[英]Passing parameters from one action to another in Oozie
I have a following shell script: 我有以下shell脚本:
DATE= date +"%d%b%y" -d "-1 days"
How can I pass DATE
to a Java action? 如何将
DATE
传递给Java操作?
You can capture output from shell script and pass it to java action.In the shell script , echo the property like 'dateVariable=${DATE}' and add the capture-output element int the shell action. 您可以捕获shell脚本的输出并将其传递给java动作。在shell脚本中,回显诸如'dateVariable = $ {DATE}'之类的属性,然后将capture-output元素添加到shell动作中。 This will let you capture dateVariable from shell script.In the java action, You can pass the captured variable as parameter as ${wf:actionData('shellAction')['dateVariable']} where shellAction is the shell action name.
这将使您能够从shell脚本捕获dateVariable。在java动作中,您可以将捕获的变量作为参数传递为$ {wf:actionData('shellAction')['dateVariable']},其中shellAction是Shell动作名称。
Sample workflow :- 示例工作流程:-
<?xml version="1.0" encoding="UTF-8"?>
<workflow-app xmlns="uri:oozie:workflow:0.4"
name="Test workflow">
<start to="shellAction" />
<action name="shellAction">
<shell xmlns="uri:oozie:shell-action:0.1">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<exec>test_script.sh</exec> <file>${nameNode}/${workFlowLocation}/Scripts/test_script.sh#test_script.sh</file>
<capture-output />
</shell>
<ok to="JavaAction" />
<error to="fail" />
</action>
<action name="JavaAction">
<java>
<main-class>com.test.TestDriver</main-class>
<arg>${wf:actionData('shellAction')['dateVariable']}</arg>
<capture-output />
</java>
<ok to="end" />
<error to="fail" />
</action>
<kill name="fail">
<message>Job failed, error
message[${wf:errorMessage(wf:lastErrorNode())}]</message>
</kill>
<end name="end" />
</workflow-app>
In the shell script ,echo the value as below 在shell脚本中,回显以下值
echo "dateVariable=${dateValue}"
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