You've got a problem with the classes attribute in you vars promises
type. I guess it should read
"next_iface"
string => "${virtuals}",
classes => if_repaired("has_next_interface"),
# the ifavarclass is the problem, I only get the error message as in
the subject.
ifvarclass => not(classify("has_${base_iface}_${virtuals}"));
The "utf8" problem seems to be indeed linked to the use of slist in a
ifvarclass with function. Usually, it's a pointer problem within the
code of CFEngine, but I can't be of much more help with this
Regards
Nicolas
On 06/10/2011 09:00, no-re...@cfengine.com wrote:
> Forum: CFEngine Help
> Subject: ifvarclass and "Unable to parse class expression"
> Author: svenXY
> Link to topic: https://cfengine.com/forum/read.php?3,23678,23678#msg-23678
>
> Hi,
>
> I'm currently trying to develop a bundle that will allow me to create
> secondary (virtual) IP4-Interfaces, but I'm already stuck when trying to find
> out which is the next "free" number.
>
> Here's the code:
>
>
> body common control
> {
> version => "1.0.0";
> bundlesequence => { "nw_setup" };
> }
>
> bundle agent nw_setup {
>
> methods:
> "ok" usebundle => network_iface("eth0", "192.168.1.1");
>
> }
>
> bundle agent network_iface (base_iface, addr4)
> {
>
> # run execresult of "ip a s "
> # parse the result with regextract and find virtual interfaces (:0, :1,
> ...) that are already there
> # try to find the next "free" number"
>
> vars:
> "ipdata" string => execresult("/sbin/ip address show ${base_iface}",
> "noshell");
> "ip4" string => canonify("${addr4}");
> "virtuals" slist => {"0", "1", "2", "3", "4", "5", "6" };
>
> classes:
>
> "ok" expression => regextract(
> "inet .* scope global secondary
> ${base_iface}:(\d+)",
> "${ipdata}",
> "virtual_ifaces"
> ),
> comment => "Extract interface last numbers like eth0:1 should be 1";
>
>
> # set the class if a secondary interface of this name already exists:
> "has_${base_iface}_${virtuals}" expression => regarray(
> "virtual_ifaces", "^${virtuals}$");
>
> vars:
>
> # the idea here is to find the number for the first virtual interface
> that does not yet
> # exist and then set the class "has_next_interface" to prevent this from
> continuing the loop.
>
> !has_next_iface::
> "next_iface"
> string => "${virtuals}",
> classes => "has_next_interface",
>
> # the ifavarclass is the problem, I only get the error message as in
> the subject.
> ifvarclass => not(classify("has_${base_iface}_${virtuals}"));
>
> reports:
> linux::
> "the next virtual interface for ${base_iface} will be
> ${base_iface}:$(next_iface}";
>
>
> }
>
> body classes if_repaired(x)
> {
> promise_repaired => { "$(x)" };
> }
>
>
>
> The error message looks like broken utf-8 encoduings or so, maybe this helps.
>
> Ideas? Hints?
>
> Cheers,
> Sven
>
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