Réf. : Import not working as expected?

[paguerlais]

All the mystery comes from the way cfengine parses your files. What you
want to do is :
- load your cfagent.conf file. Then some classes are defined.
- parsing your cfagent.conf file, load your cf.brsb.groups, and define some
more classes (especially catw)
- go on parsing cfagent.conf, and load cf.catw if catw is defined.

Unfortunately, cfengine doesn't work as you intend it to do (or as you are
used to with other languages). What it does is :
- loads your cfagent.conf file and parses it _completely_. It means that
the parsing keeps track of the relevant actions only. As your catw classe
isn't defined at this point, your cf.catw import is discarded.
- proceeds with your cf.brsb.groups import. Then catw is defined, but it's
too late for cfagent.conf to keep track of your cf.catw import :-(

You just forgot that cfengine proceeds with imports _after_ all other
parsing operations.
The solution for your problem is either to define catw earlier in your
parsing (before the end of cfagent.conf parsing) or to force cfengine to
keep in mind that catw could be defined later. The first solution implies
that you add the definition of catw to your cfagent.conf file (but that's
not what you want to do), or use the AddInstallable directive as an
alternative. When you use AddInstallable, cfengine doesn't discard the
lines conditionned by an "installable" class as they are parsed, but acts
more dynamically as in a common programming language.

Shorter, add to your cfagent.conf file a line like "AddInstallable = ( catw
)" to "declare" all the classes which could be defined later during an
import or at execution time.

Patrice





help-cfengine-bounces+paguerlais=airfrance.fr@gnu.org@soda.csua.berkeley.edu

(Marco Nicosia) le 13/04/2003 01:36:59

Envoyé par :      marco@soda.csua.berkeley.edu (Marco Nicosia)


Pour : help-cfengine@gnu.org
cc :

Objet :     Import not working as expected?


Hi all,

We're attempting a first-time cfengine install in a complex environment.
I've been using the example configs from the reference guide. In that
guide, I see:

] import:
]     any::
]           cf.groups
]           cf.main
]           ...
]     hpux::      cf.hpux
]     linux::     cf.linux
]     ...

We like this style, and want to use it for ourselves, except that we
want to load action definitions based on group membership, rather than
membership defined by OS. So we wrote this cfagent.conf:

] import:
]     all::
]           cf.brsb.groups
]
]     catw::      cf.catw
]     ...

The cf.catw file defines actions for copy and shellcommands, but we've
run into an interesting problem. Even though it imports cf.brsb.groups,
the remote system does not import cf.catw, despite knowing it is in the
correct class:

] Import file cf.brsb.groups
] ...
] Defined Classes = ( any cfengine_2_0_6 Saturday Hr12 Min19 Min15_20
] Q2 Hr12_Q2 Day12 April Yr2003 solarisx86 catw001 32_bit sunos_5_8
] i86pc sunos_i86pc sunos_i86pc_5_8 i386 sunos_i86pc_5_8_Generic_108529_14
] compiled_on_solaris2_8 catw001_f catw001_walmart_com net_iface_lo0
] net_iface_iprb0 172_28_101_130 catw001_f_walmart_com 172_28_101
] ipv4_172_28_101_130 ipv4_172_28_101 ipv4_172_28 ipv4_172 net_iface_iprb1
] 172_28_101_164 catw001_b_walmart_com catw001_b ipv4_172_28_101_164
] catw )
  ^^^^

What boggles us is that if we do not import the cf.brsb.groups, rather,
include the groups directly in cfagent.conf, it works!

] groups:
]    catw = ( catw001 catw002 catw003 catw004 catw005 catw006 catw007 )
]
] import:
]    catw:: cf.catw

I'm thinking that import order cannot be deferred. I've read that
the actionsequence order of evaluation can be manipulated, (ie,
links.firstpass.include, links.secondpass) but I don't know how
I'd do the same for include files?

Help? Do I have to edit all groups in cfagent.conf, or is there
a way I can separate them out to a cf.groups file?


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