mariadb/plugin/handler_socket/perl-Net-HandlerSocket/lib/Net/HandlerSocket/Pool.pm
Daniel Black 37c88445e3 mtr: use env for perl
On FreeBSD, perl isn't in /usr/bin, its in /usr/local/bin or
elsewhere in the path.

Like storage/{maria/unittest/,}ma_test_* , we use /usr/bin/env to
find perl and run it.
2020-06-23 03:24:46 +02:00

362 lines
9 KiB
Perl
Executable file

#!/usr/bin/env perl
package Net::HandlerSocket::HSPool;
use strict;
use warnings;
use Net::HandlerSocket;
use Socket;
sub new {
my $self = {
config => $_[1],
reopen_interval => 60,
hostmap => { },
};
return bless $self, $_[0];
}
sub clear_pool {
my ($self) = @_;
$self->{hostmap} = { };
}
sub on_error {
my ($self, $obj) = @_;
my $error_func = $self->{config}->{error};
if (defined($error_func)) {
return &{$error_func}($obj);
}
die $obj;
}
sub on_warning {
my ($self, $obj) = @_;
my $warning_func = $self->{config}->{warning};
if (defined($warning_func)) {
return &{$warning_func}($obj);
}
}
sub get_conf {
my ($self, $dbtbl) = @_;
my $hcent = $self->{config}->{hostmap}->{$dbtbl};
if (!defined($hcent)) {
$self->on_error("get_conf: $dbtbl not found");
return undef;
}
my %cpy = %$hcent;
$cpy{port} ||= 9998;
$cpy{timeout} ||= 2;
return \%cpy;
}
sub resolve_hostname {
my ($self, $hcent, $host_ip_list) = @_;
if (defined($host_ip_list)) {
if (scalar(@$host_ip_list) > 0) {
$hcent->{host} = shift(@$host_ip_list);
return $host_ip_list;
}
return undef; # no more ip
}
my $host = $hcent->{host}; # unresolved name
$hcent->{hostname} = $host;
my $resolve_list_func = $self->{config}->{resolve_list};
if (defined($resolve_list_func)) {
$host_ip_list = &{$resolve_list_func}($host);
if (scalar(@$host_ip_list) > 0) {
$hcent->{host} = shift(@$host_ip_list);
return $host_ip_list;
}
return undef; # no more ip
}
my $resolve_func = $self->{config}->{resolve};
if (defined($resolve_func)) {
$hcent->{host} = &{$resolve_func}($host);
return [];
}
my $packed = gethostbyname($host);
if (!defined($packed)) {
return undef;
}
$hcent->{host} = inet_ntoa($packed);
return [];
}
sub get_handle_exec {
my ($self, $db, $tbl, $idx, $cols, $exec_multi, $exec_args) = @_;
my $now = time();
my $dbtbl = join('.', $db, $tbl);
my $hcent = $self->get_conf($dbtbl); # copy
if (!defined($hcent)) {
return undef;
}
my $hmkey = join(':', $hcent->{host}, $hcent->{port});
my $hment = $self->{hostmap}->{$hmkey};
# [ open_time, handle, index_map, host, next_index_id ]
my $host_ip_list;
TRY_OTHER_IP:
if (!defined($hment) ||
$hment->[0] + $self->{reopen_interval} < $now ||
!$hment->[1]->stable_point()) {
$host_ip_list = $self->resolve_hostname($hcent, $host_ip_list);
if (!defined($host_ip_list)) {
my $hostport = $hmkey . '(' . $hcent->{host} . ')';
$self->on_error("HSPool::get_handle" .
"($db, $tbl, $idx, $cols): host=$hmkey: " .
"no more active ip");
return undef;
}
my $hnd = new Net::HandlerSocket($hcent);
my %m = ();
$hment = [ $now, $hnd, \%m, $hcent->{host}, 1 ];
$self->{hostmap}->{$hmkey} = $hment;
}
my $hnd = $hment->[1];
my $idxmap = $hment->[2];
my $imkey = join(':', $idx, $cols);
my $idx_id = $idxmap->{$imkey};
if (!defined($idx_id)) {
$idx_id = $hment->[4];
my $e = $hnd->open_index($idx_id, $db, $tbl, $idx, $cols);
if ($e != 0) {
my $estr = $hnd->get_error();
my $hostport = $hmkey . '(' . $hcent->{host} . ')';
my $errmess = "HSPool::get_handle open_index" .
"($db, $tbl, $idx, $cols): host=$hostport " .
"err=$e($estr)";
$self->on_warning($errmess);
$hnd->close();
$hment = undef;
goto TRY_OTHER_IP;
}
$hment->[4]++;
$idxmap->{$imkey} = $idx_id;
}
if ($exec_multi) {
my $resarr;
for my $cmdent (@$exec_args) {
$cmdent->[0] = $idx_id;
}
if (scalar(@$exec_args) == 0) {
$resarr = [];
} else {
$resarr = $hnd->execute_multi($exec_args);
}
my $i = 0;
for my $res (@$resarr) {
if ($res->[0] != 0) {
my $cmdent = $exec_args->[$i];
my $ec = $res->[0];
my $estr = $res->[1];
my $op = $cmdent->[1];
my $kfvs = $cmdent->[2];
my $kvstr = defined($kfvs)
? join(',', @$kfvs) : '';
my $limit = $cmdent->[3] || 0;
my $skip = $cmdent->[4] || 0;
my $hostport = $hmkey . '(' . $hcent->{host}
. ')';
my $errmess = "HSPool::get_handle execm" .
"($db, $tbl, $idx, [$cols], " .
"($idx_id), $op, [$kvstr] " .
"$limit, $skip): " .
"host=$hostport err=$ec($estr)";
if ($res->[0] < 0 || $res->[0] == 2) {
$self->on_warning($errmess);
$hnd->close();
$hment = undef;
goto TRY_OTHER_IP;
} else {
$self->on_error($errmess);
}
}
shift(@$res);
++$i;
}
return $resarr;
} else {
my $res = $hnd->execute_find($idx_id, @$exec_args);
if ($res->[0] != 0) {
my ($op, $kfvals, $limit, $skip) = @$exec_args;
my $ec = $res->[0];
my $estr = $res->[1];
my $kvstr = join(',', @$kfvals);
my $hostport = $hmkey . '(' . $hcent->{host} . ')';
my $errmess = "HSPool::get_handle exec" .
"($db, $tbl, $idx, [$cols], ($idx_id), " .
"$op, [$kvstr], $limit, $skip): " .
"host=$hostport err=$ec($estr)";
if ($res->[0] < 0 || $res->[0] == 2) {
$self->on_warning($errmess);
$hnd->close();
$hment = undef;
goto TRY_OTHER_IP;
} else {
$self->on_error($errmess);
}
}
shift(@$res);
return $res;
}
}
sub index_find {
my ($self, $db, $tbl, $idx, $cols, $op, $kfvals, $limit, $skip) = @_;
# cols: comma separated list
# kfvals: arrayref
$limit ||= 0;
$skip ||= 0;
my $res = $self->get_handle_exec($db, $tbl, $idx, $cols,
0, [ $op, $kfvals, $limit, $skip ]);
return $res;
}
sub index_find_multi {
my ($self, $db, $tbl, $idx, $cols, $cmdlist) = @_;
# cols : comma separated list
# cmdlist : [ dummy, op, kfvals, limit, skip ]
# kfvals : arrayref
my $resarr = $self->get_handle_exec($db, $tbl, $idx, $cols,
1, $cmdlist);
return $resarr;
}
sub result_single_to_arrarr {
my ($numcols, $hsres, $ret) = @_;
my $hsreslen = scalar(@$hsres);
my $rlen = int($hsreslen / $numcols);
$ret = [ ] if !defined($ret);
my @r = ();
my $p = 0;
for (my $i = 0; $i < $rlen; ++$i) {
my @a = splice(@$hsres, $p, $numcols);
$p += $numcols;
push(@$ret, \@a);
}
return $ret; # arrayref of arrayrefs
}
sub result_multi_to_arrarr {
my ($numcols, $mhsres, $ret) = @_;
$ret = [ ] if !defined($ret);
for my $hsres (@$mhsres) {
my $hsreslen = scalar(@$hsres);
my $rlen = int($hsreslen / $numcols);
my $p = 0;
for (my $i = 0; $i < $rlen; ++$i) {
my @a = splice(@$hsres, $p, $numcols);
$p += $numcols;
push(@$ret, \@a);
}
}
return $ret; # arrayref of arrayrefs
}
sub result_single_to_hasharr {
my ($names, $hsres, $ret) = @_;
my $nameslen = scalar(@$names);
my $hsreslen = scalar(@$hsres);
my $rlen = int($hsreslen / $nameslen);
$ret = [ ] if !defined($ret);
my $p = 0;
for (my $i = 0; $i < $rlen; ++$i) {
my %h = ();
for (my $j = 0; $j < $nameslen; ++$j, ++$p) {
$h{$names->[$j]} = $hsres->[$p];
}
push(@$ret, \%h);
}
return $ret; # arrayref of hashrefs
}
sub result_multi_to_hasharr {
my ($names, $mhsres, $ret) = @_;
my $nameslen = scalar(@$names);
$ret = [ ] if !defined($ret);
for my $hsres (@$mhsres) {
my $hsreslen = scalar(@$hsres);
my $rlen = int($hsreslen / $nameslen);
my $p = 0;
for (my $i = 0; $i < $rlen; ++$i) {
my %h = ();
for (my $j = 0; $j < $nameslen; ++$j, ++$p) {
$h{$names->[$j]} = $hsres->[$p];
}
push(@$ret, \%h);
}
}
return $ret; # arrayref of hashrefs
}
sub result_single_to_hashhash {
my ($names, $key, $hsres, $ret) = @_;
my $nameslen = scalar(@$names);
my $hsreslen = scalar(@$hsres);
my $rlen = int($hsreslen / $nameslen);
$ret = { } if !defined($ret);
my $p = 0;
for (my $i = 0; $i < $rlen; ++$i) {
my %h = ();
for (my $j = 0; $j < $nameslen; ++$j, ++$p) {
$h{$names->[$j]} = $hsres->[$p];
}
my $k = $h{$key};
$ret->{$k} = \%h if defined($k);
}
return $ret; # hashref of hashrefs
}
sub result_multi_to_hashhash {
my ($names, $key, $mhsres, $ret) = @_;
my $nameslen = scalar(@$names);
$ret = { } if !defined($ret);
for my $hsres (@$mhsres) {
my $hsreslen = scalar(@$hsres);
my $rlen = int($hsreslen / $nameslen);
my $p = 0;
for (my $i = 0; $i < $rlen; ++$i) {
my %h = ();
for (my $j = 0; $j < $nameslen; ++$j, ++$p) {
$h{$names->[$j]} = $hsres->[$p];
}
my $k = $h{$key};
$ret->{$k} = \%h if defined($k);
}
}
return $ret; # hashref of hashrefs
}
sub select_cols_where_eq_aa {
# SELECT $cols FROM $db.$tbl WHERE $idx_key = $kv LIMIT 1
my ($self, $db, $tbl, $idx, $cols_aref, $kv_aref) = @_;
my $cols_str = join(',', @$cols_aref);
my $res = $self->index_find($db, $tbl, $idx, $cols_str, '=', $kv_aref);
return result_single_to_arrarr(scalar(@$cols_aref), $res);
}
sub select_cols_where_eq_hh {
# SELECT $cols FROM $db.$tbl WHERE $idx_key = $kv LIMIT 1
my ($self, $db, $tbl, $idx, $cols_aref, $kv_aref, $retkey) = @_;
my $cols_str = join(',', @$cols_aref);
my $res = $self->index_find($db, $tbl, $idx, $cols_str, '=', $kv_aref);
my $r = result_single_to_hashhash($cols_aref, $retkey, $res);
return $r;
}
sub select_cols_where_in_hh {
# SELECT $cols FROM $db.$tbl WHERE $idx_key in ($vals)
my ($self, $db, $tbl, $idx, $cols_aref, $vals_aref, $retkey) = @_;
my $cols_str = join(',', @$cols_aref);
my @cmdlist = ();
for my $v (@$vals_aref) {
push(@cmdlist, [ -1, '=', [ $v ] ]);
}
my $res = $self->index_find_multi($db, $tbl, $idx, $cols_str,
\@cmdlist);
return result_multi_to_hashhash($cols_aref, $retkey, $res);
}
1;