Howdy Monks,

I am trying to determine what might be a way to remember a location in a Log file if my FIFO process dies or is killed. Currently the code I have does maintain its location within a growing log, but if the process dies or is killed I lose my location. I was wondering if I write my tell() information to a file on each iteration, and then have the code read this information only upon a new startup of the process would it work? But what I am not sure of is how would I fall back into my loop using the seek() information. Or if anyone has a better way of maintaining a growing log. I have seen the File::Tail module, but am having trouble getting it to work. Anyway, here's my FIFO code. Thanks in advance. 

# Preset Values
my $LogFile="/usr/local/apache2/eventmgr/ncomount/page.log";
my $PipeName="/usr/local/apache2/pipes/.nco_p_data";
my $naptime=5;
my $curpos;

open(LOGFILE, "<$LogFile") ||  die "Couldn't open file $Status - $!\n"
+;

        for(;;){
          for($curpos=tell(LOGFILE);LOGFILE;$curpos=tell(LOGFILE)){
                while($line=<LOGFILE>){
#                       print $line;
                        if($line =~ /(.*)\|~\|(.*)\|~\|(.*)/){
                                $PagerID=$1;
                                $Message=$2.$3;
                        }
                        unless( -p $PipeName) {
                        unlink $PipeName;
                        system("mkfifo -m 644 $PipeName") && die "Can'
+t mkfifo $PipeName: $!";
                        }
                        open(FIFO,">$PipeName") || die "Couldn't open 
+file $PipeName - $!\n";
                        print FIFO "NEW|TODAY|NOW|\"\"|$PagerID|$Messa
+ge\n";
                        close(FIFO);

                }
                sleep(1);
          }
          sleep $naptime;
          seek(LOGFILE, $curpos, 0);  # seek to where we had been
        }

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In reply to Remembering Log Location after process dies. by onegative

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