lib/CloudStore/Store.pm

   1 package CloudStore::Store;
   2 use warnings;
   3 use strict;
   4
   5 use lib 'lib';
   6 use base qw(CloudStore::MD5sum);
   7 use CloudStore::API;
   8
   9 use autodie;
  10 use JSON::XS;
  11 use File::Path qw(make_path);
  12 use File::Slurp qw();
  13 use Digest::MD5 qw(md5_base64);
  14 use Data::Dump qw(dump);
  15 use Carp qw(confess);
  16
  17 use WarnColor;
  18
  19 sub new {
  20         my ($class,$group) = @_;
  21
  22         my $self = {
  23                 api => CloudStore::API->new( $group ),
  24         };
  25         bless $self, $class;
  26
  27         $self->{md5pool} = $self->{api}->{md5}->{dir};
  28
  29         warn "# new ",dump $self if $ENV{DEBUG};
  30
  31         return $self;
  32 }
  33
  34 sub api { $_[0]->{api} }
  35
  36 sub mkbasedir {
  37         my $dir = shift;
  38         $dir =~ s{/[^/]+$}{}; # strip filename
  39         mkdir $dir unless -e $dir;
  40 }
  41
  42 sub modify_file {
  43         my ( $self,$data ) = @_;
  44
  45 =for removed
  46
  47         if ( $data->{file} =~ m{^(.*/)?.sync/send/([^/]+)$} ) {
  48                 my $from_dir = $1;
  49                 warn "SEND $2 from $from_dir\n";
  50                 my $sent_files;
  51                 open(my $send, '<', $self->blob_path($data) );
  52                 while(<$send>) {
  53                         s/[\n\r]+$//;
  54
  55                         my ( $to, $file ) = split(/\s+/,$_,2);
  56                         my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
  57                                 getpwnam $to;
  58
  59                         my $from = $data;
  60                         $from->{file} = $from_dir . $file;
  61                         my $from_path = $self->blob_path($from);
  62
  63                         if ( ! -r $from_path ) {
  64                                 warn "ERROR: $from_path: $!";
  65                                 next;
  66                         }
  67
  68                         my $to_path = "$dir/received/$file";
  69                         mkbasedir $to_path;
  70
  71                         warn "SEND $from_path -> $to_path\n";
  72                         unlink $to_path if -e $to_path; # FIXME why we need this?
  73                         $sent_files->{$to} += link $from_path, $to_path;
  74                         # FIXME cross-shard
  75                         my $md5 = $self->md5sum($data)->get( $from_dir . $file ) || warn "no md5 for $from_dir$file";
  76                         $self->md5sum({login => $to})->put( "/received/$file" => $md5 );
  77                 }
  78
  79                 warn "SENT ",dump $sent_files;
  80
  81                 return 0; # skip dedup
  82         } elsif ( $data->{file} =~ m{^(.*/)?.sync/pending/([^/]+)$} ) {
  83                 my $from_dir = $1;
  84                 warn "PENDIG $2 from $from_dir";
  85                 open(my $pend, '<', $self->blob_path($data) );
  86                 while(<$pend>) {
  87                         s/[\n\r]+$//;
  88
  89                         if ( m/^DELETED\#(.+)$/ ) {
  90                                 my $path = $self->blob_path($data => $from_dir . $1 );
  91                                 if ( -e $path ) {
  92                                         warn "UNLINK $path";
  93                                         -d $path ? rmdir $path : unlink $path || warn "ERROR: unlink $path $!";
  94                                         next;
  95                                 } else {
  96                                         warn "MISSING $path to unlink";
  97                                         next;
  98                                 }
  99                         } elsif ( ! /^(MOVED|RENAMED)\#/ ) {
 100                                 warn "skip $_\n";
 101                                 next;
 102                         }
 103
 104                         my ( undef, $from, $to ) = split(/\#/,$_,3);
 105
 106                         my ( $from_path, $to_path ) = map {
 107                                 my $tmp = $data;
 108                                 $tmp->{file} = $from_dir . $_;
 109                                 $self->blob_path($tmp);
 110                         } ( $from, $to );
 111
 112                         if ( ! -e $from_path ) {
 113                                 warn "SKIPPED $from_path: $!";
 114                                 next;
 115                         }
 116
 117                         warn "MV $from_path -> $to_path";
 118                         mkbasedir $to_path;
 119                         rename $from_path, $to_path;
 120
 121                         my $md5 = $self->md5sum($data)->get( $from_dir . $from );
 122                         if ( ! $md5 ) {
 123                                 warn "ERROR: no md5sum $from_dir $from " unless $md5;
 124                                 next;
 125                         }
 126
 127                         $self->md5sum($data)->out( $from_dir . $from );
 128                         $self->md5sum($data)->put( $from_dir . $to => $md5 );
 129                         $self->md5sum_close($data);
 130
 131                         warn "$md5 moved to $from_dir $to";
 132                 }
 133
 134                 return 0; # skip dedup
 135         }
 136
 137 =cut
 138
 139         if ( $data->{file} =~ m{^(.*/)?.sync/} ) {
 140                 # ignore .sync/ files from client
 141                 return 0;
 142         }
 143
 144         #return $file->{size} > 4096 ? 1 : 0; # FIXME
 145         return 1; # dedup
 146 }
 147
 148 # never called by rsync directly!
 149 sub new_file {
 150         my ( $self,$data ) = @_;
 151 #       $self->file_set($data);
 152 }
 153
 154 # client doesn't issue --delete
 155 sub removed_file {
 156         my ( $self, $data ) = @_;
 157
 158 =for removed
 159         my $path = $self->blob_path( $data );
 160         my $md5 = $self->md5_get( $path );
 161         return unless $md5; # directories don't have md5sums
 162         my $path = $self->{md5pool} . '/' . $md5;
 163         my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
 164                 $atime,$mtime,$ctime,$blksize,$blocks)
 165                         = stat($path);
 166
 167         my $user = $self->{api}->user_info($data->{login});
 168
 169         if ( $nlink == 1 && $uid == $user->{uid} ) {
 170                 $self->append( $user, 'removed', -$size, $uid, $data->{file} );
 171                 my $id = getpwnam 'md5';
 172                 chown $id,$gid, $path;
 173                 warn "# chown $id $gid $path";
 174         }
 175
 176         $self->api->append_meta('md5sum', $user, 'delete', $data->{file} );
 177 =cut
 178
 179 }
 180
 181 sub make_dir {
 182         my ( $self, $data ) = @_;
 183
 184 }
 185
 186 sub new_link {
 187         my ( $self, $data ) = @_;
 188
 189         warn "# new_link ",dump $data;
 190
 191 =for removed
 192
 193         if ( $data->{file} =~ m{^(.*/?)\.send/([^/]+)/(.+)$} ) {
 194                 my ( $dir, $to, $name ) = ( $1, $2, $3 );
 195                 my $path = $self->blob_path($data);
 196                 my $link_to = readlink $path;
 197                 warn "$link_to";
 198                 if ( $link_to =~ s{^\Q/rsyncd-munged/\E}{/} ) {
 199
 200                         my $s = $path;
 201                         $s =~ s{/[^/]+$}{}; # strip filename
 202                         while ( $link_to =~ s{/../}{/} ) {
 203                                 $s =~ s{/[^/]+$}{} || die "can't strip $s";
 204                                 warn "## simplify $s $link_to\n";
 205                         }
 206                         $s .= $link_to;
 207
 208                         my $d = $self->blob_path({
 209                                 pid => $data->{pid},
 210                                 file => $name
 211                         });
 212
 213                         # $name can contain directories so we must create them
 214                         mkbasedir $d;
 215
 216                         if ( ! -e $s ) {
 217                                 warn "ERROR: can't find source $s";
 218                         } else {
 219
 220                                 warn "link $s -> $d\n";
 221                                 link $s, $d;
 222
 223                                 my ($l,$f) = ($1,$2) if $s =~ m{users/([^/]+)/blob/(.+)};
 224
 225 #                               my $origin = $self->file_get({
 226 #                                       login => $l,
 227 #                                       file  => $f,
 228 #                               });
 229 #                               $self->new_file($origin);
 230                                 warn "INFO: sent file ",dump($l,$f);
 231                                 my $md5 = $self->md5sum($data)->get($s);
 232                                 $self->md5sum({ login => $to })->put($d => $md5 );
 233                                 # FIXME broken!
 234                         }
 235
 236
 237                 } else {
 238                         warn "ERROR: can't SEND To:$to Name:$name Link:$link_to";
 239                 }
 240         }
 241
 242 =cut
 243
 244 }
 245
 246 sub init_pid_login {
 247         my ( $self, $pid, $login ) = @_;
 248
 249         $login =~ s/\@.+//;
 250         $self->{pid}->{$pid} = $self->{api}->user_info($login);
 251
 252         warn "created $pid";
 253 }
 254
 255 sub cleanup_pid {
 256         my ( $self, $pid ) = @_;
 257
 258         delete $self->{pid}->{$pid};
 259         warn "removed $pid";
 260 }
 261
 262 sub rsync_log {
 263         my ( $self, $data ) = @_;
 264         if ( $data =~ m/\[(\d+)\] rsync \w+ (\S+) \w+ (\S+)/ ) {
 265                 my ( $pid, $module, $login ) = ( $1, $2, $3 );
 266                 $self->init_pid_login( $pid, $login );
 267         } elsif ( $data =~ m/\[(\d+)\] sent \S+ bytes\s+received \S+ bytes/ ) {
 268                 my $pid = $1;
 269                 $self->cleanup_pid( $pid );
 270         } else {
 271                 warn "## rsync_log $data" if $ENV{DEBUG};
 272         }
 273 }
 274
 275 sub blob_path {
 276         my ( $self, $data, $path ) = @_;
 277         my $blob = $self->{pid}->{ $data->{pid} }->{dir};
 278         if ( ! $blob ) {
 279                 warn "ERROR: $data->{pid} not found, possible restart?";
 280                 $self->init_pid_login( $data->{pid}, $data->{login} );
 281                 $blob = $self->{pid}->{ $data->{pid} }->{dir} || die "no dir for ", dump( $self->{pid}->{ $data->{pid} } );
 282         }
 283         $blob .= '/' . ( defined $path ? $path : $data->{file} );
 284         return $blob;
 285 }
 286
 287
 288 sub rsync_transfer {
 289         my ( $self,$data ) = @_;
 290
 291         my $path = $self->blob_path($data);
 292
 293         if ( $data->{itemize} =~ m/^[c>]([fdL])/ ) { # received change/create
 294                 my $type = $1;
 295
 296                 if ( $type eq 'f' ) {
 297                         $self->modify_file( $data ) && # selective dedup
 298                         $self->dedup( $data, $path );
 299                 } elsif ( $type eq 'd' ) {
 300                         $self->make_dir( $data );
 301                 } elsif ( $type eq 'L' ) {
 302                         $self->new_link( $data );
 303                 } else {
 304                         die "unknown type $type ", dump $data;
 305                 }
 306                 $self->api->refresh_file_list( $data->{login} );
 307         } elsif ( $data->{itemize} =~ m/\*deleting/ ) {
 308                 $self->removed_file($data);
 309                 $self->api->refresh_file_list( $data->{login} );
 310         } else {
 311                 warn "IGNORED ",dump($data) if $ENV{DEBUG};
 312         }
 313         return $data;
 314 }
 315
 316 sub append {
 317         my $self = shift @_;
 318         $self->{api}->append( @_ );
 319 }
 320
 321 sub md5pool {
 322         my ( $self, $data ) = @_;
 323
 324         my $pool = $self->{md5pool} || die "no md5pool in ",dump $self;
 325         mkdir $pool unless -e $pool;
 326
 327         my $md5 = $data->{md5} || die "no md5 in ",dump $data;
 328         my $path = $self->blob_path($data);
 329
 330         if ( ! -e $path ) {
 331                 warn "ERROR missing path $path";
 332                 return;
 333         }
 334
 335         my $pool_md5 = "$pool/$md5";
 336
 337         if ( -e $pool_md5 ) {
 338                 warn "dedup hit $md5 $path\n";
 339
 340                 my ($pool_uid,$pool_size) = (stat($pool_md5))[4,7];
 341                 my $user = $self->{api}->user_info( $data->{login} );
 342
 343                 if ( $pool_uid != $user->{uid} ) {
 344                         if ( $pool_uid != $self->{api}->{md5}->{uid} ) {
 345                                 chown $self->{api}->{md5}->{uid}, $self->{api}->{md5}->{gid}, $pool_md5;
 346                                 chmod oct("0444"), $pool_md5;
 347                                 my $steal_user = $self->{api}->user_info( $pool_uid );
 348                                 $self->append( $steal_user, 'dedup-steal', $pool_size, $pool_uid, $data->{file} );
 349                         }
 350                         $self->append( $user, 'dedup', $pool_size, $pool_uid, $data->{file} );
 351                 }
 352
 353                 my $dedup = $path . '.dedup';
 354                 rename $path, $dedup;
 355                 link "$pool/$md5", $path;
 356                 unlink $dedup;
 357         } else {
 358                 link $path, "$pool/$md5";
 359                 warn "dedup +++ $md5 $path";
 360         }
 361
 362         $self->md5_set( $path => $md5 );
 363
 364         $self->api->append_meta('md5sum', $data->{login}, $md5, $data->{file} );
 365 }
 366
 367 my $empty_md5 = " " x 32;
 368
 369 sub dedup {
 370         my ( $self, $data, $path ) = @_;
 371
 372         if ( $data->{file} =~ /^(.+\/)?md5sum$/ ) {
 373                 my $dir = $1 || '';
 374                 my $imported = 0;
 375                 warn "IMPORT ", $data->{file}, "\n";
 376                 open(my $md5sum, '<', $path);
 377                 while(<$md5sum>) {
 378                         chomp;
 379                         my ( $md5, $file ) = split(/\s+/,$_,2);
 380                         if ( ! -e "$self->{md5pool}/$md5" ) {
 381                                 warn "MISSING $md5 $file\n";
 382                                 next;
 383                         }
 384                         my $new = {
 385                                 login => $data->{login},
 386                                 pid => $data->{pid},
 387                                 file => "$dir$file",
 388                                 md5 => $md5,
 389                         };
 390                         my $new_path = $self->blob_path($new);
 391                         if ( ! -e $new_path ) {
 392                                 $self->{api}->send_file( 'md5' => $md5, $data->{login}, "$dir$file" );
 393                                 $self->md5pool( $new );
 394                         } else {
 395                                 $self->md5pool( $new );
 396                         }
 397                 }
 398                 warn "INFO imported $imported files from ",dump($data);
 399
 400                 return; # don't put md5sum files into pool
 401         }
 402
 403         if ( $data->{md5} ne $empty_md5 ) {
 404                 $self->md5pool( $data );
 405         } else {
 406                 warn "empty md5", dump $data;
 407         }
 408 }
 409
 410 1;