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%%%------------------------------------------------------------------- |
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%%% @doc Stores mam user ids in cache. |
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%%% This module is a proxy for `mod_mam_rdbms_user' (it should be started). |
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%%% |
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%%% There are 2 hooks for `mam_archive_id': |
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%%% `cached_archive_id/3' and `store_archive_id/3'. |
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%%% |
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%%% This module supports several hosts. |
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%%% |
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%%% @end |
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%%%------------------------------------------------------------------- |
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-module(mod_mam_cache_user). |
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-behaviour(mongoose_module_metrics). |
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%% gen_mod handlers |
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-export([start/2, stop/1, supported_features/0]). |
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%% ejabberd handlers |
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-export([cached_archive_id/3, |
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store_archive_id/3, |
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remove_archive/4]). |
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-ignore_xref([start/2, stop/1, supported_features/0, |
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cached_archive_id/3, store_archive_id/3, remove_archive/4]). |
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%%==================================================================== |
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%% gen_mod callbacks |
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%%==================================================================== |
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-spec start(mongooseim:host_type(), gen_mod:module_opts()) -> ok. |
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start(HostType, Opts) -> |
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:-( |
start_cache(HostType, Opts), |
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:-( |
ejabberd_hooks:add(hooks(HostType, Opts)), |
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:-( |
ok. |
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-spec stop(HostType :: mongooseim:host_type()) -> ok. |
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stop(HostType) -> |
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:-( |
ejabberd_hooks:delete(hooks(HostType)), |
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:-( |
stop_cache(HostType), |
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:-( |
ok. |
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-spec supported_features() -> [atom()]. |
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supported_features() -> |
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:-( |
[dynamic_domains]. |
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-spec hooks(mongooseim:host_type()) -> [ejabberd_hooks:hook()]. |
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hooks(HostType) -> |
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:-( |
Opts = gen_mod:get_module_opts(HostType, ?MODULE), |
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:-( |
hooks(HostType, Opts). |
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-spec hooks(mongooseim:host_type(), gen_mod:module_opts()) -> any(). |
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hooks(HostType, Opts) -> |
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:-( |
PM = gen_mod:get_opt(pm, Opts, false), |
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:-( |
MUC = gen_mod:get_opt(muc, Opts, false), |
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:-( |
maybe_pm_hooks(PM, HostType) ++ maybe_muc_hooks(MUC, HostType). |
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:-( |
maybe_pm_hooks(true, HostType) -> pm_hooks(HostType); |
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:-( |
maybe_pm_hooks(false, _HostType) -> []. |
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:-( |
maybe_muc_hooks(true, HostType) -> muc_hooks(HostType); |
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:-( |
maybe_muc_hooks(false, _HostType) -> []. |
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pm_hooks(HostType) -> |
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:-( |
[{mam_archive_id, HostType, ?MODULE, cached_archive_id, 30}, |
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{mam_archive_id, HostType, ?MODULE, store_archive_id, 70}, |
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{mam_remove_archive, HostType, ?MODULE, remove_archive, 100}]. |
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muc_hooks(HostType) -> |
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:-( |
[{mam_muc_archive_id, HostType, ?MODULE, cached_archive_id, 30}, |
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{mam_muc_archive_id, HostType, ?MODULE, store_archive_id, 70}, |
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{mam_muc_remove_archive, HostType, ?MODULE, remove_archive, 100}]. |
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%%==================================================================== |
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%% API |
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%%==================================================================== |
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-spec cached_archive_id(undefined, mongooseim:host_type(), jid:jid()) -> |
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mod_mam:archive_id(). |
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cached_archive_id(undefined, HostType, ArcJid) -> |
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:-( |
case mongoose_user_cache:get_entry(HostType, ?MODULE, ArcJid) of |
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:-( |
#{id := ArchId} -> ArchId; |
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_ -> |
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:-( |
put(mam_not_cached_flag, true), |
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:-( |
undefined |
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end. |
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-spec store_archive_id(mod_mam:archive_id(), mongooseim:host_type(), jid:jid()) |
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-> mod_mam:archive_id(). |
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store_archive_id(ArchId, HostType, ArcJid) -> |
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:-( |
case erase(mam_not_cached_flag) of |
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undefined -> |
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:-( |
ArchId; |
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true -> |
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:-( |
mongoose_user_cache:merge_entry(HostType, ?MODULE, ArcJid, #{id => ArchId}), |
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:-( |
ArchId |
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end. |
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-spec remove_archive(Acc :: map(), HostType :: mongooseim:host_type(), |
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ArchId :: mod_mam:archive_id(), ArcJid :: jid:jid()) -> map(). |
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remove_archive(Acc, HostType, _UserID, ArcJid) -> |
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:-( |
mongoose_user_cache:delete_user(HostType, ?MODULE, ArcJid), |
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:-( |
Acc. |
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%%==================================================================== |
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%% internal |
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%%==================================================================== |
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-spec start_cache(mongooseim:host_type(), gen_mod:module_opts()) -> any(). |
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start_cache(HostType, Opts) -> |
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:-( |
mongoose_user_cache:start_new_cache(HostType, ?MODULE, Opts). |
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-spec stop_cache(mongooseim:host_type()) -> any(). |
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stop_cache(HostType) -> |
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:-( |
mongoose_user_cache:stop_cache(HostType, ?MODULE). |