SystemCommandTasklet usage

[Kbules]

Hi ,

I have requirement to encrypt file using third party tool/commands.

I want to use SystemCommandTasklet to execute third party commands like pgp -v

Job Configuration:

<bean id="commandLine" class="org.springframework.batch.core.step.tasklet .SystemCommandTasklet">
<property name="command" value="pgp -v" />
<property name="timeout" value="5000" />

</bean>

Any suggestions on this approach are highly appreciated.

Thanks in advance.

[Kbules]

Can someone give me an idea(s) on this?

[Shriblue]

Your approach looks correct. Do note that these commands usually won't return the error code properly, so you need to figure out a way to check if the job ran successfully.

I would add another property to the tasklet,

<beans:property name="systemProcessExitCodeMapper">
    <beans:bean class="org.springframework.batch.core.step.tasklet.SimpleSystemProcessExitCodeMapper"/>
</beans:property>

[Kbules]

Thank you for your replay.

I tried to execute system command ex: pgp or dir in windows environment. but it is throwing following error.

----------
Encountered an error executing the step
java.util.concurrent.ExecutionException: java.io.IOException: Cannot run program "dir": CreateProcess error=2, The system cannot find the file specified
at java.util.concurrent.FutureTask$Sync.innerGet(Futu reTask.java:222)
at java.util.concurrent.FutureTask.get(FutureTask.jav a:83)
at org.springframework.batch.core.step.tasklet.System CommandTasklet.execute(SystemCommandTasklet.java:1 02)
at org.springframework.batch.core.step.tasklet.Taskle tStep$2.doInChunkContext(TaskletStep.java:268)
at org.springframework.batch.core.scope.context.StepC ontextRepeatCallback.doInIteration(StepContextRepe atCallback.java:76)
at org.springframework.batch.repeat.support.RepeatTem plate.getNextResult(RepeatTemplate.java:367)
at org.springframework.batch.repeat.support.RepeatTem plate.executeInternal(RepeatTemplate.java:215)
at org.springframework.batch.repeat.support.RepeatTem plate.iterate(RepeatTemplate.java:143)
at org.springframework.batch.core.step.tasklet.Taskle tStep.doExecute(TaskletStep.java:242)
at org.springframework.batch.core.step.AbstractStep.e xecute(AbstractStep.java:198)
at org.springframework.batch.core.job.AbstractJob.han dleStep(AbstractJob.java:348)
at org.springframework.batch.core.job.flow.FlowJob.ac cess$0(FlowJob.java:1)
at org.springframework.batch.core.job.flow.FlowJob$Jo bFlowExecutor.executeStep(FlowJob.java:135)
at org.springframework.batch.core.job.flow.support.st ate.StepState.handle(StepState.java:60)
at org.springframework.batch.core.job.flow.support.Si mpleFlow.resume(SimpleFlow.java:144)
at org.springframework.batch.core.job.flow.support.Si mpleFlow.start(SimpleFlow.java:124)
at org.springframework.batch.core.job.flow.FlowJob.do Execute(FlowJob.java:103)
at org.springframework.batch.core.job.AbstractJob.exe cute(AbstractJob.java:250)
at org.springframework.batch.core.launch.support.Simp leJobLauncher$1.run(SimpleJobLauncher.java:110)
at org.springframework.core.task.SyncTaskExecutor.exe cute(SyncTaskExecutor.java:49)
at org.springframework.batch.core.launch.support.Simp leJobLauncher.run(SimpleJobLauncher.java:105)
at com.emc.eis.concur.ftp.ResourceManagementTest.test LaunchJob(ResourceManagementTest.java:34)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.test.context.junit4.SpringTest Method.invoke(SpringTestMethod.java:160)
at org.springframework.test.context.junit4.SpringMeth odRoadie.runTestMethod(SpringMethodRoadie.java:233 )
at org.springframework.test.context.junit4.SpringMeth odRoadie$RunBeforesThenTestThenAfters.run(SpringMe thodRoadie.java:333)
at org.springframework.test.context.junit4.SpringMeth odRoadie.runWithRepetitions(SpringMethodRoadie.jav a:217)
at org.springframework.test.context.junit4.SpringMeth odRoadie.runTest(SpringMethodRoadie.java:197)
at org.springframework.test.context.junit4.SpringMeth odRoadie.run(SpringMethodRoadie.java:143)
at org.springframework.test.context.junit4.SpringJUni t4ClassRunner.invokeTestMethod(SpringJUnit4ClassRu nner.java:160)
at org.junit.internal.runners.JUnit4ClassRunner.runMe thods(JUnit4ClassRunner.java:51)
at org.junit.internal.runners.JUnit4ClassRunner$1.run (JUnit4ClassRunner.java:44)
at org.junit.internal.runners.ClassRoadie.runUnprotec ted(ClassRoadie.java:27)
at org.junit.internal.runners.ClassRoadie.runProtecte d(ClassRoadie.java:37)
at org.junit.internal.runners.JUnit4ClassRunner.run(J Unit4ClassRunner.java:42)
at org.springframework.test.context.junit4.SpringJUni t4ClassRunner.run(SpringJUnit4ClassRunner.java:97)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestR eference.run(JUnit4TestReference.java:46)
at org.eclipse.jdt.internal.junit.runner.TestExecutio n.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.main(RemoteTestRunner.java:197)
Caused by: java.io.IOException: Cannot run program "dir": CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(ProcessBuilder.java :459)
at java.lang.Runtime.exec(Runtime.java:593)
at java.lang.Runtime.exec(Runtime.java:431)
at org.springframework.batch.core.step.tasklet.System CommandTasklet$1.call(SystemCommandTasklet.java:89 )
at org.springframework.batch.core.step.tasklet.System CommandTasklet$1.call(SystemCommandTasklet.java:1)
at java.util.concurrent.FutureTask$Sync.innerRun(Futu reTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.jav a:138)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)
at java.lang.ProcessImpl.start(ProcessImpl.java:30)
at java.lang.ProcessBuilder.start(ProcessBuilder.java :452)
... 7 more
----------

do i need set any path to this issue. Please tell me what needs to be done in window/linux environment.

thanks in advance.

[Shriblue]

Yes, you need to specify the path of the file, it follows the Spring EL for specifying various paths.

[Kbules]

I tried to give fill path for the command property like below.

<property name="command" value="<<full path>>" /> for the bean SystemCommandTasklet.

is this correct way. Can you direct me how to do in best way with respective tool path changes.

Thanks in advance.