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Email.pm
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Email.pm
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package Log::Dispatch::Email;
use strict;
use warnings;
use Log::Dispatch::Output;
use base qw( Log::Dispatch::Output );
use Params::Validate qw(validate SCALAR ARRAYREF BOOLEAN);
Params::Validate::validation_options( allow_extra => 1 );
our $VERSION = '2.25';
# need to untaint this value
my ($program) = $0 =~ /(.+)/;
sub new
{
my $proto = shift;
my $class = ref $proto || $proto;
my %p = validate( @_, { subject => { type => SCALAR,
default => "$program: log email" },
to => { type => SCALAR | ARRAYREF },
from => { type => SCALAR,
optional => 1 },
buffered => { type => BOOLEAN,
default => 1 },
} );
my $self = bless {}, $class;
$self->_basic_init(%p);
$self->{subject} = $p{subject} || "$0: log email";
$self->{to} = ref $p{to} ? $p{to} : [$p{to}];
$self->{from} = $p{from};
# Default to buffered for obvious reasons!
$self->{buffered} = $p{buffered};
$self->{buffer} = [] if $self->{buffered};
return $self;
}
sub log_message
{
my $self = shift;
my %p = @_;
if ($self->{buffered})
{
push @{ $self->{buffer} }, $p{message};
}
else
{
$self->send_email(@_);
}
}
sub send_email
{
my $self = shift;
my $class = ref $self;
die "The send_email method must be overridden in the $class subclass";
}
sub flush
{
my $self = shift;
if ($self->{buffered} && @{ $self->{buffer} })
{
my $message = join '', @{ $self->{buffer} };
$self->send_email( message => $message );
$self->{buffer} = [];
}
}
sub DESTROY
{
my $self = shift;
$self->flush;
}
1;
__END__
=head1 NAME
Log::Dispatch::Email - Base class for objects that send log messages
via email
=head1 SYNOPSIS
package Log::Dispatch::Email::MySender
use Log::Dispatch::Email;
use base qw( Log::Dispatch::Email );
sub send_email
{
my $self = shift;
my %p = @_;
# Send email somehow. Message is in $p{message}
}
=head1 DESCRIPTION
This module should be used as a base class to implement
Log::Dispatch::* objects that send their log messages via email.
Implementing a subclass simply requires the code shown in the
L<SYNOPSIS> with a real implementation of the C<send_email()> method.
=head1 CONSTRUCTOR
The constructor takes the following parameters in addition to the standard
parameters documented in L<Log::Dispatch::Output>:
=over 4
=item * subject ($)
The subject of the email messages which are sent. Defaults to "$0:
log email"
=item * to ($ or \@)
Either a string or a list reference of strings containing email
addresses. Required.
=item * from ($)
A string containing an email address. This is optional and may not
work with all mail sending methods.
=item * buffered (0 or 1)
This determines whether the object sends one email per message it is
given or whether it stores them up and sends them all at once. The
default is to buffer messages.
=back
=head1 METHODS
=over 4
=item * send_email(%p)
This is the method that must be subclassed. For now the only
parameter in the hash is 'message'.
=item * flush
If the object is buffered, then this method will call the
C<send_email()> method to send the contents of the buffer and then
clear the buffer.
=item * DESTROY
On destruction, the object will call C<flush()> to send any pending
email.
=back
=head1 AUTHOR
Dave Rolsky, <autarch@urth.org>
=cut