On Thu, Feb 18, 2010 at 01:14:16AM -0500, Mark Burgess wrote:
>
>Jesse,
>
>you should use the fully qualified name $(tmpl.varA) for the variables in the
>file, as
>they get processed in a different bundle and are therefore not "local"
This works, thanks:
[r...@host tmp]# cat /tmp/template
The first variable: ${test.varA}
And the second: ${test.varB}
[r...@host tmp]# cat /tmp/expanded
The first variable: This is value Alpha
And the second: This is value Bravo
The documentation posted online does not make this clear (and would have
saved me several hours of time yesterday), and the limited examples I
found online for using this method do not include mention of the full
qualification for the variables either:
http://www.cfengine.org/manuals/cf3-reference.html#expand_005fscalars-in-insert_005flines
http://project.iu.hio.no/viewvc/trunk/tests/units/unit_template.cf?view=markup&root=Cfengine-3
https://cfengine.org/pipermail/help-cfengine/2009-November/006706.html
Generally speaking, having more complete examples, including any
"supporting files" like sample template filess, would be a big help to
everyone. Perhaps these would be suitable for posting on the cfwiki?
>Jesse Becker wrote:
>> I'm trying to get a basic templating system working for several files,
>> and expand_scalars doesn't seem to work. I've found serveral references
>> to other people having success with this, so I assume I've done
>> something wrong. I'm running the cfengine 3.0.3 community RPM build.
>>
>> Here's the basic code:
>>
>>
>> bundle agent tmpl {
>>
>> vars:
>> hostname::
>> "varA" string => "This is value Alpha";
>> "varB" string => "This is value Bravo";
>>
>> files:
>> hostname::
>> "/tmp/template"
>> copy_from =>
>> update_copy("${g.repo}/template",${g.policy_server});
>>
>> "/tmp/expanded"
>> create => 'true',
>> edit_defaults => empty,
>> edit_line => expand_template("/tmp/template");
>> }
>>
>> Both 'empty' and 'expand_template come from cfengine_stdlib.cf file
>> posted a few days ago.
>>
>> The content of the 'template' file is simply two lines:
>>
>> The first variable: ${varA}
>> And the second: ${varB}
>>
>>
>>
>> I expect, after the expansion is done to have a file that looks like
>> this:
>>
>> The first variable: This is value Alpha
>> And the second: This is value Bravo
>>
>>
>> But alas, the two files are identical after running cf-agent.
>>
>> Below is the relevant output from --verbose. The template file copies
>> over without problems, and the 'expanded' file is created, but no
>> interpolation appears to be done.
>>
>> TIA,
>>
>>
>> cf3 Promise made by: /tmp/template
>> cf3 .........................................................
>> cf3
>> cf3 -> Copy file /tmp/template from
>> /usr/local/cfengine3/data/Packages/template check
>> ... <snip>
>> cf3 -> /tmp/template wasn't at destination (copying)
>> ... <snip>
>> cf3 -> New file /tmp/template.cfnew transmitted correctly - verified
>> ... <snip>
>>
>> cf3 .........................................................
>> cf3 Promise handle:
>> cf3 Promise made by: /tmp/expanded
>> cf3 .........................................................
>> cf3
>> cf3 -> Using literal pathtype for /tmp/expanded
>> cf3 -> No mode was set, choose plain file default 600
>> cf3 -> Created file /tmp/expanded, mode = 600
>> cf3 Build file model from a blank slate (emptying)
>> cf3 -> Handling file edits in edit_line bundle expand_template
>> cf3
>> cf3 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>> cf3 BUNDLE expand_template( {'/tmp/template'} )
>> cf3 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>> cf3
>> cf3 ? Augment scope expand_template with templatefile
>> cf3 ?? Private class context
>> cf3
>> cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>> cf3 insert_lines in bundle expand_template
>> cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>> cf3
>> cf3 .........................................................
>> cf3 Promise handle:
>> cf3 Promise made by: /tmp/template
>> cf3 .........................................................
>> cf3
>> cf3 -> Inserting the promised line "The first variable: ${varA}" into
>> /tmp/expanded after locator
>> cf3 -> Inserting the promised line "And the second: ${varB}" into
>> /tmp/expanded after locator
>> cf3 ?? Private class context
>> cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>> cf3 insert_lines in bundle expand_template
>> cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>> cf3
>> cf3
>> cf3 .........................................................
>> cf3 Promise handle:
>> cf3 Promise made by: /tmp/template
>> cf3 .........................................................
>> cf3
>> cf3 -> This promise has already been verified
>> cf3 ?? Private class context
>> cf3
>> cf3
>> cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>> cf3 insert_lines in bundle expand_template
>> cf3 = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>> cf3
>> cf3
>> cf3 .........................................................
>> cf3 Promise handle:
>> cf3 Promise made by: /tmp/template
>> cf3 .........................................................
>> cf3
>> cf3 -> This promise has already been verified
>> cf3 -> Saving edit changes to file /tmp/expanded
>> cf3 Edited file /tmp/expanded
>>
>>
>>
>
>--
>Mark Burgess
>
>-------------------------------------------------
>Professor of Network and System Administration
>Oslo University College, Norway
>
>Personal Web: http://www.iu.hio.no/~mark
>Office Telf : +47 22453272
>-------------------------------------------------
--
Jesse Becker
NHGRI Linux support (Digicon Contractor)
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