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 TokyoCabinet;
  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 mkbasedir {
  39         my $dir = shift;
  40         $dir =~ s{/[^/]+$}{}; # strip filename
  41         mkdir $dir unless -e $dir;
  42 }
  43
  44 sub modify_file {
  45         my ( $self,$data ) = @_;
  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 = $from_dir . $1;
  91                                 if ( -e $path ) {
  92                                         unlink $path && warn "unlink $path\n";
  93                                 } else {
  94                                         warn "MISSING $path to unlink\n";
  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         #return $file->{size} > 4096 ? 1 : 0; # FIXME
 135         return 1; # dedup
 136 }
 137
 138 # never called by rsync directly!
 139 sub new_file {
 140         my ( $self,$data ) = @_;
 141 #       $self->file_set($data);
 142 }
 143
 144 sub remove_file {
 145         my ( $self, $data ) = @_;
 146
 147         my $md5 = $self->md5sum($data)->get( $data->{file} );
 148         return unless $md5; # directories don't have md5sums
 149         my $path = $self->{md5pool} . '/' . $md5;
 150         my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
 151                 $atime,$mtime,$ctime,$blksize,$blocks)
 152                         = stat($path);
 153         if ( $nlink == 1 ) {
 154                 my $id = getpwnam 'md5';
 155                 chown $id,$gid, $path;
 156                 warn "# chown $id $gid $path";
 157         }
 158
 159         $self->md5sum($data)->out( $data->{file} );
 160 }
 161
 162 sub make_dir {
 163         my ( $self, $data ) = @_;
 164
 165 }
 166
 167 sub new_link {
 168         my ( $self, $data ) = @_;
 169
 170         warn "# new_link ",dump $data;
 171
 172         if ( $data->{file} =~ m{^(.*/?)\.send/([^/]+)/(.+)$} ) {
 173                 my ( $dir, $to, $name ) = ( $1, $2, $3 );
 174                 my $path = $self->blob_path($data);
 175                 my $link_to = readlink $path;
 176                 warn "$link_to";
 177                 if ( $link_to =~ s{^\Q/rsyncd-munged/\E}{/} ) {
 178
 179                         my $s = $path;
 180                         $s =~ s{/[^/]+$}{}; # strip filename
 181                         while ( $link_to =~ s{/../}{/} ) {
 182                                 $s =~ s{/[^/]+$}{} || die "can't strip $s";
 183                                 warn "## simplify $s $link_to\n";
 184                         }
 185                         $s .= $link_to;
 186
 187                         my $d = $self->blob_path({
 188                                 pid => $data->{pid},
 189                                 file => $name
 190                         });
 191
 192                         # $name can contain directories so we must create them
 193                         my $to_dir = $d;
 194                         $to_dir =~ s{/[^/]+$}{};
 195                         make_path $to_dir if ! -e $to_dir;
 196
 197                         if ( ! -e $s ) {
 198                                 warn "ERROR: can't find source $s";
 199                         } else {
 200
 201                                 warn "link $s -> $d\n";
 202                                 link $s, $d;
 203
 204                                 my ($l,$f) = ($1,$2) if $s =~ m{users/([^/]+)/blob/(.+)};
 205
 206 #                               my $origin = $self->file_get({
 207 #                                       login => $l,
 208 #                                       file  => $f,
 209 #                               });
 210 #                               $self->new_file($origin);
 211                                 warn "INFO: sent file ",dump($l,$f);
 212                                 my $md5 = $self->md5sum($data)->get($s);
 213                                 $self->md5sum({ login => $to })->put($d => $md5 );
 214                                 # FIXME broken!
 215                         }
 216
 217
 218                 } else {
 219                         warn "ERROR: can't SEND To:$to Name:$name Link:$link_to";
 220                 }
 221         }
 222 }
 223
 224 sub md5sum {
 225         my ( $self, $data ) = @_;
 226
 227         my $login = $data->{login} || confess "missing login in ",dump $data;
 228
 229         return $self->{md5sum}->{$login} if exists $self->{md5sum}->{$login};
 230
 231         my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
 232                 getpwnam $login;
 233
 234         my $md5_path = "$dir/.md5";
 235
 236         my $db = TokyoCabinet::HDB->new();
 237         $db->open($md5_path, $db->OWRITER | $db->OCREAT)
 238         or die "can't open $md5_path: ",$db->errmsg( $db->ecode );
 239
 240         warn "open $md5_path";
 241
 242         $self->{md5sum}->{$login} = $db;
 243         return $db;
 244 }
 245
 246 sub rsync_log {
 247         my ( $self, $data ) = @_;
 248         if ( $data =~ m/\[(\d+)\] rsync \w+ (\S+) \w+ (\S+)/ ) {
 249                 my ( $pid, $module, $login ) = ( $1, $2, $3 );
 250
 251                 $login =~ s/\@.+//;
 252                 my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
 253                         getpwnam $login;
 254
 255                 $self->{pid}->{$pid} = {
 256                         login => $login,
 257                         uid => $uid,
 258                         gid => $gid,
 259                         email => $email,
 260                         dir => $dir,
 261                         shell => $shell,
 262                 };
 263
 264                 warn "created $pid";
 265
 266         } elsif ( $data =~ m/\[(\d+)\] sent \S+ bytes\s+received \S+ bytes/ ) {
 267                 my $pid = $1;
 268
 269                 foreach my $login ( keys %{ $self->{md5sum} } ) {
 270                         $self->{md5sum}->{$login}->close;
 271                         warn "close md5sum $login";
 272                 }
 273                 delete $self->{md5sum};
 274
 275                 delete $self->{pid}->{$pid};
 276                 warn "removed $pid";
 277 warn dump $self;
 278
 279         } else {
 280 #               warn "## rsync_log $data";
 281         }
 282 }
 283
 284 sub blob_path {
 285         my ( $self, $data ) = @_;
 286         my $blob = $self->{pid}->{ $data->{pid} }->{dir} || die "no dir for $data->{pid} in ",dump( $self->{pid} );
 287         $blob .= '/' . $data->{file};
 288         return $blob;
 289 }
 290
 291
 292 sub rsync_transfer {
 293         my ( $self,$data ) = @_;
 294
 295         my $path = $self->blob_path($data);
 296
 297         if ( $data->{itemize} =~ m/^[c>]([fdL])/ ) { # received change/create
 298                 my $type = $1;
 299
 300                 if ( $type eq 'f' ) {
 301                         $self->modify_file( $data ) && # selective dedup
 302                         $self->dedup( $data, $path );
 303                 } elsif ( $type eq 'd' ) {
 304                         $self->make_dir( $data );
 305                 } elsif ( $type eq 'L' ) {
 306                         $self->new_link( $data );
 307                 } else {
 308                         die "unknown type $type ", dump $data;
 309                 }
 310         } elsif ( $data->{itemize} =~ m/\*deleting/ ) {
 311                 $self->remove_file($data);
 312         } else {
 313                 warn "IGNORED ",dump($data) if $ENV{DEBUG};
 314         }
 315         return $data;
 316 }
 317
 318 sub md5pool {
 319         my ( $self, $data ) = @_;
 320
 321         my $pool = $self->{md5pool} || die "no md5pool in ",dump $self;
 322         mkdir $pool unless -e $pool;
 323
 324         my $md5 = $data->{md5} || die "no md5 in ",dump $data;
 325         my $path = $self->blob_path($data);
 326
 327         if ( -e "$pool/$md5" ) {
 328                 warn "dedup hit $md5 $path\n";
 329                 my $dedup = $path . '.dedup';
 330                 rename $path, $dedup;
 331                 link "$pool/$md5", $path;
 332                 unlink $dedup;
 333                 # FIXME fix perms?
 334         } else {
 335                 link $path, "$pool/$md5";
 336                 warn "dedup +++ $md5 $path";
 337         }
 338
 339         $self->md5sum($data)->put( $data->{file} => $md5 );
 340 }
 341
 342 my $empty_md5 = " " x 32;
 343
 344 sub dedup {
 345         my ( $self, $data, $path ) = @_;
 346
 347         if ( $data->{file} =~ /^(.+\/)?md5sum$/ ) {
 348                 my $dir = $1;
 349                 my $imported = 0;
 350                 warn "IMPORT ", $data->{file}, "\n";
 351                 open(my $md5sum, '<', $path);
 352                 while(<$md5sum>) {
 353                         chomp;
 354                         my ( $md5, $file ) = split(/\s+/,$_,2);
 355                         if ( ! -e "$self->{md5path}/$md5" ) {
 356                                 warn "MISSING $md5 $file\n";
 357                                 next;
 358                         }
 359                         my $new = {
 360                                 pid => $data->{pid},
 361                                 file => "$dir$file",
 362                                 md5 => $md5,
 363                         };
 364                         my $new_path = $self->blob_path($new);
 365                         if ( ! -e $new_path ) {
 366                                 # create path from md5sum file
 367                                 my $only_dir = $1 if $new =~ m{^(.+)/[^/]+$};
 368                                 make_path $only_dir unless -d $only_dir;
 369                                 $imported += link "$self->{md5path}/$md5", $new_path;
 370                                 $self->new_file($new);
 371                                 warn "import from $path ",dump($new);
 372                                 $self->md5pool( $new );
 373                         } else {
 374                                 $self->md5pool( $new );
 375                         }
 376                 }
 377                 print "INFO imported $imported files from ",dump($data);
 378         }
 379
 380         if ( $data->{md5} ne $empty_md5 ) {
 381                 $self->md5pool( $data );
 382         } else {
 383                 warn "empty md5", dump $data;
 384         }
 385 }
 386
 387 1;