Hi, Jerome. I suggest using cf-promises to check the syntax on your policy:
[cfengine00 ~]# cf-promises -f ./test.cf
Arguments to function readfile(.) do not tally. Expect 2 not 1
Promise (version not specified) belongs to bundle 'g' in file
'./test.cf' near line 5
[cfengine00 ~]#
You have to tell readfile max number of bytes to read from the file.
If you want to explicitly make a class (rather than just use
ifvarclass to create
the class), you can do it with a classes type promise as Seva suggested.
{{{
bundle common g
{
vars:
"temp" string => readfile( "/tmp/test.txt", "99" );
classes:
"$(temp)" expression => "any";
}
bundle agent animal
{
commands:
"/bin/echo $(g.temp)"
ifvarclass => canonify("$(g.temp)");
reports:
DOG::
"I have a pet dog.";
}
}}}
How's that?
Aleksey
On Tue, Sep 13, 2011 at 11:36 AM, Jerome Yanga <[email protected]> wrote:
> Aleksey,
>
> I came up with the following but I seem to be misinterpreting the reference
> manual. I have also used canonify to no avail. Help.
>
> $ cat /tmp/test.txt
> DOG
>
> bundle common g
> {
> vars:
>
> "temp" string => readfile( "/tmp/test.txt" );
> }
>
> bundle agent animal
> {
> commands:
> "/bin/echo $(g.temp)"
> ifvarclass => "$(g.temp)";
> reports:
> DOG::
> "I have a pet dog.";
> }
>
> Regards,
> j
>
> -----Original Message-----
> From: Aleksey Tsalolikhin [mailto:[email protected]]
> Sent: Tuesday, September 13, 2011 11:20 AM
> To: Jerome Yanga
> Cc: [email protected]
> Subject: Re: CFEngine Help: how to convert vars to a class
>
> Yes, you can do it using the ifvarclass, which converts a variable to
> a class. Could you please read the ifvarclass section of the
> reference manual, and let me know if you have any questions.
>
> Best,
> Aleksey
>
>
> On Tue, Sep 13, 2011 at 11:13 AM, Jerome Yanga <[email protected]> wrote:
>> Is it possible to do what I am attempting to?
>>
>> Regards,
>> j
>>
>> -----Original Message-----
>> From: Jerome Yanga
>> Sent: Monday, September 12, 2011 4:27 PM
>> To: 'Aleksey Tsalolikhin'
>> Cc: '[email protected]'
>> Subject: RE: CFEngine Help: how to convert vars to a class
>>
>> Aleksey,
>>
>> Thank you for the quick response.
>>
>> My main objective is to make the contents of /tmp/test.txt into a class.
>> Hence, I would like to do the reporting.
>>
>> bundle agent animal
>> {
>> reports:
>> DOG::
>> "I have a pet dog.";
>> }
>>
>> Regards,
>> j
>>
>> -----Original Message-----
>> From: Aleksey Tsalolikhin [mailto:[email protected]]
>> Sent: Monday, September 12, 2011 4:15 PM
>> To: Jerome Yanga
>> Cc: [email protected]
>> Subject: Re: CFEngine Help: how to convert vars to a class
>>
>> On Mon, Sep 12, 2011 at 3:58 PM, Jerome Yanga <[email protected]> wrote:
>>> I saw another post on how to do this but it does not seem to work for me.
>>> Please correct my syntax
>>
>> How's this?
>>
>> [cfengine00 ~]# cat /tmp/test.txt
>> DOG
>> [cfengine00 ~]# cat test.cf
>> body common control {
>> bundlesequence => { "animal" };
>> }
>>
>> bundle common g
>> {
>> vars:
>>
>> "temp" string => readfile("/tmp/test.txt", "4" );
>> }
>>
>> bundle agent animal
>> {
>> commands: "/bin/echo $(g.temp)";
>> commands:
>> "/bin/echo I have a pet dog."
>> ifvarclass => "$(g.temp)";
>> }
>> [cfengine00 ~]# cf-agent -f ./test.cf
>> Q: ".../bin/echo DOG": DOG
>> I: Last 1 quoted lines were generated by promiser "/bin/echo DOG"
>> [cfengine00 ~]#
>>
>> Note the use of ifvarclass attribute to use a variable as a class; and
>> the full name of the variable (including the bundle name) in g.temp.
>> CFEngine bundles have scope, so you have to use the full name to call
>> a variable from another bundle (even a global variable).
>>
>> Yours,
>> -at
>>
>>
>
>
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