Motan user guide

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Update time: 2021-03-05

Firstly, you should bootstrap raincat-manager, please refer to how to bootstrap Txmanager for details. Then, please add following dependency in maven at your service, and add @TxTransaction annotation in your distributed transaction method.

       <dependency>
           <groupId>org.dromara</groupId>
           <artifactId>raincat-motan</artifactId>
           <version>2.0.0-RELEASE</version>
       </dependency>

Configure TxTransactionBootstrap by Spring XML

    <context:component-scan base-package="org.dromara.*"/>
    <aop:aspectj-autoproxy expose-proxy="true"/>
    <bean id="txTransactionBootstrap" class="org.dromara.raincat.core.bootstrap.TxTransactionBootstrap">
        <property name="txManagerUrl" value="http://localhost:8761"/>
        <property name="serializer" value="kryo"/>
        <property name="nettySerializer" value="kryo"/>
        <property name="compensation" value="true"/>
        <property name="compensationCacheType" value="db"/>
        <property name="txDbConfig">
            <bean class="org.dromara.raincat.common.config.TxDbConfig">
                <property name="url"
                          value="jdbc:mysql://192.168.1.98:3306/tx?useUnicode=true&amp;characterEncoding=utf8"/>
                <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
                <property name="username" value="root"/>
                <property name="password" value="123456"/>
            </bean>
        </property>
    </bean>

Configure TxTransactionBootstrap by Spring boot starter

  • Firstly, please add maven dependency raincat-spring-boot-starter-motan.

    <dependency>
 <groupId>org.dromara</groupId>
 <artifactId>raincat-spring-boot-starter-motan</artifactId>
 <version>2.0.0-RELEASE</version>
</dependency>
    • Secondly, please configure the application.yml like follows.

    org:
dromara:
 raincat:
   txManagerUrl: http://localhost:8761
   serializer: kroy
   nettySerializer: kroy
   compensation: true
   compensationCacheType : db
   txDbConfig :
          driverClassName  : com.mysql.jdbc.Driver
          url :  jdbc:mysql://192.168.1.98:3306/tx?useUnicode=true&amp;characterEncoding=utf8
          username : root
          password : 123456

  • txManagerUrl is the ip and port that you bootstrap txManager . Please add http:// at head.

  • serializer is the way of transaction log serialization.

  • nettySerializer is the serialization way of how to communicate with txManager. Please be caution that It should be consistent with the configuration in txManager.

  • compensation is the property whether compensation is required or not, the service will compensate itself in some cases.

  • compensationCacheType is the storage types of log, support Redis, Mongodb, Zookeeper, etc. For details, please refer to the config.

NOTICE: You need to open AOP when you want to use XML to configure.