From 56bababcdfce097a4e08cc3d1de8d798e7999ce7 Mon Sep 17 00:00:00 2001
From: Loic Blot <loic.blot@unix-experience.fr>
Date: Mon, 27 Apr 2020 08:31:37 +0200
Subject: Add MetricsBackend with prometheus counter support

---
 src/map.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'src/map.cpp')

diff --git a/src/map.cpp b/src/map.cpp
index 12e122124..5f1b984a4 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -144,7 +144,7 @@ bool Map::isNodeUnderground(v3s16 p)
 {
 	v3s16 blockpos = getNodeBlockPos(p);
 	MapBlock *block = getBlockNoCreateNoEx(blockpos);
-	return block && block->getIsUnderground(); 
+	return block && block->getIsUnderground();
 }
 
 bool Map::isValidPosition(v3s16 p)
@@ -1187,7 +1187,7 @@ bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes)
 	ServerMap
 */
 ServerMap::ServerMap(const std::string &savedir, IGameDef *gamedef,
-		EmergeManager *emerge):
+		EmergeManager *emerge, MetricsBackend *mb):
 	Map(dout_server, gamedef),
 	settings_mgr(g_settings, savedir + DIR_DELIM + "map_meta.txt"),
 	m_emerge(emerge)
@@ -1221,6 +1221,8 @@ ServerMap::ServerMap(const std::string &savedir, IGameDef *gamedef,
 	m_savedir = savedir;
 	m_map_saving_enabled = false;
 
+	m_save_time_counter = mb->addCounter("minetest_core_map_save_time", "Map save time (in nanoseconds)");
+
 	try {
 		// If directory exists, check contents and load if possible
 		if (fs::PathExists(m_savedir)) {
@@ -1777,6 +1779,8 @@ void ServerMap::save(ModifiedState save_level)
 		return;
 	}
 
+	u64 start_time = porting::getTimeNs();
+
 	if(save_level == MOD_STATE_CLEAN)
 		infostream<<"ServerMap: Saving whole map, this can take time."
 				<<std::endl;
@@ -1835,6 +1839,9 @@ void ServerMap::save(ModifiedState save_level)
 		infostream<<"Blocks modified by: "<<std::endl;
 		modprofiler.print(infostream);
 	}
+
+	auto end_time = porting::getTimeNs();
+	m_save_time_counter->increment(end_time - start_time);
 }
 
 void ServerMap::listAllLoadableBlocks(std::vector<v3s16> &dst)
-- 
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