Ant conditional failure upon executable failure

Question

I have the following ant target:

<target name="refactor-ids">
    <echo>Refactor IDs</echo>
    <exec executable="perl" dir="${basedir}">
        <arg value="script.pl" />
        <arg value="input.xml" />

    </exec> 
</target>

If the executable fails for any reason (script.pl doesnt exist, etc) the build will resolve as successful. How do I establish conditional build success upon the success of this executable?

score 18 · Accepted Answer · answered Oct 17 '11 at 22:02

18

just add failonerror="true" to the exec element

answered Oct 17 '11 at 22:02

yonix

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FailedDev · Answer 2 · 2011-10-17T21:54:12.007

10

I am assumng this is an ant script and not an xsl target.

You can use the attribute failifexecutionfails of the exec task :

http://ant.apache.org/manual/Tasks/exec.html

So if your execution fails for any reason your build will also fail. This is by default true. You can also check for the return code of your executable by using attributes :

failonerror

and

resultproperty

e.g.

<target name="refactor-ids">
    <echo>Refactor IDs</echo>
    <exec executable="perl" dir="${basedir}" failonerror="false" resultproperty="return.code">
        <arg value="script.pl" />
        <arg value="input.xml" />

    </exec> 
    <fail>
     <condition>
       <equals arg1="-1" arg2="${return.code}"/>
     </condition>
   </fail>
</target>

edited Oct 17 '11 at 21:54

answered Oct 17 '11 at 21:39

FailedDev

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Thanks for the tip, 'failonerror="true"' 'was' what I was looking for – JD. Oct 19 '11 at 14:49
4

You can simplify the fail condition with: `` – nikolay Jun 08 '12 at 00:24

score 2 · Answer 3 · edited May 23 '17 at 10:29

To fail immediately, use the failonerror attribute:

<exec dir="${basedir}" executable="sh" failonerror="true">
    <arg line="-c 'myscript'" />
</exec>

To perform some other action before failing, store the exit code in the resultproperty attribute. Typically, 0 indicates success, and 1 or higher indicates an error:

<exec dir="${basedir}" executable="sh" failonerror="false" resultproperty="exitStatusCode">
    <arg line="-c 'myscript'" />
</exec>

<!-- Do some other stuff before failing -->

<fail>
    <condition>
        <not>
            <equals arg1="0" arg2="${exitStatusCode}"/>
        </not>
    </condition>
</fail>

This also allows you to add a message indicating why the build failed by using the `message` parameter on the `fail` task. (See https://ant.apache.org/manual/Tasks/fail.html) — Michael Rush, Nov 21 '17 at 20:23

Ant conditional failure upon executable failure

3 Answers3