I would do something like this (untested):
use File::ReadBackwards;
use POSIX "strftime";
my $success;
my $items;
my $earliest = POSIX::strftime( "%Y-%m-%d %H:%M:%S", gmtime( time() -
+30 * 60 ) );
$bw = File::ReadBackwards->new( 'log_file' ) or
die "can't read 'log_file' $!" ;
while ( defined( my $log_line = $bw->readline() ) ) {
last if $log_line lt $earliest;
$success ||= $log_line =~ /STATUS = SUCCESS/;
$items ||= $log_line =~ /Found [1-9]\d* items to send/;
last if $success && $items;
}
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