percona-toolkit/t/pt-kill/group_by.t

#!/usr/bin/env perl

BEGIN {
   die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
      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 tests => 8;

use PerconaTest;
use Sandbox;
require "$trunk/bin/pt-kill";

my $sample = "$trunk/t/lib/samples/pl/";
my $output;

# #############################################################################
# Issue 1181: Make mk-kill prevent cache stampedes
# #############################################################################

# The 3rd query (id 4) is user=root.  Next we'll test that we can filter
# that one out.
$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 2 --each-busy-time 2 --match-all),
      qw(--victims all-but-oldest --print)); }
);
like(
   $output,
   qr/# \S+ KILL 3 \(Query 9 sec\) select c from t where id='foo';\n# \S+ KILL 2 \(Query 9 sec\) select c from t where id='foo';\n# \S+ KILL 4 \(Query 5 sec\) select c from t where id='foo';/,
   "Kill all but oldest"
);

# Now with --match-user user1, the 3rd query is not matched.
$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 2 --each-busy-time 2 --match-user user1),
      qw(--victims all-but-oldest --print)); }
);
like(
   $output,
   qr/# \S+ KILL 3 \(Query 9 sec\) select c from t where id='foo';\n# \S+ KILL 2 \(Query 9 sec\) select c from t where id='foo';/,
   "Kill all but oldest, matching specific user"
);

# But queries matches with --any-busy-time.  There's 3 queries in the class
# with Times: 9, 9, 10.  The 9s don't match because they're not longer than
# 9, but the 10 does.  This is correct (see issue 1221) because --victims
# is applied *after* per-class query matching.
$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 2 --any-busy-time 10 --match-user user1),
      qw(--victims oldest --print)); }
);
is(
   $output,
   "",
   "Any busy time doesn't match"
);

$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 2 --any-busy-time 9 --match-user user1),
      qw(--victims oldest --print)); }
);
like(
   $output,
   qr/# \S+ KILL 1 \(Query 10 sec\)/,
   "Any busy time matches"
);

# Nothing matches because --each-busy-time isn't satifised.
$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 2 --each-busy-time 10 --match-user user1),
      qw(--victims all-but-oldest --print)); }
);
is(
   $output,
   "",
   "Each busy time doesn't match"
);

# Each busy time matches on the lowest possible value.
$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 2 --each-busy-time 8 --match-user user1),
      qw(--victims all-but-oldest --print)); }
);
like(
   $output,
   qr/# \S+ KILL 3 \(Query 9 sec\) select c from t where id='foo';\n# \S+ KILL 2 \(Query 9 sec\) select c from t where id='foo';/,
   "Each busy time matches"
);

# Nothing matches because --query-count isn't satisified.
$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 4 --each-busy-time 1 --match-user user1),
      qw(--victims all-but-oldest --print)); }
);
is(
   $output,
   "",
   "Query count doesn't match"
);

# Without stripping comments, the queries won't be grouped into a class.
$output = output(
   sub { pt_kill::main("$sample/recset010.txt", qw(--print),
      qw(--group-by info --query-count 2 --each-busy-time 2 --match-user user1),
      qw(--victims all-but-oldest --print --no-strip-comments)); }
);
is(
   $output,
   "",
   "Queries don't match unless comments are stripped"
);

# #############################################################################
# Done.
# #############################################################################
exit;