135 lines
3.1 KiB
Perl
135 lines
3.1 KiB
Perl
package Lemonldap::NG::Common::Conf::_DBI;
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use strict;
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use DBI;
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use Lemonldap::NG::Common::Conf::Constants; #inherits
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our $VERSION = '1.0.0';
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our @ISA = qw(Lemonldap::NG::Common::Conf::Constants);
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our ( @EXPORT, %EXPORT_TAGS );
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BEGIN {
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*Lemonldap::NG::Common::Conf::_dbh = \&_dbh;
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*EXPORT = \@Lemonldap::NG::Common::Conf::Constants::EXPORT;
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*EXPORT_TAGS = \%Lemonldap::NG::Common::Conf::Constants::EXPORT_TAGS;
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push @EXPORT,
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qw(prereq available lastCfg _dbh lock isLocked unlock delete logError);
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}
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sub prereq {
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my $self = shift;
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unless ( $self->{dbiChain} ) {
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$Lemonldap::NG::Common::Conf::msg =
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'"dbiChain" is required in *DBI configuration type';
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return 0;
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}
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print STDERR __PACKAGE__ . 'Warning: "dbiUser" parameter is not set'
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unless ( $self->{dbiUser} );
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$self->{dbiTable} ||= "lmConfig";
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1;
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}
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sub available {
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my $self = shift;
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my $sth =
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$self->_dbh->prepare( "SELECT DISTINCT cfgNum from "
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. $self->{dbiTable}
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. " order by cfgNum" );
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$sth->execute();
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my @conf;
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while ( my @row = $sth->fetchrow_array ) {
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push @conf, $row[0];
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}
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return @conf;
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}
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sub lastCfg {
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my $self = shift;
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my @row = $self->_dbh->selectrow_array(
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"SELECT max(cfgNum) from " . $self->{dbiTable} );
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return $row[0];
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}
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sub _dbh {
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my $self = shift;
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$self->{dbiTable} ||= "lmConfig";
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return $self->{_dbh} if ( $self->{_dbh} and $self->{_dbh}->ping );
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return DBI->connect_cached( $self->{dbiChain}, $self->{dbiUser},
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$self->{dbiPassword}, { RaiseError => 1, AutoCommit => 1, } );
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}
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sub lock {
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my $self = shift;
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my $sth;
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if ( $self->{dbiChain} =~ /mysql/i ) {
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eval {
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$sth =
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$self->dbh->prepare_cached( q{SELECT GET_LOCK(?, 5)}, {}, 1 );
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$sth->execute('lmconf');
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my @row = $sth->fetchrow_array;
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return $row[0] || 0;
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};
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return 1;
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}
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else {
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# TODO
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return 1;
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}
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}
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sub isLocked {
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my $self = shift;
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my $sth;
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if ( $self->{dbiChain} =~ /^dbi:mysql:/i ) {
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eval {
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$sth =
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$self->_dbh->prepare_cached( q{SELECT IS_FREE_LOCK(?)}, {}, 1 );
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$sth->execute('lmconf');
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my @row = $sth->fetchrow_array;
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return $row[0] ? 0 : 1;
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};
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return 0;
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}
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else {
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# TODO
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return 0;
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}
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}
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sub unlock {
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my $self = shift;
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my $sth;
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if ( $self->{dbiChain} =~ /^dbi:mysql:/i ) {
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eval {
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$sth =
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$self->_dbh->prepare_cached( q{SELECT RELEASE_LOCK(?)}, {}, 1 );
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$sth->execute('lmconf');
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my @row = $sth->fetchrow_array;
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return $row[0] || 0;
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};
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return 1;
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}
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else {
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# TODO
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return 1;
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}
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}
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sub delete {
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my ( $self, $cfgNum ) = @_;
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$self->_dbh->do(
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"DELETE from " . $self->{dbiTable} . " WHERE cfgNum=$cfgNum" );
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}
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sub logError {
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my $self = shift;
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$Lemonldap::NG::Common::Conf::msg .=
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"Database error: " . $self->_dbh->errstr . "\n";
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}
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1;
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__END__
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