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# This program is copyright 2007-2011 Baron Schwartz, 2011 Percona Ireland Ltd.
# Feedback and improvements are welcome.
#
# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
# systems, you can issue `man perlgpl' or `man perlartistic' to read these
# licenses.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA.
# ###########################################################################
# SlowLogWriter package
# ###########################################################################
{
# Package: SlowLogWriter
# SlowLogWriter writes events to a file in MySQL slow log format.
package SlowLogWriter;
use strict;
use warnings FATAL => 'all';
use English qw(-no_match_vars);
use constant PTDEBUG => $ENV{PTDEBUG} || 0;
sub new {
my ( $class ) = @_;
bless {}, $class;
}
# Print out in slow-log format.
sub write {
my ( $self, $fh, $event ) = @_;
if ( $event->{ts} ) {
print $fh "# Time: $event->{ts}\n";
}
if ( $event->{user} ) {
printf $fh "# User\@Host: %s[%s] \@ %s []\n",
$event->{user}, $event->{user}, $event->{host};
}
if ( $event->{ip} && $event->{port} ) {
printf $fh "# Client: $event->{ip}:$event->{port}\n";
}
if ( $event->{Thread_id} ) {
printf $fh "# Thread_id: $event->{Thread_id}\n";
}
# Tweak output according to log type: either classic or Percona-patched.
my $percona_patched = exists $event->{QC_Hit} ? 1 : 0;
# Classic slow log attribs.
printf $fh
"# Query_time: %.6f Lock_time: %.6f Rows_sent: %d Rows_examined: %d\n",
# TODO 0 Rows_affected: 0 Rows_read: 1
map { $_ || 0 }
@{$event}{qw(Query_time Lock_time Rows_sent Rows_examined)};
if ( $percona_patched ) {
# First 2 lines of Percona-patched attribs.
printf $fh
"# QC_Hit: %s Full_scan: %s Full_join: %s Tmp_table: %s Tmp_table_on_disk: %s\n# Filesort: %s Filesort_on_disk: %s Merge_passes: %d\n",
map { $_ || 0 }
@{$event}{qw(QC_Hit Full_scan Full_join Tmp_table Tmp_table_on_disk Filesort Filesort_on_disk Merge_passes)};
if ( exists $event->{InnoDB_IO_r_ops} ) {
# Optional 3 lines of Percona-patched InnoDB attribs.
printf $fh
"# InnoDB_IO_r_ops: %d InnoDB_IO_r_bytes: %d InnoDB_IO_r_wait: %s\n# InnoDB_rec_lock_wait: %s InnoDB_queue_wait: %s\n# InnoDB_pages_distinct: %d\n",
map { $_ || 0 }
@{$event}{qw(InnoDB_IO_r_ops InnoDB_IO_r_bytes InnoDB_IO_r_wait InnoDB_rec_lock_wait InnoDB_queue_wait InnoDB_pages_distinct)};
}
else {
printf $fh "# No InnoDB statistics available for this query\n";
}
}
if ( $event->{db} ) {
printf $fh "use %s;\n", $event->{db};
}
if ( $event->{arg} =~ m/^administrator command/ ) {
print $fh '# ';
}
print $fh $event->{arg}, ";\n";
return;
}
sub _d {
my ($package, undef, $line) = caller 0;
@_ = map { (my $temp = $_) =~ s/\n/\n# /g; $temp; }
map { defined $_ ? $_ : 'undef' }
@_;
print STDERR "# $package:$line $PID ", join(' ', @_), "\n";
}
1;
}
# ###########################################################################
# End SlowLogWriter package
# ###########################################################################
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