/*
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* Copyright 1999-2019 Seata.io Group.
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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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*/
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package io.seata.server.lock;
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import io.seata.common.loader.EnhancedServiceLoader;
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import io.seata.config.Configuration;
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import io.seata.config.ConfigurationFactory;
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import io.seata.server.store.StoreConfig;
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import io.seata.server.store.StoreConfig.LockMode;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* The type Lock manager factory.
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*
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* @author sharajava
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*/
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public class LockerManagerFactory {
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private static final Logger LOGGER = LoggerFactory.getLogger(LockerManagerFactory.class);
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private static final Configuration CONFIG = ConfigurationFactory.getInstance();
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/**
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* the lock manager
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*/
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private static volatile LockManager LOCK_MANAGER;
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/**
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* Get lock manager.
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*
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* @return the lock manager
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*/
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public static LockManager getLockManager() {
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if (LOCK_MANAGER == null) {
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init();
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}
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return LOCK_MANAGER;
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}
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public static void init() {
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init(null);
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}
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public static void init(LockMode lockMode) {
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if (LOCK_MANAGER == null) {
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synchronized (LockerManagerFactory.class) {
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if (LOCK_MANAGER == null) {
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if (null == lockMode) {
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lockMode = StoreConfig.getLockMode();
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}
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LOGGER.info("use lock store mode: {}", lockMode.getName());
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//if not exist the lock mode, throw exception
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if (null != StoreConfig.StoreMode.get(lockMode.name())) {
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LOCK_MANAGER = EnhancedServiceLoader.load(LockManager.class, lockMode.getName());
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}
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}
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}
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}
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}
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}
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