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package Redis; |
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|
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use warnings; |
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use strict; |
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|
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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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|
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=head1 NAME |
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|
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Redis - The great new Redis! |
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|
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=cut |
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|
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our $VERSION = '0.01'; |
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|
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|
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=head1 SYNOPSIS |
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|
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Pure perl bindings for L<http://code.google.com/p/redis/> |
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|
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use Redis; |
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|
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my $r = Redis->new(); |
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|
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|
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|
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|
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=head1 FUNCTIONS |
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|
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=head2 new |
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|
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=cut |
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|
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our $sock; |
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my $server = '127.0.0.1:6379'; |
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|
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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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|
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warn "# opening socket to $server"; |
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|
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$sock ||= IO::Socket::INET->new( |
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PeerAddr => $server, |
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Proto => 'tcp', |
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) || die $!; |
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|
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$self; |
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} |
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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( $result ); |
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$result =~ s{\r\n$}{} || warn "can't find cr/lf"; |
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return $result; |
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} |
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|
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sub _sock_result_bulk { |
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my $len = <$sock>; |
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warn "# len: ",dump($len); |
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return undef if $len eq "nil\r\n"; |
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my $v; |
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read($sock, $v, $len) || die $!; |
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warn "# v: ",dump($v); |
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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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|
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sub _sock_ok { |
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my $ok = <$sock>; |
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confess dump($ok) unless $ok eq "+OK\r\n"; |
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} |
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|
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sub _sock_send { |
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my $self = shift; |
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print $sock join(' ',@_) . "\r\n"; |
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_sock_result(); |
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} |
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|
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sub _sock_send_bulk { |
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my ( $self, $command, $key, $value ) = @_; |
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print $sock "$command $key " . length($value) . "\r\n$value\r\n"; |
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_sock_ok(); |
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} |
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|
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|
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=head1 Connection Handling |
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|
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=head2 quit |
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|
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$r->quit; |
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|
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=cut |
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|
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sub quit { |
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my $self = shift; |
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|
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close( $sock ) || warn $!; |
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} |
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|
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=head2 ping |
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|
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$r->ping || die "no server?"; |
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|
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=cut |
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|
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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 $pong eq "+PONG\r\n"; |
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} |
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|
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=head1 Commands operating on string values |
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|
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=head2 set |
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|
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$r->set( foo => 'bar', $new ); |
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|
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=cut |
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|
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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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|
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=head2 get |
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|
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my $value = $r->get( 'foo' ); |
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|
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=cut |
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|
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sub get { |
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my ( $self, $k ) = @_; |
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print $sock "GET $k\r\n"; |
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_sock_result_bulk(); |
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} |
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|
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=head2 incr |
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|
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$r->incr('counter'); |
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$r->incr('tripplets', 3); |
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|
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=cut |
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|
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|
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|
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sub incr { |
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my ( $self, $key, $value ) = @_; |
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if ( defined $value ) { |
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print $sock "INCRBY $key $value\r\n"; |
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} else { |
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print $sock "INCR $key\r\n"; |
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} |
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_sock_result(); |
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} |
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|
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=head2 decr |
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|
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$r->decr('counter'); |
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$r->decr('tripplets', 3); |
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|
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=cut |
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|
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sub decr { |
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my ( $self, $key, $value ) = @_; |
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if ( defined $value ) { |
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print $sock "DECRBY $key $value\r\n"; |
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} else { |
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print $sock "DECR $key\r\n"; |
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} |
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_sock_result(); |
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} |
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|
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=head2 exists |
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|
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$r->exists( 'key' ) && print "got key!"; |
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|
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=cut |
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|
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sub exists { |
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my ( $self, $key ) = @_; |
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print $sock "EXISTS $key\r\n"; |
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_sock_result(); |
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} |
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|
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=head2 del |
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|
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$r->del( 'key' ) || warn "key doesn't exist"; |
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|
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=cut |
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|
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sub del { |
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my ( $self, $key ) = @_; |
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print $sock "DEL $key\r\n"; |
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_sock_result(); |
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} |
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|
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=head2 type |
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|
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$r->type( 'key' ); # = string |
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|
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=cut |
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|
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sub type { |
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my ( $self, $key ) = @_; |
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print $sock "TYPE $key\r\n"; |
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_sock_result(); |
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} |
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|
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=head1 Commands operating on the key space |
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|
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=head2 keys |
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|
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my @keys = $r->keys( '*glob_pattern*' ); |
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|
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=cut |
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|
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sub keys { |
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my ( $self, $glob ) = @_; |
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print $sock "KEYS $glob\r\n"; |
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return split(/\s/, _sock_result_bulk()); |
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} |
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|
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=head2 randomkey |
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|
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my $key = $r->randomkey; |
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|
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=cut |
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|
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sub randomkey { |
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my ( $self ) = @_; |
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print $sock "RANDOMKEY\r\n"; |
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_sock_result(); |
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} |
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|
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=head2 rename |
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|
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my $ok = $r->rename( 'old-key', 'new-key', $new ); |
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|
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=cut |
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|
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sub rename { |
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my ( $self, $old, $new, $nx ) = @_; |
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print $sock "RENAME" . ( $nx ? 'NX' : '' ) . " $old $new\r\n"; |
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_sock_ok(); |
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} |
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|
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=head2 dbsize |
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|
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my $nr_keys = $r->dbsize; |
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|
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=cut |
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|
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sub dbsize { |
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my ( $self ) = @_; |
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print $sock "DBSIZE\r\n"; |
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_sock_result(); |
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} |
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|
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=head1 Commands operating on lists |
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|
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=head2 rpush |
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|
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$r->rpush( $key, $value ); |
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|
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=cut |
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|
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sub rpush { |
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my ( $self, $key, $value ) = @_; |
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$self->_sock_send_bulk('RPUSH', $key, $value); |
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} |
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|
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=head2 lpush |
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|
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$r->lpush( $key, $value ); |
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|
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=cut |
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|
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sub lpush { |
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my ( $self, $key, $value ) = @_; |
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$self->_sock_send_bulk('LPUSH', $key, $value); |
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} |
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|
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=head2 llen |
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|
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$r->llen( $key ); |
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|
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=cut |
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|
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sub llen { |
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my ( $self, $key ) = @_; |
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$self->_sock_send( 'llen', $key ); |
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} |
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|
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=head1 AUTHOR |
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|
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Dobrica Pavlinusic, C<< <dpavlin at rot13.org> >> |
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|
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=head1 BUGS |
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|
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Please report any bugs or feature requests to C<bug-redis at rt.cpan.org>, or through |
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the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Redis>. I will be notified, and then you'll |
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automatically be notified of progress on your bug as I make changes. |
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|
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|
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|
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|
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=head1 SUPPORT |
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|
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You can find documentation for this module with the perldoc command. |
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|
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perldoc Redis |
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|
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|
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You can also look for information at: |
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|
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=over 4 |
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|
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=item * RT: CPAN's request tracker |
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|
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L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Redis> |
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|
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=item * AnnoCPAN: Annotated CPAN documentation |
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|
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L<http://annocpan.org/dist/Redis> |
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|
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=item * CPAN Ratings |
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|
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L<http://cpanratings.perl.org/d/Redis> |
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|
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=item * Search CPAN |
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|
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L<http://search.cpan.org/dist/Redis> |
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|
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=back |
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|
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|
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=head1 ACKNOWLEDGEMENTS |
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|
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|
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=head1 COPYRIGHT & LICENSE |
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|
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Copyright 2009 Dobrica Pavlinusic, all rights reserved. |
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|
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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|
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|
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=cut |
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|
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1; # End of Redis |
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