postgresql/src/test/perl/PostgreSQL/Test/SimpleTee.pm

64 lines
1.5 KiB
Perl

# Copyright (c) 2021-2024, PostgreSQL Global Development Group
# A simple 'tee' implementation, using perl tie.
#
# Whenever you print to the handle, it gets forwarded to a list of
# handles. The list of output filehandles is passed to the constructor.
#
# This is similar to IO::Tee, but only used for output. Only the PRINT
# method is currently implemented; that's all we need. We don't want to
# depend on IO::Tee just for this.
# The package is enhanced to add timestamp and elapsed time decorations to
# the log file traces sent through this interface from Test::More functions
# (ok, is, note, diag etc.). Elapsed time is shown as the time since the last
# log trace.
package PostgreSQL::Test::SimpleTee;
use strict;
use warnings FATAL => 'all';
use Time::HiRes qw(time);
my $last_time;
BEGIN { $last_time = time; }
sub _time_str
{
my $tm = time;
my $diff = $tm - $last_time;
$last_time = $tm;
my ($sec, $min, $hour) = localtime($tm);
my $msec = int(1000 * ($tm - int($tm)));
return sprintf("[%.2d:%.2d:%.2d.%.3d](%.3fs) ",
$hour, $min, $sec, $msec, $diff);
}
sub TIEHANDLE
{
my $self = shift;
return bless \@_, $self;
}
sub PRINT
{
my $self = shift;
my $ok = 1;
# The first file argument passed to tiehandle in PostgreSQL::Test::Utils is
# the original stdout, which is what PROVE sees. Additional decorations
# confuse it, so only put out the time string on files after the first.
my $skip = 1;
my $ts = _time_str;
for my $fh (@$self)
{
print $fh ($skip ? "" : $ts), @_ or $ok = 0;
$fh->flush or $ok = 0;
$skip = 0;
}
return $ok;
}
1;