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 warn $_;
  89                         if ( ! /^(MOVED|RENAMED)\#/ ) {
  90                                 warn "skip $_\n";
  91                                 next;
  92                         }
  93
  94                         my ( undef, $from, $to ) = split(/\#/,$_,3);
  95
  96                         my ( $from_path, $to_path ) = map {
  97                                 my $tmp = $data;
  98                                 $tmp->{file} = $from_dir . $_;
  99                                 $self->blob_path($tmp);
 100                         } ( $from, $to );
 101
 102                         if ( ! -e $from_path ) {
 103                                 warn "SKIPPED $from_path: $!";
 104                                 next;
 105                         }
 106
 107                         warn "MV $from_path -> $to_path";
 108                         mkbasedir $to_path;
 109                         rename $from_path, $to_path;
 110
 111                         my $md5 = $self->md5sum($data)->get( $from_dir . $from );
 112                         die "no md5sum $from_dir $from " unless $md5;
 113
 114                         $self->md5sum($data)->out( $from_dir . $from );
 115                         $self->md5sum($data)->put( $from_dir . $to => $md5 );
 116
 117                         warn "$md5 moved to $from_dir $to";
 118                 }
 119
 120                 return 0; # skip dedup
 121         }
 122
 123         #return $file->{size} > 4096 ? 1 : 0; # FIXME
 124         return 1; # dedup
 125 }
 126
 127 # never called by rsync directly!
 128 sub new_file {
 129         my ( $self,$data ) = @_;
 130 #       $self->file_set($data);
 131 }
 132
 133 sub remove_file {
 134         my ( $self, $data ) = @_;
 135
 136         my $md5 = $self->md5sum($data)->get( $data->{file} );
 137         return unless $md5; # directories don't have md5sums
 138         my $path = $self->{md5pool} . '/' . $md5;
 139         my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
 140                 $atime,$mtime,$ctime,$blksize,$blocks)
 141                         = stat($path);
 142         if ( $nlink == 1 ) {
 143                 my $id = getpwnam 'md5';
 144                 chown $id,$gid, $path;
 145                 warn "# chown $id $gid $path";
 146         }
 147
 148         $self->md5sum($data)->out( $data->{file} );
 149 }
 150
 151 sub make_dir {
 152         my ( $self, $data ) = @_;
 153
 154 }
 155
 156 sub new_link {
 157         my ( $self, $data ) = @_;
 158
 159         warn "# new_link ",dump $data;
 160
 161         if ( $data->{file} =~ m{^(.*/?)\.send/([^/]+)/(.+)$} ) {
 162                 my ( $dir, $to, $name ) = ( $1, $2, $3 );
 163                 my $path = $self->blob_path($data);
 164                 my $link_to = readlink $path;
 165                 warn "$link_to";
 166                 if ( $link_to =~ s{^\Q/rsyncd-munged/\E}{/} ) {
 167
 168                         my $s = $path;
 169                         $s =~ s{/[^/]+$}{}; # strip filename
 170                         while ( $link_to =~ s{/../}{/} ) {
 171                                 $s =~ s{/[^/]+$}{} || die "can't strip $s";
 172                                 warn "## simplify $s $link_to\n";
 173                         }
 174                         $s .= $link_to;
 175
 176                         my $d = $self->blob_path({
 177                                 pid => $data->{pid},
 178                                 file => $name
 179                         });
 180
 181                         # $name can contain directories so we must create them
 182                         my $to_dir = $d;
 183                         $to_dir =~ s{/[^/]+$}{};
 184                         make_path $to_dir if ! -e $to_dir;
 185
 186                         if ( ! -e $s ) {
 187                                 warn "ERROR: can't find source $s";
 188                         } else {
 189
 190                                 warn "link $s -> $d\n";
 191                                 link $s, $d;
 192
 193                                 my ($l,$f) = ($1,$2) if $s =~ m{users/([^/]+)/blob/(.+)};
 194
 195 #                               my $origin = $self->file_get({
 196 #                                       login => $l,
 197 #                                       file  => $f,
 198 #                               });
 199 #                               $self->new_file($origin);
 200                                 warn "INFO: sent file ",dump($l,$f);
 201                                 my $md5 = $self->md5sum($data)->get($s);
 202                                 $self->md5sum({ login => $to })->put($d => $md5 );
 203                                 # FIXME broken!
 204                         }
 205
 206
 207                 } else {
 208                         warn "ERROR: can't SEND To:$to Name:$name Link:$link_to";
 209                 }
 210         }
 211 }
 212
 213 sub md5sum {
 214         my ( $self, $data ) = @_;
 215
 216         my $login = $data->{login} || confess "missing login in ",dump $data;
 217
 218         return $self->{md5sum}->{$login} if exists $self->{md5sum}->{$login};
 219
 220         my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
 221                 getpwnam $login;
 222
 223         my $md5_path = "$dir/.md5";
 224
 225         my $db = TokyoCabinet::HDB->new();
 226         $db->open($md5_path, $db->OWRITER | $db->OCREAT)
 227         or die "can't open $md5_path: ",$db->errmsg( $db->ecode );
 228
 229         warn "open $md5_path";
 230
 231         $self->{md5sum}->{$login} = $db;
 232         return $db;
 233 }
 234
 235 sub rsync_log {
 236         my ( $self, $data ) = @_;
 237         if ( $data =~ m/\[(\d+)\] rsync \w+ (\S+) \w+ (\S+)/ ) {
 238                 my ( $pid, $module, $login ) = ( $1, $2, $3 );
 239
 240                 $login =~ s/\@.+//;
 241                 my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
 242                         getpwnam $login;
 243
 244                 $self->{pid}->{$pid} = {
 245                         login => $login,
 246                         uid => $uid,
 247                         gid => $gid,
 248                         email => $email,
 249                         dir => $dir,
 250                         shell => $shell,
 251                 };
 252
 253                 warn "created $pid";
 254
 255         } elsif ( $data =~ m/\[(\d+)\] sent \S+ bytes\s+received \S+ bytes/ ) {
 256                 my $pid = $1;
 257
 258                 foreach my $login ( keys %{ $self->{md5sum} } ) {
 259                         $self->{md5sum}->{$login}->close;
 260                         warn "close md5sum $login";
 261                 }
 262                 delete $self->{md5sum};
 263
 264                 delete $self->{pid}->{$pid};
 265                 warn "removed $pid";
 266 warn dump $self;
 267
 268         } else {
 269 #               warn "## rsync_log $data";
 270         }
 271 }
 272
 273 sub blob_path {
 274         my ( $self, $data ) = @_;
 275         my $blob = $self->{pid}->{ $data->{pid} }->{dir} || die "no dir for $data->{pid} in ",dump( $self->{pid} );
 276         $blob .= '/' . $data->{file};
 277         return $blob;
 278 }
 279
 280
 281 sub rsync_transfer {
 282         my ( $self,$data ) = @_;
 283
 284         my $path = $self->blob_path($data);
 285
 286         if ( $data->{itemize} =~ m/^[c>]([fdL])/ ) { # received change/create
 287                 my $type = $1;
 288
 289                 if ( $type eq 'f' ) {
 290                         $self->modify_file( $data ) && # selective dedup
 291                         $self->dedup( $data, $path );
 292                 } elsif ( $type eq 'd' ) {
 293                         $self->make_dir( $data );
 294                 } elsif ( $type eq 'L' ) {
 295                         $self->new_link( $data );
 296                 } else {
 297                         die "unknown type $type ", dump $data;
 298                 }
 299         } elsif ( $data->{itemize} =~ m/\*deleting/ ) {
 300                 $self->remove_file($data);
 301         } else {
 302                 warn "IGNORED ",dump($data) if $ENV{DEBUG};
 303         }
 304         return $data;
 305 }
 306
 307 sub md5pool {
 308         my ( $self, $data ) = @_;
 309
 310         my $pool = $self->{md5pool} || die "no md5pool in ",dump $self;
 311         mkdir $pool unless -e $pool;
 312
 313         my $md5 = $data->{md5} || die "no md5 in ",dump $data;
 314         my $path = $self->blob_path($data);
 315
 316         if ( -e "$pool/$md5" ) {
 317                 warn "dedup hit $md5 $path\n";
 318                 my $dedup = $path . '.dedup';
 319                 rename $path, $dedup;
 320                 link "$pool/$md5", $path;
 321                 unlink $dedup;
 322                 # FIXME fix perms?
 323         } else {
 324                 link $path, "$pool/$md5";
 325                 warn "dedup +++ $md5 $path";
 326         }
 327
 328         $self->md5sum($data)->put( $data->{file} => $md5 );
 329 }
 330
 331 my $empty_md5 = " " x 32;
 332
 333 sub dedup {
 334         my ( $self, $data, $path ) = @_;
 335
 336         if ( $data->{file} =~ /^(.+\/)?md5sum$/ ) {
 337                 my $dir = $1;
 338                 my $imported = 0;
 339                 warn "IMPORT ", $data->{file}, "\n";
 340                 open(my $md5sum, '<', $path);
 341                 while(<$md5sum>) {
 342                         chomp;
 343                         my ( $md5, $file ) = split(/\s+/,$_,2);
 344                         if ( ! -e "$self->{md5path}/$md5" ) {
 345                                 warn "MISSING $md5 $file\n";
 346                                 next;
 347                         }
 348                         my $new = {
 349                                 pid => $data->{pid},
 350                                 file => "$dir$file",
 351                                 md5 => $md5,
 352                         };
 353                         my $new_path = $self->blob_path($new);
 354                         if ( ! -e $new_path ) {
 355                                 # create path from md5sum file
 356                                 my $only_dir = $1 if $new =~ m{^(.+)/[^/]+$};
 357                                 make_path $only_dir unless -d $only_dir;
 358                                 $imported += link "$self->{md5path}/$md5", $new_path;
 359                                 $self->new_file($new);
 360                                 warn "import from $path ",dump($new);
 361                                 $self->md5pool( $new );
 362                         } else {
 363                                 $self->md5pool( $new );
 364                         }
 365                 }
 366                 print "INFO imported $imported files from ",dump($data);
 367         }
 368
 369         if ( $data->{md5} ne $empty_md5 ) {
 370                 $self->md5pool( $data );
 371         } else {
 372                 warn "empty md5", dump $data;
 373         }
 374 }
 375
 376 1;