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use warnings; |
use warnings; |
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use strict; |
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 |
=head1 NAME |
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Redis - The great new Redis! |
Redis - The great new Redis! |
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=head1 VERSION |
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Version 0.01 |
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=cut |
=cut |
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our $VERSION = '0.01'; |
our $VERSION = '0.01'; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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Quick summary of what the module does. |
Pure perl bindings for L<http://code.google.com/p/redis/> |
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Perhaps a little code snippet. |
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use Redis; |
use Redis; |
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my $foo = Redis->new(); |
my $r = Redis->new(); |
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... |
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=head1 EXPORT |
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A list of functions that can be exported. You can delete this section |
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if you don't export anything, such as for a purely object-oriented module. |
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=head1 FUNCTIONS |
=head1 FUNCTIONS |
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=head2 function1 |
=head2 new |
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=cut |
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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( $result ); |
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$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); |
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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 $!; |
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warn "## bulk v: ",dump($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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sub _sock_result_bulk { |
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my $self = shift; |
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warn "## _sock_result_bulk ",dump( @_ ); |
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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_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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sub _sock_send { |
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my $self = shift; |
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warn "## _sock_send ",dump( @_ ); |
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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( @_ ); |
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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 { |
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my ( $self, $command, $key, $value ) = @_; |
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print $sock "$command $key " . length($value) . "\r\n$value\r\n"; |
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_sock_ok(); |
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} |
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=head1 Connection Handling |
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=head2 quit |
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$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 |
=cut |
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sub function1 { |
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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=head2 function2 |
=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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=head1 Commands operating on lists |
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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, $value); |
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} |
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=head2 lpush |
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$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, $value); |
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} |
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=head2 llen |
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$r->llen( $key ); |
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=cut |
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sub llen { |
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my ( $self, $key ) = @_; |
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$self->_sock_send( 'LLEN', $key ); |
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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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my $size = $self->_sock_send('LRANGE', $key, $start, $end); |
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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 "## lrange $key $start $end = [$size] ", dump( @list ); |
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return @list; |
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} |
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=head2 ltrim |
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my $ok = $r->ltrim( $key, $start, $end ); |
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=cut |
=cut |
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sub function2 { |
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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=head1 AUTHOR |
=head1 AUTHOR |