分布式事务

-- for AT mode you must to init this sql for you business database. the seata server not need it.
CREATE TABLE IF NOT EXISTS `undo_log`
(
    `branch_id` BIGINT(20) NOT NULL COMMENT 'branch transaction id',
    `xid` VARCHAR(100) NOT NULL COMMENT 'global transaction id',
    `context` VARCHAR(128) NOT NULL COMMENT 'undo_log context, such as serialization',
    `rollback_info` LONGBLOB NOT NULL COMMENT 'rollback info',
    `log_status` INT(11) NOT NULL COMMENT '0: normal status,1: defense status',
    `log_created` DATETIME(6) NOT NULL COMMENT 'create datetime',
    `log_modified` DATETIME(6) NOT NULL COMMENT 'modify datetime',
    UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`)
) ENGINE = InnoDB
  AUTO_INCREMENT = 1
  DEFAULT CHARSET = utf8 COMMENT = 'AT transaction mode undo table';

-- -------------------------------- The script used when storeMode is 'db' ------- -------------------------
-- the table to store GlobalSession data
CREATE TABLE IF NOT EXISTS `global_table`
(
    `xid` VARCHAR(128) NOT NULL,
    `transaction_id` BIGINT,
    `status` TINYINT NOT NULL,
    `application_id` VARCHAR(32),
    `transaction_service_group` VARCHAR(32),
    `transaction_name` VARCHAR(128),
    `timeout` INT,
    `begin_time` BIGINT,
    `application_data` VARCHAR(2000),
    `gmt_create` DATETIME,
    `gmt_modified` DATETIME,
    PRIMARY KEY (`xid`),
    KEY `idx_gmt_modified_status` (`gmt_modified`, `status`),
    KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

-- the table to store BranchSession data
CREATE TABLE IF NOT EXISTS `branch_table`
(
    `branch_id` BIGINT NOT NULL,
    `xid` VARCHAR(128) NOT NULL,
    `transaction_id` BIGINT,
    `resource_group_id` VARCHAR(32),
    `resource_id` VARCHAR(256),
    `branch_type` VARCHAR(8),
    `status` TINYINT,
    `client_id` VARCHAR(64),
    `application_data` VARCHAR(2000),
    `gmt_create` DATETIME(6),
    `gmt_modified` DATETIME(6),
    PRIMARY KEY (`branch_id`),
    KEY `idx_xid` (`xid`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

-- the table to store lock data
CREATE TABLE IF NOT EXISTS `lock_table`
(
    `row_key` VARCHAR(128) NOT NULL,
    `xid` VARCHAR(96),
    `transaction_id` BIGINT,
    `branch_id` BIGINT NOT NULL,
    `resource_id` VARCHAR(256),
    `table_name` VARCHAR(32),
    `pk` VARCHAR(36),
    `gmt_create` DATETIME,
    `gmt_modified` DATETIME,
    PRIMARY KEY (`row_key`),
    KEY `idx_branch_id` (`branch_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

            <dependency>
                <groupId>io.seata</groupId>
                <artifactId>seata-spring-boot-starter</artifactId>
                <version>1.5.2</version>
            </dependency>

            <dependency>
                <groupId>io.seata</groupId>
                <artifactId>seata-all</artifactId>
                <version>1.5.2</version>
            </dependency>

seata:
  enabled: true
  application-id: applicationName
  tx-service-group: my_test_tx_group
  enable-auto-data-source-proxy: true #Only AT and XA modes need to be true, and the data source will be automatically proxied after opening
  data-source-proxy-mode: AT #Optional AT&XA
  config:
    type: nacos
    nacos:
      #namespace: If the configuration is created in a non-default namespace, please fill in the id of the namespace here
      serverAddr: 127.0.0.1:8848
      group: SEATA_GROUP
      username: "nacos"
      password: "nacos"
      data-id: seata.properties
  registry:
    type: nacos
    nacos:
      application: seata-server
      server-addr: 127.0.0.1:8848
      group: SEATA_GROUP
      #namespace: If the configuration is created in a non-default namespace, please fill in the id of the namespace here
      username: "nacos"
      password: "nacos"

registry {
  # file, nacos, eureka, redis, zk, consul, etcd3, sofa, custom
  type = "nacos"
  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    group = "SEATA_GROUP"
    namespace = ""
    username = ""
    password = ""
    ##if use MSE Nacos with auth, mutex with username/password attribute
    #accessKey = ""
    #secretKey = ""
    ##if use Nacos naming meta-data for SLB service registry, specify nacos address pattern rules here
    #slbPattern = ""
  }
}

config {
  # file, nacos, apollo, zk, consul, etcd3, springCloudConfig, custom
  type = "nacos"
  nacos {
    serverAddr = "127.0.0.1:8848"
    namespace = ""
    group = "SEATA_GROUP"
    username = ""
    password = ""
    ##if use MSE Nacos with auth, mutex with username/password attribute
    #accessKey = ""
    #secretKey = ""
    dataId = "seata.properties"
  }
}

#Only used by client
#The transaction group is called my_test_tx_group and the corresponding seata-server cluster is default
service.vgroupMapping.my_test_tx_group=default
#The following are only used by server
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true
store.db.user=username
store.db.password=password
store.db.minConn=5
store.db.maxConn=30
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.queryLimit=100
store.db.lockTable=lock_table
store.db.maxWait=5000

server:
  port: 7091

spring:
  application:
    name: seata-server

record:
  config: classpath:logback-spring.xml
  file:
    path: ${user.home}/logs/seata

console:
  user:
    username: seata
    password: seata

seata:
  config:
    # support: nacos, consul, apollo, zk, etcd3
    type: nacos
    nacos:
      server-addr: 127.0.0.1:8848
      #namespace: If the configuration is created in a non-default namespace, please fill in the id of the namespace here
      group: SEATA_GROUP
      username:
      password:
      ##if use MSE Nacos with auth, mutex with username/password attribute
      #access-key: ""
      #secret-key: ""
      data-id: seata.properties
  registry:
    # support: nacos, eureka, redis, zk, consul, etcd3, sofa
    type: nacos
    nacos:
      application: seata-server
      server-addr: 127.0.0.1:8848
      group: SEATA_GROUP
      namespace:
      cluster: default
      #namespace: If the configuration is created in a non-default namespace, please fill in the id of the namespace here
      password:
      ##if use MSE Nacos with auth, mutex with username/password attribute
      #access-key: ""
      #secret-key: ""
# server:
# service-port: 8091 #If not configured, the default is '${server.port} + 1000'
  security:
    secretKey: SeataSecretKey0c382ef121d778043159209298fd40bf3850a017
    tokenValidityInMilliseconds: 1800000
    ignore:
      urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*. png, /**/*.ico, /console-fe/public/**, /api/v1/auth/login

@GetMapping(value = "testCommit")
@GlobalTransactional
public Object testCommit(@RequestParam(name = "id",defaultValue = "1") Integer id,
    @RequestParam(name = "sum", defaultValue = "1") Integer sum) {
    Boolean ok = productService. reduceStock(id, sum);
    if (ok) {
        LocalDateTime now = LocalDateTime.now();
        Orders orders = new Orders();
        orders.setCreateTime(now);
        orders.setProductId(id);
        orders. setReplaceTime(now);
        orders. setSum(sum);
        orderService. save(orders);
        return "ok";
    } else {
        return "fail";
    }
}

@Primary
@Bean("dataSource")
public DataSource dataSource(DataSource druidDataSource) {
    //AT agent choose one of the two
    return new DataSourceProxy(druidDataSource);
    //XA Proxy
    return new DataSourceProxyXA(druidDataSource)
}

       @Bean
       public GlobalTransactionScanner globalTransactionScanner() {
           return new GlobalTransactionScanner("application name", "my_test_tx_group");
       }

seata:
  enable-auto-data-source-proxy: false

/**
 * Define two-phase commit name = the bean name of the tcc, globally unique commitMethod = commit is the two-phase confirmation method rollbackMethod = rollback is the two-phase cancellation method
 * useTCCFence=true is to enable anti-hanging
 * BusinessActionContextParameter annotation to pass parameters to the second stage
 *
 * @param params - input parameters
 * @return String
 */
@TwoPhaseBusinessAction(name = "beanName", commitMethod = "commit", rollbackMethod = "rollback", useTCCFence = true)
public void insert(@BusinessActionContextParameter(paramName = "params") Map<String, String> params) {
    logger.info("You can reserve resources here, or use the characteristics of tcc to mix with AT. In the second stage, use the messages stored here in the first stage and send them out through the second stage, such as redis, mq and other operations");
}

/**
 * The confirmation method can be named otherwise, but it must be consistent with the commitMethod. The context can pass the parameters of the try method
 *
 * @param context context
 * @return boolean
 */
public void commit(BusinessActionContext context) {
    logger.info("Reserved resources are actually processed, or send mq messages and redis storage");
}

/**
 * Two-stage cancellation method
 *
 * @param context context
 * @return boolean
 */
public void rollback(BusinessActionContext context) {
    logger.info("Release reserved resources, or clear the message cache sent when the first phase is ready to be submitted by the second phase");
}

cd bin

sh seata-server.sh

cd bin
./seata-server.bat