Forum: CFEngine Help
Subject: Re: conditional setting of a variable
Author: neilhwatson
Link to topic: https://cfengine.com/forum/read.php?3,23180,23200#msg-23200
Vars promises are before classes. I would expect that the variable would not
be defined until the second run. However, the report is promised during the
first run even without the variable defined. During the following second and
third runs the reports promise has already been verified and is thus locked. So
I think we are seeing expected behaviour however disappointing.
If you use the isvariable function you can get around this.
body common control
{
bundlesequence => { "test" };
}
bundle agent test
{
classes:
"runtime_condition" expression => fileexists("/etc/passwd");
"var_defined" expression => isvariable("conditional");
vars:
"foo" string => "bar";
runtime_condition::
"conditional" string => "this sometimes happens";
reports:
cfengine_3::
"foo: $(foo)";
var_defined::
"conditional: $(conditional)";
}
neil@ettin ~/.cfagent/inputs $ cf-agent -IKf ./test.cf
R: foo: bar
R: conditional: this sometimes happens
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