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core.rostermanager: Cache rosters of offline users for faster access (fixes #1233)

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(grafted from 42a3e3a2824822cef7640ac56d182c59bdd4224e)
This commit is contained in:
Kim Alvefur 2018-12-16 02:56:11 +01:00
parent 9beff3d274
commit bb3d150756
1 changed files with 22 additions and 0 deletions
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22
core/rostermanager.lua
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@ -12,6 +12,7 @@
local log = require "util.logger".init("rostermanager");
local new_id = require "util.id".short;
local new_cache = require "util.cache".new;
local pairs = pairs;
local tostring = tostring;
@ -111,6 +112,23 @@ local function load_roster(username, host)
else -- Attempt to load roster for non-loaded user
log("debug", "load_roster: loading for offline user: %s", jid);
end
local roster_cache = hosts[host] and hosts[host].roster_cache;
if not roster_cache then
if hosts[host] then
roster_cache = new_cache(1024);
hosts[host].roster_cache = roster_cache;
end
else
roster = roster_cache:get(jid);
if roster then
log("debug", "load_roster: cache hit");
roster_cache:set(jid, roster);
if user then user.roster = roster; end
return roster;
else
log("debug", "load_roster: cache miss, loading from storage");
end
end
local roster_store = storagemanager.open(host, "roster", "keyval");
local data, err = roster_store:get(username);
roster = data or {};
@ -134,6 +152,10 @@ local function load_roster(username, host)
if not err then
hosts[host].events.fire_event("roster-load", { username = username, host = host, roster = roster });
end
if roster_cache and not user then
log("debug", "load_roster: caching loaded roster");
roster_cache:set(jid, roster);
end
return roster, err;
end