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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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6
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111
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4
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4
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4
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11
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use warnings FATAL => 'all'; |
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4
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4
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4
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97
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5
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6
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4
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4
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13
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use Prancer::Session::Store::Database::Driver; |
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4
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4
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65
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7
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4
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4
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9
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use parent qw(Prancer::Session::Store::Database::Driver); |
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4
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9
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4
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10
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8
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9
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4
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4
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175
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use Carp; |
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4
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4
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4
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158
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10
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4
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4
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21
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use Try::Tiny; |
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4
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3
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4
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151
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11
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4
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4
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9
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use Prancer qw(logger); |
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4
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4
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4
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3195
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12
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13
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sub new { |
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0
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0
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1
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my $class = shift; |
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16
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try { |
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0
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0
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require DBD::Pg; |
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18
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} catch { |
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0
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0
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0
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my $error = (defined($_) ? $_ : "unknown"); |
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0
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logger->fatal("could not initialize session handler: could not load DBD::Pg: ${error}"); |
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0
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croak; |
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0
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}; |
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0
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my $self = bless($class->SUPER::new(@_), $class); |
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25
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0
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my $database = $self->{'_database'}; |
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0
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my $username = $self->{'_username'}; |
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0
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my $password = $self->{'_password'}; |
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0
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my $hostname = $self->{'_hostname'}; |
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29
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0
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my $port = $self->{'_port'}; |
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30
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0
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my $charset = $self->{'_charset'}; |
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0
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my $table = $self->{'_table'}; |
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32
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33
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0
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my $dsn = "dbi:Pg:dbname=${database}"; |
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0
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0
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$dsn .= ";host=${hostname}" if defined($hostname); |
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0
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0
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$dsn .= ";port=${port}" if defined($port); |
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36
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37
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0
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my $params = { |
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38
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'AutoCommit' => 0, |
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39
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'RaiseError' => 1, |
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40
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'PrintError' => 0, |
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41
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}; |
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42
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0
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0
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0
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if ($charset && $charset =~ /^utf8$/xi) { |
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43
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0
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$params->{'pg_enable_utf8'} = 1; |
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44
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} |
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45
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46
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0
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$self->{'_dsn'} = [$dsn, $username, $password, $params]; |
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47
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0
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logger->debug("session handler database connection dsn: ${dsn}"); |
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48
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49
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0
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return $self; |
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50
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} |
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51
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52
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sub fetch { |
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53
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0
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0
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1
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my ($self, $session_id) = @_; |
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54
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0
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my $dbh = $self->handle(); |
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55
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56
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0
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my $result = undef; |
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57
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try { |
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58
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0
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0
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my $now = time(); |
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59
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0
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my $table = $self->{'_table'}; |
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60
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61
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0
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my $sth = $dbh->prepare_cached(qq| |
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62
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SELECT data |
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63
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FROM ${table} |
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64
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WHERE id = ? |
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65
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AND timeout >= ? |
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66
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|); |
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67
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0
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$sth->execute($session_id, ($now - $self->{'_timeout'})); |
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68
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0
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my ($data) = $sth->fetchrow_array(); |
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69
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0
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$sth->finish(); |
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70
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71
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72
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0
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0
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$result = ($data ? $self->{'_deserializer'}->($data) : ()); |
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73
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74
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0
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$dbh->commit(); |
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75
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} catch { |
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76
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0
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0
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0
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my $error = (defined($_) ? $_ : "unknown"); |
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77
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0
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logger->error("error fetching from session: ${error}"); |
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78
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79
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0
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$dbh->rollback(); |
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80
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0
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}; |
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81
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82
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0
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return $result; |
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83
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} |
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84
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85
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sub store { |
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86
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0
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0
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1
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my ($self, $session_id, $data) = @_; |
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87
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0
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my $dbh = $self->handle(); |
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88
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89
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try { |
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90
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0
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0
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my $now = time(); |
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91
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0
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my $table = $self->{'_table'}; |
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92
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93
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0
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my $insert_sth = $dbh->prepare_cached(qq| |
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94
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INSERT INTO ${table} (id, data) |
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95
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SELECT :id, :data |
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96
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WHERE NOT EXISTS ( |
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97
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SELECT 1 |
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98
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FROM ${table} |
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99
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WHERE id = :id |
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100
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AND timeout >= :timeout |
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101
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) |
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102
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|); |
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103
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0
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$insert_sth->bind_param(':id', $session_id); |
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104
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0
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$insert_sth->bind_param(':data', $self->{'_serializer'}->($data)); |
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105
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0
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$insert_sth->bind_param(':timeout', ($now - $self->{'_timeout'})); |
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106
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0
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$insert_sth->execute(); |
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107
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0
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$insert_sth->finish(); |
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108
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109
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0
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my $update_sth = $dbh->prepare_cached(qq| |
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110
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UPDATE ${table} |
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111
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SET data = :data |
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112
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WHERE id = :id |
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113
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AND timeout >= :timeout |
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114
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|); |
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115
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0
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$update_sth->bind_param(':id', $session_id); |
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116
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0
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$update_sth->bind_param(':data', $self->{'_serializer'}->($data)); |
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117
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0
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$update_sth->bind_param(':timeout', ($now - $self->{'_timeout'})); |
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118
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0
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$update_sth->execute(); |
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119
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0
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$update_sth->finish(); |
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120
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121
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122
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0
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0
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if ($self->{'_autopurge'}) { |
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123
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0
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my $chance = rand(); |
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124
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0
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0
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if ($chance <= 0.1) { |
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125
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0
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my $delete_sth = $dbh->prepare_cached("DELETE FROM ${table} WHERE timeout < ?"); |
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126
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0
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$delete_sth->execute($now - $self->{'_timeout'}); |
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127
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0
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$delete_sth->finish(); |
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128
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} |
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129
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} |
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130
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131
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0
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$dbh->commit(); |
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132
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} catch { |
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133
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0
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0
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0
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my $error = (defined($_) ? $_ : "unknown"); |
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134
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0
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logger->error("error fetching from session: ${error}"); |
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135
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136
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0
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$dbh->rollback(); |
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137
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0
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}; |
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138
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139
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0
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return; |
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140
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} |
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141
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142
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sub remove { |
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143
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0
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0
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1
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my ($self, $session_id) = @_; |
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144
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0
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my $dbh = $self->handle(); |
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145
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146
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try { |
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147
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0
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0
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my $table = $self->{'_table'}; |
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148
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0
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my $sth = $dbh->prepare_cached("DELETE FROM ${table} WHERE id = ?"); |
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149
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0
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$sth->execute($session_id); |
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150
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0
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$sth->finish(); |
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151
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152
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0
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$dbh->commit(); |
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153
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} catch { |
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154
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0
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0
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0
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my $error = (defined($_) ? $_ : "unknown"); |
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155
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0
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logger->error("error fetching from session: ${error}"); |
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156
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157
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0
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$dbh->rollback(); |
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158
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0
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}; |
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159
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160
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0
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return; |
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161
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} |
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162
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163
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1; |
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164
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