Forum: Cfengine Help
Subject: Re: Cfeninge Help (Mailing list): Re: Iterations for convergence :
vars do not iterate
Author: lefollfr
Link to topic: https://cfengine.com/forum/read.php?3,16228,16681#msg-16681
Hello,
As suggested, I opened a bug on the bug tracker, it was bug 0000062. It is now
fixed, and closed.
I see that with rev 930, "vars" section now is iterated, thus variables finally
become instanciated when possible.
This was what I was hoping, many thanks.
I do not want to reopen it, since the bug is fixed indeed ,but here are a few
remarks :
"Obfuscation" : the example I gave was not obfuscated on purpose ; it was just
as silly as many lab exercises :-), sorry for that. The purpose was to have a
simple self-contained example.
The real life bundle I was working on was rather like this :
- determine the class(es) I belong to (who I am, where I am, ...)
- define variables depending on theses classes
- use the variables in file copies (adapt the servers list, edit_file with
variable substitutions), in processes, ...
In the new example you give (note 0000078), you create a class when first
report promise is repaired ("classes => def" where body class def specifies
promise_repaired => { "xyz" };). I understand (may be wrong) that this is a
trick to skip first round and produce a new report during round 2.
I guess it would be even better if the promise_repaired clause could be
attached to the variable declaration !
But I tried to do that, with no success : cfengine accepts the classes clause
in the vars sections, but it does not seem to have much effect. I can give a
code example if it may help.
I also noticed that the new example does not work, as it is, at least with SVN
rev 930. cf-agent returned two errors :
- Scalar item in promise_repaired => { xyz } in rvalue is out of bounds (value
should match pattern .]+), near token '}'
- Body type mismatch for body reference "def" in promise at line 15 of
./test-converge-m.cf
In order to make it work, I made two changes :
- choose another name for body class def, e.g. body class defg, in order to
avoid conflict with variable scalar value "def"
- pass the promise_repaired class as an argument to body class defg
I think this has no connection with iteration on vars section. Did I miss
something (still a newby with cfengine) ? Or should I open a bug report ?
B.R.
Frederic
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