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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(msmp_status_variable). |
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-feature(maybe_expr, enable). |
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-export([decode/0]). |
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-import(scran_branch, [alt/1]). |
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-import(scran_bytes, [tag/1]). |
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-import(scran_bytes, [take/1]). |
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-import(scran_combinator, [rest/0]). |
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-import(scran_multi, [many1/1]). |
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-import(scran_result, [into_map/1]). |
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-import(scran_result, [kv/2]). |
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-import(scran_sequence, [preceded/2]). |
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-import(scran_sequence, [sequence/1]). |
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-include_lib("kernel/include/logger.hrl"). |
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-on_load(on_load/0). |
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decode() -> |
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fun |
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(<<>>) -> |
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{<<>>, #{}}; |
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(Input) -> |
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(variables( |
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alt([flags2(), |
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sql_mode(), |
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catalog_nz(), |
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charset(), |
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table_map_for_update(), |
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ddl_xid(), |
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default_collation_for_utf8mb4(), |
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%% mariadb |
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xid(), |
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%% catch all |
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unknown()])))(Input) |
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end. |
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variables(Parser) -> |
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fun |
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(Input) -> |
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(into_map(many1(Parser)))(Input) |
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end. |
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flags2() -> |
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fun |
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(Input) -> |
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(variable(?FUNCTION_NAME, take(4)))(Input) |
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end. |
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sql_mode() -> |
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fun |
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(Input) -> |
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(variable(?FUNCTION_NAME, take(8)))(Input) |
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end. |
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catalog_nz() -> |
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fun |
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(Input) -> |
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(variable(?FUNCTION_NAME, take(msmp_integer_fixed:decode(1))))(Input) |
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end. |
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ddl_xid() -> |
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fun |
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(Input) -> |
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(variable(?FUNCTION_NAME, msmp_integer_fixed:decode(8)))(Input) |
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end. |
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table_map_for_update() -> |
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fun |
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(Input) -> |
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(variable(?FUNCTION_NAME, msmp_integer_fixed:decode(8)))(Input) |
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end. |
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default_collation_for_utf8mb4() -> |
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fun |
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(Input) -> |
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(variable(?FUNCTION_NAME, msmp_integer_fixed:decode(2)))(Input) |
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end. |
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xid() -> |
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fun |
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(Input) -> |
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(variable(?FUNCTION_NAME, msmp_integer_fixed:decode(8)))(Input) |
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end. |
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unknown() -> |
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fun |
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(Input) -> |
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(kv(?FUNCTION_NAME, |
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into_map( |
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sequence( |
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[kv(type, msmp_integer_fixed:decode(1)), |
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kv(data, rest())]))))(Input) |
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end. |
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charset() -> |
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fun |
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(Input) -> |
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(variable( |
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?FUNCTION_NAME, |
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into_map( |
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sequence( |
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[kv(character_set_client, msmp_integer_fixed:decode(2)), |
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kv(collation_connection, msmp_integer_fixed:decode(2)), |
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kv(collation_server, msmp_integer_fixed:decode(2))]))))(Input) |
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end. |
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variable(Name, Parser) -> |
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fun |
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(Input) -> |
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(kv(Name, preceded(type(Name), Parser)))(Input) |
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end. |
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type(Type) -> |
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fun |
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(Input) -> |
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(tag(<<(cache(Type)):8>>))(Input) |
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end. |
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cache(Type) -> |
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maps:get(Type, persistent_term:get(?MODULE)). |
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on_load() -> |
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persistent_term:put( |
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?MODULE, |
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msmp_enum:priv_consult("status-variable-type.terms")). |