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## $Id: Core.pm,v 1.2 2003/01/19 02:05:42 joko Exp $ |
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## |
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## Copyright (c) 2002 Andreas Motl <andreas.motl@ilo.de> |
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## |
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## See COPYRIGHT section in pod text below for usage and distribution rights. |
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## |
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## ---------------------------------------------------------------------------------------- |
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## $Log: Core.pm,v $ |
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## Revision 1.2 2003/01/19 02:05:42 joko |
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## - removed pod-documentation: now in Data/Transfer/Sync.pod |
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## |
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## Revision 1.1 2003/01/19 01:23:04 joko |
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## + new from Data/Transfer/Sync.pm |
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## |
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## Revision 1.11 2002/12/23 07:10:59 joko |
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## + using MD5 for checksum generation again - the 32-bit integer hash from DBI seems to be too lazy |
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## |
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## Revision 1.10 2002/12/19 01:07:16 joko |
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## + fixed output done via $logger |
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## |
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## Revision 1.9 2002/12/16 07:02:34 jonen |
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## + added comment |
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## |
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## Revision 1.8 2002/12/15 02:03:09 joko |
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## + fixed logging-messages |
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## + additional metadata-checks |
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## |
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## Revision 1.7 2002/12/13 21:49:34 joko |
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## + sub configure |
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## + sub checkOptions |
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## |
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## Revision 1.6 2002/12/06 04:49:10 jonen |
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## + disabled output-puffer here |
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## |
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## Revision 1.5 2002/12/05 08:06:05 joko |
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## + bugfix with determining empty fields (Null) with DBD::CSV |
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## + debugging |
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## + updated comments |
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## |
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## Revision 1.4 2002/12/03 15:54:07 joko |
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## + {import}-flag is now {prepare}-flag |
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## |
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## Revision 1.3 2002/12/01 22:26:59 joko |
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## + minor cosmetics for logging |
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## |
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## Revision 1.2 2002/12/01 04:43:25 joko |
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## + mapping deatil entries may now be either an ARRAY or a HASH |
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## + erase flag is used now (for export-operations) |
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## + expressions to refer to values inside deep nested structures |
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## - removed old mappingV2-code |
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## + cosmetics |
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## + sub _erase_all |
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## |
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## Revision 1.1 2002/11/29 04:45:50 joko |
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## + initial check in |
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## |
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## Revision 1.1 2002/10/10 03:44:21 cvsjoko |
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## + new |
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## ---------------------------------------------------------------------------------------- |
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|
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|
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package Data::Transfer::Sync::Core; |
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|
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use strict; |
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use warnings; |
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|
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use mixin::with qw( Data::Transfer::Sync ); |
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|
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|
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - main |
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|
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use Data::Dumper; |
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|
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use misc::HashExt; |
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use libp qw( md5_base64 ); |
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use libdb qw( quotesql hash2Sql ); |
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use Data::Transform::Deep qw( hash2object refexpr2perlref ); |
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use Data::Compare::Struct qw( getDifference isEmpty ); |
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use Data::Storage::Container; |
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use DesignPattern::Object; |
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|
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# get logger instance |
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my $logger = Log::Dispatch::Config->instance; |
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|
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$| = 1; |
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|
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=pod |
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sub new { |
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my $invocant = shift; |
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my $class = ref($invocant) || $invocant; |
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my $self = {}; |
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$logger->debug( __PACKAGE__ . "->new(@_)" ); |
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bless $self, $class; |
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$self->configure(@_); |
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return $self; |
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} |
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=cut |
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|
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|
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sub _init { |
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my $self = shift; |
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|
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# build new container if necessary |
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$self->{container} = Data::Storage::Container->new() if !$self->{container}; |
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|
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# add storages to container (optional) |
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foreach (keys %{$self->{storages}}) { |
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$self->{container}->addStorage($_, $self->{storages}->{$_}); |
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} |
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|
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return 1; |
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|
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} |
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|
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sub _initV1 { |
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my $self = shift; |
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# tag storages with id-authority and checksum-provider information |
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# TODO: better store tag inside metadata to hold bits together! |
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map { $self->{container}->{storage}->{$_}->{isIdentAuthority} = 1 } @{$self->{id_authorities}}; |
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map { $self->{container}->{storage}->{$_}->{isChecksumAuthority} = 1; } @{$self->{checksum_authorities}}; |
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map { $self->{container}->{storage}->{$_}->{isWriteProtected} = 1; } @{$self->{write_protected}}; |
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} |
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|
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|
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# TODO: abstract the hardwired use of "source" and "target" in here somehow - hmmmm....... /(="ยง/%??? |
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sub _syncNodes { |
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|
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my $self = shift; |
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|
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my $tc = OneLineDumpHash->new( {} ); |
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my $results; |
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|
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# set of objects is already in $self->{args} |
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# TODO: make independent of the terminology "object..." |
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$results = $self->{args}->{objectSet} if $self->{args}->{objectSet}; |
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|
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# apply filter |
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if (my $filter = $self->{meta}->{source}->{filter}) { |
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#print Dumper($filter); |
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#exit; |
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$results ||= $self->_getNodeList('source', $filter); |
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} |
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|
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# get reference to node list from convenient method provided by CORE-HANDLE |
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$results ||= $self->_getNodeList('source'); |
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|
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# checkpoint: do we actually have a list to iterate through? |
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if (!$results || !@{$results}) { |
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$logger->notice( __PACKAGE__ . "->syncNodes: No nodes to synchronize." ); |
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return; |
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} |
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|
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# dereference |
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my @results = @{$results}; |
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|
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# iterate through set |
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foreach my $source_node_real (@results) { |
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|
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$tc->{total}++; |
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|
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#print "======================== iter", "\n"; |
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|
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# clone object (in case we have to modify it here) |
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# TODO: |
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# - is a "deep_copy" needed here if occouring modifications take place? |
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# - puuhhhh, i guess a deep_copy would destroy tangram mechanisms? |
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# - after all, just take care for now that this object doesn't get updated! |
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my $source_node = $source_node_real; |
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|
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# modify entry - handle new style callbacks (the readers) |
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#print Dumper($source_node); |
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#exit; |
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|
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my $descent = 'source'; |
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|
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# handle callbacks right now while scanning them (asymmetric to the writers) |
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my $map_callbacks = {}; |
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if (my $callbacks = $self->{meta}->{$descent}->{Callback}) { |
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|
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my $error = 0; |
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|
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foreach my $node (keys %{$callbacks->{read}}) { |
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|
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my $object = $source_node; |
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my $value; # = $source_node->{$node}; |
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|
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# ------------ half-redundant: make $self->callCallback($object, $value, $opts) |
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#my $perl_callback = $self->{meta}->{$descent}->{node} . '::' . $node . '_read'; |
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my $perl_callback = $self->{meta}->{$descent}->{nodeType} . '::' . $node . '_read'; |
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my $evalstring = 'return ' . $perl_callback . '( { object => $object, property => $node, value => $value, storage => $self->{meta}->{$descent}->{storage} } );'; |
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#print $evalstring, "\n"; exit; |
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my $cb_result = eval($evalstring); |
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if ($@) { |
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die $@; |
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$error = 1; |
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print $@, "\n"; |
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} |
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# ------------ half-redundant: make $self->callCallback($object, $value, $opts) |
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|
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$source_node->{$node} = $cb_result; |
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|
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} |
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|
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} |
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|
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#print Dumper($source_node); |
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|
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# exclude defined fields (simply delete from object) |
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map { delete $source_node->{$_} } @{$self->{meta}->{source}->{subnodes_exclude}}; |
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|
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# here we accumulate information about the status of the current node (payload/row/object/item/entry) |
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$self->{node} = {}; |
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$self->{node}->{source}->{payload} = $source_node; |
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|
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#print "res - ident", "\n"; |
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|
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# determine ident of entry |
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my $identOK = $self->_resolveNodeIdent('source'); |
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#if (!$identOK && lc $self->{args}->{direction} ne 'import') { |
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if (!$identOK) { |
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#print Dumper($self->{meta}->{source}); |
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$logger->critical( __PACKAGE__ . "->syncNodes: No ident found in source node ( nodeName='$self->{meta}->{source}->{nodeName}', nodeType='$self->{meta}->{source}->{nodeType}') try to \"prepare\" this node first?" ); |
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return; |
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} |
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|
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my $statOK = $self->_statloadNode('target', $self->{node}->{source}->{ident}); |
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|
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# mark node as new either if there's no ident or if stat/load failed |
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if (!$statOK) { |
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$self->{node}->{status}->{new} = 1; |
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print "n" if $self->{verbose}; |
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} |
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|
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#print "checksum", "\n"; |
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|
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# determine status of entry by synchronization method |
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if ( (lc $self->{args}->{method} eq 'checksum') ) { |
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#if ( $statOK && (lc $self->{args}->{method} eq 'checksum') ) { |
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#if ( !$self->{node}->{status}->{new} && (lc $self->{args}->{method} eq 'checksum') ) { |
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|
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# TODO: |
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# is this really worth a "critical"??? |
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# no - it should just be a debug appendix i believe |
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|
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#print "readcs", "\n"; |
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|
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# calculate checksum of source node |
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#$self->_calcChecksum('source'); |
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if (!$self->_readChecksum('source')) { |
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$logger->critical( __PACKAGE__ . "->_readChecksum: Could not find \"source\" entry with ident=\"$self->{node}->{source}->{ident}\"" ); |
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$tc->{skip}++; |
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print "s" if $self->{verbose}; |
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next; |
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} |
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|
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# get checksum from synchronization target |
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$self->_readChecksum('target'); |
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#if (!$self->_readChecksum('target')) { |
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# $logger->critical( __PACKAGE__ . "->_readChecksum: Could not find \"target\" entry with ident=\"$self->{node}->{source}->{ident}\"" ); |
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# next; |
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#} |
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|
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# pre flight check: do we actually have a checksum provided? |
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#if (!$self->{node}->{source}->{checksum}) { |
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# print "Source checksum for entry with ident \"$self->{node}->{source}->{ident}\" could not be calculated, maybe it's missing?.", "\n"; |
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# return; |
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#} |
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|
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# determine if entry is "new" or "dirty" |
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# after all, this seems to be the point where the hammer falls..... |
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print "c" if $self->{verbose}; |
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$self->{node}->{status}->{new} = !$self->{node}->{target}->{checksum}; |
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if (!$self->{node}->{status}->{new}) { |
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$self->{node}->{status}->{dirty} = |
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$self->{node}->{status}->{new} || |
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(!$self->{node}->{source}->{checksum} || !$self->{node}->{target}->{checksum}) || |
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($self->{node}->{source}->{checksum} ne $self->{node}->{target}->{checksum}) || |
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$self->{args}->{force}; |
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} |
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|
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} |
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|
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# first reaction on entry-status: continue with next entry if the current is already "in sync" |
284 |
if (!$self->{node}->{status}->{new} && !$self->{node}->{status}->{dirty}) { |
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$tc->{in_sync}++; |
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next; |
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} |
288 |
|
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# build map to actually transfer the data from source to target |
290 |
$self->_buildMap(); |
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|
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|
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#print Dumper($self->{node}); exit; |
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|
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#print "attempt", "\n"; |
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|
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# additional (new) checks for feature "write-protection" |
298 |
if ($self->{meta}->{target}->{storage}->{isWriteProtected}) { |
299 |
$tc->{attempt_transfer}++; |
300 |
print "\n" if $self->{verbose}; |
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$logger->notice( __PACKAGE__ . "->syncNodes: Target is write-protected. Will not insert or modify node. " . |
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"(Ident: $self->{node}->{source}->{ident} " . "Dump:\n" . Dumper($self->{node}->{source}->{payload}) . ")" ); |
303 |
print "\n" if $self->{verbose}; |
304 |
$tc->{skip}++; |
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next; |
306 |
} |
307 |
|
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# transfer contents of map to target |
309 |
if ($self->{node}->{status}->{new}) { |
310 |
$tc->{attempt_new}++; |
311 |
$self->_doTransferToTarget('insert'); |
312 |
# asymmetry: refetch node from target to re-calculate new ident and checksum (TODO: is IdentAuthority of relevance here?) |
313 |
#print Dumper($self->{node}); |
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$self->_statloadNode('target', $self->{node}->{target}->{ident}, 1); |
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$self->_readChecksum('target'); |
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|
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} elsif ($self->{node}->{status}->{dirty}) { |
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$tc->{attempt_modify}++; |
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# asymmetry: get ident before updating (TODO: is IdentAuthority of relevance here?) |
320 |
$self->{node}->{target}->{ident} = $self->{node}->{map}->{$self->{meta}->{target}->{IdentProvider}->{arg}}; |
321 |
$self->_doTransferToTarget('update'); |
322 |
$self->_readChecksum('target'); |
323 |
} |
324 |
|
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if ($self->{node}->{status}->{ok}) { |
326 |
$tc->{ok}++; |
327 |
print "t" if $self->{verbose}; |
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} |
329 |
|
330 |
if ($self->{node}->{status}->{error}) { |
331 |
$tc->{error}++; |
332 |
push( @{$tc->{error_per_row}}, $self->{node}->{status}->{error} ); |
333 |
print "e" if $self->{verbose}; |
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} |
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|
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# change ident in source (take from target), if transfer was ok and target is an IdentAuthority |
337 |
# this is (for now) called a "retransmit" indicated by a "r"-character when verbosing |
338 |
if ($self->{node}->{status}->{ok} && $self->{meta}->{target}->{storage}->{isIdentAuthority}) { |
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print "r" if $self->{verbose}; |
340 |
#print Dumper($self->{meta}); |
341 |
#print Dumper($self->{node}); |
342 |
#exit; |
343 |
$self->_doModifySource_IdentChecksum($self->{node}->{target}->{ident}); |
344 |
} |
345 |
|
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print ":" if $self->{verbose}; |
347 |
|
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} |
349 |
|
350 |
print "\n" if $self->{verbose}; |
351 |
|
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# build user-message from some stats |
353 |
my $msg = "statistics: $tc"; |
354 |
|
355 |
if ($tc->{error_per_row}) { |
356 |
$msg .= "\n"; |
357 |
$msg .= "errors from \"error_per_row\":" . "\n"; |
358 |
$msg .= Dumper($tc->{error_per_row}); |
359 |
} |
360 |
|
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# todo!!! |
362 |
#sysevent( { usermsg => $msg, level => $level }, $taskEvent ); |
363 |
$logger->info( __PACKAGE__ . "->syncNodes: $msg" ); |
364 |
|
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return $tc; |
366 |
|
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} |
368 |
|
369 |
|
370 |
# refactor this as some core-function to do a generic dump resolving data-encapsulations of e.g. Set::Object |
371 |
sub _dumpCompact { |
372 |
my $self = shift; |
373 |
|
374 |
#my $vars = \@_; |
375 |
my @data = (); |
376 |
|
377 |
my $count = 0; |
378 |
foreach (@_) { |
379 |
my $item = {}; |
380 |
foreach my $key (keys %$_) { |
381 |
my $val = $_->{$key}; |
382 |
|
383 |
#print Dumper($val); |
384 |
|
385 |
if (ref $val eq 'Set::Object') { |
386 |
#print "========================= SET", "\n"; |
387 |
#print Dumper($val); |
388 |
#print Dumper($val->members()); |
389 |
#$val = $val->members(); |
390 |
#$vars->[$count]->{$key} = $val->members() if $val->can("members"); |
391 |
#$item->{$key} = $val->members() if $val->can("members"); |
392 |
$item->{$key} = $val->members(); |
393 |
#print Dumper($vars->[$count]->{$key}); |
394 |
|
395 |
} else { |
396 |
$item->{$key} = $val; |
397 |
} |
398 |
|
399 |
} |
400 |
push @data, $item; |
401 |
$count++; |
402 |
} |
403 |
|
404 |
#print "Dump:", Dumper(@data), "\n"; |
405 |
|
406 |
$Data::Dumper::Indent = 0; |
407 |
my $result = Dumper(@data); |
408 |
$Data::Dumper::Indent = 2; |
409 |
return $result; |
410 |
|
411 |
} |
412 |
|
413 |
|
414 |
sub _calcChecksum { |
415 |
|
416 |
my $self = shift; |
417 |
my $descent = shift; |
418 |
my $specifier = shift; |
419 |
|
420 |
# calculate checksum for current object |
421 |
my $ident = $self->{node}->{$descent}->{ident}; |
422 |
|
423 |
# build dump of this node |
424 |
my $payload = $self->{node}->{$descent}->{payload}; |
425 |
#my $dump = $ident . "\n" . $item->quickdump(); |
426 |
#my $dump = $ident . "\n" . Dumper($item); |
427 |
my $dump = $ident . "\n" . $self->_dumpCompact($payload); |
428 |
|
429 |
# TODO: $logger->dump( ... ); |
430 |
#$logger->debug( __PACKAGE__ . ": " . $dump ); |
431 |
#$logger->dump( __PACKAGE__ . ": " . $dump ); |
432 |
|
433 |
# calculate checksum from dump |
434 |
# note: the 32-bit integer hash from DBI seems |
435 |
# to generate duplicates with small payloads already in ranges of hundreds of items/rows!!! |
436 |
# try to avoid to use it or try to use it only for payloads greater than, hmmm, let's say 30 chars? |
437 |
# (we had about 15 chars average per item (row)) |
438 |
|
439 |
# md5-based fingerprint, base64 encoded (from Digest::MD5) |
440 |
$self->{node}->{$descent}->{checksum} = md5_base64($dump) . '=='; |
441 |
# 32-bit integer "hash" value (maybe faster?) (from DBI) |
442 |
#$self->{node}->{$descent}->{checksum} = DBI::hash($dump, 1); |
443 |
|
444 |
# signal good |
445 |
return 1; |
446 |
|
447 |
} |
448 |
|
449 |
|
450 |
sub _readChecksum { |
451 |
my $self = shift; |
452 |
|
453 |
my $descent = shift; |
454 |
|
455 |
#print "getcheck:", "\n"; print Dumper($self->{node}->{$descent}); |
456 |
|
457 |
if (!$self->{node}->{$descent}) { |
458 |
# signal checksum bad |
459 |
return; |
460 |
} |
461 |
|
462 |
# get checksum for current entry |
463 |
# TODO: don't have the checksum column/property hardcoded as "cs" here, make this configurable somehow |
464 |
|
465 |
if ($self->{meta}->{$descent}->{storage}->{isChecksumAuthority}) { |
466 |
#$self->{node}->{$descent}->{checksum} = $entry->{cs}; |
467 |
#$self->{node}->{$descent}->{checksum} = $self->_calcChecksum($descent); # $entry->{cs}; |
468 |
#print "descent: $descent", "\n"; |
469 |
$self->_calcChecksum($descent); |
470 |
#print "checksum: ", $self->{node}->{$descent}->{checksum}, "\n"; |
471 |
} else { |
472 |
|
473 |
#$self->{node}->{$descent}->{checksum} = $entry->{cs}; |
474 |
$self->{node}->{$descent}->{checksum} = $self->{node}->{$descent}->{payload}->{cs}; |
475 |
} |
476 |
|
477 |
# signal checksum good |
478 |
return 1; |
479 |
|
480 |
} |
481 |
|
482 |
|
483 |
sub _buildMap { |
484 |
|
485 |
my $self = shift; |
486 |
|
487 |
# field-structure for building sql |
488 |
# mapping of sql-fieldnames to object-attributes |
489 |
$self->{node}->{map} = {}; |
490 |
|
491 |
# manually set ... |
492 |
# ... object-id |
493 |
$self->{node}->{map}->{$self->{meta}->{target}->{IdentProvider}->{arg}} = $self->{node}->{source}->{ident}; |
494 |
# ... checksum |
495 |
$self->{node}->{map}->{cs} = $self->{node}->{source}->{checksum}; |
496 |
|
497 |
#print "sqlmap: ", Dumper($self->{node}->{map}), "\n"; |
498 |
|
499 |
# for transferring flat structures via simple (1:1) mapping |
500 |
# TODO: diff per property / property value |
501 |
|
502 |
if ($self->{args}->{mapping}) { |
503 |
# apply mapping from $self->{args}->{mapping} to $self->{node}->{map} |
504 |
#foreach my $key (@{$self->{meta}->{source}->{childnodes}}) { |
505 |
my @childnodes = @{$self->{meta}->{source}->{childnodes}}; |
506 |
for (my $mapidx = 0; $mapidx <= $#childnodes; $mapidx++) { |
507 |
#my $map_right = $self->{args}->{mapping}->{$key}; |
508 |
|
509 |
$self->{node}->{source}->{propcache} = {}; |
510 |
$self->{node}->{target}->{propcache} = {}; |
511 |
|
512 |
# get property name |
513 |
$self->{node}->{source}->{propcache}->{property} = $self->{meta}->{source}->{childnodes}->[$mapidx]; |
514 |
$self->{node}->{target}->{propcache}->{property} = $self->{meta}->{target}->{childnodes}->[$mapidx]; |
515 |
#print "map: $map_right", "\n"; |
516 |
|
517 |
# get property value |
518 |
my $value; |
519 |
|
520 |
# detect for callback - old style - (maybe the better???) |
521 |
if (ref($self->{node}->{target}->{map}) eq 'CODE') { |
522 |
#$value = &$map_right($objClone); |
523 |
} else { |
524 |
# plain (scalar?) value |
525 |
#$value = $objClone->{$map_right}; |
526 |
$self->{node}->{source}->{propcache}->{value} = $self->{node}->{source}->{payload}->{$self->{node}->{source}->{propcache}->{property}}; |
527 |
} |
528 |
#$self->{node}->{map}->{$key} = $value; |
529 |
|
530 |
# detect expression |
531 |
# for transferring deeply nested structures described by expressions |
532 |
#print "val: $self->{node}->{source}->{propcache}->{value}", "\n"; |
533 |
if ($self->{node}->{source}->{propcache}->{property} =~ s/^expr://) { |
534 |
|
535 |
# create an anonymous sub to act as callback target dispatcher |
536 |
my $cb_dispatcher = sub { |
537 |
#print "=============== CALLBACK DISPATCHER", "\n"; |
538 |
#print "ident: ", $self->{node}->{source}->{ident}, "\n"; |
539 |
#return $self->{node}->{source}->{ident}; |
540 |
|
541 |
}; |
542 |
|
543 |
|
544 |
#print Dumper($self->{node}); |
545 |
|
546 |
# build callback map for helper function |
547 |
#my $cbmap = { $self->{meta}->{source}->{IdentProvider}->{arg} => $cb_dispatcher }; |
548 |
my $cbmap = {}; |
549 |
my $value = refexpr2perlref($self->{node}->{source}->{payload}, $self->{node}->{source}->{propcache}->{property}, $cbmap); |
550 |
$self->{node}->{source}->{propcache}->{value} = $value; |
551 |
} |
552 |
|
553 |
# encode values dependent on type of underlying storage here - expand cases... |
554 |
my $storage_type = $self->{meta}->{target}->{storage}->{locator}->{type}; |
555 |
if ($storage_type eq 'DBI') { |
556 |
# ...for sql |
557 |
$self->{node}->{source}->{propcache}->{value} = quotesql($self->{node}->{source}->{propcache}->{value}); |
558 |
} |
559 |
elsif ($storage_type eq 'Tangram') { |
560 |
# iso? utf8 already possible? |
561 |
|
562 |
} elsif ($storage_type eq 'LDAP') { |
563 |
# TODO: encode utf8 here? |
564 |
} |
565 |
|
566 |
# store value to transfer map |
567 |
$self->{node}->{map}->{$self->{node}->{target}->{propcache}->{property}} = $self->{node}->{source}->{propcache}->{value}; |
568 |
|
569 |
} |
570 |
} |
571 |
|
572 |
|
573 |
# TODO: $logger->dump( ... ); |
574 |
#$logger->debug( "sqlmap:" . "\n" . Dumper($self->{node}->{map}) ); |
575 |
#print "sqlmap: ", Dumper($self->{node}->{map}), "\n"; |
576 |
#print "entrystatus: ", Dumper($self->{node}), "\n"; |
577 |
|
578 |
} |
579 |
|
580 |
|
581 |
|
582 |
sub _modifyNode { |
583 |
my $self = shift; |
584 |
my $descent = shift; |
585 |
my $action = shift; |
586 |
my $map = shift; |
587 |
my $crit = shift; |
588 |
|
589 |
# map for new style callbacks |
590 |
my $map_callbacks = {}; |
591 |
|
592 |
# checks go first! |
593 |
|
594 |
# TODO: this should be reviewed first - before extending ;-) |
595 |
# TODO: this should be extended: |
596 |
# count this cases inside the caller to this sub and provide a better overall message |
597 |
# if this counts still zero in the end: |
598 |
# "No nodes have been touched for modify: Do you have column-headers in your csv file?" |
599 |
if (not defined $self->{node}) { |
600 |
#$logger->critical( __PACKAGE__ . "->_modifyNode failed: \"$descent\" node is empty." ); |
601 |
#return; |
602 |
} |
603 |
|
604 |
# transfer callback nodes from value map to callback map - handle them afterwards! - (new style callbacks) |
605 |
if (my $callbacks = $self->{meta}->{$descent}->{Callback}) { |
606 |
foreach my $callback (keys %{$callbacks->{write}}) { |
607 |
$map_callbacks->{write}->{$callback} = $map->{$callback}; |
608 |
delete $map->{$callback}; |
609 |
} |
610 |
} |
611 |
|
612 |
|
613 |
#print Dumper($self->{meta}); |
614 |
|
615 |
# DBI speaks SQL |
616 |
if ($self->{meta}->{$descent}->{storage}->{locator}->{type} eq 'DBI') { |
617 |
|
618 |
#print Dumper($self->{node}); |
619 |
my $sql_main; |
620 |
# translate map to sql |
621 |
#print $action, "\n"; exit; |
622 |
#print $self->{meta}->{$descent}->{node}, "\n"; exit; |
623 |
#print "action:"; |
624 |
#print $action, "\n"; |
625 |
#$action = "anc"; |
626 |
#print "yai", "\n"; |
627 |
|
628 |
#print Dumper($map); |
629 |
#delete $map->{cs}; |
630 |
|
631 |
if (lc($action) eq 'insert') { |
632 |
$sql_main = hash2Sql($self->{meta}->{$descent}->{node}, $map, 'SQL_INSERT'); |
633 |
} elsif (lc $action eq 'update') { |
634 |
$crit ||= "$self->{meta}->{$descent}->{IdentProvider}->{arg}='$self->{node}->{$descent}->{ident}'"; |
635 |
$sql_main = hash2Sql($self->{meta}->{$descent}->{node}, $map, 'SQL_UPDATE', $crit); |
636 |
} |
637 |
|
638 |
#$sql_main = "UPDATE currencies_csv SET oid='abcdef' WHERE text='Australian Dollar' AND key='AUD';"; |
639 |
#$sql_main = "UPDATE currencies_csv SET oid='huhu2' WHERE ekey='AUD'"; |
640 |
|
641 |
#print "sql: ", $sql_main, "\n"; |
642 |
#exit; |
643 |
|
644 |
# transfer data |
645 |
my $sqlHandle = $self->{meta}->{$descent}->{storage}->sendCommand($sql_main); |
646 |
|
647 |
#exit; |
648 |
|
649 |
# handle errors |
650 |
if ($sqlHandle->err) { |
651 |
#if ($self->{args}->{debug}) { print "sql-error with statement: $sql_main", "\n"; } |
652 |
$self->{node}->{status}->{error} = { |
653 |
statement => $sql_main, |
654 |
state => $sqlHandle->state, |
655 |
err => $sqlHandle->err, |
656 |
errstr => $sqlHandle->errstr, |
657 |
}; |
658 |
} else { |
659 |
$self->{node}->{status}->{ok} = 1; |
660 |
} |
661 |
|
662 |
# Tangram does it the oo-way (naturally) |
663 |
} elsif ($self->{meta}->{$descent}->{storage}->{locator}->{type} eq 'Tangram') { |
664 |
my $sql_main; |
665 |
my $object; |
666 |
|
667 |
# determine classname |
668 |
my $classname = $self->{meta}->{$descent}->{node}; |
669 |
|
670 |
# properties to exclude |
671 |
my @exclude = @{$self->{meta}->{$descent}->{subnodes_exclude}}; |
672 |
|
673 |
|
674 |
if (my $identProvider = $self->{meta}->{$descent}->{IdentProvider}) { |
675 |
push @exclude, $identProvider->{arg}; |
676 |
} |
677 |
|
678 |
# new feature: |
679 |
# - check TypeProvider metadata property from other side |
680 |
# - use argument (arg) inside as a classname for object creation on this side |
681 |
#my $otherSide = $self->_otherSide($descent); |
682 |
if (my $typeProvider = $self->{meta}->{$descent}->{TypeProvider}) { |
683 |
#print Dumper($map); |
684 |
$classname = $map->{$typeProvider->{arg}}; |
685 |
# remove nodes from map also (push nodes to "subnodes_exclude" list) |
686 |
push @exclude, $typeProvider->{arg}; |
687 |
} |
688 |
|
689 |
# exclude banned properties (remove from map) |
690 |
#map { delete $self->{node}->{map}->{$_} } @{$self->{args}->{exclude}}; |
691 |
map { delete $map->{$_} } @exclude; |
692 |
|
693 |
# list of properties |
694 |
my @props = keys %{$map}; |
695 |
|
696 |
# transfer data |
697 |
if (lc $action eq 'insert') { |
698 |
|
699 |
# build array to initialize object |
700 |
#my @initarray = (); |
701 |
#map { push @initarray, $_, undef; } @props; |
702 |
|
703 |
# make the object persistent in four steps: |
704 |
# - raw create (perl / class tangram scope) |
705 |
# - engine insert (tangram scope) ... this establishes inheritance - don't try to fill in inherited properties before! |
706 |
# - raw fill-in from hash (perl scope) |
707 |
# - engine update (tangram scope) ... this updates all properties just filled in |
708 |
|
709 |
# create new object ... |
710 |
#my $object = $classname->new( @initarray ); |
711 |
$object = $classname->new(); |
712 |
|
713 |
# ... pass to orm ... |
714 |
$self->{meta}->{$descent}->{storage}->insert($object); |
715 |
|
716 |
# ... and initialize with empty (undef'd) properties. |
717 |
#print Dumper(@props); |
718 |
map { $object->{$_} = undef; } @props; |
719 |
|
720 |
# mix in values ... |
721 |
hash2object($object, $map); |
722 |
|
723 |
# ... and re-update@orm. |
724 |
#print Dumper($object); |
725 |
$self->{meta}->{$descent}->{storage}->update($object); |
726 |
|
727 |
# asymmetry: get ident after insert |
728 |
# TODO: |
729 |
# - just do this if it is an IdentAuthority |
730 |
# - use IdentProvider metadata here |
731 |
#print Dumper($self->{meta}->{$descent}); |
732 |
my $oid = $self->{meta}->{$descent}->{storage}->id($object); |
733 |
#print "oid: $oid", "\n"; |
734 |
$self->{node}->{$descent}->{ident} = $oid; |
735 |
|
736 |
|
737 |
} elsif (lc $action eq 'update') { |
738 |
|
739 |
# get fresh object from orm first |
740 |
$object = $self->{meta}->{$descent}->{storage}->load($self->{node}->{$descent}->{ident}); |
741 |
|
742 |
#print Dumper($self->{node}); |
743 |
|
744 |
# mix in values |
745 |
#print Dumper($object); |
746 |
hash2object($object, $map); |
747 |
#print Dumper($object); |
748 |
#exit; |
749 |
$self->{meta}->{$descent}->{storage}->update($object); |
750 |
} |
751 |
|
752 |
my $error = 0; |
753 |
|
754 |
# handle new style callbacks - this is a HACK - do this without an eval! |
755 |
#print Dumper($map); |
756 |
#print "cb: ", Dumper($self->{meta}->{$descent}->{Callback}); |
757 |
#print Dumper($map_callbacks); |
758 |
foreach my $node (keys %{$map_callbacks->{write}}) { |
759 |
#print Dumper($node); |
760 |
my $perl_callback = $self->{meta}->{$descent}->{node} . '::' . $node . '_write'; |
761 |
my $evalstring = $perl_callback . '( { object => $object, value => $map_callbacks->{write}->{$node}, storage => $self->{meta}->{$descent}->{storage} } );'; |
762 |
#print $evalstring, "\n"; exit; |
763 |
eval($evalstring); |
764 |
if ($@) { |
765 |
$error = 1; |
766 |
print $@, "\n"; |
767 |
} |
768 |
|
769 |
#print "after eval", "\n"; |
770 |
|
771 |
if (!$error) { |
772 |
# re-update@orm |
773 |
$self->{meta}->{$descent}->{storage}->update($object); |
774 |
} |
775 |
} |
776 |
|
777 |
# handle errors |
778 |
if ($error) { |
779 |
#print "error", "\n"; |
780 |
=pod |
781 |
my $sqlHandle; |
782 |
#if ($self->{args}->{debug}) { print "sql-error with statement: $sql_main", "\n"; } |
783 |
$self->{node}->{status}->{error} = { |
784 |
statement => $sql_main, |
785 |
state => $sqlHandle->state, |
786 |
err => $sqlHandle->err, |
787 |
errstr => $sqlHandle->errstr, |
788 |
}; |
789 |
=cut |
790 |
# rollback.... |
791 |
#print "rollback", "\n"; |
792 |
$self->{meta}->{$descent}->{storage}->erase($object); |
793 |
#print "after rollback", "\n"; |
794 |
} else { |
795 |
$self->{node}->{status}->{ok} = 1; |
796 |
} |
797 |
|
798 |
|
799 |
} |
800 |
|
801 |
} |
802 |
|
803 |
sub _doTransferToTarget { |
804 |
my $self = shift; |
805 |
my $action = shift; |
806 |
$self->_modifyNode('target', $action, $self->{node}->{map}); |
807 |
} |
808 |
|
809 |
sub _doModifySource_IdentChecksum { |
810 |
my $self = shift; |
811 |
my $ident_new = shift; |
812 |
# this changes an old node to a new one including ident and checksum |
813 |
# TODO: |
814 |
# - eventually introduce an external resource to store this data to |
815 |
# - we won't have to "re"-modify the source node here |
816 |
my $map = { |
817 |
$self->{meta}->{source}->{IdentProvider}->{arg} => $ident_new, |
818 |
cs => $self->{node}->{target}->{checksum}, |
819 |
}; |
820 |
|
821 |
#print Dumper($map); |
822 |
#print Dumper($self->{node}); |
823 |
#exit; |
824 |
|
825 |
$self->_modifyNode('source', 'update', $map); |
826 |
} |
827 |
|
828 |
|
829 |
|
830 |
sub _prepareNode_MetaProperties { |
831 |
my $self = shift; |
832 |
my $descent = shift; |
833 |
|
834 |
$logger->info( __PACKAGE__ . "->_prepareNode_MetaProperties( descent $descent )" ); |
835 |
|
836 |
# TODO: this should (better) be: "my $firstnode = $self->_getFirstNode($descent);" |
837 |
my $list = $self->_getNodeList($descent); |
838 |
|
839 |
# get first node |
840 |
my $firstnode = $list->[0]; |
841 |
|
842 |
# check if node contains meta properties/nodes |
843 |
# TODO: "cs" is hardcoded here! |
844 |
my @required = ( $self->{meta}->{$descent}->{IdentProvider}->{arg}, 'cs' ); |
845 |
my @found = keys %$firstnode; |
846 |
#my @diff = getDifference(\@found, \@required); |
847 |
my $diff = getDifference(\@required, \@found); |
848 |
#print Dumper(@found); |
849 |
#print Dumper(@required); |
850 |
#print Dumper(@diff); |
851 |
#if (!$#diff || $#diff == -1) { |
852 |
if (isEmpty($diff)) { |
853 |
$logger->warning( __PACKAGE__ . "->_prepareNode_MetaProperties: node is lacking meta properties - will try to alter..." ); |
854 |
foreach (@required) { |
855 |
my $sql = "ALTER TABLE $self->{meta}->{$descent}->{node} ADD COLUMN $_"; |
856 |
#print "sql: $sql", "\n"; |
857 |
my $res = $self->{meta}->{$descent}->{storage}->sendCommand($sql); |
858 |
#print Dumper($res->getStatus()); |
859 |
} |
860 |
} |
861 |
|
862 |
} |
863 |
|
864 |
sub _prepareNode_DummyIdent { |
865 |
my $self = shift; |
866 |
my $descent = shift; |
867 |
|
868 |
$logger->info( __PACKAGE__ . "->_prepareNode_DummyIdent( descent $descent )" ); |
869 |
|
870 |
my $list = $self->_getNodeList($descent); |
871 |
#print Dumper($list); |
872 |
my $i = 0; |
873 |
my $ident_base = 5678983; |
874 |
my $ident_appendix = '0001'; |
875 |
foreach my $node (@$list) { |
876 |
my $ident_dummy = $i + $ident_base; |
877 |
$ident_dummy .= $ident_appendix; |
878 |
my $map = { |
879 |
$self->{meta}->{$descent}->{IdentProvider}->{arg} => $ident_dummy, |
880 |
cs => undef, |
881 |
}; |
882 |
|
883 |
# diff lists and ... |
884 |
my $diff = getDifference([keys %$node], [keys %$map]); |
885 |
next if $#{$diff} == -1; |
886 |
|
887 |
# ... build criteria including all columns |
888 |
my @crits; |
889 |
foreach my $property (@$diff) { |
890 |
next if !$property; |
891 |
my $value = $node->{$property}; |
892 |
next if !$value; |
893 |
push @crits, "$property='" . quotesql($value) . "'"; |
894 |
} |
895 |
my $crit = join ' AND ', @crits; |
896 |
print "p" if $self->{verbose}; |
897 |
|
898 |
#print Dumper($map); |
899 |
#print Dumper($crit); |
900 |
|
901 |
$self->_modifyNode($descent, 'update', $map, $crit); |
902 |
$i++; |
903 |
} |
904 |
|
905 |
print "\n" if $self->{verbose}; |
906 |
|
907 |
if (!$i) { |
908 |
$logger->warning( __PACKAGE__ . "->_prepareNode_DummyIdent: no nodes touched" ); |
909 |
} |
910 |
|
911 |
} |
912 |
|
913 |
# TODO: handle this in an abstract way (wipe out use of 'source' and/or 'target' inside core) |
914 |
sub _otherSide { |
915 |
my $self = shift; |
916 |
my $descent = shift; |
917 |
return 'source' if $descent eq 'target'; |
918 |
return 'target' if $descent eq 'source'; |
919 |
return ''; |
920 |
} |
921 |
|
922 |
sub _erase_all { |
923 |
my $self = shift; |
924 |
my $descent = shift; |
925 |
#my $node = shift; |
926 |
my $node = $self->{meta}->{$descent}->{node}; |
927 |
$self->{meta}->{$descent}->{storage}->eraseAll($node); |
928 |
} |
929 |
|
930 |
1; |