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package WebDAO::Store::MLDBM; |
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#$Id: MLDBM.pm 509 2009-03-03 19:45:02Z zag $ |
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=head1 NAME |
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WebDAO::Store::MLDBM - Implement session store using MLDBM |
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=head1 SYNOPSIS |
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... |
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SetEnv wdSession WebDAO::Sessionco |
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#for use external storage |
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SetEnv wdStore WebDAO::Store::MLDBM |
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SetEnv wdStorePar path=/tmp |
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.... |
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=head1 DESCRIPTION |
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WebDAO::Store::MLDBM - Implement session store using MLDBM |
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=cut |
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use File::Path; |
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use Fcntl ":flock"; |
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use IO::File; |
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use MLDBM qw (DB_File Data::Dumper); |
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use WebDAO::Store::Storable; |
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use Data::Dumper; |
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use strict 'vars'; |
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use base 'WebDAO::Store::Storable'; |
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our $VERSION = '1.01'; |
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sub load { |
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my $self = shift; |
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my $id = shift || return {}; |
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my %hash; |
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my $db_file = $self->_dir() . "sess_$id.db"; |
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my $db = tie %hash, "MLDBM", $db_file, O_CREAT | O_RDWR, 0644 or die "$!"; |
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my $fd = $db->fd(); |
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undef $db; |
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local *DBM; |
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open DBM, "+<&=$fd" or die "$!"; |
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flock DBM, LOCK_SH; |
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my $tmp_hash = $hash{$id}; |
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untie %hash; |
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flock DBM, LOCK_UN; |
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close DBM; |
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return $tmp_hash; |
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} |
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sub store { |
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my $self = shift; |
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my $id = shift || return {}; |
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my $ref_tree = shift; |
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return unless $ref_tree && ref($ref_tree); |
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my %hash; |
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my $db_file = $self->_dir() . "sess_$id.db"; |
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my $db = tie %hash, "MLDBM", $db_file, O_CREAT | O_RDWR, 0644 or die "$!"; |
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my $fd = $db->fd(); |
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undef $db; |
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local *DBM; |
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open DBM, "+<&=$fd" or die "$!"; |
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flock DBM, LOCK_EX; |
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$hash{$id} = $ref_tree; |
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untie %hash; |
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flock DBM, LOCK_UN; |
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close DBM; |
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return $id; |
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} |
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1; |