| #!/usr/bin/perl |
| # |
| # log-grep-recent - select only recent messages from a mass-check log |
| # [optionally only select messages with set=x] |
| |
| |
| sub usage { die " |
| |
| usage: log-grep-recent --months num_months [--set x] < full.log > recent.log |
| |
| \n"; } |
| |
| # <@LICENSE> |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to you under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at: |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # </@LICENSE> |
| |
| use strict; |
| use warnings; |
| |
| my $months = 0; |
| my $set; |
| use Getopt::Long qw(:config bundling auto_help); |
| GetOptions( |
| "m|months=f" => \$months, |
| "s|set=f" => \$set |
| ) or usage(); |
| |
| usage() unless ($months > 0); |
| |
| my $roughly1month = (24 * 60 * 60 * 30); |
| my $now = time; |
| my $cutoff = $now - (($roughly1month * $months) + ($roughly1month - 1)); |
| |
| my %buckets = (); |
| |
| while (<>) { |
| if (/^[Y\.]\s+-?\d+.*?\btime=(\d+)\b.*?\bset=(\d)\b/) { |
| my $t = $1; |
| my $s = $2; |
| |
| if (defined $set && $set != $s) { |
| next; |
| } |
| |
| my $monthsago = int (($now - $t) / $roughly1month); |
| $buckets{$monthsago}++; |
| |
| if ($t >= $cutoff) { |
| print; |
| } else { |
| next; |
| } |
| } |
| elsif (/^#/) { |
| next; # comments |
| } |
| else { |
| warn "unparseable line: $_"; |
| } |
| } |
| |
| my $numtotal = 0; |
| foreach my $m (keys %buckets) { |
| $numtotal += $buckets{$m}; |
| } |
| |
| warn "Month distribution:\n\n"; |
| my $cumul = 0; |
| foreach my $m (sort { $a <=> $b } keys %buckets) { |
| $cumul += $buckets{$m}; |
| warn sprintf ("%8d (%3d%%) %8d %2d-%d months old\n", |
| $cumul, int(($cumul / ($numtotal||0.001)) * 100), |
| $buckets{$m}, $m, $m+1); |
| } |
| |