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%% @doc Caches info about non-anonymous users using a queue of ets tables |
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-module(mod_cache_users). |
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-include("mongoose_config_spec.hrl"). |
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-behaviour(gen_mod). |
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%% gen_mod API |
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-export([start/2, stop/1, hooks/1, config_spec/0, supported_features/0]). |
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%% Hooks. |
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-export([does_cached_user_exist/3, maybe_put_user_into_cache/3, |
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remove_user/3, remove_domain/3]). |
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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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mongoose_user_cache:start_new_cache(HostType, ?MODULE, Opts), |
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ok. |
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-spec stop(mongooseim:host_type()) -> ok. |
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stop(HostType) -> |
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mongoose_user_cache:stop_cache(HostType, ?MODULE), |
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ok. |
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-spec config_spec() -> mongoose_config_spec:config_section(). |
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config_spec() -> |
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#section{items = Items, |
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defaults = Defaults} = Sec = mongoose_user_cache:config_spec(), |
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Sec#section{items = maps:remove(<<"module">>, Items), |
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defaults = maps:remove(<<"module">>, Defaults)}. |
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-spec supported_features() -> [atom()]. |
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supported_features() -> |
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[dynamic_domains]. |
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hooks(HostType) -> |
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[ |
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%% These hooks must run before and after the ejabberd_auth does_user_exist hook |
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{does_user_exist, HostType, fun ?MODULE:does_cached_user_exist/3, #{}, 30}, |
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{does_user_exist, HostType, fun ?MODULE:maybe_put_user_into_cache/3, #{}, 70}, |
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%% It is important that these two handlers happen _after_ ejabberd_auth |
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%% but _before_ all other modules |
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{remove_user, HostType, fun ?MODULE:remove_user/3, #{}, 10}, |
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{remove_domain, HostType, fun ?MODULE:remove_domain/3, #{}, 20} |
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]. |
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%%==================================================================== |
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%% Hooks |
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%%==================================================================== |
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-spec remove_user(Acc, Params, Extra) -> {ok, Acc} when |
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Acc :: mongoose_acc:t(), |
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Params :: #{jid := jid:jid()}, |
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Extra :: #{host_type := mongooseim:host_type()}. |
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remove_user(Acc, #{jid := Jid}, #{host_type := HostType}) -> |
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2965 |
mongoose_user_cache:delete_user(HostType, ?MODULE, Jid), |
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{ok, Acc}. |
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-spec remove_domain(Acc, Params, Extra) -> {ok , Acc} when |
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Acc :: mongoose_domain_api:remove_domain_acc(), |
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Params :: #{domain := jid:lserver()}, |
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Extra :: #{host_type := mongooseim:host_type()}. |
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remove_domain(Acc, #{domain := Domain}, #{host_type := HostType}) -> |
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:-( |
mongoose_user_cache:delete_domain(HostType, ?MODULE, Domain), |
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{ok, Acc}. |
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-spec does_cached_user_exist(Acc, Params, Extra) -> {stop | ok , Acc} when |
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Acc :: boolean(), |
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Params :: #{jid := jid:jid(), request_type := ejabberd_auth:exist_type()}, |
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Extra :: #{host_type := mongooseim:host_type()}. |
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does_cached_user_exist(false, |
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#{jid := Jid, request_type := stored}, |
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#{host_type := HostType}) -> |
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case mongoose_user_cache:is_member(HostType, ?MODULE, Jid) of |
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true -> {stop, true}; |
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false -> {ok, false} |
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end; |
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does_cached_user_exist(Acc, _, _) -> |
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:-( |
{ok, Acc}. |
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-spec maybe_put_user_into_cache(Acc, Params, Extra) -> {ok , Acc} when |
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Acc :: boolean(), |
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Params :: #{jid := jid:jid(), request_type := ejabberd_auth:exist_type()}, |
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Extra :: #{host_type := mongooseim:host_type()}. |
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maybe_put_user_into_cache(true, |
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#{jid := Jid, request_type := stored}, |
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#{host_type := HostType}) -> |
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mongoose_user_cache:merge_entry(HostType, ?MODULE, Jid, #{}), |
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{ok, true}; |
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maybe_put_user_into_cache(Acc, _, _) -> |
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{ok, Acc}. |