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-module(mod_keystore_cets). |
| 2 |
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-behaviour(mod_keystore_backend). |
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-export([init/2, |
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stop/1, |
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init_ram_key/1, |
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get_key/1]). |
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%% CETS callbacks |
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-export([handle_conflict/2]). |
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-ignore_xref([get_key/1, init/2, init_ram_key/1]). |
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-include("mod_keystore.hrl"). |
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-include("mongoose_logger.hrl"). |
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table_name(HostType) -> |
| 18 |
:-( |
binary_to_atom(<<"cets_keystore_", HostType/binary>>). |
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-spec init(mongooseim:host_type(), gen_mod:module_opts()) -> ok. |
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init(HostType, _Opts) -> |
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%% There is no logic to remove keys. |
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%% Separate table per HostType (so we could remove the table once the module is unloaded). |
| 24 |
:-( |
Tab = table_name(HostType), |
| 25 |
:-( |
cets:start(Tab, #{handle_conflict => fun ?MODULE:handle_conflict/2}), |
| 26 |
:-( |
cets_discovery:add_table(mongoose_cets_discovery, Tab), |
| 27 |
:-( |
ok. |
| 28 |
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| 29 |
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-spec stop(mongooseim:host_type()) -> ok. |
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stop(HostType) -> |
| 31 |
:-( |
Tab = table_name(HostType), |
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:-( |
cets_discovery:delete_table(mongoose_cets_discovery, Tab), |
| 33 |
:-( |
cets:stop(Tab), |
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:-( |
ok. |
| 35 |
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%% We need to choose one key consistently. |
| 37 |
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handle_conflict(Rec1, Rec2) -> |
| 38 |
:-( |
max(Rec1, Rec2). |
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-spec init_ram_key(ProposedKey) -> Result when |
| 41 |
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ProposedKey :: mod_keystore:key(), |
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Result :: {ok, ActualKey} | {error, init_ram_key_failed}, |
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ActualKey :: mod_keystore:key(). |
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init_ram_key(#key{id = Id = {_, HostType}, key = PropKey}) -> |
| 45 |
:-( |
Tab = table_name(HostType), |
| 46 |
:-( |
{_, [{Id, Key}]} = cets:insert_new_or_lookup(Tab, {Id, PropKey}), |
| 47 |
:-( |
{ok, #key{id = Id, key = Key}}. |
| 48 |
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| 49 |
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-spec get_key(Id :: mod_keystore:key_id()) -> mod_keystore:key_list(). |
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get_key(Id = {_, HostType}) -> |
| 51 |
:-( |
Tab = table_name(HostType), |
| 52 |
:-( |
ets:lookup(Tab, Id). |