Howdy. I feel like I am missing something really simply with regards to the
way that Puppet works and I am wondering if someone can point me in the
write direction.
I have written a class that downloads, uncompresses, compiles, and installs
Python from source. So far so good. The problem is that it only needs to do
this once, when Python is not already in place (or some other custom
indicator of the Python version). I have my 3 calls to exec doing their
checks just fine, but my calls to wget::fetch and archive::untar both fire
during every apply. Specifically, archive::untar takes about 30 seconds to
run and I'd prefer it if it only ran conditionally.
What is the best way to make sure that this code:
wget::fetch { "python-${version}":
source =>
"http://python.org/ftp/python/${version}/Python-${version}.tgz";,
destination => "/tmp/Python-${version}.tgz",
}
archive::untar {"/tmp/python-${version}":
source => "/tmp/Python-${version}.tgz",
compression => 'gz',
rootdir => "Python-${version}",
require => Wget::Fetch["python-${version}"],
}
only runs when some condition is met? I can easily put a custom file in
place to look for, but how do I make these commands dependent on its
absence? I tried making such a file and subscribing to it, but these
commands still ran each time.
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