Forum: CFEngine Help
Subject: Re: conditional setting of a variable
Author: zzamboni
Link to topic: https://cfengine.com/forum/read.php?3,23180,23182#msg-23182
David,
ifvarclass indeed does not work inside the vars: section (I agree this would be
nice), but you can use the traditional class-expression blocks to conditionally
define variables, like in this example:
body common control
{
bundlesequence => { "test" };
}
bundle agent test
{
classes:
"runtime_condition" expression => fileexists("/tmp/foo");
vars:
"foo" string => "bar";
runtime_condition::
"conditional" string => "this sometimes happens";
reports:
cfengine_3::
"foo: $(foo)";
"conditional: $(conditional)";
}
When running it:
$ /var/cfengine/bin/cf-agent.exe -KI -f ./test_variables_classes.cf
R: foo: bar
R: conditional: $(conditional)
$ touch /tmp/foo
$ /var/cfengine/bin/cf-agent.exe -KI -f ./test_variables_classes.cf
R: foo: bar
R: conditional: this sometimes happens
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