Quelle stackcollapse-java-exceptions.pl Sprache: Shell

#!/usr/bin/perl -w
#
# stackcolllapse-java-exceptions.pl collapse java exceptions (found in logs) into single lines.
#
# Parses Java error stacks found in a log file and outputs them as
# single lines, with methods separated by semicolons, and then a space and an
# occurrence count. Inspired by stackcollapse-jstack.pl except that it does
# not act as a performance profiler.
#
# It can be useful if a Java process dumps a lot of different stacks in its logs
# and you want to quickly identify the biggest culprits.
#
# USAGE: ./stackcollapse-java-exceptions.pl infile > outfile
#
# Copyright 2018 Paul de Verdiere. All rights reserved.

use strict;
use Getopt::Long;

# tunables
my $shorten_pkgs = 0;  # shorten package names
my $no_pkgs = 0;      # really shorten package names!!
my $help = 0;

sub usage {
die <<USAGE_END;
USAGE: $0 [options] infile > outfile\n
--shorten-pkgs : shorten package names
  --no-pkgs      : suppress package names (makes SVG much more readable)

USAGE_END
}

GetOptions(
'shorten-pkgs!'   => \$shorten_pkgs,
'no-pkgs!'        => \$no_pkgs,
'help'            => \$help,
) or usage();
$help && usage();

my %collapsed;

sub remember_stack {
my ($stack, $count) = @_;
$collapsed{$stack} += $count;
}

my @stack;

foreach (<>) {
chomp;

  if (/^\s*at ([^\(]*)/) {
  my $func = $1;
  if ($shorten_pkgs || $no_pkgs) {
   my ($pkgs, $clsFunc) = ( $func =~ m/(.*\.)([^.]+\.[^.]+)$/ );
   $pkgs =~ s/(\w)\w*/$1/g;
      $func = $no_pkgs ? $clsFunc: $pkgs . $clsFunc;
  }
  unshift @stack, $func;
} elsif (@stack ) {
  next if m/.*waiting on .*/;
  remember_stack(join(";", @stack), 1) if @stack;
  undef @stack;
  }
}

remember_stack(join(";", @stack), 1) if @stack;

foreach my $k (sort { $a cmp $b } keys %collapsed) {
print "$k $collapsed{$k}\n";
}

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