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%% Copyright (c) 2023 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(pgmp_db). |
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-behaviour(gen_statem). |
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-export([callback_mode/0]). |
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-export([config/1]). |
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-export([handle_event/4]). |
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-export([init/1]). |
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-export([start_link/1]). |
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-export([start_replication_on_publication/2]). |
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-export([stop_replication_on_publication/2]). |
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-export([types/1]). |
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-export([which_groups/1]). |
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start_link(Arg) -> |
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gen_statem:start_link(?MODULE, [Arg], envy_gen:options(?MODULE)). |
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start_replication_on_publication(Server, Publication) -> |
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gen_statem:call(Server, {?FUNCTION_NAME, Publication}). |
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stop_replication_on_publication(Server, Publication) -> |
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:-( |
gen_statem:call(Server, {?FUNCTION_NAME, Publication}). |
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types(Server) -> |
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:-( |
gen_statem:call(Server, ?FUNCTION_NAME). |
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config(Server) -> |
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:-( |
gen_statem:call(Server, ?FUNCTION_NAME). |
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which_groups(Server) -> |
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:-( |
gen_statem:call(Server, ?FUNCTION_NAME). |
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init([DB]) -> |
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{ok, ready, #{supervisor => hd(get('$ancestors')), db => DB}}. |
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callback_mode() -> |
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handle_event_function. |
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handle_event({call, From}, |
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{start_replication_on_publication, Publication}, |
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_, |
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#{supervisor := Supervisor, db := DB}) -> |
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5 |
{keep_state_and_data, |
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{reply, |
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From, |
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pgmp_rep_sup:start_child( |
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pgmp_sup:get_child_pid(Supervisor, rep_sup), |
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DB, |
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Publication)}}; |
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handle_event({call, From}, |
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{stop_replication_on_publication, Publication}, |
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_, |
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#{supervisor := Supervisor}) -> |
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:-( |
{keep_state_and_data, |
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{reply, |
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From, |
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pgmp_rep_sup:terminate_child( |
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pgmp_sup:get_child_pid(Supervisor, rep_sup), |
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Publication)}}; |
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handle_event({call, From}, types, _, #{supervisor := Supervisor}) -> |
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:-( |
{keep_state_and_data, |
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{reply, |
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From, |
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pgmp_sup:get_child_pid( |
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pgmp_sup:get_child_pid(Supervisor, int_sup), |
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types)}}; |
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handle_event({call, From}, config, _, #{db := Config}) -> |
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:-( |
{keep_state_and_data, {reply, From, Config}}; |
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handle_event({call, From}, which_groups, _, #{db := #{scope := Scope}}) -> |
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:-( |
{keep_state_and_data, {reply, From, pg:which_groups(Scope)}}. |