#!/usr/bin/perl -w
use sigtrap 'handler' => \&shutdown, 'INT', 'ABRT', 'QUIT', 'TERM';


sub shutdown{
   print logTime." INT|ABRT|QUIT|TERM received....shutting down service.\n";
   #
   #  HOW DO I KILL MY ASYNC BLOCK / LOGIN THREADS FROM HERE
   #
   # 
   close(LOOK_FOR_LEASE) if fileno(LOOK_FOR_LEASE);
   close(OUTPUT) if fileno(OUTPUT);
   close(ERROR)  if fileno(ERROR);
   threads->exit();

}




# Opening log file.
# Redirecting OUTPUT and ERR to log file for all threads
open OUTPUT, '>>', "/usr/local/xxx/log/lease.log" or die $!;
open ERROR,  '>>', "/usr/local/xxx/log/lease.log"  or die $!;
STDOUT->fdopen( \*OUTPUT, 'w' ) or die $!;
STDERR->fdopen( \*ERROR,  'w' ) or die $!;


# Declare shared variables here
...
...

$sharedMAChash :shared;

################ MAC watch Thread1##################
$thread300 = async { 
 while(sleep 300){
  
  # Checking done here.
  # Contact server. Get status of all macs from server
  # Note : Hash value 1 = Authenticated device. 0 = Failed Login device. 
  # Parse server response here.

  # Is online ?  $sharedMAChash{$mac} = 1  #  No change 
  # Is online && $sharedMAChash{$mac} = 0? # Del from hash 
  # Is offline?                            # Del from hash              
  
 }
}; 

################## Main Thread ##################
while(usleep 250000){
  while(<LOOK_FOR_LEASE>){
     # Found a new IP lease . Parse MAC
     # Launch Login thread 
     
$allmac{$mac} = threads->create(\&loginmac);
 
  }
  
}   

################## Login thread ##################
sub loginmac{

 # Use HTTP::Request and contact server and Auth this device. 

# Login Success?
  $sharedMAChash{$mac} = 1; # Authentication Success
 
# Login Fail
  $sharedMAChash{$mac} = 0; # Authenticatication Fail.Hold MAC in hash until Timeout threads drops it from hash.

}