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dpavlin |
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package Redis; |
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use warnings; |
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use strict; |
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use IO::Socket::INET; |
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use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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=head1 NAME |
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Redis - perl binding for Redis database |
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=cut |
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our $VERSION = '0.01'; |
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=head1 SYNOPSIS |
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dpavlin |
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Pure perl bindings for L<http://code.google.com/p/redis/> |
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This version support git version of Redis available at |
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L<git://github.com/antirez/redis> |
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use Redis; |
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my $r = Redis->new(); |
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=head1 FUNCTIONS |
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=head2 new |
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=cut |
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our $debug = $ENV{REDIS} || 0; |
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our $sock; |
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my $server = '127.0.0.1:6379'; |
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sub new { |
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my $class = shift; |
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my $self = {}; |
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bless($self, $class); |
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warn "# opening socket to $server"; |
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$sock ||= IO::Socket::INET->new( |
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PeerAddr => $server, |
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Proto => 'tcp', |
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) || die $!; |
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$self; |
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} |
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sub _sock_result { |
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my $result = <$sock>; |
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warn "## result: ",dump( $result ) if $debug; |
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$result =~ s{\r\n$}{} || warn "can't find cr/lf"; |
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return $result; |
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} |
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sub _sock_read_bulk { |
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my $len = <$sock>; |
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warn "## bulk len: ",dump($len) if $debug; |
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return undef if $len eq "nil\r\n"; |
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my $v; |
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if ( $len > 0 ) { |
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read($sock, $v, $len) || die $!; |
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warn "## bulk v: ",dump($v) if $debug; |
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} |
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my $crlf; |
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read($sock, $crlf, 2); # skip cr/lf |
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return $v; |
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} |
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sub _sock_result_bulk { |
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my $self = shift; |
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warn "## _sock_result_bulk ",dump( @_ ) if $debug; |
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print $sock join(' ',@_) . "\r\n"; |
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_sock_read_bulk(); |
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} |
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sub _sock_result_bulk_list { |
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my $self = shift; |
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warn "## _sock_result_bulk_list ",dump( @_ ) if $debug; |
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my $size = $self->_sock_send( @_ ); |
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confess $size unless $size > 0; |
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$size--; |
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my @list = ( 0 .. $size ); |
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foreach ( 0 .. $size ) { |
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$list[ $_ ] = _sock_read_bulk(); |
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} |
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warn "## list = ", dump( @list ) if $debug; |
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return @list; |
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} |
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sub __sock_ok { |
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my $ok = <$sock>; |
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return undef if $ok eq "nil\r\n"; |
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confess dump($ok) unless $ok eq "+OK\r\n"; |
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} |
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sub _sock_send { |
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my $self = shift; |
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warn "## _sock_send ",dump( @_ ) if $debug; |
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print $sock join(' ',@_) . "\r\n"; |
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_sock_result(); |
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} |
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sub _sock_send_ok { |
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my $self = shift; |
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warn "## _sock_send_ok ",dump( @_ ) if $debug; |
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print $sock join(' ',@_) . "\r\n"; |
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__sock_ok(); |
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} |
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sub __sock_send_bulk_raw { |
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my $self = shift; |
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warn "## _sock_send_bulk ",dump( @_ ) if $debug; |
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my $value = pop; |
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$value = '' unless defined $value; # FIXME errr? nil? |
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print $sock join(' ',@_) . ' ' . length($value) . "\r\n$value\r\n" |
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} |
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sub _sock_send_bulk { |
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__sock_send_bulk_raw( @_ ); |
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__sock_ok(); |
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} |
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sub _sock_send_bulk_number { |
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__sock_send_bulk_raw( @_ ); |
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my $v = _sock_result(); |
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confess $v unless $v =~ m{^\-?\d+$}; |
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return $v; |
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} |
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=head1 Connection Handling |
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=head2 quit |
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$r->quit; |
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=cut |
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sub quit { |
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my $self = shift; |
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close( $sock ) || warn $!; |
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} |
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=head2 ping |
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$r->ping || die "no server?"; |
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=cut |
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sub ping { |
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print $sock "PING\r\n"; |
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my $pong = <$sock>; |
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die "ping failed, got ", dump($pong) unless $pong eq "+PONG\r\n"; |
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} |
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=head1 Commands operating on string values |
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=head2 set |
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$r->set( foo => 'bar', $new ); |
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=cut |
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sub set { |
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my ( $self, $key, $value, $new ) = @_; |
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$self->_sock_send_bulk( "SET" . ( $new ? 'NX' : '' ), $key, $value ); |
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} |
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=head2 get |
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my $value = $r->get( 'foo' ); |
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=cut |
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sub get { |
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my $self = shift; |
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$self->_sock_result_bulk('GET', @_); |
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} |
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=head2 incr |
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$r->incr('counter'); |
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$r->incr('tripplets', 3); |
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=cut |
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sub incr { |
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my $self = shift; |
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$self->_sock_send( 'INCR' . ( $#_ ? 'BY' : '' ), @_ ); |
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} |
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=head2 decr |
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$r->decr('counter'); |
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$r->decr('tripplets', 3); |
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=cut |
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sub decr { |
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my $self = shift; |
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$self->_sock_send( 'DECR' . ( $#_ ? 'BY' : '' ), @_ ); |
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} |
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=head2 exists |
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$r->exists( 'key' ) && print "got key!"; |
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=cut |
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sub exists { |
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my ( $self, $key ) = @_; |
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$self->_sock_send( 'EXISTS', $key ); |
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} |
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=head2 del |
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$r->del( 'key' ) || warn "key doesn't exist"; |
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=cut |
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sub del { |
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my ( $self, $key ) = @_; |
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$self->_sock_send( 'DEL', $key ); |
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} |
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=head2 type |
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$r->type( 'key' ); # = string |
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=cut |
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sub type { |
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my ( $self, $key ) = @_; |
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$self->_sock_send( 'TYPE', $key ); |
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} |
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=head1 Commands operating on the key space |
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=head2 keys |
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my @keys = $r->keys( '*glob_pattern*' ); |
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=cut |
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sub keys { |
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my ( $self, $glob ) = @_; |
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return split(/\s/, $self->_sock_result_bulk( 'KEYS', $glob )); |
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} |
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=head2 randomkey |
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my $key = $r->randomkey; |
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=cut |
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sub randomkey { |
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my ( $self ) = @_; |
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$self->_sock_send( 'RANDOMKEY' ); |
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} |
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=head2 rename |
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my $ok = $r->rename( 'old-key', 'new-key', $new ); |
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=cut |
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sub rename { |
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my ( $self, $old, $new, $nx ) = @_; |
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$self->_sock_send_ok( 'RENAME' . ( $nx ? 'NX' : '' ), $old, $new ); |
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} |
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dpavlin |
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=head2 dbsize |
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my $nr_keys = $r->dbsize; |
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=cut |
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sub dbsize { |
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my ( $self ) = @_; |
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$self->_sock_send('DBSIZE'); |
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} |
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dpavlin |
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=head1 Commands operating on lists |
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dpavlin |
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See also L<Redis::List> for tie interface. |
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dpavlin |
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=head2 rpush |
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$r->rpush( $key, $value ); |
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=cut |
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sub rpush { |
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my ( $self, $key, $value ) = @_; |
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$self->_sock_send_bulk('RPUSH', $key, $value); |
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} |
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dpavlin |
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=head2 lpush |
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$r->lpush( $key, $value ); |
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=cut |
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sub lpush { |
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my ( $self, $key, $value ) = @_; |
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$self->_sock_send_bulk('LPUSH', $key, $value); |
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} |
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dpavlin |
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=head2 llen |
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$r->llen( $key ); |
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=cut |
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sub llen { |
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my ( $self, $key ) = @_; |
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dpavlin |
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$self->_sock_send( 'LLEN', $key ); |
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dpavlin |
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} |
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=head2 lrange |
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my @list = $r->lrange( $key, $start, $end ); |
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=cut |
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sub lrange { |
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my ( $self, $key, $start, $end ) = @_; |
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dpavlin |
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$self->_sock_result_bulk_list('LRANGE', $key, $start, $end); |
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dpavlin |
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} |
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dpavlin |
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=head2 ltrim |
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my $ok = $r->ltrim( $key, $start, $end ); |
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=cut |
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sub ltrim { |
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my ( $self, $key, $start, $end ) = @_; |
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$self->_sock_send_ok( 'LTRIM', $key, $start, $end ); |
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} |
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dpavlin |
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=head2 lindex |
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$r->lindex( $key, $index ); |
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=cut |
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sub lindex { |
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my ( $self, $key, $index ) = @_; |
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dpavlin |
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$self->_sock_result_bulk( 'LINDEX', $key, $index ); |
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dpavlin |
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} |
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dpavlin |
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=head2 lset |
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dpavlin |
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dpavlin |
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$r->lset( $key, $index, $value ); |
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=cut |
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sub lset { |
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my ( $self, $key, $index, $value ) = @_; |
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$self->_sock_send_bulk( 'LSET', $key, $index, $value ); |
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} |
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dpavlin |
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=head2 lrem |
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dpavlin |
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my $modified_count = $r->lrem( $key, $count, $value ); |
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dpavlin |
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=cut |
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sub lrem { |
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my ( $self, $key, $count, $value ) = @_; |
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$self->_sock_send_bulk_number( 'LREM', $key, $count, $value ); |
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} |
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dpavlin |
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=head2 lpop |
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my $value = $r->lpop( $key ); |
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=cut |
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sub lpop { |
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my ( $self, $key ) = @_; |
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dpavlin |
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$self->_sock_result_bulk( 'LPOP', $key ); |
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dpavlin |
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} |
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=head2 rpop |
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my $value = $r->rpop( $key ); |
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=cut |
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sub rpop { |
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my ( $self, $key ) = @_; |
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dpavlin |
30 |
$self->_sock_result_bulk( 'RPOP', $key ); |
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dpavlin |
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} |
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dpavlin |
30 |
=head1 Commands operating on sets |
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=head2 sadd |
413 |
|
|
|
414 |
|
|
$r->sadd( $key, $member ); |
415 |
|
|
|
416 |
|
|
=cut |
417 |
|
|
|
418 |
|
|
sub sadd { |
419 |
|
|
my ( $self, $key, $member ) = @_; |
420 |
|
|
$self->_sock_send_bulk_number( 'SADD', $key, $member ); |
421 |
|
|
} |
422 |
|
|
|
423 |
|
|
=head2 srem |
424 |
|
|
|
425 |
|
|
$r->srem( $key, $member ); |
426 |
|
|
|
427 |
|
|
=cut |
428 |
|
|
|
429 |
|
|
sub srem { |
430 |
|
|
my ( $self, $key, $member ) = @_; |
431 |
|
|
$self->_sock_send_bulk_number( 'SREM', $key, $member ); |
432 |
|
|
} |
433 |
|
|
|
434 |
dpavlin |
31 |
=head2 scard |
435 |
|
|
|
436 |
|
|
my $elements = $r->scard( $key ); |
437 |
|
|
|
438 |
|
|
=cut |
439 |
|
|
|
440 |
|
|
sub scard { |
441 |
|
|
my ( $self, $key ) = @_; |
442 |
|
|
$self->_sock_send( 'SCARD', $key ); |
443 |
|
|
} |
444 |
|
|
|
445 |
dpavlin |
32 |
=head2 sismember |
446 |
|
|
|
447 |
|
|
$r->sismember( $key, $member ); |
448 |
|
|
|
449 |
|
|
=cut |
450 |
|
|
|
451 |
|
|
sub sismember { |
452 |
|
|
my ( $self, $key, $member ) = @_; |
453 |
|
|
$self->_sock_send_bulk_number( 'SISMEMBER', $key, $member ); |
454 |
|
|
} |
455 |
|
|
|
456 |
dpavlin |
33 |
=head2 sinter |
457 |
|
|
|
458 |
|
|
$r->sinter( $key1, $key2, ... ); |
459 |
|
|
|
460 |
|
|
=cut |
461 |
|
|
|
462 |
|
|
sub sinter { |
463 |
|
|
my $self = shift; |
464 |
|
|
$self->_sock_result_bulk_list( 'SINTER', @_ ); |
465 |
|
|
} |
466 |
|
|
|
467 |
dpavlin |
34 |
=head2 sinterstore |
468 |
|
|
|
469 |
|
|
my $ok = $r->sinterstore( $dstkey, $key1, $key2, ... ); |
470 |
|
|
|
471 |
|
|
=cut |
472 |
|
|
|
473 |
|
|
sub sinterstore { |
474 |
|
|
my $self = shift; |
475 |
|
|
$self->_sock_send_ok( 'SINTERSTORE', @_ ); |
476 |
|
|
} |
477 |
|
|
|
478 |
dpavlin |
38 |
=head1 Multiple databases handling commands |
479 |
|
|
|
480 |
|
|
=head2 select |
481 |
|
|
|
482 |
|
|
$r->select( 1 ); |
483 |
|
|
|
484 |
|
|
=cut |
485 |
|
|
|
486 |
|
|
sub select { |
487 |
|
|
my ($self,$index) = @_; |
488 |
|
|
$self->_sock_send_ok( 'SELECT', $index ); |
489 |
|
|
} |
490 |
|
|
|
491 |
dpavlin |
1 |
=head1 AUTHOR |
492 |
|
|
|
493 |
|
|
Dobrica Pavlinusic, C<< <dpavlin at rot13.org> >> |
494 |
|
|
|
495 |
|
|
=head1 BUGS |
496 |
|
|
|
497 |
|
|
Please report any bugs or feature requests to C<bug-redis at rt.cpan.org>, or through |
498 |
|
|
the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Redis>. I will be notified, and then you'll |
499 |
|
|
automatically be notified of progress on your bug as I make changes. |
500 |
|
|
|
501 |
|
|
|
502 |
|
|
|
503 |
|
|
|
504 |
|
|
=head1 SUPPORT |
505 |
|
|
|
506 |
|
|
You can find documentation for this module with the perldoc command. |
507 |
|
|
|
508 |
|
|
perldoc Redis |
509 |
|
|
|
510 |
|
|
|
511 |
|
|
You can also look for information at: |
512 |
|
|
|
513 |
|
|
=over 4 |
514 |
|
|
|
515 |
|
|
=item * RT: CPAN's request tracker |
516 |
|
|
|
517 |
|
|
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Redis> |
518 |
|
|
|
519 |
|
|
=item * AnnoCPAN: Annotated CPAN documentation |
520 |
|
|
|
521 |
|
|
L<http://annocpan.org/dist/Redis> |
522 |
|
|
|
523 |
|
|
=item * CPAN Ratings |
524 |
|
|
|
525 |
|
|
L<http://cpanratings.perl.org/d/Redis> |
526 |
|
|
|
527 |
|
|
=item * Search CPAN |
528 |
|
|
|
529 |
|
|
L<http://search.cpan.org/dist/Redis> |
530 |
|
|
|
531 |
|
|
=back |
532 |
|
|
|
533 |
|
|
|
534 |
|
|
=head1 ACKNOWLEDGEMENTS |
535 |
|
|
|
536 |
|
|
|
537 |
|
|
=head1 COPYRIGHT & LICENSE |
538 |
|
|
|
539 |
|
|
Copyright 2009 Dobrica Pavlinusic, all rights reserved. |
540 |
|
|
|
541 |
|
|
This program is free software; you can redistribute it and/or modify it |
542 |
|
|
under the same terms as Perl itself. |
543 |
|
|
|
544 |
|
|
|
545 |
|
|
=cut |
546 |
|
|
|
547 |
|
|
1; # End of Redis |