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