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%% Copyright (c) 2022 Peter Morgan <peter.james.morgan@gmail.com> |
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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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-module(mcd_status). |
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-export([callback_mode/0]). |
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-export([lookup/1]). |
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-export([init/1]). |
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-export([start_link/0]). |
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-include_lib("stdlib/include/ms_transform.hrl"). |
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start_link() -> |
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gen_statem:start_link(?MODULE, [], []). |
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lookup(K) -> |
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case ets:lookup(?MODULE, K) of |
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[{K, V}] -> |
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V; |
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[] -> |
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:-( |
error(badarg, [K]) |
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end. |
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init([]) -> |
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process_flag(trap_exit, true), |
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ets:insert_new( |
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ets:new(?MODULE, [named_table]), |
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lists:flatmap( |
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fun dup_flip/1, |
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mcd:priv_consult("status.terms"))), |
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{ok, ready, #{}}. |
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dup_flip({K, V} = KV) -> |
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[KV, {V, K}]. |
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callback_mode() -> |
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handle_event_function. |