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# Copyright 2007-2010 David Snopek <dsnopek@gmail.com> |
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# |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation, either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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# |
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package POE::Component::MessageQueue::Storage::DBI; |
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use Moose; |
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extends qw(POE::Component::MessageQueue::Storage::Generic); |
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has '+package' => ( |
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default => 'POE::Component::MessageQueue::Storage::Generic::DBI', |
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); |
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around new => sub { |
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my ($original, $class) = (shift, shift); |
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my @args; |
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if (ref($_[0]) eq 'HASH') { |
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@args = %{$_[0]}; |
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} else { |
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@args = @_; |
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} |
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$original->($class, @args, options => \@args); |
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}; |
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sub BUILD { |
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my ($self) = @_; |
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# Forces early termination if we cannot connect to db. |
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eval 'require ' . $self->package; |
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$self->package->new(@{$self->options}); |
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} |
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1; |
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__END__ |
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=pod |
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=head1 NAME |
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POE::Component::MessageQueue::Storage::DBI -- A storage engine that uses L<DBI> |
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=head1 SYNOPSIS |
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use POE; |
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use POE::Component::MessageQueue; |
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use POE::Component::MessageQueue::Storage::DBI; |
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use strict; |
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# For mysql: |
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my $DB_DSN = 'DBI:mysql:database=perl_mq'; |
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my $DB_USERNAME = 'perl_mq'; |
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my $DB_PASSWORD = 'perl_mq'; |
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my $DB_OPTIONS = undef; |
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POE::Component::MessageQueue->new({ |
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storage => POE::Component::MessageQueue::Storage::DBI->new({ |
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dsn => $DB_DSN, |
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username => $DB_USERNAME, |
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password => $DB_PASSWORD, |
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options => $DB_OPTIONS |
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}) |
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}); |
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POE::Kernel->run(); |
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exit; |
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=head1 DESCRIPTION |
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A storage engine that uses L<DBI>. All messages stored with this backend are |
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persisted. |
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Performance is increased greatly by wrapping this engine in |
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L<POE::Component::MessageQueue::Storage::Throttled> at the expense of being slower |
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to persist messages. |
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This module is really just L<POE::Component::MessageQueue::Storage::Generic> with |
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L<POE::Component::MessageQueue::Storage::Generic::DBI>. See the documentation for |
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those modules for more information (primarily |
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L<POE::Component::MessageQueue::Storage::Generic::DBI>). |
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=head1 CONSTRUCTOR PARAMETERS |
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=over 2 |
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=item dsn => SCALAR |
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=item username => SCALAR |
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=item password => SCALAR |
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=item options => SCALAR |
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=item mq_id => SCALAR |
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=back |
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=head1 SEE ALSO |
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L<POE::Component::MessageQueue>, |
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L<POE::Component::MessageQueue::Storage>, |
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L<DBI> |
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I<Other storage engines:> |
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L<POE::Component::MessageQueue::Storage::Memory>, |
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L<POE::Component::MessageQueue::Storage::BigMemory>, |
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L<POE::Component::MessageQueue::Storage::FileSystem>, |
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L<POE::Component::MessageQueue::Storage::Generic>, |
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L<POE::Component::MessageQueue::Storage::Generic::DBI>, |
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L<POE::Component::MessageQueue::Storage::Throttled>, |
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L<POE::Component::MessageQueue::Storage::Complex>, |
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L<POE::Component::MessageQueue::Storage::Default> |
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=cut |
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