added more metrics to statement_cache

source/orm/sql/statement_cache.cpp

@@ -34,18 +34,21 @@ public:
     execution_metrics metrics{std::chrono::steady_clock::now()};
 
     auto result = try_with_retry([this, &bindings, &metrics]() -> utils::result<size_t, utils::error> {
+      const auto query = sql();
       if (!try_lock()) {
         ++metrics.lock_attempts;
-        bus_.publish<statement_lock_failed_event>({sql(), std::chrono::steady_clock::now(), metrics.lock_attempt_start});
+        const auto now = std::chrono::steady_clock::now();
+        bus_.publish(statement_lock_failed_event{query, now, now - metrics.lock_attempt_start});
         return utils::failure(utils::error{
           error_code::STATEMENT_LOCKED,
           "Failed to execute statement because it is already in use"
         });
       }
-      metrics.lock_acquired = std::chrono::steady_clock::now();
-      bus_.publish<statement_lock_acquired_event>({sql(), std::chrono::steady_clock::now(), metrics.lock_attempt_start, metrics.lock_acquired});
+      const auto now = std::chrono::steady_clock::now();
+      bus_.publish(statement_lock_acquired_event{query, now, now - metrics.lock_attempt_start});
 
       auto guard = statement_guard(*this);
+      metrics.execution_start = std::chrono::steady_clock::now();
       if (const auto conn = pool_.acquire(connection_id_); !conn.valid()) {
         return utils::failure(utils::error{
           error_code::EXECUTE_FAILED,
@@ -53,11 +56,10 @@ public:
         });
       }
 
-      metrics.execution_start = std::chrono::steady_clock::now();
       auto execution_result = statement_->execute(bindings);
       metrics.execution_end = std::chrono::steady_clock::now();
 
-      bus_.publish<statement_execution_event>({sql(), std::chrono::steady_clock::now(), metrics.execution_start, metrics.execution_end});
+      bus_.publish(statement_execution_event{query, metrics.execution_end, metrics.execution_end - metrics.execution_start});
 
       return execution_result;
     });