Hi monks, I try to write a perl script that reads a log file, locate records which has same id number, but the time difference is more than 1 hour within the same day.

Herewith are the log file which was generated by a close source C program which was beyond my knowledge

ReadLog.txt 

<b>2008-Feb-01 00:00:02 UTC (GMT +0000) - id = 000000001, Status = fai
+led</b>
2008-Feb-01 00:10:02 UTC (GMT +0000) - id = 000000002, Status = succes
+s
<b>2008-Feb-01 00:20:02 UTC (GMT +0000) - id = 000000003, Status = fai
+led</b>
2008-Feb-01 00:30:02 UTC (GMT +0000) - id = 000000004, Status = succes
+s
2008-Feb-01 00:40:02 UTC (GMT +0000) - id = 000000001, Status = succes
+s
2008-Feb-01 00:50:02 UTC (GMT +0000) - id = 000000001, Status = succes
+s
<b>2008-Feb-01 01:00:02 UTC (GMT +0000) - id = 000000001, Status = fai
+led</b>
2008-Feb-01 01:10:02 UTC (GMT +0000) - id = 000000007, Status = succes
+s
<b>2008-Feb-01 01:20:02 UTC (GMT +0000) - id = 000000003, Status = fai
+led</b>
2008-Feb-01 01:30:02 UTC (GMT +0000) - id = 000000009, Status = succes
+s

[download]

ResultLog.txt 

ID               last attempted           attempts
============================================================
000000001        2008-Feb-01 01:00:02     1
000000003        2008-Feb-01 01:20:02     1

[download]


I tried the following but the output wasn't desirable. 

use strict;
use warnings;
use DateTime::Format::Strptime;
# my $Strp = new DateTime::Format::Strptime(pattern     => '%Y-%b-%d %
+T',);
my $Strp = new DateTime::Format::Strptime(pattern     => '%Y-%b-%d %T'
+, on_error => 'croak');
my $infile = 'ReadLog.txt';
my $outfile = 'ReportLog.txt';
my($fh_out, $fh);
my %lookup;
my $status = 'failed';
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 /$status/;
    $_ =~ m/^(.*) UTC.*refs = (\d+)$/;
#    my $dt = $Strp->parse_datetime("$1");
    unless (my $dt = $Strp->parse_datetime($1))
    {
     warn "invalid datetime: $1";
     next;
    }
    my $timestamp = $dt ->epoch();
    my $refs = "$2";
    if ( defined($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]

In reply to Logfile analysis : How to differentiate records with timestamp by tuakilan

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