lib/CloudStore/Store.pm

   1 package CloudStore::Store;
   2 use warnings;
   3 use strict;
   4
   5 use autodie;
   6 use JSON::XS;
   7 use File::Path qw(make_path);
   8 use File::Slurp qw();
   9 use Digest::MD5 qw(md5_base64);
  10 use Data::Dump qw(dump);
  11 use Carp qw(confess);
  12 use BerkeleyDB;
  13
  14 use WarnColor;
  15
  16 sub new {
  17         my $class = shift;
  18
  19         my $self = {@_};
  20         bless $self, $class;
  21
  22         die "no dir" unless $self->{dir};
  23         $self->{md5pool} = $self->{dir} . '/md5';
  24
  25         warn "# new ",dump $self if $ENV{DEBUG};
  26
  27         return $self;
  28 }
  29
  30 sub user_set {
  31         my ( $self,$data ) = @_;
  32 }
  33
  34 sub user_get {
  35         my ( $self,$data ) = @_;
  36 }
  37
  38 sub modify_file {
  39         my ( $self,$data ) = @_;
  40
  41 #       if ( my $old = $self->file_get( $data ) ) {
  42 #               $self->usage_decr( $data );
  43 #       }
  44
  45         $self->new_file($data);
  46 }
  47
  48 sub new_file {
  49         my ( $self,$data ) = @_;
  50 #       $self->file_set($data);
  51 #       $self->usage_incr($data);
  52 }
  53
  54 sub remove_file {
  55         my ( $self, $data ) = @_;
  56 #       $self->usage_decr( $data );
  57 }
  58
  59 sub make_dir {
  60         my ( $self, $data ) = @_;
  61
  62 }
  63
  64 sub new_link {
  65         my ( $self, $data ) = @_;
  66
  67         warn "# new_link ",dump $data;
  68
  69         if ( $data->{file} =~ m{^(.*/?)\.send/([^/]+)/(.+)$} ) {
  70                 my ( $dir, $to, $name ) = ( $1, $2, $3 );
  71                 my $path = $self->blob_path($data);
  72                 my $link_to = readlink $path;
  73                 warn "$link_to";
  74                 if ( $link_to =~ s{^\Q/rsyncd-munged/\E}{/} ) {
  75
  76                         my $s = $path;
  77                         $s =~ s{/[^/]+$}{}; # strip filename
  78                         while ( $link_to =~ s{/../}{/} ) {
  79                                 $s =~ s{/[^/]+$}{} || die "can't strip $s";
  80                                 warn "## simplify $s $link_to\n";
  81                         }
  82                         $s .= $link_to;
  83
  84                         my $d = $self->blob_path({
  85                                 pid => $data->{pid},
  86                                 file => $name
  87                         });
  88
  89                         # $name can contain directories so we must create them
  90                         my $to_dir = $d;
  91                         $to_dir =~ s{/[^/]+$}{};
  92                         make_path $to_dir if ! -e $to_dir;
  93
  94                         if ( ! -e $s ) {
  95                                 warn "ERROR: can't find source $s";
  96                         } else {
  97
  98                                 warn "link $s -> $d\n";
  99                                 link $s, $d;
 100
 101                                 my ($l,$f) = ($1,$2) if $s =~ m{users/([^/]+)/blob/(.+)};
 102
 103 #                               my $origin = $self->file_get({
 104 #                                       login => $l,
 105 #                                       file  => $f,
 106 #                               });
 107 #                               $self->new_file($origin);
 108                                 warn "INFO: sent file ",dump($l,$f);
 109 #                               my $md5 = $self->{md5}->{$s} || die "no md5 for $s";
 110 #                               $self->{md5}->{$d} = $md5;
 111                         }
 112
 113
 114                 } else {
 115                         warn "ERROR: can't SEND To:$to Name:$name Link:$link_to";
 116                 }
 117         }
 118 }
 119
 120 sub rsync_log {
 121         my ( $self, $data ) = @_;
 122         if ( $data =~ m/\[(\d+)\] rsync \w+ (\S+) \w+ (\S+)/ ) {
 123                 my ( $pid, $module, $login ) = ( $1, $2, $3 );
 124                 $login =~ s/\@.+//;
 125                 my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
 126                         getpwnam $login;
 127
 128                 my %md5;
 129                 my $db = tie %md5, 'BerkeleyDB::Hash',
 130                         -Filename => "$dir/.md5.db",
 131                         -Flags => DB_CREATE
 132                 ;
 133
 134                 $self->{pid}->{$pid} = {
 135                         login => $login,
 136                         uid => $uid,
 137                         gid => $gid,
 138                         email => $email,
 139                         dir => $dir,
 140                         shell => $shell,
 141                         md5 => \%md5,
 142                 };
 143
 144         } elsif ( $data =~ m/\[(\d+)\] sent \d+ bytes\s+received \d+ bytes/ ) {
 145                 my $pid = $1;
 146                 untie $self->{pid}->{$pid}->{md5} && warn "md5 hash untied";
 147                 warn "removed ", dump
 148                 delete $self->{pid}->{$pid};
 149         } else {
 150                 warn "## rsync_log $data";
 151         }
 152 }
 153
 154 sub blob_path {
 155         my ( $self, $data ) = @_;
 156         my $blob = $self->{pid}->{ $data->{pid} }->{dir} || die "no dir for $data->{pid} in ",dump( $self->{pid} );
 157         $blob .= '/' . $data->{file};
 158         return $blob;
 159 }
 160
 161
 162 sub rsync_transfer {
 163         my ( $self,$data ) = @_;
 164
 165         my $path = $self->blob_path($data);
 166
 167         if ( $data->{itemize} =~ m/^[c>]([fdL])/ ) { # received change/create
 168                 my $type = $1;
 169
 170                 if ( $type eq 'f' ) {
 171                         $self->modify_file( $data );
 172                         $self->dedup( $data, $path );
 173                 } elsif ( $type eq 'd' ) {
 174                         $self->make_dir( $data );
 175                 } elsif ( $type eq 'L' ) {
 176                         $self->new_link( $data );
 177                 } else {
 178                         die "unknown type $type ", dump $data;
 179                 }
 180         } elsif ( $data->{itemize} =~ m/\*deleting/ ) {
 181                 $self->remove_file($data);
 182         }
 183         return $data;
 184 }
 185
 186 sub md5pool {
 187         my ( $self, $data ) = @_;
 188
 189         my $pool = $self->{md5pool} || die "no md5pool in ",dump $self;
 190         mkdir $pool unless -e $pool;
 191
 192         my $md5 = $data->{md5} || die "no md5 in ",dump $data;
 193         my $path = $self->blob_path($data);
 194
 195         if ( -e "$pool/$md5" ) {
 196                 warn "dedup hit $md5 $path\n";
 197                 my $dedup = $path . '.dedup';
 198                 rename $path, $dedup;
 199                 link "$pool/$md5", $path;
 200                 unlink $dedup;
 201                 # FIXME fix perms?
 202         } else {
 203                 link $path, "$pool/$md5";
 204         }
 205
 206         my $md5hash = $self->{pid}->{ $data->{pid} }->{md5} || die "no md5 for $data->{pid} in ",dump( $self->{pid} );
 207         $md5hash->{ $data->{file} } = $md5;
 208 }
 209
 210 my $empty_md5 = " " x 32;
 211
 212 sub dedup {
 213         my ( $self, $data, $path ) = @_;
 214
 215         if ( $data->{file} =~ /^(.+\/)?md5sum$/ ) {
 216                 my $dir = $1;
 217                 my $imported = 0;
 218                 warn "IMPORT ", $data->{file}, "\n";
 219                 open(my $md5sum, '<', $path);
 220                 while(<$md5sum>) {
 221                         chomp;
 222                         my ( $md5, $file ) = split(/\s+/,$_,2);
 223                         if ( ! -e "$self->{md5path}/$md5" ) {
 224                                 warn "MISSING $md5 $file\n";
 225                                 next;
 226                         }
 227                         my $new = {
 228                                 pid => $data->{pid},
 229                                 file => "$dir$file",
 230                                 md5 => $md5,
 231                         };
 232                         my $new_path = $self->blob_path($new);
 233                         if ( ! -e $new_path ) {
 234                                 # create path from md5sum file
 235                                 my $only_dir = $1 if $new =~ m{^(.+)/[^/]+$};
 236                                 make_path $only_dir unless -d $only_dir;
 237                                 $imported += link "$self->{md5path}/$md5", $new_path;
 238                                 $self->new_file($new);
 239                                 warn "import from $path ",dump($new);
 240                                 $self->md5pool( $new );
 241                         } else {
 242                                 $self->md5pool( $new );
 243                         }
 244                 }
 245                 print "INFO imported $imported files from ",dump($data);
 246         }
 247
 248         if ( $data->{md5} ne $empty_md5 ) {
 249                 $self->md5pool( $data );
 250         } else {
 251                 warn "empty md5", dump $data;
 252         }
 253 }
 254
 255 1;