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Annotation of loncom/debugging_tools/memcached_dump.pl, revision 1.1

1.1     ! raeburn     1: #!/usr/bin/perl -w
        !             2: #
        !             3: # The LearningOnline Network
        !             4: #
        !             5: # memcached_dump.pl - dump key => values from Memcached to standard output, 
        !             6: #                                        unescaping keys if asked to do so.
        !             7: #
        !             8: # $Id: memcached_dump.pl,v 1.1 2016/02/21 11:00:00 raeburn Exp $
        !             9: #
        !            10: # Copyright Michigan State University Board of Trustees
        !            11: #
        !            12: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
        !            13: #
        !            14: # LON-CAPA is free software; you can redistribute it and/or modify
        !            15: # it under the terms of the GNU General Public License as published by
        !            16: # the Free Software Foundation; either version 2 of the License, or
        !            17: # (at your option) any later version.
        !            18: #
        !            19: # LON-CAPA is distributed in the hope that it will be useful,
        !            20: # but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            21: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            22: # GNU General Public License for more details.
        !            23: #
        !            24: # You should have received a copy of the GNU General Public License
        !            25: # along with LON-CAPA; if not, write to the Free Software
        !            26: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            27: #
        !            28: # /home/httpd/html/adm/gpl.txt
        !            29: #
        !            30: # http://www.lon-capa.org/
        !            31: #
        !            32: #################################################
        !            33: use strict;
        !            34: use Cache::Memcached;
        !            35: use Data::Dumper;
        !            36: use Getopt::Long;
        !            37: use lib '/home/httpd/lib/perl/';
        !            38: use LONCAPA;
        !            39: 
        !            40: $SIG{'__WARN__'} = sub { warn $_[0] unless (caller eq "Cache::Memcached"); };
        !            41: 
        !            42: #
        !            43: # Options
        !            44: my ($unesc,$showsize,$help) = (0,0,0);
        !            45: GetOptions("unescape" => \$unesc,
        !            46:            "u"        => \$unesc,
        !            47:            "size"     => \$showsize,
        !            48:            "s"        => \$showsize,
        !            49:            "help"     => \$help);
        !            50: #
        !            51: # Help them out if they ask for it
        !            52: if ($help) {
        !            53:     print <<END;
        !            54: memcached_dump.pl - dump contents of memcache to stdout.
        !            55: Specify --unescape to have all the keys unescaped.
        !            56: Specify --size to show the size of the value stored for each key.
        !            57: Specify names (or parts of names of keys) to look for on the command line.
        !            58: Options:
        !            59:    --help     Display this help.
        !            60:    --unescape Unescape the keys before printing them out.
        !            61:    -u         Same as --unescape
        !            62:    --size     Display the size  of the value stored for each key.
        !            63:    -s         Same as --size
        !            64: Examples:
        !            65:     memcached_dump.pl -u -s
        !            66:     memcached_dump.pl -u dns
        !            67:     memcached_dump.pl -u dns iphost
        !            68: END
        !            69:     exit;
        !            70: }
        !            71: 
        !            72: my @keys;
        !            73: 
        !            74: #
        !            75: # Loop through ARGV getting files.
        !            76: while (my $keyname = shift) {
        !            77:     unless(grep(/^\Q$keyname\E$/,@keys)) {
        !            78:         push(@keys,$keyname);
        !            79:     }
        !            80: }
        !            81: 
        !            82: my $instance = "127.0.0.1:11211";
        !            83: my $memd = new Cache::Memcached {
        !            84:      'servers' => [ $instance],
        !            85:      'debug' => 0,
        !            86: };
        !            87: 
        !            88: my %containers;
        !            89: my $stats = $memd->stats('items');
        !            90: my $items = $stats->{hosts}->{$instance}->{items};
        !            91: foreach my $line (split(/\r\n/,$items)) {
        !            92:      my ($key) = (split(/:/,$line,3))[1];
        !            93:      $containers{$key} = 1;
        !            94: }
        !            95: 
        !            96: my $count = 0;
        !            97: foreach my $container (sort(keys(%containers))) {
        !            98:       my $result = $memd->stats("cachedump $container 0");
        !            99:       my $contents = $result->{hosts}->{$instance}->{"cachedump $container 0"};
        !           100: 
        !           101:       foreach my $item (split(/\r\n/,$contents)) {
        !           102:           my ($escname,$size) = ($item =~ /^ITEM\s+(\S+)\s+\[([^;]+)/);
        !           103:           my $name = $escname;
        !           104:           if ($unesc) {
        !           105:               $name = &unescape($escname);
        !           106:           }
        !           107:           if (@keys) {
        !           108:               my $match = 0;
        !           109:               foreach my $key (@keys) {
        !           110:                    if ($name =~ /\Q$key\E/) {
        !           111:                        $match = 1;
        !           112:                        last;
        !           113:                    }
        !           114:               } 
        !           115:               next unless($match); 
        !           116:           }
        !           117:           my $val = $memd->get($escname);
        !           118:           $count ++;
        !           119:           if ($showsize) {
        !           120:               print "$name $size ".Dumper($val)."\n";
        !           121:           } else {
        !           122:               print "$name ".Dumper($val)."\n";
        !           123:           }
        !           124:       }
        !           125: }
        !           126: $memd->disconnect_all;
        !           127: 
        !           128: if ((@keys) && ($count ==0)) {
        !           129:     if (@keys == 1) {
        !           130:         print "No matches found for $keys[0]\n";
        !           131:     } else {
        !           132:         print "No matches found for any of: ".join(' ',@keys)."\n";
        !           133:     }
        !           134: }
        !           135: