#!/usr/bin/perl
use strict;

my $infile  = 'worker.log';
open IN,'<',$infile or die "$!";

# input
my %data = ();
while (<IN>) {
  chomp;
  next unless /Task:id=(\d+)/;

  my $taskid = $1;
  my (undef,$timestamp,undef)  = split /\s+/,$_,3;
   
  if (/(Started|Submitted|Done).*(consuming|job)/){
    my $i = ($1 eq 'Done') ? 1 : 0;
    my $proc = ($2 eq 'consuming') ? $2 : 'Submitted';
    $data{$taskid.' '.$proc}[$i] = $timestamp;
  }

}
close IN;

# output
print join ',',('Task id','Start time',"End time\n");
for my $id (reverse sort keys %data){
  printf "%s,%s,%s\n",$id,@{$data{$id}};
}