Jenkins and return code from windows batch

Question

I using a Jenkins (on a windows machine) job to compile some code for different targets via Ant. For doing so, I wrap the call to the ant target within a (windows) batch loo

Answer 1

I think your problem is because you read %ERROR_LEVEL% in a for loop.

I think you must use setlocal EnableDelayedExpansion

EnableDelayedExpansion : Expand variables at execution time rather than at parse time.

(ref is here)

Try to do something like this :

setlocal EnableDelayedExpansion

for %%t in (target1 target2 target3) do (
   ant -f build.xml build -DPARAM_TARGET=%%t
   echo ELVL: !ERRORLEVEL! 
   IF NOT !ERRORLEVEL! == 0 ( 
     echo ABORT: !ERRORLEVEL!
     exit /b !ERRORLEVEL!
   ) ELSE (
     echo PROCEED: !ERRORLEVEL!
   )
)

It don't explain why it runs on your computer... maybe because the EnableDelayedExpansion is already set in your dos windows.

EDIT

In batch-file :

• %var% will be expanded when the code is parsed (i.e. before execution !)
• !var! will be expanded when the code is executed

Since you are in a loop : %ERROR_LEVEL% is expanded once (i.e. just before first execution). But what you need is to re-expand ERROR_LEVEL for each iteration and that's the purpose of !ERROR_LEVEL! syntax.

Answer 2

@echo off
for %%t in (target1 target2 target3) do (
  ant -f build.xml build -DPARAM_TARGET=%%t
  echo ELVL: %ERRORLEVEL% 
  IF NOT %ERRORLEVEL% == 0 ( 
    echo ABORT: %ERRORLEVEL%
    exit /b %ERRORLEVEL%
  ) ELSE (
    echo PROCEED: %ERRORLEVEL%
  )
)

IIRC The issue is that ant.bat is a batch file, so you need to call it, e.g.

@ECHO OFF
FOR %%t IN (target1 target2 target3) DO (
  CALL ant.bat -f build.xml build -DPARAM_TARGET=%%t
  ECHO ELVL: %ERRORLEVEL% 
  IF NOT %ERRORLEVEL% == 0 ( 
    ECHO ABORT: %ERRORLEVEL%
    EXIT /b %ERRORLEVEL%
  ) ELSE (
    ECHO PROCEED: %ERRORLEVEL%
  )
)

Update

Actually there is a nicer way:

@ECHO OFF
FOR %%t IN (target1 target2 target3) DO (
  CALL ant.bat -f build.xml build -DPARAM_TARGET=%%t || EXIT /b 1
)