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lib/AnyEvent/RipeRedis/Cluster.pm  view on Meta::CPAN

package AnyEvent::RipeRedis::Cluster;

use 5.008000;
use strict;
use warnings;
use base qw( Exporter );

our $VERSION = '0.32';

use AnyEvent::RipeRedis;
use AnyEvent::RipeRedis::Error;

use AnyEvent::Socket;
use List::MoreUtils qw( bsearch );
use Scalar::Util qw( looks_like_number weaken );
use Carp qw( croak );

my %ERROR_CODES;

BEGIN {
  %ERROR_CODES = %AnyEvent::RipeRedis::Error::ERROR_CODES;
  my @err_codes  = keys %ERROR_CODES;
  our @EXPORT_OK = ( @err_codes, qw( crc16 hash_slot ) );
  our %EXPORT_TAGS = ( err_codes => \@err_codes );
}

use constant {
  D_REFRESH_INTERVAL => 15,

  %ERROR_CODES,

  # Operation status
  S_NEED_DO     => 1,
  S_IN_PROGRESS => 2,
  S_DONE        => 3,

  MAX_SLOTS => 16384,
};

my @CRC16_TAB = (
  0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
  0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
  0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
  0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
  0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
  0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
  0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
  0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
  0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
  0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
  0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
  0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
  0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
  0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
  0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
  0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
  0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
  0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
  0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
  0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
  0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
  0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
  0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
  0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
  0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
  0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
  0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
  0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
  0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
  0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
  0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
  0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
);

my %PREDEFINED_CMDS = (

lib/AnyEvent/RipeRedis/Cluster.pm  view on Meta::CPAN

  $self->{_input_queue} = [];
  $self->{_temp_queue}  = [];

  unless ( $self->{lazy} ) {
    $self->_init;
  }

  return $self;
}

sub execute {
  my $self     = shift;
  my $cmd_name = shift;

  my $cmd = $self->_prepare( $cmd_name, [@_] );
  $self->_route($cmd);

  return;
}

sub disconnect {
  my $self = shift;

  foreach my $node ( values %{ $self->{_nodes_pool} } ) {
    $node->disconnect;
  }
  $self->_reset_internals;
  $self->_abort;

  return;
}

sub nodes {
  my $self         = shift;
  my $key          = shift;
  my $allow_slaves = shift;

  return unless defined $self->{_slots};

  my $slot;
  if ( defined $key ) {
    $slot = hash_slot($key);
  }

  my $nodes = $self->_nodes( $slot, $allow_slaves );

  return unless defined $nodes;

  return wantarray
      ? @{ $self->{_nodes_pool} }{ @{$nodes} }
      : $self->{_nodes_pool}{ $nodes->[0] };
}

sub refresh_interval {
  my $self = shift;

  if (@_) {
    my $seconds = shift;

    if ( defined $seconds ) {
      if ( !looks_like_number($seconds) || $seconds < 0 ) {
        croak qq{"refresh_interval" must be a positive number};
      }
      $self->{refresh_interval} = $seconds;
    }
    else {
      $self->{refresh_interval} = D_REFRESH_INTERVAL;
    }
  }

  return $self->{refresh_interval};
}

sub on_error {
  my $self = shift;

  if ( @_ ) {
    my $on_error = shift;

    if ( defined $on_error ) {
      $self->{on_error} = $on_error;
    }
    else {
      $self->{on_error} = sub {
        my $err = shift;
        warn $err->message . "\n";
      };
    }
  }

  return $self->{on_error};
}

sub crc16 {
  my $data = shift;

  unless ( utf8::downgrade( $data, 1 ) ) {
    utf8::encode($data);
  }

  my $crc = 0;
  foreach my $char ( split //, $data ) {
    $crc = ( $crc << 8 & 0xff00 )
        ^ $CRC16_TAB[ ( ( $crc >> 8 ) ^ ord($char) ) & 0x00ff ];
  }

  return $crc;
}

sub hash_slot {
  my $hashtag = shift;

  if ( $hashtag =~ m/\{([^}]*?)\}/ ) {
    if ( length $1 > 0 ) {
      $hashtag = $1;
    }
  }

  return crc16($hashtag) % MAX_SLOTS;
}