Mercurial > prosody-modules
view mod_mam/fallback_archive.lib.lua @ 3500:e86315c9b5c4
offline_hints: discard no-store hinted messages at mod_offline
This module will hook `message/offline/handle` and will skip offline
storage for messages hinted with `no-store` or `no-permanent-store`.
author | marc0s <marcos.devera@quobis.com> |
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date | Fri, 29 Mar 2019 17:06:18 +0100 |
parents | 03f6d9ed2903 |
children |
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-- luacheck: ignore 212/self local uuid = require "util.uuid".generate; local store = module:shared("archive"); local archive_store = { _provided_by = "mam"; name = "fallback"; }; function archive_store:append(username, key, value, when, with) local archive = store[username]; if not archive then archive = { [0] = 0 }; store[username] = archive; end local index = (archive[0] or #archive)+1; local item = { key = key, when = when, with = with, value = value }; if not key or archive[key] then key = uuid(); item.key = key; end archive[index] = item; archive[key] = index; archive[0] = index; return key; end function archive_store:find(username, query) local archive = store[username] or {}; local start, stop, step = 1, archive[0] or #archive, 1; local qstart, qend, qwith = -math.huge, math.huge; local limit; if query then if query.reverse then start, stop, step = stop, start, -1; if query.before and archive[query.before] then start = archive[query.before] - 1; end elseif query.after and archive[query.after] then start = archive[query.after] + 1; end qwith = query.with; limit = query.limit; qstart = query.start or qstart; qend = query["end"] or qend; end return function () if limit and limit <= 0 then return end for i = start, stop, step do local item = archive[i]; if (not qwith or qwith == item.with) and item.when >= qstart and item.when <= qend then if limit then limit = limit - 1; end start = i + step; -- Start on next item return item.key, item.value, item.when, item.with; end end end end function archive_store:delete(username, query) if not query or next(query) == nil then -- no specifics, delete everything store[username] = nil; return true; end local archive = store[username]; if not archive then return true; end -- no messages, nothing to delete local qstart = query.start or -math.huge; local qend = query["end"] or math.huge; local qwith = query.with; store[username] = nil; for i = 1, #archive do local item = archive[i]; local when, with = item.when, item.when; -- Add things that don't match the query if not ((not qwith or qwith == item.with) and item.when >= qstart and item.when <= qend) then self:append(username, item.key, item.value, when, with); end end return true; end return archive_store;