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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" |
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if (!$self->{node}->{status}->{new} && !$self->{node}->{status}->{dirty}) { |
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$tc->{in_sync}++; |
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next; |
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} |
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|
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# build map to actually transfer the data from source to target |
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$self->_buildMap(); |
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|
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|
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#print Dumper($self->{node}); exit; |
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|
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#print "attempt", "\n"; |
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|
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# additional (new) checks for feature "write-protection" |
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if ($self->{meta}->{target}->{storage}->{isWriteProtected}) { |
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$tc->{attempt_transfer}++; |
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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}) . ")" ); |
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print "\n" if $self->{verbose}; |
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$tc->{skip}++; |
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next; |
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} |
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|
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# transfer contents of map to target |
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if ($self->{node}->{status}->{new}) { |
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$tc->{attempt_new}++; |
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$self->_doTransferToTarget('insert'); |
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# asymmetry: refetch node from target to re-calculate new ident and checksum (TODO: is IdentAuthority of relevance here?) |
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#print Dumper($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?) |
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$self->{node}->{target}->{ident} = $self->{node}->{map}->{$self->{meta}->{target}->{IdentProvider}->{arg}}; |
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$self->_doTransferToTarget('update'); |
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$self->_readChecksum('target'); |
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} |
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|
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if ($self->{node}->{status}->{ok}) { |
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$tc->{ok}++; |
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print "t" if $self->{verbose}; |
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} |
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|
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if ($self->{node}->{status}->{error}) { |
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$tc->{error}++; |
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push( @{$tc->{error_per_row}}, $self->{node}->{status}->{error} ); |
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print "e" if $self->{verbose}; |
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} |
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|
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# change ident in source (take from target), if transfer was ok and target is an IdentAuthority |
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# this is (for now) called a "retransmit" indicated by a "r"-character when verbosing |
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if ($self->{node}->{status}->{ok} && $self->{meta}->{target}->{storage}->{isIdentAuthority}) { |
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print "r" if $self->{verbose}; |
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#print Dumper($self->{meta}); |
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#print Dumper($self->{node}); |
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#exit; |
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$self->_doModifySource_IdentChecksum($self->{node}->{target}->{ident}); |
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} |
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|
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print ":" if $self->{verbose}; |
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|
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} |
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|
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print "\n" if $self->{verbose}; |
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|
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# build user-message from some stats |
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my $msg = "statistics: $tc"; |
| 354 |
|
| 355 |
if ($tc->{error_per_row}) { |
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$msg .= "\n"; |
| 357 |
$msg .= "errors from \"error_per_row\":" . "\n"; |
| 358 |
$msg .= Dumper($tc->{error_per_row}); |
| 359 |
} |
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|
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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; |
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