NetSDS::Feature(3) abstract application feature

SYNOPSIS


package NetSDS::Feature::DBI;
use DBI;
use base 'NetSDS::Feature';
sub init {
my ($self) = @_;
my $dsn = $self->conf->{dsn};
my $user = $self->conf->{user};
my $passwd = $self->conf->{passwd};
$self->{dbconn} = DBI->connect($dsn, $user, $passwd);
}
# Sample method - DBI::do proxy
sub do {
my $self = shift @_;
return $self->{dbconn}->do(@_);
}
1;

DESCRIPTION

Application "features" are Perl5 packages with unified API for easy integration of some functionality into NetSDS applications infrastructure.

"NetSDS::Feature" module contains superclass for application features providing the following common feature functionality: 

        * class construction
        * initialization stub
        * logging

CLASS METHODS

create($app, $conf) - feature constructor
init() - feature initialization
This method should be rewritten with feature functionality implementation. It's possibly to use application and configuration handlers at this time.

Example: 

        sub init {
                my ($self) = @_;
                $self->{answer} = $self->conf->{answer} || '42';
                my $pid = $self->app->pid();
                if ($self->app->daemon()) {
                        $self->log("info", "Seems we are in a daemon mode");
                }
        }

OBJECT METHODS

app() - application object
This method allows to use application methods and properties. 

        print "Feature included from app: " . $self->app->name;
conf() - feature configuration
This method provides access to feature configuration.
log($level, $message) - implements logging
Example: 

        # Write log message
        $self->log("info", "Application does something interesting.");

See NetSDS::Logger documentation for details.

EXAMPLES

See "samples/app_features.pl" script.

AUTHOR

Michael Bochkaryov <[email protected]>

LICENSE

Copyright (C) 2008-2009 Net Style Ltd.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

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