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         my $md5 = $self->md5_get( $data );
 159         return unless $md5; # directories don't have md5sums
 160         my $path = $self->{md5pool} . '/' . $md5;
 161         my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
 162                 $atime,$mtime,$ctime,$blksize,$blocks)
 163                         = stat($path);
 164
 165         my $user = $self->{api}->user_info($data->{login});
 166
 167         if ( $nlink == 1 && $uid == $user->{uid} ) {
 168                 $self->append( $user, 'removed', -$size, $uid, $data->{file} );
 169                 my $id = getpwnam 'md5';
 170                 chown $id,$gid, $path;
 171                 warn "# chown $id $gid $path";
 172         }
 173
 174         $self->api->append_meta('md5sum', $user, 'delete', $data->{file} );
 175 }
 176
 177 sub make_dir {
 178         my ( $self, $data ) = @_;
 179
 180 }
 181
 182 sub new_link {
 183         my ( $self, $data ) = @_;
 184
 185         warn "# new_link ",dump $data;
 186
 187 =for removed
 188
 189         if ( $data->{file} =~ m{^(.*/?)\.send/([^/]+)/(.+)$} ) {
 190                 my ( $dir, $to, $name ) = ( $1, $2, $3 );
 191                 my $path = $self->blob_path($data);
 192                 my $link_to = readlink $path;
 193                 warn "$link_to";
 194                 if ( $link_to =~ s{^\Q/rsyncd-munged/\E}{/} ) {
 195
 196                         my $s = $path;
 197                         $s =~ s{/[^/]+$}{}; # strip filename
 198                         while ( $link_to =~ s{/../}{/} ) {
 199                                 $s =~ s{/[^/]+$}{} || die "can't strip $s";
 200                                 warn "## simplify $s $link_to\n";
 201                         }
 202                         $s .= $link_to;
 203
 204                         my $d = $self->blob_path({
 205                                 pid => $data->{pid},
 206                                 file => $name
 207                         });
 208
 209                         # $name can contain directories so we must create them
 210                         mkbasedir $d;
 211
 212                         if ( ! -e $s ) {
 213                                 warn "ERROR: can't find source $s";
 214                         } else {
 215
 216                                 warn "link $s -> $d\n";
 217                                 link $s, $d;
 218
 219                                 my ($l,$f) = ($1,$2) if $s =~ m{users/([^/]+)/blob/(.+)};
 220
 221 #                               my $origin = $self->file_get({
 222 #                                       login => $l,
 223 #                                       file  => $f,
 224 #                               });
 225 #                               $self->new_file($origin);
 226                                 warn "INFO: sent file ",dump($l,$f);
 227                                 my $md5 = $self->md5sum($data)->get($s);
 228                                 $self->md5sum({ login => $to })->put($d => $md5 );
 229                                 # FIXME broken!
 230                         }
 231
 232
 233                 } else {
 234                         warn "ERROR: can't SEND To:$to Name:$name Link:$link_to";
 235                 }
 236         }
 237
 238 =cut
 239
 240 }
 241
 242 sub init_pid_login {
 243         my ( $self, $pid, $login ) = @_;
 244
 245         $login =~ s/\@.+//;
 246         $self->{pid}->{$pid} = $self->{api}->user_info($login);
 247
 248         warn "created $pid";
 249 }
 250
 251 sub cleanup_pid {
 252         my ( $self, $pid ) = @_;
 253
 254         delete $self->{pid}->{$pid};
 255         warn "removed $pid";
 256 }
 257
 258 sub rsync_log {
 259         my ( $self, $data ) = @_;
 260         if ( $data =~ m/\[(\d+)\] rsync \w+ (\S+) \w+ (\S+)/ ) {
 261                 my ( $pid, $module, $login ) = ( $1, $2, $3 );
 262                 $self->init_pid_login( $pid, $login );
 263         } elsif ( $data =~ m/\[(\d+)\] sent \S+ bytes\s+received \S+ bytes/ ) {
 264                 my $pid = $1;
 265                 $self->cleanup_pid( $pid );
 266         } else {
 267                 warn "## rsync_log $data";
 268         }
 269 }
 270
 271 sub blob_path {
 272         my ( $self, $data, $path ) = @_;
 273         my $blob = $self->{pid}->{ $data->{pid} }->{dir};
 274         if ( ! $blob ) {
 275                 warn "ERROR: $data->{pid} not found, possible restart?";
 276                 $self->init_pid_login( $data->{pid}, $data->{login} );
 277                 $blob = $self->{pid}->{ $data->{pid} }->{dir} || die "no dir for ", dump( $self->{pid}->{ $data->{pid} } );
 278         }
 279         $blob .= '/' . ( defined $path ? $path : $data->{file} );
 280         return $blob;
 281 }
 282
 283
 284 sub rsync_transfer {
 285         my ( $self,$data ) = @_;
 286
 287         my $path = $self->blob_path($data);
 288
 289         if ( $data->{itemize} =~ m/^[c>]([fdL])/ ) { # received change/create
 290                 my $type = $1;
 291
 292                 if ( $type eq 'f' ) {
 293                         $self->modify_file( $data ) && # selective dedup
 294                         $self->dedup( $data, $path );
 295                 } elsif ( $type eq 'd' ) {
 296                         $self->make_dir( $data );
 297                 } elsif ( $type eq 'L' ) {
 298                         $self->new_link( $data );
 299                 } else {
 300                         die "unknown type $type ", dump $data;
 301                 }
 302         } elsif ( $data->{itemize} =~ m/\*deleting/ ) {
 303                 $self->removed_file($data);
 304         } else {
 305                 warn "IGNORED ",dump($data) if $ENV{DEBUG};
 306         }
 307         return $data;
 308 }
 309
 310 sub append {
 311         my $self = shift @_;
 312         $self->{api}->append( @_ );
 313 }
 314
 315 sub md5pool {
 316         my ( $self, $data ) = @_;
 317
 318         my $pool = $self->{md5pool} || die "no md5pool in ",dump $self;
 319         mkdir $pool unless -e $pool;
 320
 321         my $md5 = $data->{md5} || die "no md5 in ",dump $data;
 322         my $path = $self->blob_path($data);
 323
 324         if ( ! -e $path ) {
 325                 warn "ERROR missing path $path";
 326                 return;
 327         }
 328
 329         my $pool_md5 = "$pool/$md5";
 330
 331         if ( -e $pool_md5 ) {
 332                 warn "dedup hit $md5 $path\n";
 333
 334                 my ($pool_uid,$pool_size) = (stat($pool_md5))[4,7];
 335                 my $user = $self->{api}->user_info( $data->{login} );
 336
 337                 if ( $pool_uid != $user->{uid} ) {
 338                         if ( $pool_uid != $self->{api}->{md5}->{uid} ) {
 339                                 chown $self->{api}->{md5}->{uid}, $self->{api}->{md5}->{gid}, $pool_md5;
 340                                 chmod oct("0444"), $pool_md5;
 341                                 my $steal_user = $self->{api}->user_info( $pool_uid );
 342                                 $self->append( $steal_user, 'dedup-steal', $pool_size, $pool_uid, $data->{file} );
 343                         }
 344                         $self->append( $user, 'dedup', $pool_size, $pool_uid, $data->{file} );
 345                 }
 346
 347                 my $dedup = $path . '.dedup';
 348                 rename $path, $dedup;
 349                 link "$pool/$md5", $path;
 350                 unlink $dedup;
 351         } else {
 352                 link $path, "$pool/$md5";
 353                 warn "dedup +++ $md5 $path";
 354         }
 355
 356         $self->md5_set( $path => $md5 );
 357
 358         $self->api->append_meta('md5sum', $data->{login}, $md5, $data->{file} );
 359 }
 360
 361 my $empty_md5 = " " x 32;
 362
 363 sub dedup {
 364         my ( $self, $data, $path ) = @_;
 365
 366         if ( $data->{file} =~ /^(.+\/)?md5sum$/ ) {
 367                 my $dir = $1 || '';
 368                 my $imported = 0;
 369                 warn "IMPORT ", $data->{file}, "\n";
 370                 open(my $md5sum, '<', $path);
 371                 while(<$md5sum>) {
 372                         chomp;
 373                         my ( $md5, $file ) = split(/\s+/,$_,2);
 374                         if ( ! -e "$self->{md5pool}/$md5" ) {
 375                                 warn "MISSING $md5 $file\n";
 376                                 next;
 377                         }
 378                         my $new = {
 379                                 login => $data->{login},
 380                                 pid => $data->{pid},
 381                                 file => "$dir$file",
 382                                 md5 => $md5,
 383                         };
 384                         my $new_path = $self->blob_path($new);
 385                         if ( ! -e $new_path ) {
 386                                 $self->{api}->send_file( 'md5' => $md5, $data->{login}, "$dir$file" );
 387                                 $self->md5pool( $new );
 388                         } else {
 389                                 $self->md5pool( $new );
 390                         }
 391                 }
 392                 warn "INFO imported $imported files from ",dump($data);
 393
 394                 return; # don't put md5sum files into pool
 395         }
 396
 397         if ( $data->{md5} ne $empty_md5 ) {
 398                 $self->md5pool( $data );
 399         } else {
 400                 warn "empty md5", dump $data;
 401         }
 402 }
 403
 404 1;