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%%============================================================================== |
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%% Copyright 2017 Erlang Solutions Ltd. |
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%% |
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%% Licensed under the Apache License, Version 2.0 (the "License"); |
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%% you may not use this file except in compliance with the License. |
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%% You may obtain a copy of the License at |
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%% |
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%% http://www.apache.org/licenses/LICENSE-2.0 |
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%% |
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%% Unless required by applicable law or agreed to in writing, software |
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%% distributed under the License is distributed on an "AS IS" BASIS, |
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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%% See the License for the specific language governing permissions and |
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%% limitations under the License. |
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%%============================================================================== |
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-module(mod_global_distrib_disco). |
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-author('konrad.zemek@erlang-solutions.com'). |
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-behaviour(gen_mod). |
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-behaviour(mongoose_module_metrics). |
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-include("mongoose.hrl"). |
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-include("jlib.hrl"). |
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-export([start/2, stop/1, hooks/1, deps/2, disco_local_items/3]). |
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%%-------------------------------------------------------------------- |
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%% API |
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%%-------------------------------------------------------------------- |
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-spec start(mongooseim:host_type(), gen_mod:module_opts()) -> any(). |
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start(_HostType, _Opts) -> |
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ok. |
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-spec stop(mongooseim:host_type()) -> any(). |
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stop(_HostType) -> |
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ok. |
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-spec deps(mongooseim:host_type(), gen_mod:module_opts()) -> gen_mod_deps:deps(). |
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deps(_HostType, Opts) -> |
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[{mod_global_distrib_utils, Opts, hard}]. |
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%%-------------------------------------------------------------------- |
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%% Hooks implementation |
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%%-------------------------------------------------------------------- |
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-spec disco_local_items(Acc, Params, Extra) -> {ok, Acc} when |
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Acc :: mongoose_disco:item_acc(), |
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Params :: map(), |
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Extra :: map(). |
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disco_local_items(Acc = #{host_type := HostType, from_jid := From, node := <<>>}, _, _) -> |
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Domains = domains_for_disco(HostType, From), |
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?LOG_DEBUG(#{what => gd_domains_fetched_for_disco, domains => Domains}), |
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Items = [#{jid => Domain} || Domain <- Domains], |
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NewAcc = mongoose_disco:add_items(Items, Acc), |
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{ok, NewAcc}; |
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disco_local_items(Acc, _, _) -> |
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:-( |
{ok, Acc}. |
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%%-------------------------------------------------------------------- |
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%% Helpers |
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%%-------------------------------------------------------------------- |
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hooks(HostType) -> |
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[{disco_local_items, HostType, fun ?MODULE:disco_local_items/3, #{}, 99}]. |
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-spec domains_for_disco(mongooseim:host_type(), From :: jid:jid()) -> Domains :: [binary()]. |
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domains_for_disco(_HostType, #jid{ luser = <<>> } = _From) -> |
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%% Currently all non-user entities may discover all services |
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:-( |
mod_global_distrib_mapping:all_domains(); |
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domains_for_disco(HostType, _From) -> |
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%% mod_disco is running because it is the only caller of 'disco_local_items' |
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case gen_mod:get_module_opt(HostType, mod_disco, users_can_see_hidden_services) of |
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true -> |
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mod_global_distrib_mapping:all_domains(); |
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false -> |
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mod_global_distrib_mapping:public_domains() |
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end. |