Hi Monks

I put together following codes were put together with help from fellow monks ( thanks alot ! ).

The idea of the task is to :

  • read a log file, in this case, log.yyyy-mm-dd
  • comb thru the log file to look for records that contains the string 'two' and duration between the 2 records is more than 3600 seconds.
  • export the result into a report file, report.yyyy-mm-dd.txt

    • I have done this far and when i run the code with, it created an file with zero byte size.

    Any clue what went wrong with the script ? 

    #!/usr/local/bin/perl -w
use strict;
use warnings;
use DateTime::Format::Strptime;
my $Strp = new DateTime::Format::Strptime(pattern     => '%Y-%b-%d %T'
+,);
my $infile = 'log.2008-01-11';
my $outfile = 'report.2008-01-11.txt';
my($fh_out, $fh);
my %lookup;
my $channel = 'two';
my $time_delta = 3600;  # seconds = 1 hour
open($fh_out, '>', $outfile) or die "Could not open outfile: $!";
open($fh, '<', $infile) or die "Could not open logfile: $!";
while (<$fh>) {
    next unless /$channel/;
my ($dt, $timestamp, $refs);
   if (m/^(.*) UTC.*ref .*? = (\d+)$/) {
        my $t = $1;
        $refs      = $2;
        $dt        = $Strp->parse_datetime($t);
        $timestamp = $dt->epoch();
        warn "found: $. $timestamp\t$refs\n";
    }
      else {
      warn "No match: $_  \n";
      next;
   }
    if ( defined($lookup{$refs}) && $lookup{$refs} + $time_delta <= $t
+imestamp ) {
        print $fh_out "REFS $refs: occurrences at " . $lookup{$refs} .
+ "and $timestamp \n";
        print "REFS $refs: occurrences at " . $lookup{$refs} . " and $
+timestamp \n";
    }
    $lookup{$refs} = $timestamp;
}
close $fh_out;
#close $fh;

    [download]

    content of log.2008-01-11 

    2007-Jan-11 00:00:00 UTC (GMT +0000) - Poll: channel = one, ref = com,
+ id = 595143009
2007-Jan-11 00:00:01 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 133714761
2007-Jan-11 00:00:01 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 595131400
2007-Jan-11 00:00:02 UTC (GMT +0000) - Poll: channel = three, ref = co
+m, id = 660868931
2007-Jan-11 00:00:02 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 595191883
2007-Jan-11 00:00:03 UTC (GMT +0000) - Poll: channel = one, ref = com,
+ id = 098533326
2007-Jan-11 00:00:03 UTC (GMT +0000) - Poll: channel = three, ref = co
+m, id = 659718092
2007-Jan-11 00:00:04 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 006456768
2007-Jan-11 00:00:05 UTC (GMT +0000) - Poll: channel = three, ref = co
+m, id = 133714761
2007-Jan-11 01:07:06 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 133714761

    [download]

    Desired contents of report.2008-01-11.txt 

    2007-Jan-11 00:00:01 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 133714761 0
2007-Jan-11 00:00:01 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 595131400 0
2007-Jan-11 00:00:02 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 595191883 0
2007-Jan-11 00:00:04 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 006456768 0
2007-Jan-11 01:07:06 UTC (GMT +0000) - Poll: channel = two, ref = com,
+ id = 133714761 1

    [download]

    In reply to failure to generate report file by tuakilan

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