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package Prancer::Session::Store::Database::Driver::Pg; |
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2560
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use strict; |
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use warnings FATAL => 'all'; |
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use Prancer::Session::Store::Database::Driver; |
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use parent qw(Prancer::Session::Store::Database::Driver); |
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use Carp; |
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use Try::Tiny; |
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use Prancer qw(logger); |
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3195
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sub new { |
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my $class = shift; |
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try { |
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0
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require DBD::Pg; |
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} catch { |
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my $error = (defined($_) ? $_ : "unknown"); |
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logger->fatal("could not initialize session handler: could not load DBD::Pg: ${error}"); |
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croak; |
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}; |
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my $self = bless($class->SUPER::new(@_), $class); |
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my $database = $self->{'_database'}; |
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my $username = $self->{'_username'}; |
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my $password = $self->{'_password'}; |
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my $hostname = $self->{'_hostname'}; |
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my $port = $self->{'_port'}; |
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my $charset = $self->{'_charset'}; |
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my $table = $self->{'_table'}; |
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my $dsn = "dbi:Pg:dbname=${database}"; |
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$dsn .= ";host=${hostname}" if defined($hostname); |
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$dsn .= ";port=${port}" if defined($port); |
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0
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my $params = { |
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'AutoCommit' => 0, |
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'RaiseError' => 1, |
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'PrintError' => 0, |
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}; |
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if ($charset && $charset =~ /^utf8$/xi) { |
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$params->{'pg_enable_utf8'} = 1; |
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} |
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$self->{'_dsn'} = [$dsn, $username, $password, $params]; |
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logger->debug("session handler database connection dsn: ${dsn}"); |
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0
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return $self; |
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} |
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sub fetch { |
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my ($self, $session_id) = @_; |
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my $dbh = $self->handle(); |
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my $result = undef; |
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try { |
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my $now = time(); |
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my $table = $self->{'_table'}; |
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my $sth = $dbh->prepare_cached(qq| |
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SELECT data |
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FROM ${table} |
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WHERE id = ? |
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AND timeout >= ? |
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|); |
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$sth->execute($session_id, ($now - $self->{'_timeout'})); |
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my ($data) = $sth->fetchrow_array(); |
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$sth->finish(); |
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$result = ($data ? $self->{'_deserializer'}->($data) : ()); |
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$dbh->commit(); |
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} catch { |
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my $error = (defined($_) ? $_ : "unknown"); |
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logger->error("error fetching from session: ${error}"); |
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$dbh->rollback(); |
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}; |
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return $result; |
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} |
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sub store { |
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my ($self, $session_id, $data) = @_; |
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my $dbh = $self->handle(); |
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try { |
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my $now = time(); |
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my $table = $self->{'_table'}; |
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my $insert_sth = $dbh->prepare_cached(qq| |
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INSERT INTO ${table} (id, data) |
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SELECT :id, :data |
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WHERE NOT EXISTS ( |
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SELECT 1 |
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FROM ${table} |
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WHERE id = :id |
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AND timeout >= :timeout |
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) |
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|); |
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$insert_sth->bind_param(':id', $session_id); |
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$insert_sth->bind_param(':data', $self->{'_serializer'}->($data)); |
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$insert_sth->bind_param(':timeout', ($now - $self->{'_timeout'})); |
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$insert_sth->execute(); |
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$insert_sth->finish(); |
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my $update_sth = $dbh->prepare_cached(qq| |
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UPDATE ${table} |
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SET data = :data |
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WHERE id = :id |
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AND timeout >= :timeout |
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|); |
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$update_sth->bind_param(':id', $session_id); |
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$update_sth->bind_param(':data', $self->{'_serializer'}->($data)); |
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$update_sth->bind_param(':timeout', ($now - $self->{'_timeout'})); |
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$update_sth->execute(); |
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$update_sth->finish(); |
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if ($self->{'_autopurge'}) { |
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my $chance = rand(); |
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if ($chance <= 0.1) { |
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my $delete_sth = $dbh->prepare_cached("DELETE FROM ${table} WHERE timeout < ?"); |
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$delete_sth->execute($now - $self->{'_timeout'}); |
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$delete_sth->finish(); |
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} |
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} |
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0
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$dbh->commit(); |
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} catch { |
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0
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my $error = (defined($_) ? $_ : "unknown"); |
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logger->error("error fetching from session: ${error}"); |
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136
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$dbh->rollback(); |
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}; |
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139
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0
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return; |
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} |
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142
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sub remove { |
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my ($self, $session_id) = @_; |
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0
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my $dbh = $self->handle(); |
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146
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try { |
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my $table = $self->{'_table'}; |
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my $sth = $dbh->prepare_cached("DELETE FROM ${table} WHERE id = ?"); |
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$sth->execute($session_id); |
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0
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$sth->finish(); |
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152
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0
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$dbh->commit(); |
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} catch { |
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0
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0
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my $error = (defined($_) ? $_ : "unknown"); |
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logger->error("error fetching from session: ${error}"); |
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157
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0
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$dbh->rollback(); |
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}; |
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160
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0
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return; |
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} |
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163
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1; |
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