[chef] Re: Re: Re: Re: HWRP Array attribute not reset

[Noah Kantrowitz < >]

If you want sane deep merge semantics, you have to not use arrays. Otherwise 
just ensure only ever set things once and you should be fine.

--Noah

On Mar 11, 2014, at 4:14 PM, "Stewart, Curtis" 
<
 >
 wrote:

> Thanks for the article!
> 
> I attempted to add a helper method to convert the options before passing, 
> still no luck.  I’d really like to stay away from setting these values to 
> hashes.
> 
> def mutable_arrray(attribute)
> attribute.map { |value| value }
> end
> 
> I’m surprised this behavior doesn’t come up more often when using built in 
> resources (i.e. path attribute for execute resource).
> 
> Curtis
> 
> On Mar 11, 2014, at 5:39 PM, Noah Kantrowitz 
> <
 >
>  wrote:
> 
>> You are probably running in to the merge behavior of arrays in node 
>> attributes. Check out https://coderanger.net/2013/06/arrays-and-chef/ for ;
>> more info.
>> 
>> --Noah
>> 
>> On Mar 11, 2014, at 3:35 PM, "Stewart, Curtis" 
>> <
 >
>>  wrote:
>> 
>>> Attribute Sample:
>>> 
>>> node[‘servers’][‘main’][‘external_addresses’] = %w { 33.33.33.33 }
>>> 
>>> Recipe Context:
>>> 
>>> node[’servers'].each do |name, options|
>>>    server name do
>>>      external_addresses options['external_addresses']
>>>    end
>>> end
>>> 
>>> Then, if I update that attribute value to, say %w{ 33.33.33.30 }, the 
>>> resource loads with both addresses.
>>> 
>>> Curtis
>>> 
>>> On Mar 11, 2014, at 5:20 PM, Noah Kantrowitz 
>>> <
 >
>>>  wrote:
>>> 
>>>> Can you give an example of how you are using it?
>>>> 
>>>> --Noah
>>>> 
>>>> On Mar 11, 2014, at 3:19 PM, "Stewart, Curtis" 
>>>> <
 >
>>>>  wrote:
>>>> 
>>>>> I’m working with a custom HWRP, and I have an attribute of type Array. 
>>>>> 
>>>>> The definition is below, and the issue I’m trying to trouble shoot is 
>>>>> that if I update the value of my array, instead of resetting the array, 
>>>>> they new values are appended to the array.
>>>>> 
>>>>> 
>>>>>   def external_addresses(arg = nil)
>>>>>     set_or_return(:external_addresses, arg, :kind_of => Array)
>>>>>   end
>>>>> 
>>>>> 
>>>>> Thanks for any feedback,
>>>>> Curtis
>>>> 
>>> 
>> 
>

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