daemon: use @N syntax to output_histogram for specific amounts

Makes debugging tx verification easier

src/daemon/command_parser_executor.cpp

@@ -493,20 +493,34 @@ bool t_command_parser_executor::flush_txpool(const std::vector<std::string>& arg
 
 bool t_command_parser_executor::output_histogram(const std::vector<std::string>& args)
 {
-  if (args.size() > 2) return false;
-
+  std::vector<uint64_t> amounts;
   uint64_t min_count = 3;
   uint64_t max_count = 0;
+  size_t n_raw = 0;
 
-  if (args.size() >= 1)
+  for (size_t n = 0; n < args.size(); ++n)
   {
-    min_count = boost::lexical_cast<uint64_t>(args[0]);
+    if (args[n][0] == '@')
+    {
+      amounts.push_back(boost::lexical_cast<uint64_t>(args[n].c_str() + 1));
+    }
+    else if (n_raw == 0)
+    {
+      min_count = boost::lexical_cast<uint64_t>(args[n]);
+      n_raw++;
+    }
+    else if (n_raw == 1)
+    {
+      max_count = boost::lexical_cast<uint64_t>(args[n]);
+      n_raw++;
+    }
+    else
+    {
+      std::cout << "Invalid syntax: more than two non-amount parameters" << std::endl;
+      return true;
+    }
   }
-  if (args.size() >= 2)
-  {
-    max_count = boost::lexical_cast<uint64_t>(args[1]);
-  }
-  return m_executor.output_histogram(min_count, max_count);
+  return m_executor.output_histogram(amounts, min_count, max_count);
 }
 
 bool t_command_parser_executor::print_coinbase_tx_sum(const std::vector<std::string>& args)

src/daemon/rpc_command_executor.cpp

@@ -1490,13 +1490,14 @@ bool t_rpc_command_executor::flush_txpool(const std::string &txid)
     return true;
 }
 
-bool t_rpc_command_executor::output_histogram(uint64_t min_count, uint64_t max_count)
+bool t_rpc_command_executor::output_histogram(const std::vector<uint64_t> &amounts, uint64_t min_count, uint64_t max_count)
 {
     cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::request req;
     cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::response res;
     std::string fail_message = "Unsuccessful";
     epee::json_rpc::error error_resp;
 
+    req.amounts = amounts;
     req.min_count = min_count;
     req.max_count = max_count;
     req.unlocked = false;

src/daemon/rpc_command_executor.h

@@ -137,7 +137,7 @@ public:
 
   bool flush_txpool(const std::string &txid);
 
-  bool output_histogram(uint64_t min_count, uint64_t max_count);
+  bool output_histogram(const std::vector<uint64_t> &amounts, uint64_t min_count, uint64_t max_count);
 
   bool print_coinbase_tx_sum(uint64_t height, uint64_t count);