001// --------------------------------------------------------------------------------
002// Copyright 2002-2026 Echo Three, LLC
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//     http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015// --------------------------------------------------------------------------------
016
017package com.echothree.util.server.persistence.mutex;
018
019import javax.enterprise.context.Dependent;
020import javax.enterprise.inject.Produces;
021
022@Dependent
023public class DatabaseMutexProducer {
024
025    // CDI producer parameters are injection points and require the flavor qualifier.
026    @SuppressWarnings("UnnecessaryQualifier")
027    @Produces
028    public DatabaseMutex produceMutex(final DatabaseMutexFlavor.Flavor flavor,
029            @DatabaseMutexFlavor(DatabaseMutexFlavor.Flavor.MYSQL) final DatabaseMutex mySqlMutex,
030            @DatabaseMutexFlavor(DatabaseMutexFlavor.Flavor.POSTGRES) final DatabaseMutex postgresMutex) {
031        return switch(flavor) {
032            case MYSQL -> mySqlMutex;
033            case POSTGRES -> postgresMutex;
034        };
035    }
036
037}