first commit

.gitignore

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+.rebar3
+_build
+_checkouts
+_vendor
+.eunit
+*.o
+*.beam
+*.plt
+*.swp
+*.swo
+.erlang.cookie
+ebin
+log
+erl_crash.dump
+.rebar
+logs
+.idea
+*.iml
+rebar3.crashdump
+*~

LICENSE.md

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+Copyright 2023 Erlang Punch
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+“Software”), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+mnesia_backends
+=====
+
+An OTP application
+
+Build
+-----
+
+    $ rebar3 compile

apps/mnesia_backends/src/mnesia_backends.app.src

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+{application, mnesia_backends,
+ [{description, "An OTP application"},
+  {vsn, "0.1.0"},
+  {registered, []},
+  {mod, {mnesia_backends_app, []}},
+  {applications,
+   [kernel,
+    stdlib
+   ]},
+  {env,[]},
+  {modules, []},
+
+  {licenses, ["Apache-2.0"]},
+  {links, []}
+ ]}.

apps/mnesia_backends/src/mnesia_backends_app.erl

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+%%%-------------------------------------------------------------------
+%% @doc mnesia_backends public API
+%% @end
+%%%-------------------------------------------------------------------
+
+-module(mnesia_backends_app).
+
+-behaviour(application).
+
+-export([start/2, stop/1]).
+
+start(_StartType, _StartArgs) ->
+    mnesia_backends_sup:start_link().
+
+stop(_State) ->
+    ok.
+
+%% internal functions

apps/mnesia_backends/src/mnesia_backends_sup.erl

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+%%%-------------------------------------------------------------------
+%% @doc mnesia_backends top level supervisor.
+%% @end
+%%%-------------------------------------------------------------------
+
+-module(mnesia_backends_sup).
+
+-behaviour(supervisor).
+
+-export([start_link/0]).
+
+-export([init/1]).
+
+-define(SERVER, ?MODULE).
+
+start_link() ->
+    supervisor:start_link({local, ?SERVER}, ?MODULE, []).
+
+%% sup_flags() = #{strategy => strategy(),         % optional
+%%                 intensity => non_neg_integer(), % optional
+%%                 period => pos_integer()}        % optional
+%% child_spec() = #{id => child_id(),       % mandatory
+%%                  start => mfargs(),      % mandatory
+%%                  restart => restart(),   % optional
+%%                  shutdown => shutdown(), % optional
+%%                  type => worker(),       % optional
+%%                  modules => modules()}   % optional
+init([]) ->
+    SupFlags = #{strategy => one_for_all,
+                 intensity => 0,
+                 period => 1},
+    ChildSpecs = [],
+    {ok, {SupFlags, ChildSpecs}}.
+
+%% internal functions

config/sys.config

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+[
+  {mnesia_backends, []}
+].

config/vm.args

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+-sname mnesia_backends
+
+-setcookie mnesia_backends_cookie
+
++K true
++A30

rebar.config

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+{erl_opts, [debug_info]}.
+{deps, []}.
+
+{relx, [{release, {mnesia_backends, "0.1.0"},
+         [mnesia_backends,
+          sasl]},
+
+        {mode, dev},
+
+        %% automatically picked up if the files
+        %% exist but can be set manually, which
+        %% is required if the names aren't exactly
+        %% sys.config and vm.args
+        {sys_config, "./config/sys.config"},
+        {vm_args, "./config/vm.args"}
+
+        %% the .src form of the configuration files do
+        %% not require setting RELX_REPLACE_OS_VARS
+        %% {sys_config_src, "./config/sys.config.src"},
+        %% {vm_args_src, "./config/vm.args.src"}
+]}.
+
+{profiles, [{prod, [{relx,
+                     [%% prod is the default mode when prod
+                      %% profile is used, so does not have
+                      %% to be explicitly included like this
+                      {mode, prod}
+
+                      %% use minimal mode to exclude ERTS
+                      %% {mode, minimal}
+                     ]
+            }]}]}.