Add a DEBUG_SQL_QUERIES to log info about the executed SQL queries

fix #3324

src/database/query.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <biboumi.h>
+
 #include <utils/optional_bool.hpp>
 #include <database/statement.hpp>
 #include <database/column.hpp>
@@ -13,6 +15,20 @@ void actual_bind(Statement& statement, const std::string& value, int index);
 void actual_bind(Statement& statement, const std::size_t value, int index);
 void actual_bind(Statement& statement, const OptionalBool& value, int index);
 
+#ifdef DEBUG_SQL_QUERIES
+#include <utils/scopetimer.hpp>
+
+inline auto make_sql_timer()
+{
+  return make_scope_timer([](const std::chrono::steady_clock::duration& elapsed)
+                          {
+                            const auto seconds = std::chrono::duration_cast<std::chrono::seconds>(elapsed);
+                            const auto rest = elapsed - seconds;
+                            log_debug("Query executed in ", seconds.count(), ".", rest.count(), "s.");
+                          });
+}
+#endif
+
 struct Query
 {
     std::string body;
@@ -22,6 +38,18 @@ struct Query
     Query(std::string str):
         body(std::move(str))
     {}
+
+#ifdef DEBUG_SQL_QUERIES
+    auto log_and_time()
+    {
+       std::ostringstream os;
+       os << this->body << "; ";
+       for (const auto& param: this->params)
+         os << "'" << param << "' ";
+       log_debug("SQL QUERY: ", os.str());
+       return make_sql_timer();
+    }
+#endif
 };
 
 template <typename ColumnType>
@@ -58,3 +86,4 @@ operator<<(Query& query, const Integer& i)
   actual_add_param(query, i);
   return query;
 }
+