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|
#!/usr/bin/env perl
BEGIN {
die "The PERCONA_TOOLKIT_BRANCH environment variable is not set. See http://code.google.
com/p/maatkit/wiki/Testing"
unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
};
use strict;
use warnings FATAL => 'all';
use English qw( -no_match_vars );
use Test::More;
use Data::Dumper;
use PerconaTest;
use Sandbox;
require "$trunk/bin/pt-slave-delay";
my $dp = DSNParser->new(opts => $dsn_opts);
my $sb = Sandbox->new(basedir => '/tmp', DSNParser => $dp);
my $master_dbh = $sb->get_dbh_for('master');
my $dbh = $sb->get_dbh_for('slave1');
if ($sandbox_version ge '5.7') {
plan skip_all => 'Use SQL_DELAY';
}
if ( !$dbh ) {
plan skip_all => 'Cannot connect to MySQL slave.';
}
elsif ( !@{$dbh->selectcol_arrayref("SHOW DATABASES LIKE 'sakila'")} ) {
plan skip_all => 'sakila db not loaded';
}
my $cnf = '/tmp/12346/my.sandbox.cnf';
my $output;
# #############################################################################
# Issue 991: Make mk-slave-delay reconnect to db when it loses the dbconnection
# #############################################################################
# Fork a child that will stop the slave while we, the parent, run
# tool. The tool should report that it lost its slave cxn, then
# the child should restart the slave, and the tool should report
# that it reconnected and did some work, ending with "Setting slave
# to run normally".
my $pid = fork();
if ( $pid ) {
# parent
$output = output(
sub { pt_slave_delay::main('-F', $cnf, qw(--interval 1 --run-time 4)) },
stderr => 1,
);
like(
$output,
qr/Lost connection.+?Setting slave to run/ms,
"Reconnect to slave"
);
}
else {
# child
sleep 1;
diag(`/tmp/12346/stop >/dev/null`);
sleep 1;
diag(`/tmp/12346/start >/dev/null`);
# Ensure we don't break the sandbox -- instance 12347 will be disconnected
# when its master gets rebooted
diag(`/tmp/12347/use -e "stop slave; start slave"`);
exit;
}
# Reap the child.
waitpid ($pid, 0);
$sb->wait_for_slaves;
# Do it all over again, but this time KILL instead of restart.
$pid = fork();
if ( $pid ) {
# parent. Note the --database mysql
$output = output(
sub { pt_slave_delay::main('-F', $cnf, qw(--interval 1 --run-time 4),
qw(--database mysql)) },
stderr => 1,
);
like(
$output,
qr/Lost connection.+?Setting slave to run/ms,
"Reconnect to slave when KILL'ed"
);
}
else {
# child. Note that we'll kill the parent's 'mysql' connection
sleep 1;
my $c_dbh = $sb->get_dbh_for('slave1');
my @cxn = @{$c_dbh->selectall_arrayref('show processlist', {Slice => {}})};
foreach my $c ( @cxn ) {
# The parent's connection:
# {command => 'Sleep',db => 'mysql',host => 'localhost',id => '5',info => undef,state => '',time => '1',user => 'msandbox'}
if ( ($c->{db} || '') eq 'mysql' && ($c->{user} || '') eq 'msandbox'
&& ($c->{command} || '') ne 'Binlog Dump' # Don't kill the slave threads from 12347 or others!
) {
diag("Killing connection on slave1: $c->{id} ($c->{command})");
$c_dbh->do("KILL $c->{id}");
}
}
exit;
}
# Reap the child.
waitpid ($pid, 0);
# #############################################################################
# Done.
# #############################################################################
$sb->wipe_clean($master_dbh);
ok($sb->ok(), "Sandbox servers") or BAIL_OUT(__FILE__ . " broke the sandbox");
done_testing;
exit;
|
