1 |
package Redis; |
2 |
|
3 |
use warnings; |
4 |
use strict; |
5 |
|
6 |
use IO::Socket::INET; |
7 |
use Data::Dump qw/dump/; |
8 |
use Carp qw/confess/; |
9 |
|
10 |
=head1 NAME |
11 |
|
12 |
Redis - The great new Redis! |
13 |
|
14 |
=cut |
15 |
|
16 |
our $VERSION = '0.01'; |
17 |
|
18 |
|
19 |
=head1 SYNOPSIS |
20 |
|
21 |
Pure perl bindings for L<http://code.google.com/p/redis/> |
22 |
|
23 |
use Redis; |
24 |
|
25 |
my $r = Redis->new(); |
26 |
|
27 |
|
28 |
|
29 |
|
30 |
=head1 FUNCTIONS |
31 |
|
32 |
=head2 new |
33 |
|
34 |
=cut |
35 |
|
36 |
our $sock; |
37 |
my $server = '127.0.0.1:6379'; |
38 |
|
39 |
sub new { |
40 |
my $class = shift; |
41 |
my $self = {}; |
42 |
bless($self, $class); |
43 |
|
44 |
warn "# opening socket to $server"; |
45 |
|
46 |
$sock ||= IO::Socket::INET->new( |
47 |
PeerAddr => $server, |
48 |
Proto => 'tcp', |
49 |
) || die $!; |
50 |
|
51 |
$self; |
52 |
} |
53 |
|
54 |
sub _sock_result { |
55 |
my $result = <$sock>; |
56 |
warn "# result: ",dump( $result ); |
57 |
$result =~ s{\r\n$}{} || warn "can't find cr/lf"; |
58 |
return $result; |
59 |
} |
60 |
|
61 |
sub _sock_result_bulk { |
62 |
my $len = <$sock>; |
63 |
warn "# len: ",dump($len); |
64 |
return undef if $len eq "nil\r\n"; |
65 |
my $v; |
66 |
read($sock, $v, $len) || die $!; |
67 |
warn "# v: ",dump($v); |
68 |
my $crlf; |
69 |
read($sock, $crlf, 2); # skip cr/lf |
70 |
return $v; |
71 |
} |
72 |
|
73 |
sub _sock_ok { |
74 |
my $ok = <$sock>; |
75 |
confess dump($ok) unless $ok eq "+OK\r\n"; |
76 |
} |
77 |
|
78 |
=head1 Connection Handling |
79 |
|
80 |
=head2 quit |
81 |
|
82 |
$r->quit; |
83 |
|
84 |
=cut |
85 |
|
86 |
sub quit { |
87 |
my $self = shift; |
88 |
|
89 |
close( $sock ) || warn $!; |
90 |
} |
91 |
|
92 |
=head2 ping |
93 |
|
94 |
$r->ping || die "no server?"; |
95 |
|
96 |
=cut |
97 |
|
98 |
sub ping { |
99 |
print $sock "PING\r\n"; |
100 |
my $pong = <$sock>; |
101 |
die "ping failed, got ", dump($pong) unless $pong eq "+PONG\r\n"; |
102 |
} |
103 |
|
104 |
=head1 Commands operating on string values |
105 |
|
106 |
=head2 set |
107 |
|
108 |
$r->set( foo => 'bar', $new ); |
109 |
|
110 |
=cut |
111 |
|
112 |
sub set { |
113 |
my ( $self, $k, $v, $new ) = @_; |
114 |
print $sock ( $new ? "SETNX" : "SET" ) . " $k " . length($v) . "\r\n$v\r\n"; |
115 |
_sock_ok(); |
116 |
} |
117 |
|
118 |
=head2 get |
119 |
|
120 |
my $value = $r->get( 'foo' ); |
121 |
|
122 |
=cut |
123 |
|
124 |
sub get { |
125 |
my ( $self, $k ) = @_; |
126 |
print $sock "GET $k\r\n"; |
127 |
_sock_result_bulk(); |
128 |
} |
129 |
|
130 |
=head2 incr |
131 |
|
132 |
$r->incr('counter'); |
133 |
$r->incr('tripplets', 3); |
134 |
|
135 |
=cut |
136 |
|
137 |
|
138 |
|
139 |
sub incr { |
140 |
my ( $self, $key, $value ) = @_; |
141 |
if ( defined $value ) { |
142 |
print $sock "INCRBY $key $value\r\n"; |
143 |
} else { |
144 |
print $sock "INCR $key\r\n"; |
145 |
} |
146 |
_sock_result(); |
147 |
} |
148 |
|
149 |
=head2 decr |
150 |
|
151 |
$r->decr('counter'); |
152 |
$r->decr('tripplets', 3); |
153 |
|
154 |
=cut |
155 |
|
156 |
sub decr { |
157 |
my ( $self, $key, $value ) = @_; |
158 |
if ( defined $value ) { |
159 |
print $sock "DECRBY $key $value\r\n"; |
160 |
} else { |
161 |
print $sock "DECR $key\r\n"; |
162 |
} |
163 |
_sock_result(); |
164 |
} |
165 |
|
166 |
=head2 exists |
167 |
|
168 |
$r->exists( 'key' ) && print "got key!"; |
169 |
|
170 |
=cut |
171 |
|
172 |
sub exists { |
173 |
my ( $self, $key ) = @_; |
174 |
print $sock "EXISTS $key\r\n"; |
175 |
_sock_result(); |
176 |
} |
177 |
|
178 |
=head2 del |
179 |
|
180 |
$r->del( 'key' ) || warn "key doesn't exist"; |
181 |
|
182 |
=cut |
183 |
|
184 |
sub del { |
185 |
my ( $self, $key ) = @_; |
186 |
print $sock "DEL $key\r\n"; |
187 |
_sock_result(); |
188 |
} |
189 |
|
190 |
=head2 type |
191 |
|
192 |
$r->type( 'key' ); # = string |
193 |
|
194 |
=cut |
195 |
|
196 |
sub type { |
197 |
my ( $self, $key ) = @_; |
198 |
print $sock "TYPE $key\r\n"; |
199 |
_sock_result(); |
200 |
} |
201 |
|
202 |
=head1 Commands operating on the key space |
203 |
|
204 |
=head2 keys |
205 |
|
206 |
my @keys = $r->keys( '*glob_pattern*' ); |
207 |
|
208 |
=cut |
209 |
|
210 |
sub keys { |
211 |
my ( $self, $glob ) = @_; |
212 |
print $sock "KEYS $glob\r\n"; |
213 |
return split(/\s/, _sock_result_bulk()); |
214 |
} |
215 |
|
216 |
=head2 randomkey |
217 |
|
218 |
my $key = $r->randomkey; |
219 |
|
220 |
=cut |
221 |
|
222 |
sub randomkey { |
223 |
my ( $self ) = @_; |
224 |
print $sock "RANDOMKEY\r\n"; |
225 |
_sock_result(); |
226 |
} |
227 |
|
228 |
=head2 rename |
229 |
|
230 |
my $ok = $r->rename( 'old-key', 'new-key', $only_if_new ); |
231 |
|
232 |
=cut |
233 |
|
234 |
sub rename { |
235 |
my ( $self, $old, $new, $nx ) = @_; |
236 |
print $sock "RENAME" . ( $nx ? 'NX' : '' ) . " $old $new\r\n"; |
237 |
_sock_ok(); |
238 |
} |
239 |
|
240 |
=head1 AUTHOR |
241 |
|
242 |
Dobrica Pavlinusic, C<< <dpavlin at rot13.org> >> |
243 |
|
244 |
=head1 BUGS |
245 |
|
246 |
Please report any bugs or feature requests to C<bug-redis at rt.cpan.org>, or through |
247 |
the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Redis>. I will be notified, and then you'll |
248 |
automatically be notified of progress on your bug as I make changes. |
249 |
|
250 |
|
251 |
|
252 |
|
253 |
=head1 SUPPORT |
254 |
|
255 |
You can find documentation for this module with the perldoc command. |
256 |
|
257 |
perldoc Redis |
258 |
|
259 |
|
260 |
You can also look for information at: |
261 |
|
262 |
=over 4 |
263 |
|
264 |
=item * RT: CPAN's request tracker |
265 |
|
266 |
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Redis> |
267 |
|
268 |
=item * AnnoCPAN: Annotated CPAN documentation |
269 |
|
270 |
L<http://annocpan.org/dist/Redis> |
271 |
|
272 |
=item * CPAN Ratings |
273 |
|
274 |
L<http://cpanratings.perl.org/d/Redis> |
275 |
|
276 |
=item * Search CPAN |
277 |
|
278 |
L<http://search.cpan.org/dist/Redis> |
279 |
|
280 |
=back |
281 |
|
282 |
|
283 |
=head1 ACKNOWLEDGEMENTS |
284 |
|
285 |
|
286 |
=head1 COPYRIGHT & LICENSE |
287 |
|
288 |
Copyright 2009 Dobrica Pavlinusic, all rights reserved. |
289 |
|
290 |
This program is free software; you can redistribute it and/or modify it |
291 |
under the same terms as Perl itself. |
292 |
|
293 |
|
294 |
=cut |
295 |
|
296 |
1; # End of Redis |