获取 Jenkins 多分支管道中的分支列表

Question

The Blue Ocean interface to a Jenkins multibranch pipeline project shows several branches that were automatically created.

Is there a programmatic way to list the branches in the pipeline from code to be added to a Jenkinsfile?

This question asks about Jenkins Project branch information located inside the Jenkins application object model, which should be accessible via the Jenkins API or CLI.

I looked at all the variables that are available at http://<jenkins-home>/env-vars.html/ , but none of those variables seem to describe the information that I seek.

The list of project branches is clearly available to the Multibranch project. What syntax is required in order for the list of branches to be extracted into a script that runs in a Jenkinsfile ?

@bto's suggestions

I tried @bto 's suggestion, but I am getting an error indicating that an unexpected ( has been found.

Here is the relevant minimal Jenkinsfile that produces the new error:

node {
    // Clean workspace before doing anything
    deleteDir()

    try {
        stage ('Clone') {
            sh '''
                project = jenkins.model.Jenkins.instance.getItem(env.JOB_NAME.minus("/${env.JOB_BASE_NAME}"))
                    project.getItems().each { job ->
                        println job.getProperty(org.jenkinsci.plugins.workflow.multibranch.BranchJobProperty.class).getBranch().getName()
                    }
            '''
        }
    } catch (err) {
        currentBuild.result = 'FAILED'
        throw err
    }
}

And here is the log file containing the error:

 project = jenkins.model.Jenkins.instance.getItem(env.JOB_NAME.minus("/${env.JOB_BASE_NAME}")) project.getItems().each { job -> println job.getProperty(org.jenkinsci.plugins.workflow.multibranch.BranchJobProperty.class).getBranch().getName() }— Shell Script<1s
    [ne_GWS-43-getissueforcommit-M2X23QGNMETLDZWFK7IXVZQRCNSWYNTDFJZU54VP7DMIOD6Z4DGA] Running shell script
    /var/jenkins_home/workspace/ne_GWS-43-getissueforcommit-M2X23QGNMETLDZWFK7IXVZQRCNSWYNTDFJZU54VP7DMIOD6Z4DGA@tmp/durable-27d568b1/script.sh: line 3: syntax error: unexpected "("
    script returned exit code 2

Second Approach

Alternatively, I removed the enclosing sh """... """ block, per @bto 's comment, but this produced a different error about No Steps .

The confusion may be due to this being a 'scripted pipeline' and not a 'declarative pipeline'. See the difference between 'declarative' and scripted pipelines at this link .

Here is the alternative minimal Jenkinsfile .

node {
    // Clean workspace before doing anything
    deleteDir()

    try {
        stage ('Clone') {
            project = jenkins.model.Jenkins.instance.getItem(env.JOB_NAME.minus("/${env.JOB_BASE_NAME}"))
                project.getItems().each { job ->
                    println job.getProperty(org.jenkinsci.plugins.workflow.multibranch.BranchJobProperty.class).getBranch().getName()
                }
        }
    } catch (err) {
        currentBuild.result = 'FAILED'
        throw err
    }
}

And here is the log that results from the alternative approach:

No steps    This stage has no steps

    Branch event
    Obtained Jenkinsfile from 35adc9e931b45b1d1b3ace17c8fbddeeb5471ee1
    Running in Durability level: MAX_SURVIVABILITY
    [Pipeline] node
    Running on Jenkins in /var/jenkins_home/workspace/ne_GWS-43-getissueforcommit-M2X23QGNMETLDZWFK7IXVZQRCNSWYNTDFJZU54VP7DMIOD6Z4DGA
    [Pipeline] {
    [Pipeline] deleteDir
    [Pipeline] stage
    [Pipeline] { (Clone)
    [Pipeline] }
    [Pipeline] // stage
    [Pipeline] }
    [Pipeline] // node
    [Pipeline] End of Pipeline
    [Bitbucket] Notifying commit build result
    [Bitbucket] Build result notified
    an exception which occurred:
        in field groovy.lang.Closure.delegate
        in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@739b5db2
        in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.closures
        in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@1ca5a320
        in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@1ca5a320
    Caused: java.io.NotSerializableException: org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject
        at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:860)
        at org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65)
        at org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56)
        at org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50)
        at org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
        at java.util.LinkedHashMap.internalWriteEntries(LinkedHashMap.java:333)
        at java.util.HashMap.writeObject(HashMap.java:1363)
        at sun.reflect.GeneratedMethodAccessor48.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:273)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:976)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
        at org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65)
        at org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56)
        at org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50)
        at org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
        at com.cloudbees.groovy.cps.SerializableScript.writeObject(SerializableScript.java:26)
        at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:273)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:976)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
        at org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65)
        at org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56)
        at org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50)
        at org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
        at java.util.HashMap.internalWriteEntries(HashMap.java:1790)
        at java.util.HashMap.writeObject(HashMap.java:1363)
        at sun.reflect.GeneratedMethodAccessor48.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:273)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:976)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
        at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
        at org.jboss.marshalling.AbstractObjectOutput.writeObject(AbstractObjectOutput.java:58)
        at org.jboss.marshalling.AbstractMarshaller.writeObject(AbstractMarshaller.java:111)
        at org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.lambda$writeObject$0(RiverWriter.java:144)
        at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108)
        at org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.writeObject(RiverWriter.java:143)
        at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:477)
        at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:453)
        at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgramIfPossible(CpsThreadGroup.java:440)
        at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:367)
        at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$200(CpsThreadGroup.java:83)
        at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:244)
        at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:232)
        at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:64)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:131)
        at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
    Finished: FAILURE

Isolating The Error:

If I reduce @bto 's suggested code to the following three lines, I can then turn the error off by commenting out the second of the following three lines, and then turn the error back on again by uncommenting the second line. Therefore, the line of code that causes the Java.ip.NonSerializableException is project.getItems() , as follows:

project = jenkins.model.Jenkins.instance.getItem(env.JOB_NAME.minus("/${env.JOB_BASE_NAME}"))
//project.getItems()
project = null 

Note that I also needed to add project = null .

Problem Adding Exceptions:

When I try to deploy @bto 's suggested Jenkinsfile , the following error is shown in the Jenkins Blue Ocean interface:

But nothing happens when I click in any location on the error message.

Then I open a separate window to access the Jenkins tool for adding security exceptions, but nothing is queued up for automatic approval, and nothing allows me to manually enter the commands that need to be approved. What I get is the following screen:

Scrolling down to the bottom of the screen shown in the image does not reveal anything new.

Another attempt to whitelist:

Per @bto 's comment, I went to http://<jenkins-home>/script and entered the following, and then clicked the Run button:

def getBranchNames(project){
    project.getItems().each { job ->
        echo job.getProperty(org.jenkinsci.plugins.workflow.multibranch.BranchJobProperty.class).getBranch().getName()
    }
}
getBranchNames(jenkins.model.Jenkins.instance.getItem("my-project-name-string"))

But the following error was generated, and NOTHING was added to the approval queue at http://<jenkins-home>/scriptApproval :

groovy.lang.MissingMethodException: No signature of method: Script1.echo() is applicable for argument types: (java.lang.String) values: [GWS-43-getissueforcommit]
Possible solutions: each(groovy.lang.Closure), getAt(java.lang.String), wait(), run(), run(), every()
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:58)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:81)
    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$_getBranchNames_closure1.doCall(Script1.groovy:3)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
    at groovy.lang.Closure.call(Closure.java:414)
    at groovy.lang.Closure.call(Closure.java:430)
    at org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:2040)
    at org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:2025)
    at org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:2066)
    at org.codehaus.groovy.runtime.dgm$162.invoke(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoMetaMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:274)
    at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:56)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
    at Script1.getBranchNames(Script1.groovy:2)
    at Script1$getBranchNames.callCurrent(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:166)
    at Script1.run(Script1.groovy:6)
    at groovy.lang.GroovyShell.evaluate(GroovyShell.java:585)
    at groovy.lang.GroovyShell.evaluate(GroovyShell.java:623)
    at groovy.lang.GroovyShell.evaluate(GroovyShell.java:594)
    at hudson.util.RemotingDiagnostics$Script.call(RemotingDiagnostics.java:142)
    at hudson.util.RemotingDiagnostics$Script.call(RemotingDiagnostics.java:114)
    at hudson.remoting.LocalChannel.call(LocalChannel.java:45)
    at hudson.util.RemotingDiagnostics.executeGroovy(RemotingDiagnostics.java:111)
    at jenkins.model.Jenkins._doScript(Jenkins.java:4331)
    at jenkins.model.Jenkins.doScript(Jenkins.java:4302)
    at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)
    at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:343)
    at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:184)
    at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:117)
    at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:129)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:715)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:845)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
    at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1650)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
    at org.jenkinsci.plugins.ssegateway.Endpoint$SSEListenChannelFilter.doFilter(Endpoint.java:225)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at io.jenkins.blueocean.ResourceCacheControl.doFilter(ResourceCacheControl.java:134)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at io.jenkins.blueocean.auth.jwt.impl.JwtAuthenticationFilter.doFilter(JwtAuthenticationFilter.java:61)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:157)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
    at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:99)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
    at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
    at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90)
    at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
    at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
    at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
     at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
    at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.Server.handle(Server.java:564)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:317)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
    at org.eclipse.jetty.util.thread.Invocable.invokePreferred(Invocable.java:128)
    at org.eclipse.jetty.util.thread.Invocable$InvocableExecutor.invoke(Invocable.java:222)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:294)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:199)
    at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

What else must be changed in order to resolve this error?

Answer 1

You're going to need to whitelist* a lot of method signatures to get this to work, but you should be able to do something like:

@NonCPS
def getBranchNames(project){
    project.getItems().each { job ->
        echo job.getProperty(org.jenkinsci.plugins.workflow.multibranch.BranchJobProperty.class).getBranch().getName()
    }
}

node {
    // Clean workspace before doing anything
    deleteDir()
    stage ('Clone') {
        getBranchNames(jenkins.model.Jenkins.instance.getItem(env.JOB_NAME.minus("/${env.JOB_BASE_NAME}")))
        echo "done reading jobs"
    }
}

Note that this snippet excludes the try / catch error handling from the original request: By catching the whitelist exceptions, they aren't correctly added to the scriptApproval list. After it makes it through with no whitelist exceptions, you can add the error handling back in, as follows:

@NonCPS
def getBranchNames(project){
    project.getItems().each { job ->
        echo job.getProperty(org.jenkinsci.plugins.workflow.multibranch.BranchJobProperty.class).getBranch().getName()
    }
}

node {
    // Clean workspace before doing anything
    deleteDir()
    try {
        stage ('Clone') {
            getBranchNames(jenkins.model.Jenkins.instance.getItem(env.JOB_NAME.minus("/${env.JOB_BASE_NAME}")))
            echo "done reading jobs"
        }
    } catch (err) {
        error "BUILD FAILED: ${err}"
    }
}

* Whitelisting happens through http://<jenkins-home>/scriptApproval . I basically ran my test job, looked at the console output failure, clicked the approval link, and "approved" the item in question. I had to whitelist the following to get this to work:

• staticMethod jenkins.model.Jenkins getInstance '
  • Caveat! This one is flagged out as potentially introducing a security vulnerability (since it lets scripts get their hands on the Jenkins instance)
• method hudson.model.ItemGroup getItem java.lang.String
• method hudson.model.ItemGroup getItems
• method hudson.model.Job getProperty java.lang.Class
• method org.jenkinsci.plugins.workflow.multibranch.BranchJobProperty getBranch
• method jenkins.branch.Branch getName

Answer 2

You could use the available Jenkins API to get the list of branches/Jobs under any pipeline: Syntax: ${Base_Url}/api/json?tree=jobs[name]