wangchunxiang
c2453d6434
- 添加 Babel 配置文件支持 ES6+ 语法转换 - 添加 ESLint 忽略规则和配置文件 - 添加 Git 忽略规则文件 - 添加 Travis CI 配置文件 - 添加 1.4.2 版本变更日志文件 - 添加 Helm 图表辅助模板文件 - 添加 Helm 忽略规则文件
58 lines
2.1 KiB
Java
58 lines
2.1 KiB
Java
/*
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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.rm;
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import io.seata.core.context.GlobalLockConfigHolder;
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import io.seata.core.context.RootContext;
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import io.seata.core.model.GlobalLockConfig;
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/**
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* executor template for local transaction which need global lock
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* @author selfishlover
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*/
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public class GlobalLockTemplate {
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public Object execute(GlobalLockExecutor executor) throws Throwable {
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boolean alreadyInGlobalLock = RootContext.requireGlobalLock();
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if (!alreadyInGlobalLock) {
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RootContext.bindGlobalLockFlag();
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}
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// set my config to config holder so that it can be access in further execution
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// for example, LockRetryController can access it with config holder
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GlobalLockConfig myConfig = executor.getGlobalLockConfig();
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GlobalLockConfig previousConfig = GlobalLockConfigHolder.setAndReturnPrevious(myConfig);
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try {
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return executor.execute();
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} finally {
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// only unbind when this is the root caller.
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// otherwise, the outer caller would lose global lock flag
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if (!alreadyInGlobalLock) {
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RootContext.unbindGlobalLockFlag();
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}
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// if previous config is not null, we need to set it back
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// so that the outer logic can still use their config
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if (previousConfig != null) {
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GlobalLockConfigHolder.setAndReturnPrevious(previousConfig);
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} else {
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GlobalLockConfigHolder.remove();
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}
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}
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}
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}
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