runtime: improve startup observability

src/db/Main.cpp

@@ -45,6 +45,43 @@ extern const char * _malloc_options;
 
 extern void WriteVersion();
 
+namespace
+{
+const char* BoolState(bool value)
+{
+	return value ? "on" : "off";
+}
+
+const char* EmptyToLabel(const std::string& value, const char* fallback)
+{
+	return value.empty() ? fallback : value.c_str();
+}
+
+void LogStartupSummary(int heart_fps, int player_id_start)
+{
+	sys_log(0,
+		"[STARTUP] locale=%s table_postfix=%s player_db=%s player_id_start=%d heart_fps=%d test_server=%s log=%s hotbackup=%s",
+		EmptyToLabel(g_stLocale, "<unset>"),
+		EmptyToLabel(g_stTablePostfix, "<none>"),
+		EmptyToLabel(g_stPlayerDBName, "<unset>"),
+		player_id_start,
+		heart_fps,
+		BoolState(g_test_server),
+		BoolState(g_log != 0),
+		BoolState(g_bHotBackup)
+	);
+
+	sys_log(0,
+		"[STARTUP] cache_flush player=%d item=%d pricelist=%d logout=%d locale_name_column=%s",
+		g_iPlayerCacheFlushSeconds,
+		g_iItemCacheFlushSeconds,
+		g_iItemPriceListTableCacheFlushSeconds,
+		g_iLogoutSeconds,
+		EmptyToLabel(g_stLocaleNameColumn, "<unset>")
+	);
+}
+}
+
 void emergency_sig(int sig)
 {
 	if (sig == SIGSEGV)
@@ -374,6 +411,8 @@ int Start()
 		return false;
 	}
 
+	LogStartupSummary(heart_beat, iIDStart);
+
 #ifndef OS_WINDOWS
 	signal(SIGUSR1, emergency_sig);
 #endif
@@ -409,4 +448,3 @@ const char * GetPlayerDBName()
 {
 	return g_stPlayerDBName.c_str();
 }
-