Re: Jenkins2 pipeline - Global methods in shared-library fails when invoked

[David Karr]

On Thursday, February 2, 2017 at 2:13:36 PM UTC-8, Daniel Beck wrote:
>
>
> > On 02.02.2017, at 17:27, David Karr  
> wrote: 
> > 
> > Wow, and the documentation page doesn't even MENTION this fact?  I'm 
> reading it now, and there's that underscore, completely without any 
> statement like YES, THIS REALLY NEEDS TO BE HERE.  Seriously? 
>
> Could you clarify what you're referring to? Tor Christian quoted the 
> documentation which states… 
>
> > For Shared Libraries which only define Global Variables (vars/), or a 
> Jenkinsfile which only needs a Global Variable, the annotation pattern 
> @Library('my-shared-library') _ may be useful for keeping code concise. In 
> essence, instead of annotating an unnecessary import statement, the symbol 
> _ is annotated. 
>
>
>
I perhaps phrased that stronger than it should have. However, the example 
that comes before this text uses the underscore character without 
mentioning it.  It's only this note that comes a few lines later on when 
this is mentioned. When I first wrote that reply (I did try to delete it), 
I saw the example without any explanation, and didn't notice the 
explanation until later.

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Re: Jenkins2 pipeline - Global methods in shared-library fails when invoked

[Daniel Beck]

> On 02.02.2017, at 17:27, David Karr  wrote:
> 
> Wow, and the documentation page doesn't even MENTION this fact?  I'm reading 
> it now, and there's that underscore, completely without any statement like 
> YES, THIS REALLY NEEDS TO BE HERE.  Seriously?

Could you clarify what you're referring to? Tor Christian quoted the 
documentation which states…

> For Shared Libraries which only define Global Variables (vars/), or a 
> Jenkinsfile which only needs a Global Variable, the annotation pattern 
> @Library('my-shared-library') _ may be useful for keeping code concise. In 
> essence, instead of annotating an unnecessary import statement, the symbol _ 
> is annotated.


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Re: Jenkins2 pipeline - Global methods in shared-library fails when invoked

[David Karr]

On Thursday, February 2, 2017 at 3:30:05 AM UTC-8, R Tyler Croy wrote:
>
> (replies inline) 
>
> On Thu, 02 Feb 2017, Tor Christian Solev?gseide wrote: 
>
> > I was finally able to solve this myself. The problem was how I 
> referenced 
> > the shared library. Apparently, I need to add the underscore character 
> to 
> > the end if my @Library annotation like this: 
> > @Library('customized-portal-lib') _ 
> > 
> > Also, I must make sure to not import my global *acme *variable. 
> > 
> > This is documented 
> > in https://jenkins.io/doc/book/pipeline/shared-libraries/ for those who 
> > take their time to fine read it (which I didn't at first): 
>
>
> FWIW, the underscore character is kind of a cute little hack. @Library is 
> an 
> annotation so it must annotate *something*, annotating the underscore is 
> kind 
> of like annotating a throwaway unused character. Technically you're able 
> to 
> annotate other statements, as the section in the handbook describes 
>

Wow, and the documentation page doesn't even MENTION this fact?  I'm 
reading it now, and there's that underscore, completely without any 
statement like YES, THIS REALLY NEEDS TO BE HERE.  Seriously?
 

>
>
> - R. Tyler Croy 
>
> -- 
>  Code:  
>   Chatter:  
>  xmpp: rty...@jabber.org  
>
>   % gpg --keyserver keys.gnupg.net --recv-key 1426C7DC3F51E16F 
> -- 
>

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Re: Jenkins2 pipeline - Global methods in shared-library fails when invoked

[R. Tyler Croy]

(replies inline)

On Thu, 02 Feb 2017, Tor Christian Solev?gseide wrote:

> I was finally able to solve this myself. The problem was how I referenced 
> the shared library. Apparently, I need to add the underscore character to 
> the end if my @Library annotation like this:
> @Library('customized-portal-lib') _
> 
> Also, I must make sure to not import my global *acme *variable.
> 
> This is documented 
> in https://jenkins.io/doc/book/pipeline/shared-libraries/ for those who 
> take their time to fine read it (which I didn't at first):


FWIW, the underscore character is kind of a cute little hack. @Library is an
annotation so it must annotate *something*, annotating the underscore is kind
of like annotating a throwaway unused character. Technically you're able to
annotate other statements, as the section in the handbook describes


- R. Tyler Croy

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 xmpp: rty...@jabber.org

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Re: Jenkins2 pipeline - Global methods in shared-library fails when invoked

[Tor Christian Solevågseide]

I was finally able to solve this myself. The problem was how I referenced 
the shared library. Apparently, I need to add the underscore character to 
the end if my @Library annotation like this:
@Library('customized-portal-lib') _

Also, I must make sure to not import my global *acme *variable.

This is documented 
in https://jenkins.io/doc/book/pipeline/shared-libraries/ for those who 
take their time to fine read it (which I didn't at first):

> For Shared Libraries which only define Global Variables (vars/), or a 
> Jenkinsfile which only needs a Global Variable, the annotation 
>  pattern 
> @Library('my-shared-library') 
> _ may be useful for keeping code concise. In essence, instead of 
> annotating an unnecessary import statement, the symbol _ is annotated.
>
 

> It is not recommended to import a global variable/function, since this 
> will force the compiler to interpret fields and methods as static even if 
> they were intended to be instance. The Groovy compiler in this case can 
> produce confusing error messages.


/TC


fredag 20. januar 2017 12.24.21 UTC+1 skrev Tor Christian Solevågseide 
følgende:
>
> As documented in https://jenkins.io/doc/book/pipeline/shared-libraries/, 
> I've created the file vars/acme.groovy in a library project checked into 
> our SVN.
>
>
> def setName(value) {
> this.name = value;
> }
> def getName() {
> return this.name;
> }
> def caution(message) {
> echo "Hello, ${this.name}! CAUTION: ${message}"
> }
>
>
>
>
> My pipeline script in a Jenkins2 pipeline project:
> acme.name = 'Alice'
> echo acme.name 
>
> acme.caution 'The queen is angry!'
>
>
>
>
> The two first lines, setting and getting the name works fine.
> But when I include the last line, calling the "caution" function the 
> script fails with
>
>
> hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No 
> signature of method: static Alice.caution() is applicable for argument 
> types: (java.lang.String) values: [The queen is angry!]
> Possible solutions: caution(java.lang.Object), wait(), 
> main([Ljava.lang.String;)
> at 
> groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1503)
> at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1489)
> at 
> org.codehaus.groovy.runtime.callsite.StaticMetaClassSite.call(StaticMetaClassSite.java:53)
> at 
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
> at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
> at 
> com.cloudbees.groovy.cps.sandbox.DefaultInvoker.methodCall(DefaultInvoker.java:18)
> at WorkflowScript.run(WorkflowScript:8)
>
>
>
> If I remove the first 2 lines of the pipeline script, leaving only the 
> "acme.caution" call, the error detail is changed to
>
> hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No 
> signature of method: static acme.caution() is applicable for argument types: 
> (java.lang.String) values: [The queen is angry!]
>
>
>
> Jenkins version 2.41
> Pipeline plugin 2.4
>
>
> Any idea what's going on here?  Feels like a bug, or at least wrong doc...?
>
> regards
> Tor Christian Solevågseide
>

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Jenkins2 pipeline - Global methods in shared-library fails when invoked

[Tor Christian Solevågseide]

As documented in https://jenkins.io/doc/book/pipeline/shared-libraries/, 
I've created the file vars/acme.groovy in a library project checked into 
our SVN.


def setName(value) {
this.name = value;
}
def getName() {
return this.name;
}
def caution(message) {
echo "Hello, ${this.name}! CAUTION: ${message}"
}




My pipeline script in a Jenkins2 pipeline project:
acme.name = 'Alice'
echo acme.name 

acme.caution 'The queen is angry!'




The two first lines, setting and getting the name works fine.
But when I include the last line, calling the "caution" function the script 
fails with


hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No 
signature of method: static Alice.caution() is applicable for argument 
types: (java.lang.String) values: [The queen is angry!]
Possible solutions: caution(java.lang.Object), wait(), 
main([Ljava.lang.String;)
at 
groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1503)
at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1489)
at 
org.codehaus.groovy.runtime.callsite.StaticMetaClassSite.call(StaticMetaClassSite.java:53)
at 
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at 
com.cloudbees.groovy.cps.sandbox.DefaultInvoker.methodCall(DefaultInvoker.java:18)
at WorkflowScript.run(WorkflowScript:8)



If I remove the first 2 lines of the pipeline script, leaving only the 
"acme.caution" call, the error detail is changed to

hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No 
signature of method: static acme.caution() is applicable for argument types: 
(java.lang.String) values: [The queen is angry!]



Jenkins version 2.41
Pipeline plugin 2.4


Any idea what's going on here?  Feels like a bug, or at least wrong doc...?

regards
Tor Christian Solevågseide

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