched_blk_no = blk_no;
+    total_emission_amount += current_emission_amount;
+    total_fee_amount += current_fee_amount;
+
+    cout << "blk: " << blk_no
+         << " total_emission_amount: " << xmr_amount_to_str(uint64_t(total_emission_amount))
+         << " total_fee_amount: " << xmr_amount_to_str(uint64_t(total_fee_amount))
+         << endl;
+}
+
+
+
+bool
+CurrentBlockchainStatus::save_current_emission_amount()
+{
+
+    string emmision_saved_file = blockchain_path + output_file;
+
+    ofstream out(emmision_saved_file);
+
+    if( !out )
+    {
+        cerr << "Couldn't open file."  << endl;
+        return false;
+    }
+
+    uint64_t check_sum = uint64_t(searched_blk_no)
+                         + uint64_t(total_emission_amount)
+                         + uint64_t(total_fee_amount);
+
+    string out_line = to_string(searched_blk_no)
+                      + "," + to_string(total_emission_amount)
+                      + "," + to_string(total_fee_amount)
+                      + "," + to_string(check_sum);
+
+    out << out_line << flush;
+
+    return true;
+}
+
+
+bool
+CurrentBlockchainStatus::load_current_emission_amount()
+{
+    string emmision_saved_file = blockchain_path + output_file;
+
+    string last_saved_emmision = xmreg::read(emmision_saved_file);
+
+    if (last_saved_emmision.empty()) {
+        cerr << "Couldn't open file." << endl;
+        return false;
+    }
+
+    vector<string> strs;
+    boost::split(strs, last_saved_emmision, boost::is_any_of(","));
+
+    if (strs.empty()) {
+        cerr << "Problem spliting string values form  emission_amount." << endl;
+        return false;
+    }
+
+    uint64_t read_check_sum{0};
+
+    try {
+        searched_blk_no = boost::lexical_cast<uint64_t>(strs.at(0));
+        total_emission_amount = boost::lexical_cast<uint64_t>(strs.at(1));
+        total_fee_amount = boost::lexical_cast<uint64_t>(strs.at(2));
+        read_check_sum = boost::lexical_cast<uint64_t>(strs.at(3));
+    }
+    catch (boost::bad_lexical_cast &e) {
+        cerr << "Cant parse to number: " << last_saved_emmision << endl;
+        return false;
+    }
+
+    uint64_t check_sum = uint64_t(searched_blk_no)
+                         + uint64_t(total_emission_amount)
+                         + uint64_t(total_fee_amount);
+
+    if (read_check_sum != check_sum) {
+        cerr << "read_check_sum != check_sum: "
+             << read_check_sum << " != " << check_sum
+             << endl;
+
+        return false;
+    }
+
+    return true;
+
+}
+
+vector<uint64_t>
+CurrentBlockchainStatus::get_emission_amount()
+{
+
+    uint64_t searched_block  = searched_blk_no;
+    uint64_t emission_amount = total_emission_amount;
+    uint64_t fee_amount      = total_fee_amount;
+
+    return {searched_block, emission_amount, fee_amount};
+
+}
+
+bool
+CurrentBlockchainStatus::is_thread_running()
+{
+   return is_running;
+}
+
+string CurrentBlockchainStatus::blockchain_path{"/home/mwo/.bitmonero/lmdb"};
+
+string CurrentBlockchainStatus::output_file {"/emission_amount.txt"};
+
+string CurrentBlockchainStatus::deamon_url{"http:://127.0.0.1:18081"};
+
+atomic<uint64_t> CurrentBlockchainStatus::current_height {0};
+
+atomic<uint64_t> CurrentBlockchainStatus::total_emission_amount {0} ;
+
+atomic<uint64_t> CurrentBlockchainStatus::total_fee_amount {0} ;
+
+atomic<uint64_t> CurrentBlockchainStatus::searched_blk_no {0};
+
+std::thread      CurrentBlockchainStatus::m_thread;
+
+atomic<bool>     CurrentBlockchainStatus::is_running {false};
+
+cryptonote::Blockchain*       CurrentBlockchainStatus::core_storage;
+unique_ptr<xmreg::MicroCore>  CurrentBlockchainStatus::mcore;
+
+}

src/CurrentBlockchainStatus.h

@@ -0,0 +1,73 @@
+//
+// Created by mwo on 16/05/17.
+//
+
+#ifndef XMRBLOCKS_CURRENTBLOCKCHAINSTATUS_H
+#define XMRBLOCKS_CURRENTBLOCKCHAINSTATUS_H
+
+#include "MicroCore.h"
+
+#include <boost/algorithm/string.hpp>
+
+#include <iostream>
+#include <memory>
+#include <thread>
+#include <mutex>
+#include <atomic>
+
+namespace xmreg
+{
+
+using namespace std;
+
+class CurrentBlockchainStatus
+{
+    static string blockchain_path;
+
+    static string output_file;
+
+    static string deamon_url;
+
+    static atomic<uint64_t> current_height;
+
+    static atomic<uint64_t> total_emission_amount;
+    static atomic<uint64_t> total_fee_amount;
+
+    static atomic<uint64_t> searched_blk_no;
+
+    static std::thread m_thread;
+
+    static atomic<bool> is_running;
+
+    // make object for accessing the blockchain here
+    static unique_ptr<xmreg::MicroCore> mcore;
+    static cryptonote::Blockchain *core_storage;
+
+
+public:
+    static void
+    start_monitor_blockchain_thread();
+
+    static bool
+    init_monero_blockchain();
+
+    static void
+    update_current_emission_amount();
+
+    static bool
+    save_current_emission_amount();
+
+    static bool
+    load_current_emission_amount();
+
+    static vector<uint64_t>
+    get_emission_amount();
+
+    static bool
+    is_thread_running();
+
+};
+
+}
+
+#endif //XMRBLOCKS_CURRENTBLOCKCHAINSTATUS_H

src/page.h

@@ -17,6 +17,8 @@
 #include "tools.h"
 #include "rpccalls.h"
 
+#include "CurrentBlockchainStatus.h"
+
 #include "../ext/crow/http_request.h"
 
 #include "../ext/vpetrigocaches/cache.hpp"
@@ -748,7 +750,7 @@ namespace xmreg
                     context["network_info"] = mstch::map {
                             {"difficulty"         , j_network_info["difficulty"].get<uint64_t>()},
                             {"hash_rate"          , difficulty},
-                            {"fee_per_kb", xmreg::xmr_amount_to_str(j_network_info["fee_per_kb"], "{:0.12f}")}
+                            {"fee_per_kb"         , print_money(j_network_info["fee_per_kb"])}
                     };
                 }
             }
@@ -757,6 +759,27 @@ namespace xmreg
                 cerr  << "network_info future not ready yet, skipping." << endl;
             }
 
+            if (CurrentBlockchainStatus::is_thread_running())
+            {
+                vector<uint64_t> emission_values
+                        = CurrentBlockchainStatus::get_emission_amount();
+
+                string emission_blk_no     = std::to_string(emission_values.at(0) - 1);
+                string emission_amount     = xmr_amount_to_str(emission_values.at(1), "{:0.3f}");
+                string emission_fee_amount = xmr_amount_to_str(emission_values.at(2), "{:0.3f}");
+
+                context["emission"] = mstch::map {
+                        {"blk_no"    , emission_blk_no},
+                        {"amount"    , emission_amount},
+                        {"fee_amount", emission_fee_amount}
+                };
+            }
+            else
+            {
+                cerr  << "emission thread not running, skipping." << endl;
+            }
+
+
             // get memory pool rendered template
             string mempool_html = mempool(false, no_of_mempool_tx_of_frontpage);
 

src/templates/index2.html

@@ -35,14 +35,19 @@
 
 
     {{#network_info}}
-
+        <h3 style="font-size: 12px; margin-top: 5px; margin-bottom: 3">
-        <h3 style="font-size: 12px; margin-top: 10px">
             Network difficulty: {{difficulty}}
             | Hash rate: {{hash_rate}}
             | Fee per kb: {{fee_per_kb}}
         </h3>
     {{/network_info}}
 
+    {{#emission}}
+        <h3 style="font-size: 12px; margin-top: 2px">
+            Monero emission (fees) is {{amount}} ({{fee_amount}}) as of {{blk_no}} block
+        </h3>
+    {{/emission}}
+
 
 </div>