如何在wso2 esb或wso2 dss中执行数据库事务回滚

时间:2016-05-13 07:14:09

标签: sql-server wso2 esb wso2dss

我使用Box_caring功能插入三个表,插入正确,但如果在插入表格之间出现一些错误,则不会滚动数据。

我正在寻找以下挑战的解决方案:拥有一组相关的表格。它们与主/外键关系相关,需要更新/插入相关表中的对象。在迭代器中介内插入/更新。当其中一个更新/插入失败时会发生什么?是否会回滚所有插入/更新的对象?

请提供任何想法或链接或代码段以使其有效。

注意:我使用的是wso2 esb-4.8.1,wso2 dss-3.2.2和MSSQL数据库

通过以下链接: http://charithaka.blogspot.in/2014/02/common-mistakes-to-avoid-in-wso2-esb-1.html

How we can ROLLBACK the Transaction in WSO2DSS or WSO2ESB

提前致谢

2 个答案:

答案 0 :(得分:0)

在这里,您必须实现分布式XA事务。您能否参考文章[1],它将指导您完成此任务。

[1] https://docs.wso2.com/display/ESB490/Sample+657%3A+Distributed+Transaction+Management

答案 1 :(得分:0)

使用box_carring功能时,必须在所有操作调用中保持相同的会话。否则,它将作为单独的调用进行求值,并且不会是原子的。这是一个示例synapse配置,可用于维护相同的会话。

<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="ESBService"
       transports="https http"
       startOnLoad="true"
       trace="disable">
   <description/>
   <target>
      <inSequence>
         <transaction action="new"/>
         <property name="id" expression="json-eval($.id)"/>
         <property name="userName" expression="json-eval($.userName)"/>
         <property name="firstName" expression="json-eval($.firstName)"/>
         <property name="lastName" expression="json-eval($.lastName)"/>
         <property name="address" expression="json-eval($.address)"/>
         <enrich>
            <source type="body" clone="true"/>
            <target type="property" property="FirstBody"/>
         </enrich>
         <property name="messageType" value="application/xml" scope="axis2"/>
         <header name="Action" value="urn:begin_boxcar"/>
         <payloadFactory media-type="xml">
            <format>
               <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
                                 xmlns:dat="http://ws.wso2.org/dataservice">
                  <soapenv:Header/>
                  <soapenv:Body>
                     <dat:begin_boxcar/>
                  </soapenv:Body>
               </soapenv:Envelope>
            </format>
            <args/>
         </payloadFactory>
         <call>
            <endpoint>
               <address uri="http://localhost:9764/services/testService.SOAP11Endpoint/"/>
            </endpoint>
         </call>
         <property name="setCookieHeader" expression="$trp:Set-Cookie"/>
         <property name="Cookie"
                   expression="get-property('setCookieHeader')"
                   scope="transport"/>
         <property name="OUT_ONLY" value="true"/>
         <payloadFactory media-type="xml">
            <format>
               <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
                                 xmlns:dat="http://ws.wso2.org/dataservice">
                  <soapenv:Header/>
                  <soapenv:Body>
                     <p:insert_employee xmlns:p="http://ws.wso2.org/dataservice">
                        <xs:UserId xmlns:xs="http://ws.wso2.org/dataservice">$1</xs:UserId>
                        <xs:userName xmlns:xs="http://ws.wso2.org/dataservice">$2</xs:userName>
                        <xs:firstName xmlns:xs="http://ws.wso2.org/dataservice">$3</xs:firstName>
                        <xs:lastName xmlns:xs="http://ws.wso2.org/dataservice">$4</xs:lastName>
                     </p:insert_employee>
                  </soapenv:Body>
               </soapenv:Envelope>
            </format>
            <args>
               <arg evaluator="xml" expression="get-property('id')"/>
               <arg evaluator="xml" expression="get-property('userName')"/>
               <arg evaluator="xml" expression="get-property('firstName')"/>
               <arg evaluator="xml" expression="get-property('lastName')"/>
            </args>
         </payloadFactory>
         <property name="Content-Encoding" scope="transport" action="remove"/>
         <property name="Cookie"
                   expression="get-property('setCookieHeader')"
                   scope="transport"/>
         <call>
            <endpoint>
               <address uri="http://localhost:9764/services/testService.SOAP11Endpoint/"/>
            </endpoint>
         </call>
         <payloadFactory media-type="xml">
            <format>
               <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
                                 xmlns:dat="http://ws.wso2.org/dataservice">
                  <soapenv:Header/>
                  <soapenv:Body>
                     <dat:end_boxcar/>
                  </soapenv:Body>
               </soapenv:Envelope>
            </format>
            <args/>
         </payloadFactory>
         <property name="Content-Encoding" scope="transport" action="remove"/>
         <property name="Cookie"
                   expression="get-property('setCookieHeader')"
                   scope="transport"/>
         <call>
            <endpoint>
               <address uri="http://localhost:9764/services/testService.SOAP11Endpoint/"/>
            </endpoint>
         </call>
         <respond/>
      </inSequence>
      <faultSequence>
         <log>
            <property name="END" value="****ROLLBACK****"/>
         </log>
         <transaction action="rollback"/>
         <respond/>
      </faultSequence>
   </target>
</proxy>

但是,您可以使用request_box功能,无需在整个操作过程中维护会话。

由于