Oozie協調器 - 自定義EL功能

Question

我需要創建一個自定義EL功能並在uri-template（相當於YEAR，MONTH）中使用它。 有可能嗎？協調員這個區域的關鍵配置是oozie-site.xml？

Answer 1

屬性oozie.service.ELService.ext.functions.workflow是您必須將擴展EL功能的所有映射包括到關聯的類和方法中的屬性。多個映射條目以逗號分隔。

<property> 
<name>oozie.service.ELService.ext.functions.workflow</name> 
<value> 
yourELkey=fully_quallified_class_name#static_method_name 
</value> 
<description> 
EL functions declarations, separated by commas, format is 
[PREFIX:]NAME=CLASS#METHOD. This property is a convenience 
property to add extensions to the built in executors without 
having to include all the built in ones. 
</description> 
</property> 

有關如何打包和部署的更多信息，請參閱this。

編輯：由於您對類似於YEAR，MONTH的協調員的EL函數感興趣，您可以看看下面的屬性（記錄在oozie-default.xml中，您需要將它添加到oozie-site。因爲前者只是文檔） - oozie.service.ELService.functions.coord-job-submit-freq 和oozie.service.ELService.ext.functions.coord-job-submit-freq。

<property> 
     <name>oozie.service.ELService.functions.coord-job-submit-freq</name> 
     <value> 
      coord:days=org.apache.oozie.coord.CoordELFunctions#ph1_coord_days, 
      coord:months=org.apache.oozie.coord.CoordELFunctions#ph1_coord_months, 
      coord:hours=org.apache.oozie.coord.CoordELFunctions#ph1_coord_hours, 
      coord:minutes=org.apache.oozie.coord.CoordELFunctions#ph1_coord_minutes, 
      coord:endOfDays=org.apache.oozie.coord.CoordELFunctions#ph1_coord_endOfDays, 
      coord:endOfMonths=org.apache.oozie.coord.CoordELFunctions#ph1_coord_endOfMonths, 
      coord:conf=org.apache.oozie.coord.CoordELFunctions#coord_conf, 
      coord:user=org.apache.oozie.coord.CoordELFunctions#coord_user, 
      hadoop:conf=org.apache.oozie.action.hadoop.HadoopELFunctions#hadoop_conf 
     </value> 
     <description> 
      EL functions declarations, separated by commas, format is [PREFIX:]NAME=CLASS#METHOD. 
     </description> 
    </property> 

    <property> 
     <name>oozie.service.ELService.ext.functions.coord-job-submit-freq</name> 
     <value> 
     </value> 
     <description> 
      EL functions declarations, separated by commas, format is [PREFIX:]NAME=CLASS#METHOD. 
      This property is a convenience property to add extensions to the built in executors without having to 
      include all the built in ones. 
     </description> 
    </property>