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#!/usr/bin/perl
use strict;
use warnings;
use Test::More tests => 3549;
use FindBin qw($Bin);
use lib "$Bin/lib";
use MemcachedTest;
my $server = new_memcached();
ok($server, "started the server");
# Based almost 100% off testClient.py which is:
# Copyright (c) 2007 Dustin Sallings <dustin@spy.net>
# Command constants
use constant CMD_GET => 0x00;
use constant CMD_SET => 0x01;
use constant CMD_ADD => 0x02;
use constant CMD_REPLACE => 0x03;
use constant CMD_DELETE => 0x04;
use constant CMD_INCR => 0x05;
use constant CMD_DECR => 0x06;
use constant CMD_QUIT => 0x07;
use constant CMD_FLUSH => 0x08;
use constant CMD_GETQ => 0x09;
use constant CMD_NOOP => 0x0A;
use constant CMD_VERSION => 0x0B;
use constant CMD_GETK => 0x0C;
use constant CMD_GETKQ => 0x0D;
use constant CMD_APPEND => 0x0E;
use constant CMD_PREPEND => 0x0F;
use constant CMD_STAT => 0x10;
use constant CMD_SETQ => 0x11;
use constant CMD_ADDQ => 0x12;
use constant CMD_REPLACEQ => 0x13;
use constant CMD_DELETEQ => 0x14;
use constant CMD_INCREMENTQ => 0x15;
use constant CMD_DECREMENTQ => 0x16;
use constant CMD_QUITQ => 0x17;
use constant CMD_FLUSHQ => 0x18;
use constant CMD_APPENDQ => 0x19;
use constant CMD_PREPENDQ => 0x1A;
use constant CMD_TOUCH => 0x1C;
use constant CMD_GAT => 0x1D;
use constant CMD_GATQ => 0x1E;
use constant CMD_GATK => 0x23;
use constant CMD_GATKQ => 0x24;
# REQ and RES formats are divided even though they currently share
# the same format, since they _could_ differ in the future.
use constant REQ_PKT_FMT => "CCnCCnNNNN";
use constant RES_PKT_FMT => "CCnCCnNNNN";
use constant INCRDECR_PKT_FMT => "NNNNN";
use constant MIN_RECV_BYTES => length(pack(RES_PKT_FMT));
use constant REQ_MAGIC => 0x80;
use constant RES_MAGIC => 0x81;
my $mc = MC::Client->new;
# Let's turn on detail stats for all this stuff
$mc->stats('detail on');
my $check = sub {
my ($key, $orig_flags, $orig_val) = @_;
my ($flags, $val, $cas) = $mc->get($key);
is($flags, $orig_flags, "Flags is set properly");
ok($val eq $orig_val || $val == $orig_val, $val . " = " . $orig_val);
};
my $set = sub {
my ($key, $exp, $orig_flags, $orig_value) = @_;
$mc->set($key, $orig_value, $orig_flags, $exp);
$check->($key, $orig_flags, $orig_value);
};
my $empty = sub {
my $key = shift;
my $rv =()= eval { $mc->get($key) };
is($rv, 0, "Didn't get a result from get");
ok($@->not_found, "We got a not found error when we expected one");
};
my $delete = sub {
my ($key, $when) = @_;
$mc->delete($key, $when);
$empty->($key);
};
# diag "Test Version";
my $v = $mc->version;
ok(defined $v && length($v), "Proper version: $v");
# Bug 71
{
my %stats1 = $mc->stats('');
$mc->flush;
my %stats2 = $mc->stats('');
is($stats2{'cmd_flush'}, $stats1{'cmd_flush'} + 1,
"Stats not updated on a binary flush");
}
# diag "Flushing...";
$mc->flush;
# diag "Noop";
$mc->noop;
# diag "Simple set/get";
$set->('x', 5, 19, "somevalue");
# diag "Delete";
$delete->('x');
# diag "Flush";
$set->('x', 5, 19, "somevaluex");
$set->('y', 5, 17, "somevaluey");
$mc->flush;
$empty->('x');
$empty->('y');
{
# diag "Add";
$empty->('i');
$mc->add('i', 'ex', 5, 10);
$check->('i', 5, "ex");
my $rv =()= eval { $mc->add('i', "ex2", 10, 5) };
is($rv, 0, "Add didn't return anything");
ok($@->exists, "Expected exists error received");
$check->('i', 5, "ex");
}
{
# diag "Too big.";
$empty->('toobig');
$mc->set('toobig', 'not too big', 10, 10);
eval {
my $bigval = ("x" x (1024*1024)) . "x";
$mc->set('toobig', $bigval, 10, 10);
};
ok($@->too_big, "Was too big");
$empty->('toobig');
}
{
# diag "Replace";
$empty->('j');
my $rv =()= eval { $mc->replace('j', "ex", 19, 5) };
is($rv, 0, "Replace didn't return anything");
ok($@->not_found, "Expected not_found error received");
$empty->('j');
$mc->add('j', "ex2", 14, 5);
$check->('j', 14, "ex2");
$mc->replace('j', "ex3", 24, 5);
$check->('j', 24, "ex3");
}
{
# diag "MultiGet";
$mc->add('xx', "ex", 1, 5);
$mc->add('wye', "why", 2, 5);
my $rv = $mc->get_multi(qw(xx wye zed));
# CAS is returned with all gets.
$rv->{xx}->[2] = 0;
$rv->{wye}->[2] = 0;
is_deeply($rv->{xx}, [1, 'ex', 0], "X is correct");
is_deeply($rv->{wye}, [2, 'why', 0], "Y is correct");
is(keys(%$rv), 2, "Got only two answers like we expect");
}
# diag "Test increment";
$mc->flush;
is($mc->incr("x"), 0, "First incr call is zero");
is($mc->incr("x"), 1, "Second incr call is one");
is($mc->incr("x", 211), 212, "Adding 211 gives you 212");
is($mc->incr("x", 2**33), 8589934804, "Blast the 32bit border");
# diag "Issue 48 - incrementing plain text.";
{
$mc->set("issue48", "text", 0, 0);
my $rv =()= eval { $mc->incr('issue48'); };
ok($@ && $@->delta_badval, "Expected invalid value when incrementing text.");
$check->('issue48', 0, "text");
$rv =()= eval { $mc->decr('issue48'); };
ok($@ && $@->delta_badval, "Expected invalid value when decrementing text.");
$check->('issue48', 0, "text");
}
# diag "Test decrement";
$mc->flush;
is($mc->incr("x", undef, 5), 5, "Initial value");
is($mc->decr("x"), 4, "Decrease by one");
is($mc->decr("x", 211), 0, "Floor is zero");
{
# diag "bug220
my ($rv, $cas) = $mc->set("bug220", "100", 0, 0);
my ($irv, $icas) = $mc->incr_cas("bug220", 999);
ok($icas != $cas);
is($irv, 1099, "Incr amount failed");
my ($flags, $val, $gcas) = $mc->get("bug220");
is($gcas, $icas, "CAS didn't match after incr/gets");
($irv, $icas) = $mc->incr_cas("bug220", 999);
ok($icas != $cas);
is($irv, 2098, "Incr amount failed");
($flags, $val, $gcas) = $mc->get("bug220");
is($gcas, $icas, "CAS didn't match after incr/gets");
}
{
# diag "bug21";
$mc->add("bug21", "9223372036854775807", 0, 0);
is($mc->incr("bug21"), 9223372036854775808, "First incr for bug21.");
is($mc->incr("bug21"), 9223372036854775809, "Second incr for bug21.");
is($mc->decr("bug21"), 9223372036854775808, "Decr for bug21.");
}
{
# diag "CAS";
$mc->flush;
{
my $rv =()= eval { $mc->set("x", "bad value", 19, 5, 0x7FFFFFF) };
is($rv, 0, "Empty return on expected failure");
ok($@->not_found, "Error was 'not found' as expected");
}
my ($r, $rcas) = $mc->add("x", "original value", 5, 19);
my ($flags, $val, $i) = $mc->get("x");
is($val, "original value", "->gets returned proper value");
is($rcas, $i, "Add CAS matched.");
{
my $rv =()= eval { $mc->set("x", "broken value", 19, 5, $i+1) };
is($rv, 0, "Empty return on expected failure (1)");
ok($@->exists, "Expected error state of 'exists' (1)");
}
($r, $rcas) = $mc->set("x", "new value", 19, 5, $i);
my ($newflags, $newval, $newi) = $mc->get("x");
is($newval, "new value", "CAS properly overwrote value");
is($rcas, $newi, "Get CAS matched.");
{
my $rv =()= eval { $mc->set("x", "replay value", 19, 5, $i) };
is($rv, 0, "Empty return on expected failure (2)");
ok($@->exists, "Expected error state of 'exists' (2)");
}
}
# diag "Touch commands";
{
$mc->flush;
$mc->set("totouch", "toast", 0, 1);
my $res = $mc->touch("totouch", 10);
sleep 2;
$check->("totouch", 0, "toast");
$mc->set("totouch", "toast2", 0, 1);
my ($flags, $val, $i) = $mc->gat("totouch", 10);
is($val, "toast2", "GAT returned correct value");
sleep 2;
$check->("totouch", 0, "toast2");
# Test miss as well
$mc->set("totouch", "toast3", 0, 1);
$res = $mc->touch("totouch", 1);
sleep 3;
$empty->("totouch");
}
# diag "Silent set.";
$mc->silent_mutation(::CMD_SETQ, 'silentset', 'silentsetval');
# diag "Silent add.";
$mc->silent_mutation(::CMD_ADDQ, 'silentadd', 'silentaddval');
# diag "Silent replace.";
{
my $key = "silentreplace";
my $extra = pack "NN", 829, 0;
$empty->($key);
# $mc->send_silent(::CMD_REPLACEQ, $key, 'somevalue', 7278552, $extra, 0);
# $empty->($key);
$mc->add($key, "xval", 831, 0);
$check->($key, 831, 'xval');
$mc->send_silent(::CMD_REPLACEQ, $key, 'somevalue', 7278552, $extra, 0);
$check->($key, 829, 'somevalue');
}
# diag "Silent delete";
{
my $key = "silentdelete";
$empty->($key);
$mc->set($key, "some val", 19, 0);
$mc->send_silent(::CMD_DELETEQ, $key, '', 772);
$empty->($key);
}
# diag "Silent increment";
{
my $key = "silentincr";
my $opaque = 98428747;
$empty->($key);
$mc->silent_incrdecr(::CMD_INCREMENTQ, $key, 0, 0, 0);
is($mc->incr($key, 0), 0, "First call is 0");
$mc->silent_incrdecr(::CMD_INCREMENTQ, $key, 8, 0, 0);
is($mc->incr($key, 0), 8);
}
# diag "Silent decrement";
{
my $key = "silentdecr";
my $opaque = 98428147;
$empty->($key);
$mc->silent_incrdecr(::CMD_DECREMENTQ, $key, 0, 185, 0);
is($mc->incr($key, 0), 185);
$mc->silent_incrdecr(::CMD_DECREMENTQ, $key, 8, 0, 0);
is($mc->incr($key, 0), 177);
}
# diag "Silent flush";
{
my %stats1 = $mc->stats('');
$set->('x', 5, 19, "somevaluex");
$set->('y', 5, 17, "somevaluey");
$mc->send_silent(::CMD_FLUSHQ, '', '', 2775256);
$empty->('x');
$empty->('y');
my %stats2 = $mc->stats('');
is($stats2{'cmd_flush'}, $stats1{'cmd_flush'} + 1,
"Stats not updated on a binary quiet flush");
}
# diag "Append";
{
my $key = "appendkey";
my $value = "some value";
$set->($key, 8, 19, $value);
$mc->_append_prepend(::CMD_APPEND, $key, " more");
$check->($key, 19, $value . " more");
}
# diag "Prepend";
{
my $key = "prependkey";
my $value = "some value";
$set->($key, 8, 19, $value);
$mc->_append_prepend(::CMD_PREPEND, $key, "prefixed ");
$check->($key, 19, "prefixed " . $value);
}
# diag "Silent append";
{
my $key = "appendqkey";
my $value = "some value";
$set->($key, 8, 19, $value);
$mc->send_silent(::CMD_APPENDQ, $key, " more", 7284492);
$check->($key, 19, $value . " more");
}
# diag "Silent prepend";
{
my $key = "prependqkey";
my $value = "some value";
$set->($key, 8, 19, $value);
$mc->send_silent(::CMD_PREPENDQ, $key, "prefixed ", 7284492);
$check->($key, 19, "prefixed " . $value);
}
# diag "Leaky binary get test.";
# # http://code.google.com/p/memcached/issues/detail?id=16
{
# Get a new socket so we can speak text to it.
my $sock = $server->new_sock;
my $max = 1024 * 1024;
my $big = "a big value that's > .5M and < 1M. ";
while (length($big) * 2 < $max) {
$big = $big . $big;
}
my $biglen = length($big);
for(1..100) {
my $key = "some_key_$_";
# print STDERR "Key is $key\n";
# print $sock "set $key 0 0 $vallen\r\n$value\r\n";
print $sock "set $key 0 0 $biglen\r\n$big\r\n";
is(scalar <$sock>, "STORED\r\n", "stored big");
my ($f, $v, $c) = $mc->get($key);
}
}
# diag "Test stats settings."
{
my %stats = $mc->stats('settings');
is(1024, $stats{'maxconns'});
is('NULL', $stats{'domain_socket'});
is('on', $stats{'evictions'});
is('yes', $stats{'cas_enabled'});
}
# diag "Test quit commands.";
{
my $s2 = new_memcached();
my $mc2 = MC::Client->new($s2);
$mc2->send_command(CMD_QUITQ, '', '', 0, '', 0);
# Five seconds ought to be enough to get hung up on.
my $oldalarmt = alarm(5);
# Verify we can't read anything.
my $bytesread = -1;
eval {
local $SIG{'ALRM'} = sub { die "timeout" };
my $data = "";
$bytesread = sysread($mc2->{socket}, $data, 24),
};
is($bytesread, 0, "Read after quit.");
# Restore signal stuff.
alarm($oldalarmt);
}
# diag "Test protocol boundary overruns";
{
use List::Util qw[min];
# Attempting some protocol overruns by toying around with the edge
# of the data buffer at a few different sizes. This assumes the
# boundary is at or around 2048 bytes.
for (my $i = 1900; $i < 2100; $i++) {
my $k = "test_key_$i";
my $v = 'x' x $i;
# diag "Trying $i $k";
my $extra = pack "NN", 82, 0;
my $data = $mc->build_command(::CMD_SETQ, $k, $v, 0, $extra, 0);
$data .= $mc->build_command(::CMD_SETQ, "alt_$k", "blah", 0, $extra, 0);
if (length($data) > 2024) {
for (my $j = 2024; $j < min(2096, length($data)); $j++) {
$mc->{socket}->send(substr($data, 0, $j));
$mc->flush_socket;
sleep(0.001);
$mc->{socket}->send(substr($data, $j));
$mc->flush_socket;
}
} else {
$mc->{socket}->send($data);
}
$mc->flush_socket;
$check->($k, 82, $v);
$check->("alt_$k", 82, "blah");
}
}
# Along with the assertion added to the code to verify we're staying
# within bounds when we do a stats detail dump (detail turned on at
# the top).
my %stats = $mc->stats('detail dump');
# This test causes a disconnection.
{
# diag "Key too large.";
my $key = "x" x 365;
eval {
$mc->get($key, 'should die', 10, 10);
};
ok($@->einval, "Invalid key length");
}
# ######################################################################
# Test ends around here.
# ######################################################################
package MC::Client;
use strict;
use warnings;
use fields qw(socket);
use IO::Socket::INET;
sub new {
my $self = shift;
my ($s) = @_;
$s = $server unless defined $s;
my $sock = $s->sock;
$self = fields::new($self);
$self->{socket} = $sock;
return $self;
}
sub build_command {
my $self = shift;
die "Not enough args to send_command" unless @_ >= 4;
my ($cmd, $key, $val, $opaque, $extra_header, $cas) = @_;
$extra_header = '' unless defined $extra_header;
my $keylen = length($key);
my $vallen = length($val);
my $extralen = length($extra_header);
my $datatype = 0; # field for future use
my $reserved = 0; # field for future use
my $totallen = $keylen + $vallen + $extralen;
my $ident_hi = 0;
my $ident_lo = 0;
if ($cas) {
$ident_hi = int($cas / 2 ** 32);
$ident_lo = int($cas % 2 ** 32);
}
my $msg = pack(::REQ_PKT_FMT, ::REQ_MAGIC, $cmd, $keylen, $extralen,
$datatype, $reserved, $totallen, $opaque, $ident_hi,
$ident_lo);
my $full_msg = $msg . $extra_header . $key . $val;
return $full_msg;
}
sub send_command {
my $self = shift;
die "Not enough args to send_command" unless @_ >= 4;
my ($cmd, $key, $val, $opaque, $extra_header, $cas) = @_;
my $full_msg = $self->build_command($cmd, $key, $val, $opaque, $extra_header, $cas);
my $sent = $self->{socket}->send($full_msg);
die("Send failed: $!") unless $sent;
if($sent != length($full_msg)) {
die("only sent $sent of " . length($full_msg) . " bytes");
}
}
sub flush_socket {
my $self = shift;
$self->{socket}->flush;
}
# Send a silent command and ensure it doesn't respond.
sub send_silent {
my $self = shift;
die "Not enough args to send_silent" unless @_ >= 4;
my ($cmd, $key, $val, $opaque, $extra_header, $cas) = @_;
$self->send_command($cmd, $key, $val, $opaque, $extra_header, $cas);
$self->send_command(::CMD_NOOP, '', '', $opaque + 1);
my ($ropaque, $data) = $self->_handle_single_response;
Test::More::is($ropaque, $opaque + 1);
}
sub silent_mutation {
my $self = shift;
my ($cmd, $key, $value) = @_;
$empty->($key);
my $extra = pack "NN", 82, 0;
$mc->send_silent($cmd, $key, $value, 7278552, $extra, 0);
$check->($key, 82, $value);
}
sub _handle_single_response {
my $self = shift;
my $myopaque = shift;
my $hdr = "";
while(::MIN_RECV_BYTES - length($hdr) > 0) {
$self->{socket}->recv(my $response, ::MIN_RECV_BYTES - length($hdr));
$hdr .= $response;
}
Test::More::is(length($hdr), ::MIN_RECV_BYTES, "Expected read length");
my ($magic, $cmd, $keylen, $extralen, $datatype, $status, $remaining,
$opaque, $ident_hi, $ident_lo) = unpack(::RES_PKT_FMT, $hdr);
Test::More::is($magic, ::RES_MAGIC, "Got proper response magic");
my $cas = ($ident_hi * 2 ** 32) + $ident_lo;
return ($opaque, '', $cas, 0) if($remaining == 0);
# fetch the value
my $rv="";
while($remaining - length($rv) > 0) {
$self->{socket}->recv(my $buf, $remaining - length($rv));
$rv .= $buf;
}
if(length($rv) != $remaining) {
my $found = length($rv);
die("Expected $remaining bytes, got $found");
}
if (defined $myopaque) {
Test::More::is($opaque, $myopaque, "Expected opaque");
} else {
Test::More::pass("Implicit pass since myopaque is undefined");
}
if ($status) {
die MC::Error->new($status, $rv);
}
return ($opaque, $rv, $cas, $keylen);
}
sub _do_command {
my $self = shift;
die unless @_ >= 3;
my ($cmd, $key, $val, $extra_header, $cas) = @_;
$extra_header = '' unless defined $extra_header;
my $opaque = int(rand(2**32));
$self->send_command($cmd, $key, $val, $opaque, $extra_header, $cas);
my (undef, $rv, $rcas) = $self->_handle_single_response($opaque);
return ($rv, $rcas);
}
sub _incrdecr_header {
my $self = shift;
my ($amt, $init, $exp) = @_;
my $amt_hi = int($amt / 2 ** 32);
my $amt_lo = int($amt % 2 ** 32);
my $init_hi = int($init / 2 ** 32);
my $init_lo = int($init % 2 ** 32);
my $extra_header = pack(::INCRDECR_PKT_FMT, $amt_hi, $amt_lo, $init_hi,
$init_lo, $exp);
return $extra_header;
}
sub _incrdecr_cas {
my $self = shift;
my ($cmd, $key, $amt, $init, $exp) = @_;
my ($data, $rcas) = $self->_do_command($cmd, $key, '',
$self->_incrdecr_header($amt, $init, $exp));
my $header = substr $data, 0, 8, '';
my ($resp_hi, $resp_lo) = unpack "NN", $header;
my $resp = ($resp_hi * 2 ** 32) + $resp_lo;
return $resp, $rcas;
}
sub _incrdecr {
my $self = shift;
my ($v, $c) = $self->_incrdecr_cas(@_);
return $v
}
sub silent_incrdecr {
my $self = shift;
my ($cmd, $key, $amt, $init, $exp) = @_;
my $opaque = 8275753;
$mc->send_silent($cmd, $key, '', $opaque,
$mc->_incrdecr_header($amt, $init, $exp));
}
sub stats {
my $self = shift;
my $key = shift;
my $cas = 0;
my $opaque = int(rand(2**32));
$self->send_command(::CMD_STAT, $key, '', $opaque, '', $cas);
my %rv = ();
my $found_key = '';
my $found_val = '';
do {
my ($op, $data, $cas, $keylen) = $self->_handle_single_response($opaque);
if($keylen > 0) {
$found_key = substr($data, 0, $keylen);
$found_val = substr($data, $keylen);
$rv{$found_key} = $found_val;
} else {
$found_key = '';
}
} while($found_key ne '');
return %rv;
}
sub get {
my $self = shift;
my $key = shift;
my ($rv, $cas) = $self->_do_command(::CMD_GET, $key, '', '');
my $header = substr $rv, 0, 4, '';
my $flags = unpack("N", $header);
return ($flags, $rv, $cas);
}
sub get_multi {
my $self = shift;
my @keys = @_;
for (my $i = 0; $i < @keys; $i++) {
$self->send_command(::CMD_GETQ, $keys[$i], '', $i, '', 0);
}
my $terminal = @keys + 10;
$self->send_command(::CMD_NOOP, '', '', $terminal);
my %return;
while (1) {
my ($opaque, $data) = $self->_handle_single_response;
last if $opaque == $terminal;
my $header = substr $data, 0, 4, '';
my $flags = unpack("N", $header);
$return{$keys[$opaque]} = [$flags, $data];
}
return %return if wantarray;
return \%return;
}
sub touch {
my $self = shift;
my ($key, $expire) = @_;
my $extra_header = pack "N", $expire;
my $cas = 0;
return $self->_do_command(::CMD_TOUCH, $key, '', $extra_header, $cas);
}
sub gat {
my $self = shift;
my $key = shift;
my $expire = shift;
my $extra_header = pack "N", $expire;
my ($rv, $cas) = $self->_do_command(::CMD_GAT, $key, '', $extra_header);
my $header = substr $rv, 0, 4, '';
my $flags = unpack("N", $header);
return ($flags, $rv, $cas);
}
sub version {
my $self = shift;
return $self->_do_command(::CMD_VERSION, '', '');
}
sub flush {
my $self = shift;
return $self->_do_command(::CMD_FLUSH, '', '');
}
sub add {
my $self = shift;
my ($key, $val, $flags, $expire) = @_;
my $extra_header = pack "NN", $flags, $expire;
my $cas = 0;
return $self->_do_command(::CMD_ADD, $key, $val, $extra_header, $cas);
}
sub set {
my $self = shift;
my ($key, $val, $flags, $expire, $cas) = @_;
my $extra_header = pack "NN", $flags, $expire;
return $self->_do_command(::CMD_SET, $key, $val, $extra_header, $cas);
}
sub _append_prepend {
my $self = shift;
my ($cmd, $key, $val, $cas) = @_;
return $self->_do_command($cmd, $key, $val, '', $cas);
}
sub replace {
my $self = shift;
my ($key, $val, $flags, $expire) = @_;
my $extra_header = pack "NN", $flags, $expire;
my $cas = 0;
return $self->_do_command(::CMD_REPLACE, $key, $val, $extra_header, $cas);
}
sub delete {
my $self = shift;
my ($key) = @_;
return $self->_do_command(::CMD_DELETE, $key, '');
}
sub incr {
my $self = shift;
my ($key, $amt, $init, $exp) = @_;
$amt = 1 unless defined $amt;
$init = 0 unless defined $init;
$exp = 0 unless defined $exp;
return $self->_incrdecr(::CMD_INCR, $key, $amt, $init, $exp);
}
sub incr_cas {
my $self = shift;
my ($key, $amt, $init, $exp) = @_;
$amt = 1 unless defined $amt;
$init = 0 unless defined $init;
$exp = 0 unless defined $exp;
return $self->_incrdecr_cas(::CMD_INCR, $key, $amt, $init, $exp);
}
sub decr {
my $self = shift;
my ($key, $amt, $init, $exp) = @_;
$amt = 1 unless defined $amt;
$init = 0 unless defined $init;
$exp = 0 unless defined $exp;
return $self->_incrdecr(::CMD_DECR, $key, $amt, $init, $exp);
}
sub noop {
my $self = shift;
return $self->_do_command(::CMD_NOOP, '', '');
}
package MC::Error;
use strict;
use warnings;
use constant ERR_UNKNOWN_CMD => 0x81;
use constant ERR_NOT_FOUND => 0x1;
use constant ERR_EXISTS => 0x2;
use constant ERR_TOO_BIG => 0x3;
use constant ERR_EINVAL => 0x4;
use constant ERR_NOT_STORED => 0x5;
use constant ERR_DELTA_BADVAL => 0x6;
use overload '""' => sub {
my $self = shift;
return "Memcache Error ($self->[0]): $self->[1]";
};
sub new {
my $class = shift;
my $error = [@_];
my $self = bless $error, (ref $class || $class);
return $self;
}
sub not_found {
my $self = shift;
return $self->[0] == ERR_NOT_FOUND;
}
sub exists {
my $self = shift;
return $self->[0] == ERR_EXISTS;
}
sub too_big {
my $self = shift;
return $self->[0] == ERR_TOO_BIG;
}
sub delta_badval {
my $self = shift;
return $self->[0] == ERR_DELTA_BADVAL;
}
sub einval {
my $self = shift;
return $self->[0] == ERR_EINVAL;
}
# vim: filetype=perl
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