[chef] Re: Re: Re: Re: Re: Using platform_family in a provider?


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  • From: "Scott M. Likens" < >
  • To:
  • Subject: [chef] Re: Re: Re: Re: Re: Using platform_family in a provider?
  • Date: Wed, 25 Dec 2013 12:09:35 -0800

In case an example was helpful; https://github.com/damm/backup/blob/master/providers/install.rb#L11

Scott

On 12/24/13, 9:18 PM, Christopher Armstrong wrote:
" type="cite">
Gotcha. Thanks Noah.


On Wed, Dec 25, 2013 at 12:11 AM, Noah Kantrowitz < " target="_blank"> > wrote:
You have to do it in the action block, or rather inside a method of the provider class which is what #action creates.

--Noah

On Dec 24, 2013, at 9:10 PM, Christopher Armstrong < "> > wrote:

> Hmmm... maybe I need to put it in the library after all?
>
>  NameError
>        ---------
>        undefined local variable or method `node' for #<Class:0x00000003117670>
>
>
>        Cookbook Trace:
>        ---------------
>          /tmp/kitchen/cookbooks/java/providers/alternatives.rb:20:in `class_from_file'
>
>
>        Relevant File Content:
>        ----------------------
>        /tmp/kitchen/cookbooks/java/providers/alternatives.rb:
>
>         13:  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
>         14:  # See the License for the specific language governing permissions and
>         15:  # limitations under the License.
>         16:
>         17:  require 'chef/mixin/shell_out'
>         18:  include Chef::Mixin::ShellOut
>         19:
>         20>> alternatives_cmd = node['platform_family'] == 'rhel' ? 'alternatives' : 'update-alternatives'
>         21:
>         22:  action :set do
>         23:    if new_resource.bin_cmds
>         24:      new_resource.bin_cmds.each do |cmd|
>         25:
>         26:        bin_path = "/usr/bin/#{cmd}"
>         27:        alt_path = "#{new_resource.java_location}/bin/#{cmd}"
>         28:        priority = new_resource.priority
>         29:
>
>
>
> On Tue, Dec 24, 2013 at 8:34 PM, Christopher Armstrong < "> > wrote:
> Cool. Thanks Julian!
>
>
> On Tue, Dec 24, 2013 at 5:41 PM, Julian C. Dunn < "> > wrote:
> Hi Chris,
>
> Providers do have access to the node object, but you must refer to it
> directly e.g. node['platform_family'] . I don't believe the syntactic
> sugar of platform_family? is available.
>
> In library context you don't have access to the node object, so you
> can either pass it in on object initialization (e.g.
> https://github.com/socrata-cookbooks/java/blob/master/libraries/helpers.rb#L27)
> or passing parameters on method invocation.
>
> - Julian
>
> On Tue, Dec 24, 2013 at 2:14 PM, Christopher Armstrong
> < "> > wrote:
> > Ohai Chefs,
> >
> > I'm doing some Christmas Eve hacking, and I think I'm not approaching
> > something properly.
> >
> > Here is what I'm trying to do:
> > https://github.com/socrata-cookbooks/java/pull/111/files
> >
> > Essentially, I need to conditionalize code in a provider based on the node's
> > platform_family, but I don't believe I have access to the node objects or
> > methods within a provider. I could pass it in as a parameter, but that seems
> > clunky - the user of the provider shouldn't care about this detail. It's
> > something I want to abstract.
> >
> > Could someone point me in the right direction? I still get confused about
> > what Chef methods are available in recipes, libraries, providers, etc.
> >
> > Happy Holidays!
> >
> > Chris
>
>
>
> --
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>


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