[chef] Re: RE: RE: Re: Re: NOT_IF and ONLY_IF validation problem.

[Carlos Camacho < >]

Adam!

Thanks a lot xD

https://www.youtube.com/watch?v=BNV2jZUjKlc




On Wed, Aug 20, 2014 at 7:07 PM, Jeremy Mauro 
<
 >
 wrote:
> Hi everyone,
>
>
>
> In the documentation it is not clearly in which version of chef the
> attribute ‘convert_boolean_return’ and ‘interpreter’ has been introduced,
> because we are using chef-11-10-4 and it doesn’t seem to be implemented in
> this version.
>
> Do you think it could be possible to have a better highlight of the version
> where the attributes were introduced, because it is not clear see where to
> search such information except from reading directly the chef-client code.
>
>
>
> Thx
>
>
>
>
>
>
>
>
>
>
>
>
>
> From: Adam Edwards 
> [mailto:
 
> Sent: mercredi 20 août 2014 18:09
> To: 
> 
 
> Subject: [chef] RE: Re: Re: NOT_IF and ONLY_IF validation problem.
>
>
>
> Carlos, $lastexitcode does not give you the exit status of the last
> powershell cmdlet, it gives you the last exit status of a Windows process
> that you executed. Since get-website is a cmdlet, lastexitcode tells you
> nothing about its success or failure. For cmdlet status, use $?, which is
> $true if the last cmdlet succeeded, $false otherwise.
>
>
>
> Powershell_script actually has a feature to make your scenario easy – just
> provide a boolean expression to your guard, something like (get-website |
> where-object { $_.name -eq 'My_Web_App' }).length > 0, which will return
> $true if there’s a web site satisfying the query (assuming get-website
> returns a collection with a length property) and $false otherwise.
>
>
>
> You can read more about this capability in this documentation from
> http://docs.getchef.com/resource_powershell_script.html -- see the excerpt
> below:
>
>
>
>
>
> convert_boolean_return
>
> Use to return 0 if the last line of a command is evaluated to be true or to
> return 1 if the last line is evaluated to be false. Default value: false.
>
>
>
> When the guard_intrepreter common attribute is set to :powershell_script, a
> string command will be evaluated as if this value were set to true. This is
> because the behavior of this attribute is similar to the value of the "$?"
> expression common in UNIX interpreters. For example, this:
>
>
>
> powershell_script 'make_safe_backup' do
>
>   guard_interpreter :powershell_script
>
>   code 'cp ~/data/nodes.json ~/data/nodes.bak'
>
>   not_if 'test-path ~/data/nodes.bak'
>
> end
>
> is similar to:
>
>
>
> bash 'make_safe_backup' do
>
>   code 'cp ~/data/nodes.json ~/data/nodes.bak'
>
>   not_if 'test -e ~/data/nodes.bak'
>
> end
>
>
>
> From: Seth Vargo 
> [mailto:
 
> Sent: Wednesday, August 20, 2014 7:55 AM
> To: 
> 
 
> Subject: [chef] Re: Re: NOT_IF and ONLY_IF validation problem.
>
>
>
> Hi Carlos,
>
>
>
> You also posted this question on StackOverflow:
> http://stackoverflow.com/questions/25406353/chef-not-if-and-only-if-validation-issue-in-windows-recipes.
>
>
>
> I understand that you are trying to get the fastest answer possible, but
> posting the same question in multiple channels, you may discourage the
> chances of getting an answer. It gives a wry impression. Here's what I would
> recommend:
>
>
>
> - If you have a question and you need an answer NOW, IRC is the best bet.
> You will get real-time communication with members of Chef and the Chef
> community.
>
> - If you have a question that is about process, best practice, or opinion,
> this mailing list is probably your best bet. If you need to show code on the
> mailing list, using a service like PasteBin or GitHub Gist can make the
> email more readable.
>
> - If you have a specific code example (i.e. why is this failing),
> StackOverflow/ServerFault are usually the best.
>
>
>
> I realize there are definitely areas for overlap, so please use your best
> judgement.
>
>
>
> Thanks,
>
> Seth
>
>
>
> On Aug 20, 2014, at 10:40 AM, Julian C. Dunn 
> <
 >
>  wrote:
>
>
>
> On Wed, Aug 20, 2014 at 8:16 AM, Carlos Camacho
> <
 >
>  wrote:
>
> Hello!
>
> Im runing this simple recipe block to create a web app in IIS
>
> powershell_script "create_site_my_site" do
>    code "New-webapppool -name 'My_Web_App'; New-Website -Name
> 'My_Web_App' -applicationpool 'My_Web_App' -Port '80' -IPAddress *
> -PhysicalPath 'c:\webs\My_Web_App'  "
>    action :run
>    not_if "get-website | where-object { $_.name -eq 'My_Web_App' }"
> end
>
>
> The problem here its that the NOT_IF part its allways True
>
>
> PS C:\Users\carlos>
> PS C:\Users\carlos> get-website | where-object { $_.name -eq 'asdfasdfasdf'
> }
> PS C:\Users\carlos> echo $lastexitcode
> 1
> PS C:\Users\carlos> get-website | where-object { $_.name -eq 'My_Web_App' }
>
> Name               ID    State          Physical Path
> Bindings
> ----                   --     -----             -------------
>                --------
> My_Web_App  6     Stopped      c:\webs\My_Web_App http *:80:
>
>                https *:443:
>
> PS C:\Users\carlos.camacho> echo $lastexitcode
> 1
>
> Now, my question is about how to return True or False in the NOT_IF
> depending on my code return value ??
>
>
> Use the convert_boolean_return attribute in the powershell_script
> resource to do the right thing. See the documentation for information
> about what that does & why.
>
> http://docs.getchef.com/resource_powershell_script.html
>
> I imagine that this will become the default when :guard_interpreter
> becomes :powershell by default for powershell_script.
>
> - Julian
>
> --
> [ Julian C. Dunn 
> <
 >
>           * Sorry, I'm    ]
> [ WWW: http://www.aquezada.com/staff/julian    * only Web 1.0  ;]
> [ gopher://sdf.org/1/users/keymaker/           * compliant! ;]
> [ PGP: 91B3 7A9D 683C 7C16 715F 442C 6065 D533 FDC2 05B9       ]
>
>