mod_cloud_notify_extensions: Add note about dependency
Noting here because people might not click through to see it on the
mod_cloud_notify_encrypted page.
local store = module:open_store("lastlog2");
local measure_d1 = module:measure("active_users_1d", "amount");
local measure_d7 = module:measure("active_users_7d", "amount");
local measure_d30 = module:measure("active_users_30d", "amount");
function update_calculations()
module:log("debug", "Calculating active users");
local host_user_sessions = prosody.hosts[module.host].sessions;
local active_d1, active_d7, active_d30 = 0, 0, 0;
local now = os.time();
for username in store:users() do
if host_user_sessions[username] then
-- Active now
active_d1, active_d7, active_d30 =
active_d1 + 1, active_d7 + 1, active_d30 + 1;
else
local lastlog_data = store:get(username);
if lastlog_data then
-- Due to server restarts/crashes/etc. some events
-- may not always get recorded, so we'll just take the
-- latest as a sign of last activity
local last_active = math.max(
lastlog_data.login and lastlog_data.login.timestamp or 0,
lastlog_data.logout and lastlog_data.logout.timestamp or 0
);
if now - last_active < 86400 then
active_d1 = active_d1 + 1;
end
if now - last_active < 86400*7 then
active_d7 = active_d7 + 1;
end
if now - last_active < 86400*30 then
active_d30 = active_d30 + 1;
end
end
end
end
module:log("debug", "Active users (took %ds): %d (24h), %d (7d), %d (30d)", os.time()-now, active_d1, active_d7, active_d30);
measure_d1(active_d1);
measure_d7(active_d7);
measure_d30(active_d30);
return 3600 + (300*math.random());
end
module:add_timer(15, update_calculations);