From 5856c2fd0e976ca864a14c90feab92f133832bbe Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Tue, 21 Feb 2023 20:10:16 -0800
Subject: [PATCH] ircd::m::room::stats: Optimize byte counter with pipelined
 iteration.

---
 matrix/room_stats.cc | 25 ++++++++-----------------
 1 file changed, 8 insertions(+), 17 deletions(-)

diff --git a/matrix/room_stats.cc b/matrix/room_stats.cc
index 65e1382f7..fbc764c68 100644
--- a/matrix/room_stats.cc
+++ b/matrix/room_stats.cc
@@ -32,25 +32,16 @@ size_t
 ircd::m::room::stats::bytes_json(const m::room &room)
 {
 	size_t ret(0);
-	for(m::room::events it(room); it; --it)
+	const room::iterate iterate
 	{
-		const m::event::idx &event_idx
-		{
-			it.event_idx()
-		};
+		room
+	};
 
-		const byte_view<string_view> key
-		{
-			event_idx
-		};
-
-		static const db::gopts gopts
-		{
-			.cache = false,
-		};
-
-		ret += db::bytes_value(m::dbs::event_json, key, gopts);
-	}
+	iterate.for_each([&ret]
+	(const string_view &event, const auto &depth, const auto &event_idx)
+	{
+		ret += size(event);
+	});
 
 	return ret;
 }