Brian,
Thanks for you help.
Not sure why this wasn't working for me yesterday, it might have been a
scoping issue??
I can confirm that if I use the following inside a node{} block:
def bees = ["192.168.0.1", "192.168.0.2"]
for( def b: bees ) {
echo "${b}"
}
then I get the expected output
On Monday, February 9, 2015 at 5:35:34 PM UTC, Brian Ray wrote:
>
> Another stab in the dark. The double quotes mean the individual hostnames
> are GStrings instead of Strings. Maybe starting this way:
>
> def hostnames = ['192.168.0.1', '192.168.0.2']
>
>
> On Monday, February 9, 2015 at 9:25:52 AM UTC-8, Brian Ray wrote:
>>
>> Hi Robin,
>>
>> The simplest Groovy idiom for iterating over a collection is
>>
>> hostnames.each { host ->
>> do something interesting with host ...
>> }
>>
>>
>>
>> Does this work?
>>
>> Brian
>>
>> On Monday, February 9, 2015 at 5:48:11 AM UTC-8, Robin Tegg wrote:
>>>
>>> Hi all,
>>>
>>> I've been trying out the workflow plugin after watching the
>>> pimp-your-continuous-delivery-pipeline-with-jenkins-workflow-wjax-14
>>> <http://www.slideshare.net/cloudbees/pimp-your-continuous-delivery-pipeline-with-jenkins-workflow-wjax-14>
>>> demo.
>>> And in one of the slides (24), there is an example of a for loop that looks
>>> to iterate over a list of hostnames. I've assumed that hostnames is a list
>>>
>>> def hostnames = ["192.168.0.1", "192.168.0.2"]
>>> for( def hostname: hostnames ) {
>>> sh "ssh ${hostname} ..."
>>> }
>>>
>>> I'm wondering if anyone can help with my usage of arrays/lists. I'm
>>> getting the following errors when I try the above:
>>>
>>> java.io.NotSerializableException: java.util.AbstractList$Itr
>>>
>>>
>>> Now I understand from the docs
>>> (https://github.com/jenkinsci/workflow-plugin/blob/master/TUTORIAL.md#serialization-of-local-variables)
>>> that some variables can't be serialized before a "sh" step might happen,
>>> but as I'm new to groovy I'm struggling to understand how the above might
>>> be achieved. I've tried in a method and inline as suggested.
>>>
>>>
>>> The workaround I have at the moment is
>>>
>>>
>>> def hostnames = ["192.168.0.1", "192.168.0.2"]
>>> for( int i = 0; i < hostnames.size(); i++) {
>>> sh "ssh ${hostnames.get(i)} ..."
>>> }
>>>
>>> Any pointers would be much appreciated
>>>
>>> Thanks
>>> Robin
>>>
>>
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