/[cvs]/nfo/perl/libs/Data/Transfer/Sync/Core.pm
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revision 1.2 by joko, Sun Jan 19 02:05:42 2003 UTC revision 1.10 by joko, Wed Jun 25 23:03:57 2003 UTC
# Line 1  Line 1 
1    ## -------------------------------------------------------------------------
2    ##
3  ##    $Id$  ##    $Id$
4  ##  ##
5  ##    Copyright (c) 2002  Andreas Motl <andreas.motl@ilo.de>  ##    Copyright (c) 2002  Andreas Motl <andreas.motl@ilo.de>
6  ##  ##
7  ##    See COPYRIGHT section in pod text below for usage and distribution rights.  ##    See COPYRIGHT section in pod text below for usage and distribution rights.
8  ##  ##
9  ##    ----------------------------------------------------------------------------------------  ## -------------------------------------------------------------------------
10  ##    $Log$  ##    $Log$
11    ##    Revision 1.10  2003/06/25 23:03:57  joko
12    ##    no debugging
13    ##
14    ##    Revision 1.9  2003/05/13 08:17:52  joko
15    ##    buildAttributeMap now propagates error
16    ##
17    ##    Revision 1.8  2003/03/27 15:31:15  joko
18    ##    fixes to modules regarding new namespace(s) below Data::Mungle::*
19    ##
20    ##    Revision 1.7  2003/02/21 08:01:11  joko
21    ##    debugging, logging
22    ##    renamed module
23    ##
24    ##    Revision 1.6  2003/02/14 14:03:49  joko
25    ##    + logging, debugging
26    ##    - refactored code to sister module
27    ##
28    ##    Revision 1.5  2003/02/11 05:30:47  joko
29    ##    + minor fixes and some debugging mud
30    ##
31    ##    Revision 1.4  2003/02/09 05:01:10  joko
32    ##    + major structure changes
33    ##    - refactored code to sister modules
34    ##
35    ##    Revision 1.3  2003/01/20 17:01:14  joko
36    ##    + cosmetics and debugging
37    ##    + probably refactored code to new plugin-modules 'Metadata.pm' and/or 'StorageInterface.pm' (guess it was the last one...)
38    ##
39  ##    Revision 1.2  2003/01/19 02:05:42  joko  ##    Revision 1.2  2003/01/19 02:05:42  joko
40  ##    - removed pod-documentation: now in Data/Transfer/Sync.pod  ##    - removed pod-documentation: now in Data/Transfer/Sync.pod
41  ##  ##
# Line 44  Line 74 
74  ##    + minor cosmetics for logging  ##    + minor cosmetics for logging
75  ##  ##
76  ##    Revision 1.2  2002/12/01 04:43:25  joko  ##    Revision 1.2  2002/12/01 04:43:25  joko
77  ##    + mapping deatil entries may now be either an ARRAY or a HASH  ##    + mapping detail entries may now be either an ARRAY or a HASH
78  ##    + erase flag is used now (for export-operations)  ##    + erase flag is used now (for export-operations)
79  ##    + expressions to refer to values inside deep nested structures  ##    + expressions to refer to values inside deep nested structures
80  ##    - removed old mappingV2-code  ##    - removed old mappingV2-code
# Line 56  Line 86 
86  ##  ##
87  ##    Revision 1.1  2002/10/10 03:44:21  cvsjoko  ##    Revision 1.1  2002/10/10 03:44:21  cvsjoko
88  ##    + new  ##    + new
89  ##    ----------------------------------------------------------------------------------------  ## -------------------------------------------------------------------------
90    
91    
92  package Data::Transfer::Sync::Core;  package Data::Transfer::Sync::Core;
# Line 71  use mixin::with qw( Data::Transfer::Sync Line 101  use mixin::with qw( Data::Transfer::Sync
101    
102  use Data::Dumper;  use Data::Dumper;
103    
104  use misc::HashExt;  #use misc::HashExt;
105  use libp qw( md5_base64 );  use Hash::Serializer;
106  use libdb qw( quotesql hash2Sql );  use Data::Mungle::Compare::Struct qw( getDifference isEmpty );
 use Data::Transform::Deep qw( hash2object refexpr2perlref );  
 use Data::Compare::Struct qw( getDifference isEmpty );  
107  use Data::Storage::Container;  use Data::Storage::Container;
108  use DesignPattern::Object;  use DesignPattern::Object;
109    use shortcuts::database qw( quotesql );
110    
111  # get logger instance  # get logger instance
112  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
# Line 108  sub _init { Line 137  sub _init {
137      $self->{container}->addStorage($_, $self->{storages}->{$_});      $self->{container}->addStorage($_, $self->{storages}->{$_});
138    }    }
139        
140      # trace
141        #print Dumper($self);
142        #exit;
143    
144    return 1;    return 1;
145        
146  }  }
147    
148  sub _initV1 {  sub _initV1 {
149    my $self = shift;    my $self = shift;
150      $logger->debug( __PACKAGE__ . "->_initV1" );
151      die("this should not be reached!");
152    # tag storages with id-authority and checksum-provider information    # tag storages with id-authority and checksum-provider information
153    # TODO: better store tag inside metadata to hold bits together!    # TODO: better store tag inside metadata to hold bits together!
154    map { $self->{container}->{storage}->{$_}->{isIdentAuthority} = 1 } @{$self->{id_authorities}};    map { $self->{container}->{storage}->{$_}->{isIdentAuthority} = 1 } @{$self->{id_authorities}};
# Line 122  sub _initV1 { Line 157  sub _initV1 {
157  }  }
158    
159    
 sub _preCheckOptions {  
   
   my $self = shift;  
   my $opts = shift;  
   
 #print Dumper($opts);  
 #exit;  
   
   # the type of the to-be-synced item  
   if (!$opts->{source}->{nodeType}) {  
     $logger->error( __PACKAGE__ . "->_preCheckOptions failed: Please specify \"source-type\".");  
     return;  
   }  
   # the name of the (container-) node the items are listed in  
   if (!$opts->{source}->{nodeName}) {  
     $logger->error( __PACKAGE__ . "->_preCheckOptions failed: Please specify \"source-node\".");  
     return;  
   }  
   
   # a "map"-declaration which module to use for mapping- and/or lookup-purposes  
   if (!$opts->{map}) {  
     $logger->warning( __PACKAGE__ . "->_preCheckOptions: No mapping supplied - please check key 'map|mappings' in global configuration or specify additional argument '--mapping-module'.");  
     return;  
   }  
   if (!$opts->{map}->{moduleName}) {  
     $logger->warning( __PACKAGE__ . "->_preCheckOptions: Currently only perl-modules can provide mappings: Please specify one with '--mapping-module'.");  
     return;  
   }  
   
   return 1;  
   
 }  
   
   
   
   
   
   
   
   
   
 sub _buildFieldmappingV1 {  
   my $self = shift;  
   
   # build mapping  
   # incoming: and Array of node map entries (Array or Hash) - e.g.  
   #   [ 'source:item_name' => 'target:class_val' ]  
   #   { source => 'event->startDateTime', target => 'begindate' }  
   foreach (@{$self->{args}->{mapping}}) {  
     if (ref $_ eq 'ARRAY') {  
       my @entry1 = split(':', $_->[0]);  
       my @entry2 = split(':', $_->[1]);  
       my $descent = [];  
       my $node = [];  
       $descent->[0] = $entry1[0];  
       $descent->[1] = $entry2[0];  
       $node->[0] = $entry1[1];  
       $node->[1] = $entry2[1];  
       push @{$self->{meta}->{$descent->[0]}->{childnodes}}, $node->[0];  
       push @{$self->{meta}->{$descent->[1]}->{childnodes}}, $node->[1];  
     } elsif (ref $_ eq 'HASH') {  
       foreach my $entry_key (keys %$_) {  
         my $entry_val = $_->{$entry_key};  
         push @{$self->{meta}->{$entry_key}->{childnodes}}, $entry_val;  
       }  
     }  
   
   }  
   
 }  
   
 sub _buildMetadataV1 {  
   my $self = shift;  
   
   # decompose identifiers for each partner  
   # TODO: refactor!!! take this list from already established/given metadata  
   foreach ('source', 'target') {  
       
     # get/set metadata for further processing  
   
     # Partner and Node (e.g.: "L:Country" or "R:countries.csv")  
     if (my $item = $self->{args}->{$_}) {  
       my @item = split(':', $item);  
       $self->{meta}->{$_}->{dbkey} = $item[0];  
       $self->{meta}->{$_}->{node} = $item[1];  
     }  
       
     # Filter  
     if (my $item_filter = $self->{args}->{$_ . '_filter'}) {  
       $self->{meta}->{$_}->{filter} = $item_filter;  
     }  
   
     # IdentProvider  
     if (my $item_ident = $self->{args}->{$_ . '_ident'}) {  
       my @item_ident = split(':', $item_ident);  
       $self->{meta}->{$_}->{IdentProvider} = { method => $item_ident[0], arg => $item_ident[1] };  
     }  
   
 #print Dumper($self->{meta});  
   
     # TODO: ChecksumProvider  
   
     # exclude properties/subnodes  
     if (my $item_exclude = $self->{args}->{$_ . '_exclude'}) {  
       $self->{meta}->{$_}->{subnodes_exclude} = $item_exclude;  
     }  
       
     # TypeProvider  
     if (my $item_type = $self->{args}->{$_ . '_type'}) {  
       my @item_type = split(':', $item_type);  
       $self->{meta}->{$_}->{TypeProvider} = { method => $item_type[0], arg => $item_type[1] };  
     }  
       
     # Callbacks - writers (will be triggered _before_ writing to target)  
     if (my $item_writers = $self->{args}->{$_ . '_callbacks_write'}) {  
       my $descent = $_;     # this is important since the following code inside the map wants to use its own context variables  
       map { $self->{meta}->{$descent}->{Callback}->{write}->{$_}++; } @$item_writers;  
     }  
       
     # Callbacks - readers (will be triggered _after_ reading from source)  
     if (my $item_readers = $self->{args}->{$_ . '_callbacks_read'}) {  
       my $descent = $_;  
       map { $self->{meta}->{$descent}->{Callback}->{read}->{$_}++; } @$item_readers;  
     }  
       
     # resolve storage objects  
     #$self->{$_} = $self->{container}->{storage}->{$self->{meta}->{$_}->{dbkey}};  
     # relink references to metainfo  
     $self->{meta}->{$_}->{storage} = $self->{container}->{storage}->{$self->{meta}->{$_}->{dbkey}};  
     #print "iiiiisprov: ", Dumper($self->{meta}->{$_}->{storage}), "\n";  
   }  
   
 }  
   
160  # TODO: abstract the hardwired use of "source" and "target" in here somehow - hmmmm.......  /(="§/%???  # TODO: abstract the hardwired use of "source" and "target" in here somehow - hmmmm.......  /(="§/%???
161  sub _syncNodes {  sub _run {
162    
163    my $self = shift;    my $self = shift;
164        
165    my $tc = OneLineDumpHash->new( {} );    #print "verbose: ", $self->{verbose}, "\n";
166      $self->{verbose} = 1;
167      
168      $logger->debug( __PACKAGE__ . "->_run" );
169    
170      # for statistics
171      my $tc = Hash::Serializer->new( {} );
172    my $results;    my $results;
173        
174    # set of objects is already in $self->{args}    # set of objects is already in $self->{args}
# Line 276  sub _syncNodes { Line 183  sub _syncNodes {
183    }    }
184        
185    # get reference to node list from convenient method provided by CORE-HANDLE    # get reference to node list from convenient method provided by CORE-HANDLE
   #$results ||= $self->{source}->getListUnfiltered($self->{meta}->{source}->{node});  
   #$results ||= $self->{meta}->{source}->{storage}->getListUnfiltered($self->{meta}->{source}->{node});  
186    $results ||= $self->_getNodeList('source');    $results ||= $self->_getNodeList('source');
187    
188      #print Dumper($results);
189    
190    # checkpoint: do we actually have a list to iterate through?    # checkpoint: do we actually have a list to iterate through?
191    if (!$results || !@{$results}) {    if (!$results || !@{$results}) {
192      $logger->notice( __PACKAGE__ . "->syncNodes: No nodes to synchronize." );      $logger->notice( __PACKAGE__ . "->_run: No nodes to synchronize." );
193      return;      return;
194    }    }
195    
196    
197    
198      # check if we actually *have* a synchronization method
199      if (!$self->{options}->{metadata}->{syncMethod}) {
200        $logger->critical( __PACKAGE__ . "->_run: No synchronization method (checksum|timestamp) specified" );
201        return;
202      }
203        
204        
205    # dereference    # dereference
206    my @results = @{$results};    my @results = @{$results};
# Line 292  sub _syncNodes { Line 208  sub _syncNodes {
208    # iterate through set    # iterate through set
209    foreach my $source_node_real (@results) {    foreach my $source_node_real (@results) {
210    
211        print ":" if $self->{verbose};
212    
213      $tc->{total}++;      $tc->{total}++;
214    
215  #print "========================  iter", "\n";  #print "========================  iter", "\n";
# Line 301  sub _syncNodes { Line 219  sub _syncNodes {
219      #   - is a "deep_copy" needed here if occouring modifications take place?      #   - is a "deep_copy" needed here if occouring modifications take place?
220      #   - puuhhhh, i guess a deep_copy would destroy tangram mechanisms?      #   - puuhhhh, i guess a deep_copy would destroy tangram mechanisms?
221      #   - after all, just take care for now that this object doesn't get updated!      #   - after all, just take care for now that this object doesn't get updated!
222        #   - so, just use its reference for now - if some cloning is needed in future, do this here!
223      my $source_node = $source_node_real;      my $source_node = $source_node_real;
224    
225      # modify entry - handle new style callbacks (the readers)      # modify entry - handle new style callbacks (the readers)
226  #print Dumper($source_node);  
227  #exit;      # trace
228          #print Dumper($source_node);
229          #exit;
230    
231      my $descent = 'source';      my $descent = 'source';
232    
# Line 313  sub _syncNodes { Line 234  sub _syncNodes {
234      my $map_callbacks = {};      my $map_callbacks = {};
235      if (my $callbacks = $self->{meta}->{$descent}->{Callback}) {      if (my $callbacks = $self->{meta}->{$descent}->{Callback}) {
236    
237          # trace
238            #print Dumper($callbacks);
239            #exit;
240    
241        my $error = 0;        my $error = 0;
242    
243        foreach my $node (keys %{$callbacks->{read}}) {        foreach my $node (keys %{$callbacks->{read}}) {
# Line 320  sub _syncNodes { Line 245  sub _syncNodes {
245          my $object = $source_node;          my $object = $source_node;
246          my $value; # = $source_node->{$node};          my $value; # = $source_node->{$node};
247    
248          # trace
249            #print Dumper($self->{options});
250    
251          # ------------  half-redundant: make $self->callCallback($object, $value, $opts)          # ------------  half-redundant: make $self->callCallback($object, $value, $opts)
252          my $perl_callback = $self->{meta}->{$descent}->{node} . '::' . $node . '_read';          #my $perl_callback = $self->{meta}->{$descent}->{node} . '::' . $node . '_read';
253            my $perl_callback = $self->{meta}->{$descent}->{nodeType} . '::' . $node . '_read';
254          my $evalstring = 'return ' . $perl_callback . '( { object => $object, property => $node, value => $value, storage => $self->{meta}->{$descent}->{storage} } );';          my $evalstring = 'return ' . $perl_callback . '( { object => $object, property => $node, value => $value, storage => $self->{meta}->{$descent}->{storage} } );';
255          #print $evalstring, "\n"; exit;          #print $evalstring, "\n"; exit;
256          my $cb_result = eval($evalstring);          my $cb_result = eval($evalstring);
257          if ($@) {          if ($@) {
           die $@;  
258            $error = 1;            $error = 1;
259            print $@, "\n";            $logger->error( __PACKAGE__ . "->_run: $@" );
260              next;
261          }          }
262          # ------------  half-redundant: make $self->callCallback($object, $value, $opts)          # ------------  half-redundant: make $self->callCallback($object, $value, $opts)
263                    
# Line 338  sub _syncNodes { Line 267  sub _syncNodes {
267    
268      }      }
269    
270  #print Dumper($source_node);      # trace
271          #print Dumper($source_node);
272    
273      # exclude defined fields  (simply delete from object)      # exclude defined fields  (simply delete from object)
274      map { delete $source_node->{$_} } @{$self->{meta}->{source}->{subnodes_exclude}};      map { delete $source_node->{$_} } @{$self->{meta}->{source}->{subnodes_exclude}};
# Line 347  sub _syncNodes { Line 277  sub _syncNodes {
277      $self->{node} = {};      $self->{node} = {};
278      $self->{node}->{source}->{payload} = $source_node;      $self->{node}->{source}->{payload} = $source_node;
279    
280  #print "res - ident", "\n";      # trace
281          #print Dumper($self->{node});
282          #exit;
283    
284      # determine ident of entry      # determine ident of entry
285      my $identOK = $self->_resolveNodeIdent('source');      my $identOK = $self->_resolveNodeIdent('source');
286      #if (!$identOK && lc $self->{args}->{direction} ne 'import') {      #if (!$identOK && lc $self->{args}->{direction} ne 'import') {
287      if (!$identOK) {      if (!$identOK) {
288        #print Dumper($self->{meta}->{source});        #print Dumper($self->{meta}->{source});
289        $logger->critical( __PACKAGE__ . "->syncNodes: No ident found in source node \"$self->{meta}->{source}->{node}\", try to \"prepare\" this node first?" );        $logger->critical( __PACKAGE__ . "->_run: No ident found in source node ( nodeName='$self->{meta}->{source}->{nodeName}', nodeType='$self->{meta}->{source}->{nodeType}') try to \"prepare\" this node first?" );
290        return;        return;
291      }      }
292    
293  #print "statload", "\n";      #print "l" if $self->{verbose};
 #print "ident: ", $self->{node}->{source}->{ident}, "\n";  
 #print Dumper($self->{node});  
       
294      my $statOK = $self->_statloadNode('target', $self->{node}->{source}->{ident});      my $statOK = $self->_statloadNode('target', $self->{node}->{source}->{ident});
295    
 #print Dumper($self->{node});  
       
296      # mark node as new either if there's no ident or if stat/load failed      # mark node as new either if there's no ident or if stat/load failed
297      if (!$statOK) {      if (!$statOK) {
298        $self->{node}->{status}->{new} = 1;        $self->{node}->{status}->{new} = 1;
# Line 374  sub _syncNodes { Line 301  sub _syncNodes {
301    
302  #print "checksum", "\n";  #print "checksum", "\n";
303            
304        #print Dumper($self);
305        
306      # determine status of entry by synchronization method      # determine status of entry by synchronization method
307      if ( (lc $self->{args}->{method} eq 'checksum') ) {      if ( lc $self->{options}->{metadata}->{syncMethod} eq 'checksum' ) {
308      #if ( $statOK && (lc $self->{args}->{method} eq 'checksum') ) {      #if ( $statOK && (lc $self->{args}->{method} eq 'checksum') ) {
309      #if ( !$self->{node}->{status}->{new} && (lc $self->{args}->{method} eq 'checksum') ) {      #if ( !$self->{node}->{status}->{new} && (lc $self->{args}->{method} eq 'checksum') ) {
310                
311        # TODO:      # calculate checksum of source node
       # is this really worth a "critical"???  
       # no - it should just be a debug appendix i believe  
   
 #print "readcs", "\n";  
         
       # calculate checksum of source node  
312        #$self->_calcChecksum('source');        #$self->_calcChecksum('source');
313        if (!$self->_readChecksum('source')) {        if (!$self->_readChecksum('source')) {
314          $logger->critical( __PACKAGE__ . "->_readChecksum: Could not find \"source\" entry with ident=\"$self->{node}->{source}->{ident}\"" );          $logger->warning( __PACKAGE__ . "->_run: Could not find \"source\" entry with ident=\"$self->{node}->{source}->{ident}\"" );
315          $tc->{skip}++;          $tc->{skip}++;
316          print "s" if $self->{verbose};          print "s" if $self->{verbose};
317          next;          next;
# Line 410  sub _syncNodes { Line 333  sub _syncNodes {
333        # determine if entry is "new" or "dirty"        # determine if entry is "new" or "dirty"
334        # after all, this seems to be the point where the hammer falls.....        # after all, this seems to be the point where the hammer falls.....
335        print "c" if $self->{verbose};        print "c" if $self->{verbose};
336    
337          # trace
338            #print Dumper($self->{node});
339            #exit;
340    
341        $self->{node}->{status}->{new} = !$self->{node}->{target}->{checksum};        $self->{node}->{status}->{new} = !$self->{node}->{target}->{checksum};
342        if (!$self->{node}->{status}->{new}) {        if (!$self->{node}->{status}->{new}) {
343          $self->{node}->{status}->{dirty} =          $self->{node}->{status}->{dirty} =
# Line 419  sub _syncNodes { Line 347  sub _syncNodes {
347            $self->{args}->{force};            $self->{args}->{force};
348        }        }
349    
350        } else {
351          $logger->warning( __PACKAGE__ . "->_run: Synchronization method '$self->{options}->{metadata}->{syncMethod}' is not implemented" );
352          $tc->{skip}++;
353          print "s" if $self->{verbose};
354          next;
355      }      }
356    
357      # first reaction on entry-status: continue with next entry if the current is already "in sync"      # first reaction on entry-status: continue with next entry if the current is already "in sync"
# Line 428  sub _syncNodes { Line 361  sub _syncNodes {
361      }      }
362    
363      # build map to actually transfer the data from source to target      # build map to actually transfer the data from source to target
364      $self->_buildMap();      if (!$self->buildAttributeMap()) {
365          #$logger->warning( __PACKAGE__ . "->_run: Attribute Map could not be created. Will not insert or modify node.");
366          $tc->{skip}++;
367  #print Dumper($self->{node}); exit;        print "e" if $self->{verbose};
368          next;
369        }
370    
371  #print "attempt", "\n";      # trace
372          #print Dumper($self->{node}); exit;
373          #print "attempt", "\n";
374    
375      # additional (new) checks for feature "write-protection"      # additional (new) checks for feature "write-protection"
376      if ($self->{meta}->{target}->{storage}->{isWriteProtected}) {      if ($self->{meta}->{target}->{storage}->{isWriteProtected}) {
377        $tc->{attempt_transfer}++;        $tc->{attempt_transfer}++;
378        print "\n" if $self->{verbose};        print "\n" if $self->{verbose};
379        $logger->notice( __PACKAGE__ . "->syncNodes: Target is write-protected. Will not insert or modify node. " .        $logger->notice( __PACKAGE__ . "->_run: Target is write-protected. Will not insert or modify node. " .
380            "(Ident: $self->{node}->{source}->{ident} " . "Dump:\n" . Dumper($self->{node}->{source}->{payload}) . ")" );            "(Ident: $self->{node}->{source}->{ident} " . "Dump:\n" . Dumper($self->{node}->{source}->{payload}) . ")" );
381        print "\n" if $self->{verbose};        print "\n" if $self->{verbose};
382        $tc->{skip}++;        $tc->{skip}++;
383        next;        next;
384      }      }
385    
386        # trace
387          #print Dumper($self);
388          #exit;
389    
390      # transfer contents of map to target      # transfer contents of map to target
391      if ($self->{node}->{status}->{new}) {      if ($self->{node}->{status}->{new}) {
392        $tc->{attempt_new}++;        $tc->{attempt_new}++;
# Line 474  sub _syncNodes { Line 415  sub _syncNodes {
415        print "e" if $self->{verbose};        print "e" if $self->{verbose};
416      }      }
417            
418        # trace
419          #print Dumper($self);
420          #exit;
421        
422      # change ident in source (take from target), if transfer was ok and target is an IdentAuthority      # change ident in source (take from target), if transfer was ok and target is an IdentAuthority
423      # this is (for now) called a "retransmit" indicated by a "r"-character when verbosing      # this is (for now) called a "retransmit" indicated by a "r"-character when verbosing
424      if ($self->{node}->{status}->{ok} && $self->{meta}->{target}->{storage}->{isIdentAuthority}) {      #if ($self->{node}->{status}->{ok} && $self->{options}->{target}->{storage}->{idAuthority}) {
425        if ($self->{node}->{status}->{ok} && $self->{meta}->{target}->{isIdentAuthority}) {
426        print "r" if $self->{verbose};        print "r" if $self->{verbose};
427        #print Dumper($self->{meta});        #print Dumper($self->{meta});
428        #print Dumper($self->{node});        #print Dumper($self->{node});
# Line 484  sub _syncNodes { Line 430  sub _syncNodes {
430        $self->_doModifySource_IdentChecksum($self->{node}->{target}->{ident});        $self->_doModifySource_IdentChecksum($self->{node}->{target}->{ident});
431      }      }
432    
     print ":" if $self->{verbose};  
   
433    }    }
434    
435    print "\n" if $self->{verbose};    print "\n" if $self->{verbose};
# Line 501  sub _syncNodes { Line 445  sub _syncNodes {
445            
446      # todo!!!      # todo!!!
447      #sysevent( { usermsg => $msg, level => $level }, $taskEvent );      #sysevent( { usermsg => $msg, level => $level }, $taskEvent );
448      $logger->info( __PACKAGE__ . "->syncNodes: $msg" );      #$logger->info( __PACKAGE__ . "->_run: $msg" );
449        $logger->info($msg . "\n");
450    
451    return $tc;    return $tc;
452    
# Line 552  sub _dumpCompact { Line 497  sub _dumpCompact {
497  }  }
498    
499    
 sub _calcChecksum {  
   
   my $self = shift;  
   my $descent = shift;  
   my $specifier = shift;  
   
   # calculate checksum for current object  
     my $ident = $self->{node}->{$descent}->{ident};  
     
   # build dump of this node  
     my $payload = $self->{node}->{$descent}->{payload};  
     #my $dump = $ident . "\n" . $item->quickdump();  
     #my $dump = $ident . "\n" . Dumper($item);  
     my $dump = $ident . "\n" . $self->_dumpCompact($payload);  
     
   # TODO: $logger->dump( ... );  
     #$logger->debug( __PACKAGE__ . ": " . $dump );  
     #$logger->dump( __PACKAGE__ . ": " . $dump );  
     
   # calculate checksum from dump  
     # note: the 32-bit integer hash from DBI seems  
     # to generate duplicates with small payloads already in ranges of hundreds of items/rows!!!  
     # try to avoid to use it or try to use it only for payloads greater than, hmmm, let's say 30 chars?  
     # (we had about 15 chars average per item (row))  
   
     # md5-based fingerprint, base64 encoded (from Digest::MD5)  
       $self->{node}->{$descent}->{checksum} = md5_base64($dump) . '==';  
     # 32-bit integer "hash" value (maybe faster?) (from DBI)  
       #$self->{node}->{$descent}->{checksum} = DBI::hash($dump, 1);  
   
   # signal good  
   return 1;  
   
 }  
   
   
 sub _readChecksum {  
   my $self = shift;  
   
   my $descent = shift;  
   
   #print "getcheck:", "\n"; print Dumper($self->{node}->{$descent});  
     
   if (!$self->{node}->{$descent}) {  
     # signal checksum bad  
     return;  
   }  
   
   # get checksum for current entry  
   # TODO: don't have the checksum column/property hardcoded as "cs" here, make this configurable somehow  
   
   if ($self->{meta}->{$descent}->{storage}->{isChecksumAuthority}) {  
     #$self->{node}->{$descent}->{checksum} = $entry->{cs};  
     #$self->{node}->{$descent}->{checksum} = $self->_calcChecksum($descent); # $entry->{cs};  
     #print "descent: $descent", "\n";  
     $self->_calcChecksum($descent);  
     #print "checksum: ", $self->{node}->{$descent}->{checksum}, "\n";  
   } else {  
   
     #$self->{node}->{$descent}->{checksum} = $entry->{cs};  
     $self->{node}->{$descent}->{checksum} = $self->{node}->{$descent}->{payload}->{cs};  
   }  
   
   # signal checksum good  
   return 1;  
   
 }  
   
   
 sub _buildMap {  
   
  my $self = shift;  
   
   # field-structure for building sql  
   # mapping of sql-fieldnames to object-attributes  
     $self->{node}->{map} = {};  
   
     # manually set ...  
       # ... object-id  
       $self->{node}->{map}->{$self->{meta}->{target}->{IdentProvider}->{arg}} = $self->{node}->{source}->{ident};  
       # ... checksum  
       $self->{node}->{map}->{cs} = $self->{node}->{source}->{checksum};  
   
 #print "sqlmap: ", Dumper($self->{node}->{map}), "\n";  
   
     # for transferring flat structures via simple (1:1) mapping  
     # TODO: diff per property / property value  
   
     if ($self->{args}->{mapping}) {  
       # apply mapping from $self->{args}->{mapping} to $self->{node}->{map}  
       #foreach my $key (@{$self->{meta}->{source}->{childnodes}}) {  
       my @childnodes = @{$self->{meta}->{source}->{childnodes}};  
       for (my $mapidx = 0; $mapidx <= $#childnodes; $mapidx++) {  
         #my $map_right = $self->{args}->{mapping}->{$key};  
           
         $self->{node}->{source}->{propcache} = {};  
         $self->{node}->{target}->{propcache} = {};  
           
         # get property name  
         $self->{node}->{source}->{propcache}->{property} = $self->{meta}->{source}->{childnodes}->[$mapidx];  
         $self->{node}->{target}->{propcache}->{property} = $self->{meta}->{target}->{childnodes}->[$mapidx];  
         #print "map: $map_right", "\n";  
   
         # get property value  
         my $value;  
           
         # detect for callback - old style - (maybe the better???)  
         if (ref($self->{node}->{target}->{map}) eq 'CODE') {  
           #$value = &$map_right($objClone);  
         } else {  
           # plain (scalar?) value  
           #$value = $objClone->{$map_right};  
           $self->{node}->{source}->{propcache}->{value} = $self->{node}->{source}->{payload}->{$self->{node}->{source}->{propcache}->{property}};  
         }  
         #$self->{node}->{map}->{$key} = $value;  
           
         # detect expression  
         # for transferring deeply nested structures described by expressions  
         #print "val: $self->{node}->{source}->{propcache}->{value}", "\n";  
         if ($self->{node}->{source}->{propcache}->{property} =~ s/^expr://) {  
             
           # create an anonymous sub to act as callback target dispatcher  
             my $cb_dispatcher = sub {  
               #print "===============  CALLBACK DISPATCHER", "\n";  
               #print "ident: ", $self->{node}->{source}->{ident}, "\n";  
               #return $self->{node}->{source}->{ident};  
                 
             };  
             
   
 #print Dumper($self->{node});  
             
           # build callback map for helper function  
           #my $cbmap = { $self->{meta}->{source}->{IdentProvider}->{arg} => $cb_dispatcher };  
           my $cbmap = {};  
           my $value = refexpr2perlref($self->{node}->{source}->{payload}, $self->{node}->{source}->{propcache}->{property}, $cbmap);  
           $self->{node}->{source}->{propcache}->{value} = $value;  
         }  
   
         # encode values dependent on type of underlying storage here - expand cases...  
         my $storage_type = $self->{meta}->{target}->{storage}->{locator}->{type};  
         if ($storage_type eq 'DBI') {  
           # ...for sql  
           $self->{node}->{source}->{propcache}->{value} = quotesql($self->{node}->{source}->{propcache}->{value});  
         }  
          elsif ($storage_type eq 'Tangram') {  
           # iso? utf8 already possible?  
           
         } elsif ($storage_type eq 'LDAP') {  
           # TODO: encode utf8 here?  
         }  
   
         # store value to transfer map  
         $self->{node}->{map}->{$self->{node}->{target}->{propcache}->{property}} = $self->{node}->{source}->{propcache}->{value};  
   
       }  
     }  
   
       
   # TODO: $logger->dump( ... );  
   #$logger->debug( "sqlmap:" . "\n" . Dumper($self->{node}->{map}) );  
 #print "sqlmap: ", Dumper($self->{node}->{map}), "\n";  
 #print "entrystatus: ", Dumper($self->{node}), "\n";  
   
 }  
   
 sub _resolveNodeIdent {  
   my $self = shift;  
   my $descent = shift;  
     
   #print Dumper($self->{node}->{$descent});  
     
   # get to the payload  
     #my $item = $specifier->{item};  
     my $payload = $self->{node}->{$descent}->{payload};  
   
   # resolve method to get to the id of the given item  
   # we use global metadata and the given descent for this task  
     #my $ident = $self->{$descent}->id($item);  
     #my $ident = $self->{meta}->{$descent}->{storage}->id($item);  
   
     my $ident;  
     my $provider_method = $self->{meta}->{$descent}->{IdentProvider}->{method};  
     my $provider_arg = $self->{meta}->{$descent}->{IdentProvider}->{arg};  
   
     # resolve to ident  
     if ($provider_method eq 'property') {  
       $ident = $payload->{$provider_arg};  
   
     } elsif ($provider_method eq 'storage_method') {  
       #$ident = $self->{meta}->{$descent}->{storage}->id($item);  
       $ident = $self->{meta}->{$descent}->{storage}->$provider_arg($payload);  
     }  
       
     $self->{node}->{$descent}->{ident} = $ident;  
       
   return 1 if $ident;  
   
 }  
   
500    
501  sub _modifyNode {  sub _doTransferToTarget {
502    my $self = shift;    my $self = shift;
   my $descent = shift;  
503    my $action = shift;    my $action = shift;
   my $map = shift;  
   my $crit = shift;  
   
   # map for new style callbacks  
   my $map_callbacks = {};  
   
   # checks go first!  
     
     # TODO: this should be reviewed first - before extending  ;-)  
     # TODO: this should be extended:  
     # count this cases inside the caller to this sub and provide a better overall message  
     # if this counts still zero in the end:  
     #     "No nodes have been touched for modify: Do you have column-headers in your csv file?"  
     if (not defined $self->{node}) {  
       #$logger->critical( __PACKAGE__ . "->_modifyNode failed: \"$descent\" node is empty." );  
       #return;  
     }  
   
   # transfer callback nodes from value map to callback map - handle them afterwards! - (new style callbacks)  
   if (my $callbacks = $self->{meta}->{$descent}->{Callback}) {  
     foreach my $callback (keys %{$callbacks->{write}}) {  
       $map_callbacks->{write}->{$callback} = $map->{$callback};  
       delete $map->{$callback};  
     }  
   }  
     
     
   #print Dumper($self->{meta});  
   
   # DBI speaks SQL  
   if ($self->{meta}->{$descent}->{storage}->{locator}->{type} eq 'DBI') {  
   
 #print Dumper($self->{node});  
     my $sql_main;  
     # translate map to sql  
     #print $action, "\n"; exit;  
     #print $self->{meta}->{$descent}->{node}, "\n"; exit;  
     #print "action:";  
     #print $action, "\n";  
 #$action = "anc";  
 #print "yai", "\n";  
   
 #print Dumper($map);  
 #delete $map->{cs};  
   
     if (lc($action) eq 'insert') {  
       $sql_main = hash2Sql($self->{meta}->{$descent}->{node}, $map, 'SQL_INSERT');  
     } elsif (lc $action eq 'update') {  
       $crit ||= "$self->{meta}->{$descent}->{IdentProvider}->{arg}='$self->{node}->{$descent}->{ident}'";  
       $sql_main = hash2Sql($self->{meta}->{$descent}->{node}, $map, 'SQL_UPDATE', $crit);  
     }  
   
 #$sql_main = "UPDATE currencies_csv SET oid='abcdef' WHERE text='Australian Dollar' AND key='AUD';";  
 #$sql_main = "UPDATE currencies_csv SET oid='huhu2' WHERE ekey='AUD'";  
   
 #print "sql: ", $sql_main, "\n";  
 #exit;  
   
     # transfer data  
     my $sqlHandle = $self->{meta}->{$descent}->{storage}->sendCommand($sql_main);  
   
 #exit;  
   
     # handle errors  
     if ($sqlHandle->err) {  
       #if ($self->{args}->{debug}) { print "sql-error with statement: $sql_main", "\n"; }  
       $self->{node}->{status}->{error} = {  
         statement => $sql_main,  
         state => $sqlHandle->state,  
         err => $sqlHandle->err,  
         errstr => $sqlHandle->errstr,  
       };  
     } else {  
       $self->{node}->{status}->{ok} = 1;  
     }  
   
   # Tangram does it the oo-way (naturally)  
   } elsif ($self->{meta}->{$descent}->{storage}->{locator}->{type} eq 'Tangram') {  
     my $sql_main;  
     my $object;  
   
     # determine classname  
     my $classname = $self->{meta}->{$descent}->{node};  
       
     # properties to exclude  
     my @exclude = @{$self->{meta}->{$descent}->{subnodes_exclude}};  
   
   
     if (my $identProvider = $self->{meta}->{$descent}->{IdentProvider}) {  
       push @exclude, $identProvider->{arg};  
     }  
   
     # new feature:  
     #     - check TypeProvider metadata property from other side  
     #     - use argument (arg) inside as a classname for object creation on this side  
     #my $otherSide = $self->_otherSide($descent);  
     if (my $typeProvider = $self->{meta}->{$descent}->{TypeProvider}) {  
       #print Dumper($map);  
       $classname = $map->{$typeProvider->{arg}};  
       # remove nodes from map also (push nodes to "subnodes_exclude" list)  
       push @exclude, $typeProvider->{arg};  
     }  
       
     # exclude banned properties (remove from map)  
     #map { delete $self->{node}->{map}->{$_} } @{$self->{args}->{exclude}};  
     map { delete $map->{$_} } @exclude;  
   
     # list of properties  
     my @props = keys %{$map};  
504            
505      # transfer data    # trace
506      if (lc $action eq 'insert') {      #print Dumper($self->{meta});
507        #print Dumper($self->{node});
508        # build array to initialize object      #exit;
       #my @initarray = ();  
       #map { push @initarray, $_, undef; } @props;  
   
       # make the object persistent in four steps:  
       #   - raw create (perl / class tangram scope)  
       #   - engine insert (tangram scope)   ... this establishes inheritance - don't try to fill in inherited properties before!  
       #   - raw fill-in from hash (perl scope)  
       #   - engine update (tangram scope)  ... this updates all properties just filled in  
         
       # create new object ...  
       #my $object = $classname->new( @initarray );  
       $object = $classname->new();  
         
       # ... pass to orm ...  
       $self->{meta}->{$descent}->{storage}->insert($object);  
   
       # ... and initialize with empty (undef'd) properties.  
       #print Dumper(@props);  
       map { $object->{$_} = undef; } @props;  
   
       # mix in values ...  
       hash2object($object, $map);  
   
       # ... and re-update@orm.  
 #print Dumper($object);  
       $self->{meta}->{$descent}->{storage}->update($object);  
   
       # asymmetry: get ident after insert  
       # TODO:  
       #   - just do this if it is an IdentAuthority  
       #   - use IdentProvider metadata here  
 #print Dumper($self->{meta}->{$descent});  
       my $oid = $self->{meta}->{$descent}->{storage}->id($object);  
 #print "oid: $oid", "\n";  
       $self->{node}->{$descent}->{ident} = $oid;  
   
   
     } elsif (lc $action eq 'update') {  
         
       # get fresh object from orm first  
       $object = $self->{meta}->{$descent}->{storage}->load($self->{node}->{$descent}->{ident});  
   
 #print Dumper($self->{node});  
         
       # mix in values  
       #print Dumper($object);  
       hash2object($object, $map);  
       #print Dumper($object);  
       #exit;  
       $self->{meta}->{$descent}->{storage}->update($object);  
     }  
   
     my $error = 0;  
   
     # handle new style callbacks - this is a HACK - do this without an eval!  
     #print Dumper($map);  
     #print "cb: ", Dumper($self->{meta}->{$descent}->{Callback});  
     #print Dumper($map_callbacks);  
     foreach my $node (keys %{$map_callbacks->{write}}) {  
       #print Dumper($node);  
       my $perl_callback = $self->{meta}->{$descent}->{node} . '::' . $node . '_write';  
       my $evalstring = $perl_callback . '( { object => $object, value => $map_callbacks->{write}->{$node}, storage => $self->{meta}->{$descent}->{storage} } );';  
       #print $evalstring, "\n"; exit;  
       eval($evalstring);  
       if ($@) {  
         $error = 1;  
         print $@, "\n";  
       }  
         
       #print "after eval", "\n";  
         
       if (!$error) {  
         # re-update@orm  
         $self->{meta}->{$descent}->{storage}->update($object);  
       }  
     }  
     
     # handle errors  
     if ($error) {  
       #print "error", "\n";  
 =pod  
       my $sqlHandle;  
       #if ($self->{args}->{debug}) { print "sql-error with statement: $sql_main", "\n"; }  
       $self->{node}->{status}->{error} = {  
         statement => $sql_main,  
         state => $sqlHandle->state,  
         err => $sqlHandle->err,  
         errstr => $sqlHandle->errstr,  
       };  
 =cut  
       # rollback....  
       #print "rollback", "\n";  
       $self->{meta}->{$descent}->{storage}->erase($object);  
       #print "after rollback", "\n";  
     } else {  
       $self->{node}->{status}->{ok} = 1;  
     }  
   
   
   }  
   
 }  
   
 # TODO:  
 # this should be split up into...  
 #   - a "_statNode" (should just touch the node to check for existance)  
 #   - a "_loadNode" (should load node completely)  
 #   - maybe additionally a "loadNodeProperty" (may specify properties to load)  
 #   - introduce $self->{nodecache} for this purpose  
 # TODO:  
 #   should we:  
 #     - not pass ident in here but resolve it via "$descent"?  
 #     - refactor this and stuff it with additional debug/error message  
 #       - this = the way the implicit load mechanism works  
 sub _statloadNode {  
   
   my $self = shift;  
   my $descent = shift;  
   my $ident = shift;  
   my $force = shift;  
   
   # fetch entry to retrieve checksum from  
   # was:  
   if (!$self->{node}->{$descent} || $force) {  
   # is:  
   #if (!$self->{node}->{$descent}->{item} || $force) {  
       
     if (!$ident) {  
       #print "\n", "Attempt to fetch entry implicitely by ident failed: no ident given! This may result in an insert if no write-protection is in the way.", "\n";  
       return;  
     }  
       
     # patch for DBD::CSV  
     if ($ident && $ident eq 'Null') {  
       return;  
     }  
   
 #print "yai!", "\n";  
   
     my $query = {  
       node => $self->{meta}->{$descent}->{node},  
       subnodes => [qw( cs )],  
       criterias => [  
         { key => $self->{meta}->{$descent}->{IdentProvider}->{arg},  
            op => 'eq',  
            val => $ident },  
       ]  
     };  
   
 #print Dumper($query);  
   
     my $result = $self->{meta}->{$descent}->{storage}->sendQuery($query);  
   
     my $entry = $result->getNextEntry();  
   
 #print Dumper($entry);  
 #print "pers: " . $self->{meta}->{$descent}->{storage}->is_persistent($entry), "\n";  
 #my $state = $self->{meta}->{$descent}->{storage}->_fetch_object_state($entry, { name => 'TransactionHop' } );  
 #print Dumper($state);  
   
     my $status = $result->getStatus();  
   
 #print Dumper($status);  
       
     # TODO: enhance error handling (store inside tc)  
     #if (!$row) {  
     #  print "\n", "row error", "\n";  
     #  next;  
     #}  
   
     # these checks run before actually loading payload- and meta-data to node-container  
509            
       # 1st level - hard error  
       if ($status && $status->{err}) {  
         $logger->debug( __PACKAGE__ . "->_statloadNode (ident=\"$ident\") failed - hard error (that's ok): $status->{err}" );  
         return;  
       }  
     
       # 2nd level - logical (empty/notfound) error  
       if (($status && $status->{empty}) || !$entry) {  
         $logger->debug( __PACKAGE__ . "->_statloadNode (ident=\"$ident\") failed - logical error (that's ok)" );  
         #print "no entry (logical)", "\n";  
         return;  
       }  
   
 #print Dumper($entry);  
   
     # was:  
     # $self->{node}->{$descent}->{ident} = $ident;    
     # is:  
     # TODO: re-resolve ident from entry via metadata "IdentProvider" here - like elsewhere  
     $self->{node}->{$descent}->{ident} = $ident;  
     $self->{node}->{$descent}->{payload} = $entry;  
   
   }  
     
   return 1;  
     
 }  
   
 sub _doTransferToTarget {  
   my $self = shift;  
   my $action = shift;  
510    $self->_modifyNode('target', $action, $self->{node}->{map});    $self->_modifyNode('target', $action, $self->{node}->{map});
511  }  }
512    
513    
514  sub _doModifySource_IdentChecksum {  sub _doModifySource_IdentChecksum {
515    my $self = shift;    my $self = shift;
516    my $ident_new = shift;    my $ident_new = shift;
# Line 1097  sub _doModifySource_IdentChecksum { Line 531  sub _doModifySource_IdentChecksum {
531  }  }
532    
533    
 # this is a shortcut method  
 # ... let's try to avoid _any_ redundant code in here (ok... - at the cost of method lookups...)  
 sub _getNodeList {  
   my $self = shift;  
   my $descent = shift;  
   my $filter = shift;  
   return $self->{meta}->{$descent}->{storage}->getListFiltered($self->{meta}->{$descent}->{node}, $filter);  
 }  
   
534    
535  sub _prepareNode_MetaProperties {  sub _prepareNode_MetaProperties {
536    my $self = shift;    my $self = shift;
# Line 1182  sub _prepareNode_DummyIdent { Line 607  sub _prepareNode_DummyIdent {
607      $i++;      $i++;
608    }    }
609    
610    print "\n" if $self->{verbose};    #print "\n" if $self->{verbose};
611        
612    if (!$i) {    if (!$i) {
613      $logger->warning( __PACKAGE__ . "->_prepareNode_DummyIdent: no nodes touched" );      $logger->warning( __PACKAGE__ . "->_prepareNode_DummyIdent: no nodes touched" );
# Line 1199  sub _otherSide { Line 624  sub _otherSide {
624    return '';    return '';
625  }  }
626    
 sub _erase_all {  
   my $self = shift;  
   my $descent = shift;  
   #my $node = shift;  
   my $node = $self->{meta}->{$descent}->{node};  
   $self->{meta}->{$descent}->{storage}->eraseAll($node);  
 }  
627    
628  1;  1;
629    __END__
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