我使用 WSO2 ESB 调度任务从外部系统获取数据,该任务每 5 秒调用一次我的代理服务.在我的代理服务中,我使用了属性名称startTime"和endTime",这意味着我想从startTime"获取数据到endTime".startTime"和endTime"应该在每次任务调用时增加 5 秒.但似乎 ESB 无法在每个任务调用之间存储这些属性(startTime 和 endTime).我尝试使用脚本编写startTime":
I used WSO2 ESB schedule task to fetch data from external system, the task call my proxy service every 5 seconds. In my proxy service, I used a property name "startTime" and "endTime", it means I want to fetch data from "startTime" to "endTime". "startTime" and "endTime" should be increase 5 seconds every task call. But it seems ESB cannot store these properties(startTime and endTime) between every task call. I try to use the script to write the "startTime" :
importPackage(Packages.apache.synapse.config); var id = mc.getProperty("id"); var res = "conf/data_task/"+id ; var startTimeInReg = mc.getProperty("_endTime"); mc.getConfiguration().getRegistry().updateResource(res+"/startTime", startTimeInReg.toString());得到它
<property expression="get-property('registry', fn:concat('conf/data_task/',get-property('id'),'/startTime'))" name="startTimeInReg" scope="default" type="STRING"/>我可以得到startTime",但它的值保持不变,我发现在 2 或 3 次调度任务调用之后(可能超过 15 秒),startTime 的值发生了变化.
I can get the "startTime", but it remain the same value , and I found that after 2 or 3 times schedule task call ( maybe elaps more than 15s ), the value of startTime change.
我认为这可能是由 ESB 缓存引起的,如何在调用 updateResource 方法后立即提交 startTime 值的更改.或者如何解决这个问题.
I think this maybe caused by ESB caching , how I can commit the changing of the startTime value immediately after updateResource method called. Or how can solve this issue.
推荐答案尝试将您的价值保存在治理注册表中:
Try to save your value in the governance registry :
mc.getConfiguration().getRegistry().newResource("gov:/trunk/test/MyCounter.txt",false); // create the resource the 1st time, does nothing the others mc.getConfiguration().getRegistry().updateResource("gov:/trunk/test/MyCounter.txt", startTimeInReg.toString());另一种解决方案,看看这个创建全局"计数器(在 ESB 重新启动时丢失)的示例:
An other solution, have a look at this sample that create a "global" counter (lost when the ESB is restarted) :
<script language="js"><![CDATA[ var curValue = mc.getEnvironment().getServerContextInformation().getProperty("MyCounter"); if (curValue == null) { curValue = 0; } else { curValue++; } mc.getEnvironment().getServerContextInformation().addProperty("MyCounter",curValue); mc.setProperty("MyCounter",curValue); ]]></script>更多推荐
如何在每个任务调用之间保留属性值
发布评论