Man pages sections > man3 > App::CELL

App::CELL - Configuration, Error-handling, Localization, and Logging

App::CELL(3pm) User Contributed Perl Documentation App::CELL(3pm)

NAME

App::CELL - Configuration, Error-handling, Localization, and Logging

VERSION

Version 0.219

SYNOPSIS

    # imagine you have a script/app called 'foo' . . . 
    use Log::Any::Adapter ( 'File', "/var/tmp/foo.log" );
    use App::CELL qw( $CELL $log $meta $site );
    # load config params and messages from sitedir
    my $status = $CELL->load( sitedir => '/etc/foo' );
    return $status unless $status->ok;
    # set appname to FOO_APPNAME (a config param just loaded from sitedir)
    $CELL->appname( $CELL->FOO_APPNAME || "foo" );
    # write to the log
    $log->notice("Configuration loaded from /etc/foo");
    # get value of site configuration parameter FOO_PARAM
    my $val = $site->FOO_PARAM;
    # get a list of all supported languages
    my @supp_lang = $CELL->supported_languages;
    # determine if a language is supported
    print "sk supported" if $CELL->language_supported('sk');
    # get message object and text in default language
    $status = $CELL->msg('FOO_INFO_MSG');
    my $fmsg = $status->payload if $status->ok;
    my $text = $fmsg->text;
    # get message object and text in default language
    # (message that takes arguments)
    $fmsg = $CELL->msg('BAR_ARGS_MSG', "arg1", "arg2");
    print $fmsg->text, "\n";
    # get text of message in a different language
    my $sk_text = $fmsg->lang('sk')->text;

DESCRIPTION

This is the top-level module of App::CELL, the Configuration, Error-handling, Localization, and Logging framework for applications (or scripts) written in Perl.
For details, read the POD in the App::CELL distro. For an introduction, read App::CELL::Guide.

EXPORTS

This module provides the following exports:
$CELL - App::CELL singleton object
$log - App::CELL::Log singleton object
$meta - App::CELL::Config singleton object
$core - App::CELL::Config singleton object
$site - App::CELL::Config singleton object

METHODS

appname

If no argument is given, returns the "appname" -- i.e. the name of the application or script that is using App::CELL for its configuration, error handling, etc.
If an argument is given, assumes that it denotes the desired "appname" and sets it. Also initializes the logger.

enviro

Get the "enviro" attribute, i.e. the name of the environment variable containing the sitedir

loaded

Get the current load status, which can be any of the following:
0 nothing loaded yet
'SHARE' sharedir loaded
'BOTH' sharedir _and_ sitedir loaded

sharedir

Get the "sharedir" attribute, i.e. the full path of the site configuration directory (available only after sharedir has been successfully loaded)

sitedir

Get the "sitedir" attribute, i.e. the full path of the site configuration directory (available only after sitedir has been successfully loaded)

supported_languages

Get list of supported languages. Equivalent to:
    $site->CELL_SUPP_LANG || [ 'en ]

language_supported

Determine if a given language is supported.

"load"

Attempt to load messages and configuration parameters from the sharedir and, possibly, the sitedir as well.
Takes: a PARAMHASH that should include at least one of "enviro" or "sitedir" (if both are given, "enviro" takes precedence with "sitedir" as a fallback). The PARAMHASH can also include a "verbose" parameter which, when set to a true value, causes the load routine to log more verbosely.
Returns: an "App::CELL::Status" object, which could be any of the following:
OK success
WARN previous call already succeeded, nothing to do
ERR failure
On success, it also sets the "CELL_META_START_DATETIME" meta parameter.

Status constructors

The following "factory" makes a bunch of status constructor methods (wrappers for App::CELL::Status->new )
status_crit
Constructor for 'CRIT' status objects
status_critical
Constructor for 'CRIT' status objects
status_debug
Constructor for 'DEBUG' status objects
status_emergency
Constructor for 'DEBUG' status objects
status_err
Constructor for 'ERR' status objects
status_error
Constructor for 'ERR' status objects
status_fatal
Constructor for 'FATAL' status objects
status_info
Constructor for 'INFO' status objects
status_inform
Constructor for 'INFORM' status objects
status_not_ok
Constructor for 'NOT_OK' status objects
status_notice
Constructor for 'NOTICE' status objects
status_ok
Constructor for 'OK' status objects
status_trace
Constructor for 'TRACE' status objects
status_warn
Constructor for 'WARN' status objects
status_warning
Constructor for 'WARNING' status objects

msg

Construct a message object (wrapper for App::CELL::Message::new) Copyright (c) 2014-2015, SUSE LLC
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of SUSE LLC nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2016-09-03 perl v5.22.2