NAME

App::CELL::Status - class for return value objects

VERSION

Version 0.165

SYNOPSIS

    use App::CELL::Status;

    # simplest usage
    my $status = App::CELL::Status->ok;
    print "ok" if ( $status->ok );
    $status = App::CELL::Status->not_ok;
    print "NOT ok" if ( $status->not_ok );

    # as a return value: in the caller
    my $status = $XYZ( ... );
    return $status if not $status->ok;  # handle failure
    my $payload = $status->payload;     # handle success

INHERITANCE

This module inherits from App::CELL::Message

DESCRIPTION

An App::CELL::Status object is a reference to a hash containing some or all of the following keys (attributes):

level - the status level (see "new", below)

message - message explaining the status

caller - an array reference containing the three-item list generated by the caller function

The typical use cases for this object are:

As a return value from a function call

To trigger a higher-severity log message

All calls to App::CELL::Status->new with a status other than OK trigger a log message.

PUBLIC METHODS

This module provides the following public methods:

new

Construct a status object and trigger a log message if the level is anything other than "OK". Always returns a status object. If no level is specified, the level will be 'ERR'. If no code is given, the code will be

dump

Dump an existing status object. Takes: PARAMHASH. Parameter 'to' determines destination, which can be 'string' (default), 'log' or 'fd'.

    # dump object to string
    my $dump_str = $status->dump();
       $dump_str = $status->dump( to => 'string' );
    
    # dump object to log
    $status->dump( to => 'log' );

    # dump object to file descriptor
    $status->dump( fd => STDOUT );
    $status->dump( to => 'fd', fd => STDOUT );

Always returns a true value.

ok

If the first argument is blessed, assume we're being called as an instance method: return true if status is OK, false otherwise.

Otherwise, assume we're being called as a class method: return a new OK status object with optional payload (optional parameter to the method call, must be a scalar).

not_ok

Similar method to 'ok', except it handles 'NOT_OK' status.

When called as an instance method, returns a true value if the status level is anything other than 'OK'. Otherwise false.

When called as a class method, returns a 'NOT_OK' status object. Optionally, a payload can be supplied as an argument.

level

Accessor method, returns level of status object in ALL-CAPS. All status objects must have a level attribute.

code

Accesor method, returns code of status object, or "<NONE>" if none present.

text

Accessor method, returns text of status object, or the code if no text present. If neither code nor text are present, returns "<NONE>"

caller

Accessor method. Returns array reference containing output of caller function associated with this status object, or [] if not present.

payload

When called with no arguments, acts like an accessor method. When called with a scalar argument, either adds that as the payload or changes the payload to that.

Logs a warning if an existing payload is changed.

Returns the (new) payload or undef.

msgobj

Accessor method (returns the parent message object)

cpanm App::CELL

perl -MCPAN -e shell
install App::CELL