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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.
package Bugzilla::Instrument;
use strict;
use warnings;
use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
use Encode qw(encode_utf8);
use Sys::Syslog qw(:DEFAULT);
sub new {
my ($class, $label) = @_;
my $self = bless({ times => [], labels => [], values => [] }, $class);
$self->label($label);
$self->time('start_time');
return $self;
}
sub time {
my ($self, $name) = @_;
# for now $name isn't used
push @{ $self->{times} }, clock_gettime(CLOCK_MONOTONIC);
}
sub label {
my ($self, $value) = @_;
push @{ $self->{labels} }, $value;
}
sub value {
my ($self, $name, $value) = @_;
# for now $name isn't used
push @{ $self->{values} }, $value;
}
sub log {
my $self = shift;
my @times = @{ $self->{times} };
return unless scalar(@times) >= 2;
my @labels = @{ $self->{labels} };
my @values = @{ $self->{values} };
# calculate diffs
my @diffs = ($times[$#times] - $times[0]);
while (1) {
my $start = shift(@times);
last unless scalar(@times);
push @diffs, $times[0] - $start;
}
# build syslog string
my $format = '[timing]' . (' %s' x scalar(@labels)) . (' %.6f' x scalar(@diffs)) . (' %s' x scalar(@values));
my $entry = sprintf($format, @labels, @diffs, @values);
# and log
openlog('apache', 'cons,pid', 'local4');
syslog('notice', encode_utf8($entry));
closelog();
}
1;
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