lib/CloudStore/Store.pm

   1 package CloudStore::Store;
   2 use warnings;
   3 use strict;
   4
   5 use lib 'lib';
   6 use base '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 mkbasedir {
  35         my $dir = shift;
  36         $dir =~ s{/[^/]+$}{}; # strip filename
  37         mkdir $dir unless -e $dir;
  38 }
  39
  40 sub modify_file {
  41         my ( $self,$data ) = @_;
  42
  43 =for removed
  44
  45         if ( $data->{file} =~ m{^(.*/)?.sync/send/([^/]+)$} ) {
  46                 my $from_dir = $1;
  47                 warn "SEND $2 from $from_dir\n";
  48                 my $sent_files;
  49                 open(my $send, '<', $self->blob_path($data) );
  50                 while(<$send>) {
  51                         s/[\n\r]+$//;
  52
  53                         my ( $to, $file ) = split(/\s+/,$_,2);
  54                         my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
  55                                 getpwnam $to;
  56
  57                         my $from = $data;
  58                         $from->{file} = $from_dir . $file;
  59                         my $from_path = $self->blob_path($from);
  60
  61                         if ( ! -r $from_path ) {
  62                                 warn "ERROR: $from_path: $!";
  63                                 next;
  64                         }
  65
  66                         my $to_path = "$dir/received/$file";
  67                         mkbasedir $to_path;
  68
  69                         warn "SEND $from_path -> $to_path\n";
  70                         unlink $to_path if -e $to_path; # FIXME why we need this?
  71                         $sent_files->{$to} += link $from_path, $to_path;
  72                         # FIXME cross-shard
  73                         my $md5 = $self->md5sum($data)->get( $from_dir . $file ) || warn "no md5 for $from_dir$file";
  74                         $self->md5sum({login => $to})->put( "/received/$file" => $md5 );
  75                 }
  76
  77                 warn "SENT ",dump $sent_files;
  78
  79                 return 0; # skip dedup
  80         } elsif ( $data->{file} =~ m{^(.*/)?.sync/pending/([^/]+)$} ) {
  81                 my $from_dir = $1;
  82                 warn "PENDIG $2 from $from_dir";
  83                 open(my $pend, '<', $self->blob_path($data) );
  84                 while(<$pend>) {
  85                         s/[\n\r]+$//;
  86
  87                         if ( m/^DELETED\#(.+)$/ ) {
  88                                 my $path = $self->blob_path($data => $from_dir . $1 );
  89                                 if ( -e $path ) {
  90                                         warn "UNLINK $path";
  91                                         -d $path ? rmdir $path : unlink $path || warn "ERROR: unlink $path $!";
  92                                         next;
  93                                 } else {
  94                                         warn "MISSING $path to unlink";
  95                                         next;
  96                                 }
  97                         } elsif ( ! /^(MOVED|RENAMED)\#/ ) {
  98                                 warn "skip $_\n";
  99                                 next;
 100                         }
 101
 102                         my ( undef, $from, $to ) = split(/\#/,$_,3);
 103
 104                         my ( $from_path, $to_path ) = map {
 105                                 my $tmp = $data;
 106                                 $tmp->{file} = $from_dir . $_;
 107                                 $self->blob_path($tmp);
 108                         } ( $from, $to );
 109
 110                         if ( ! -e $from_path ) {
 111                                 warn "SKIPPED $from_path: $!";
 112                                 next;
 113                         }
 114
 115                         warn "MV $from_path -> $to_path";
 116                         mkbasedir $to_path;
 117                         rename $from_path, $to_path;
 118
 119                         my $md5 = $self->md5sum($data)->get( $from_dir . $from );
 120                         if ( ! $md5 ) {
 121                                 warn "ERROR: no md5sum $from_dir $from " unless $md5;
 122                                 next;
 123                         }
 124
 125                         $self->md5sum($data)->out( $from_dir . $from );
 126                         $self->md5sum($data)->put( $from_dir . $to => $md5 );
 127
 128                         warn "$md5 moved to $from_dir $to";
 129                 }
 130
 131                 return 0; # skip dedup
 132         }
 133
 134 =cut
 135
 136         if ( $data->{file} =~ m{^(.*/)?.sync/} ) {
 137                 # ignore .sync/ files from client
 138                 return 0;
 139         }
 140
 141         #return $file->{size} > 4096 ? 1 : 0; # FIXME
 142         return 1; # dedup
 143 }
 144
 145 # never called by rsync directly!
 146 sub new_file {
 147         my ( $self,$data ) = @_;
 148 #       $self->file_set($data);
 149 }
 150
 151 # client doesn't issue --delete
 152 sub removed_file {
 153         my ( $self, $data ) = @_;
 154
 155         my $md5 = $self->md5sum($data)->get( $data->{file} );
 156         return unless $md5; # directories don't have md5sums
 157         my $path = $self->{md5pool} . '/' . $md5;
 158         my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
 159                 $atime,$mtime,$ctime,$blksize,$blocks)
 160                         = stat($path);
 161
 162         my $user = $self->{api}->user_info($data->{login});
 163
 164         if ( $nlink == 1 && $uid == $user->{uid} ) {
 165                 $self->append( $user, 'removed', -$size, $uid, $data->{file} );
 166                 my $id = getpwnam 'md5';
 167                 chown $id,$gid, $path;
 168                 warn "# chown $id $gid $path";
 169         }
 170
 171         $self->md5sum($data)->out( $data->{file} );
 172 }
 173
 174 sub make_dir {
 175         my ( $self, $data ) = @_;
 176
 177 }
 178
 179 sub new_link {
 180         my ( $self, $data ) = @_;
 181
 182         warn "# new_link ",dump $data;
 183
 184 =for removed
 185
 186         if ( $data->{file} =~ m{^(.*/?)\.send/([^/]+)/(.+)$} ) {
 187                 my ( $dir, $to, $name ) = ( $1, $2, $3 );
 188                 my $path = $self->blob_path($data);
 189                 my $link_to = readlink $path;
 190                 warn "$link_to";
 191                 if ( $link_to =~ s{^\Q/rsyncd-munged/\E}{/} ) {
 192
 193                         my $s = $path;
 194                         $s =~ s{/[^/]+$}{}; # strip filename
 195                         while ( $link_to =~ s{/../}{/} ) {
 196                                 $s =~ s{/[^/]+$}{} || die "can't strip $s";
 197                                 warn "## simplify $s $link_to\n";
 198                         }
 199                         $s .= $link_to;
 200
 201                         my $d = $self->blob_path({
 202                                 pid => $data->{pid},
 203                                 file => $name
 204                         });
 205
 206                         # $name can contain directories so we must create them
 207                         mkbasedir $d;
 208
 209                         if ( ! -e $s ) {
 210                                 warn "ERROR: can't find source $s";
 211                         } else {
 212
 213                                 warn "link $s -> $d\n";
 214                                 link $s, $d;
 215
 216                                 my ($l,$f) = ($1,$2) if $s =~ m{users/([^/]+)/blob/(.+)};
 217
 218 #                               my $origin = $self->file_get({
 219 #                                       login => $l,
 220 #                                       file  => $f,
 221 #                               });
 222 #                               $self->new_file($origin);
 223                                 warn "INFO: sent file ",dump($l,$f);
 224                                 my $md5 = $self->md5sum($data)->get($s);
 225                                 $self->md5sum({ login => $to })->put($d => $md5 );
 226                                 # FIXME broken!
 227                         }
 228
 229
 230                 } else {
 231                         warn "ERROR: can't SEND To:$to Name:$name Link:$link_to";
 232                 }
 233         }
 234
 235 =cut
 236
 237 }
 238
 239 sub init_pid_login {
 240         my ( $self, $pid, $login ) = @_;
 241
 242         $login =~ s/\@.+//;
 243         $self->{pid}->{$pid} = $self->{api}->user_info($login);
 244
 245         warn "created $pid";
 246 }
 247
 248 sub cleanup_pid {
 249         my ( $self, $pid ) = @_;
 250
 251         $self->md5sum_close;
 252
 253         delete $self->{pid}->{$pid};
 254         warn "removed $pid";
 255 }
 256
 257 sub rsync_log {
 258         my ( $self, $data ) = @_;
 259         if ( $data =~ m/\[(\d+)\] rsync \w+ (\S+) \w+ (\S+)/ ) {
 260                 my ( $pid, $module, $login ) = ( $1, $2, $3 );
 261                 $self->init_pid_login( $pid, $login );
 262         } elsif ( $data =~ m/\[(\d+)\] sent \S+ bytes\s+received \S+ bytes/ ) {
 263                 my $pid = $1;
 264                 $self->cleanup_pid( $pid );
 265         } else {
 266                 warn "## rsync_log $data";
 267         }
 268 }
 269
 270 sub blob_path {
 271         my ( $self, $data, $path ) = @_;
 272         my $blob = $self->{pid}->{ $data->{pid} }->{dir} || die "no dir for $data->{pid} in ",dump( $self->{pid} );
 273         $blob .= '/' . ( defined $path ? $path : $data->{file} );
 274         return $blob;
 275 }
 276
 277
 278 sub rsync_transfer {
 279         my ( $self,$data ) = @_;
 280
 281         my $path = $self->blob_path($data);
 282
 283         if ( $data->{itemize} =~ m/^[c>]([fdL])/ ) { # received change/create
 284                 my $type = $1;
 285
 286                 if ( $type eq 'f' ) {
 287                         $self->modify_file( $data ) && # selective dedup
 288                         $self->dedup( $data, $path );
 289                 } elsif ( $type eq 'd' ) {
 290                         $self->make_dir( $data );
 291                 } elsif ( $type eq 'L' ) {
 292                         $self->new_link( $data );
 293                 } else {
 294                         die "unknown type $type ", dump $data;
 295                 }
 296         } elsif ( $data->{itemize} =~ m/\*deleting/ ) {
 297                 $self->removed_file($data);
 298         } else {
 299                 warn "IGNORED ",dump($data) if $ENV{DEBUG};
 300         }
 301         return $data;
 302 }
 303
 304 sub append {
 305         my $self = shift @_;
 306         $self->{api}->append( @_ );
 307 }
 308
 309 sub md5pool {
 310         my ( $self, $data ) = @_;
 311
 312         my $pool = $self->{md5pool} || die "no md5pool in ",dump $self;
 313         mkdir $pool unless -e $pool;
 314
 315         my $md5 = $data->{md5} || die "no md5 in ",dump $data;
 316         my $path = $self->blob_path($data);
 317
 318         my $pool_md5 = "$pool/$md5";
 319
 320         if ( -e $pool_md5 ) {
 321                 warn "dedup hit $md5 $path\n";
 322
 323                 my ($pool_uid,$pool_size) = (stat($pool_md5))[4,7];
 324                 my $user = $self->{api}->user_info( $data->{login} );
 325
 326                 if ( $pool_uid != $self->{api}->{md5}->{uid} ) {
 327                         chown $self->{api}->{md5}->{uid}, $self->{api}->{md5}->{gid}, $pool_md5;
 328                         chmod oct("0444"), $pool_md5;
 329                         my $steal_user = $self->{api}->user_info( $pool_uid );
 330                         $self->append( $steal_user, 'dedup-steal', $pool_size, $pool_uid, $data->{file} );
 331                 }
 332                 $self->append( $user, 'dedup', $pool_size, $pool_uid, $data->{file} );
 333
 334                 my $dedup = $path . '.dedup';
 335                 rename $path, $dedup;
 336                 link "$pool/$md5", $path;
 337                 unlink $dedup;
 338         } else {
 339                 link $path, "$pool/$md5";
 340                 warn "dedup +++ $md5 $path";
 341         }
 342
 343         $self->md5sum($data)->put( $data->{file} => $md5 );
 344 }
 345
 346 my $empty_md5 = " " x 32;
 347
 348 sub dedup {
 349         my ( $self, $data, $path ) = @_;
 350
 351         if ( $data->{file} =~ /^(.+\/)?md5sum$/ ) {
 352                 my $dir = $1;
 353                 my $imported = 0;
 354                 warn "IMPORT ", $data->{file}, "\n";
 355                 open(my $md5sum, '<', $path);
 356                 while(<$md5sum>) {
 357                         chomp;
 358                         my ( $md5, $file ) = split(/\s+/,$_,2);
 359                         if ( ! -e "$self->{md5path}/$md5" ) {
 360                                 warn "MISSING $md5 $file\n";
 361                                 next;
 362                         }
 363                         my $new = {
 364                                 pid => $data->{pid},
 365                                 file => "$dir$file",
 366                                 md5 => $md5,
 367                         };
 368                         my $new_path = $self->blob_path($new);
 369                         if ( ! -e $new_path ) {
 370                                 $self->{api}->send_file( 'md5' => $md5, $data->{login}, "$dir$file" );
 371                                 $self->md5pool( $new );
 372                         } else {
 373                                 $self->md5pool( $new );
 374                         }
 375                 }
 376                 print "INFO imported $imported files from ",dump($data);
 377         }
 378
 379         if ( $data->{md5} ne $empty_md5 ) {
 380                 $self->md5sum($data)->put( $data->{file} => $data->{md5} );
 381                 $self->md5pool( $data );
 382         } else {
 383                 warn "empty md5", dump $data;
 384         }
 385 }
 386
 387 1;