use XML::DOM;
my $parser = new XML::DOM::Parser;
my $doc = $parser->parsefile("config.xml");
for my $task ($doc->getElementsByTagName("Task")){
my $taskName = $task ->getAttribute("name");
my $inputInfo= $etlHop->getChildAtIndex(3);
my $inputFile= $inputInfo->getChildAtIndex(1)->getChildAtIndex(0)->getData;
}