NAME
Net::Appliance::Phrasebook - Network appliance command-line phrasebook
VERSION
This document refers to version 0.06 of Net::Appliance::Phrasebook.
SYNOPSIS
use Net::Appliance::Phrasebook;
my $pb = Net::Appliance::Phrasebook->new(
platform => 'IOS',
source => '/a/file/somewhere.yml', # optional
);
print $pb->fetch('a_command_alias'), "\n";DESCRIPTION
If you use Perl to manage interactive sessions with with the command-line interfaces of networked appliances, then you might find this module useful.
Net::Appliance::Phrasebook is a simple module that contains a number of dictionaries for the command-line interfaces of some popular network appliances.
It also supports the use of custom phrasebooks, and of hiearchies of dictionaries within phrasebooks.
TERMINOLOGY
This module is based upon Data::Phrasebook. A phrasebook is a file which contains one or more dictionaries. A dictionary is merely an associative array which maps keywords to values. In the case of this module, the values happen to be command line interface commands, or related data, that help in the remote management of network appliances.
METHODS
new
This method accepts a list of named arguments (associative array).
There is one required named argument, which is the class of device whose dictionary you wish to access. The named argument is called platform.
One further, optional argument to new is the filename of a phrasebook. If this is not provided, Net::Appliance::Phrasebook will use its own internal phrasebook (see "SUPPORTED SYSTEMS"). This named argument is called source.
The new constructor returns a query object, or undef on failure.
load
This is an alias for the new() constructor should you prefer to use it.
fetch
Pass this method a single keyword, and it will return the corresponding value from the dictionary. It will die on lookup failure, because that's what Data::Phrasebook does when there is no successful hit for the given keyword in available dictionaries.
SUPPORTED SYSTEMS
You can select the platform that most closely reflects your device. There is a hierarchy of platforms, so any entry in a given "lineage" will use itself and its "ancestors", in order, for lookups:
['FWSM3', 'FWSM', 'PIXOS']
['Aironet', 'IOS']For example the value FWSM (for Cisco Firewall Services Modules with software versions up to 2.x) will fetch commands from the FWSM dictionary and then the PIXOS dictionary, before failing.
Below is the list of built-in dictionaries, and of course you are able to supply your own via the new object method and an external file.
IOS
err_str : regular expression for error messages from the device
paging : the command used on Cisco IOS to control page length
prompt : a regular expression for Cisco IOS platform CLI promptsAironet
This is currently a synonym for IOS.
PIXOS
err_str : regular expression for error messages from the device
paging : the command used on Cisco PIXOS to control page length
prompt : a regular expression for Cisco PIXOS platform CLI promptsFWSM
This is currently a synonym for PIXOS.
FWSM3
This is currently a synonym for PIXOS, apart from...
paging : the command used on Cisco FWSM running software version
of 3.x or later to control page lengthCUSTOM PHRASEBOOKS
Phrasebooks must be written in YAML, with each dictionary being named within the top-level associative array in the stream. Please see Data::Phrasebook::Loader::YAML for more detail on the format of the content of a YAML phrasebook file.
In the world of network appliances, vendors will sometimes change the commands used in or even the appearance of the command line interface. This might happen between software version releases, or as a new product line is released.
However, typically there is an ancestry to all these interfaces, so we can base a new product's dictionary on an existing dictionary whilst overriding some entries with new values. If you study the source to this module, you'll see that the bundled phrasebook makes uses of such platform families to avoid repetition.
It is recommended that when creating new phrasebooks you follow this pattern. When doing so you must pass an array reference to the platform argument of new and it will be used as a list of dictionaries to find entries in, in order. Note that the array reference option for the platform argument will only work when used with a named external source data file.
DIAGNOSTICS
missing argument to Net::Appliance::Phrasebook::new-
You forgot to pass the required
platformargument tonew. unknown platform: foobar, could not find phrasebook-
You asked for a dictionary
foobarthat does not exist in the internal phrasebook.
DEPENDENCIES
Other than the the contents of the standard Perl distribution, you will need the following:
Data::Phrasebook::Loader::YAML >= 0.06
Data::Phrasebook >= 0.26
List::MoreUtils
Class::Data::Inheritable
YAML >= 0.62
BUGS
If you spot a bug or are experiencing difficulties that are not explained within the documentation, please send an email to oliver@cpan.org or submit a bug to the RT system (http://rt.cpan.org/). It would help greatly if you are able to pinpoint problems or even supply a patch.
SEE ALSO
Data::Phrasebook, Net::Appliance::Session, Data::Phrasebook::Loader::YAML
AUTHOR
Oliver Gorwits <oliver.gorwits@oucs.ox.ac.uk>
COPYRIGHT & LICENSE
Copyright (c) The University of Oxford 2006. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA