groovy syntax error while trying concurrent builds using buildflow plugin

[Arjun RoyChaudhuri]

I'm new to jenkins and groovy, can any one please tell me what is wrong in my syntax?

parallel (1..5).collect { index ->
    { -> build("samplejob", param: params["inputVal" + index]) }
}


I'm trying to run "samplejob" concurrently using build flow plugin, but something is wrong with my syntax and it's giving me following error

Enter code here...ERROR: Failed to run DSL Script
org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object '1' with class 'java.lang.Integer' to class 'groovy.lang.Closure'
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnSAM(DefaultTypeTransformation.java:405)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnNumber(DefaultTypeTransformation.java:319)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType(DefaultTypeTransformation.java:232)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.asArray(DefaultTypeTransformation.java:423)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType(DefaultTypeTransformation.java:214)
        at org.codehaus.groovy.runtime.DefaultGroovyMethods.asType(DefaultGroovyMethods.java:15538)
        at org.codehaus.groovy.runtime.DefaultGroovyMethods.asType(DefaultGroovyMethods.java:10642)
        at org.codehaus.groovy.runtime.dgm$52.doMethodInvoke(Unknown Source)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1215)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
        at org.codehaus.groovy.runtime.InvokerHelper.invokePojoMethod(InvokerHelper.java:911)
        at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:902)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:168)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.asType(ScriptBytecodeAdapter.java:591)
        at com.cloudbees.plugins.flow.FlowDelegate.parallel(FlowDSL.groovy:399)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1215)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:812)
        at com.cloudbees.plugins.flow.FlowDelegate.invokeMethod(FlowDSL.groovy)
        at hudson.util.spring.ClosureScript.invokeMethod(ClosureScript.java:83)
        at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:75)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:166)
        at Script1.run(Script1.groovy:1)
        at Script1$run.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
        at Script1$run.call(Unknown Source)
        at com.cloudbees.plugins.flow.FlowDSL.executeFlowScript(FlowDSL.groovy:84)
        at com.cloudbees.plugins.flow.FlowRun$FlyweightTaskRunnerImpl.run(FlowRun.java:219)
        at hudson.model.Run.execute(Run.java:1741)
        at com.cloudbees.plugins.flow.FlowRun.run(FlowRun.java:155)
        at hudson.model.ResourceController.execute(ResourceController.java:98)
        at hudson.model.Executor.run(Executor.java:410)
FATAL: Cannot cast object '1' with class 'java.lang.Integer' to class 'groovy.lang.Closure'
org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object '1' with class 'java.lang.Integer' to class 'groovy.lang.Closure'
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnSAM(DefaultTypeTransformation.java:405)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnNumber(DefaultTypeTransformation.java:319)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType(DefaultTypeTransformation.java:232)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.asArray(DefaultTypeTransformation.java:423)
        at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType(DefaultTypeTransformation.java:214)
        at org.codehaus.groovy.runtime.DefaultGroovyMethods.asType(DefaultGroovyMethods.java:15538)
        at org.codehaus.groovy.runtime.DefaultGroovyMethods.asType(DefaultGroovyMethods.java:10642)
        at org.codehaus.groovy.runtime.dgm$52.doMethodInvoke(Unknown Source)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1215)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
        at org.codehaus.groovy.runtime.InvokerHelper.invokePojoMethod(InvokerHelper.java:911)
        at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:902)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:168)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.asType(ScriptBytecodeAdapter.java:591)
        at com.cloudbees.plugins.flow.FlowDelegate.parallel(FlowDSL.groovy:399)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1215)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:812)
        at com.cloudbees.plugins.flow.FlowDelegate.invokeMethod(FlowDSL.groovy)
        at hudson.util.spring.ClosureScript.invokeMethod(ClosureScript.java:83)
        at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:75)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:166)
        at Script1.run(Script1.groovy:1)
        at Script1$run.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
        at Script1$run.call(Unknown Source)
        at com.cloudbees.plugins.flow.FlowDSL.executeFlowScript(FlowDSL.groovy:84)
        at com.cloudbees.plugins.flow.FlowRun$FlyweightTaskRunnerImpl.run(FlowRun.java:219)
        at hudson.model.Run.execute(Run.java:1741)
        at com.cloudbees.plugins.flow.FlowRun.run(FlowRun.java:155)
        at hudson.model.ResourceController.execute(ResourceController.java:98)
        at hudson.model.Executor.run(Executor.java:410)
Finished: FAILURE

[Victor Martinez]

do you really need that extra closure " { -> build( " ?

[Baptiste Mathus]

Hello,

Beware, build flow plugin has been abandoned by his creator. And the last maintainer also stopped doing it.

You should look at the Pipeline plugin.
Buildflow is most likely to not get any fixes or evolution in the future, so if you're just starting you presumably don't want to start with it.

Cheers

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