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## $Id: API.pm,v 1.1 2003/01/19 01:23:04 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: API.pm,v $ |
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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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1.1 |
## ---------------------------------------------------------------------------------------- |
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1.2 |
package Data::Transfer::Sync::API; |
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1.1 |
use strict; |
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use warnings; |
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|
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1.1 |
use mixin::with qw( Data::Transfer::Sync ); |
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|
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - main |
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use Data::Dumper; |
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1.1 |
use Data::Compare::Struct qw( getDifference isEmpty ); |
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use Data::Transform::Deep qw( merge ); |
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|
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1.1 |
# get logger instance |
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my $logger = Log::Dispatch::Config->instance; |
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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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1.2 |
|
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1.1 |
sub checkOptions { |
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my $self = shift; |
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my $opts = shift; |
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my $result = 1; |
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# check - do we have a target node? |
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if (!$opts->{target_node}) { |
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$logger->warning( __PACKAGE__ . "->checkOptions: Error while resolving resource metadata - no 'target node' could be determined."); |
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$result = 0; |
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} |
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# check - do we have a mapping? |
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if (!$opts->{mapping} && !$opts->{mapping_module}) { |
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$logger->warning( __PACKAGE__ . "->checkOptions: Error while resolving resource metadata - no 'mapping' could be determined."); |
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$result = 0; |
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} |
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return $result; |
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} |
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|
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1.1 |
sub checkOptionsV2 { |
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my $self = shift; |
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#print Dumper($self->{options}); |
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my $result = 1; |
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# check - do we have a target node? |
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if (!$self->{options}->{target}->{nodeName}) { |
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$logger->warning( __PACKAGE__ . "->checkOptionsV2: No target given - please check metadata declaration."); |
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$result = 0; |
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} |
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# check - do we have a mapping? |
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if (!$self->{options}->{fieldmap}) { |
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$logger->warning( __PACKAGE__ . "->checkOptionsV2: Error while resolving resource metadata - no 'fieldmap' could be determined."); |
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$result = 0; |
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} |
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# TODO: extend! |
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return $result; |
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} |
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sub prepareOptions { |
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my $self = shift; |
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my $opts = shift; |
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#print Dumper($opts); |
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#exit; |
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$opts->{mode} ||= ''; |
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$opts->{erase} ||= 0; |
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$opts->{prepare} ||= 0; |
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#$opts->{import} ||= 0; |
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if (!$opts->{source_node}) { |
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$logger->error( __PACKAGE__ . "->prepareOptions failed: Please specify source-node!"); |
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return; |
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} |
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$logger->notice( __PACKAGE__ . "->prepareOptions( source_node $opts->{source_node} mode $opts->{mode} erase $opts->{erase} prepare $opts->{prepare} )"); |
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#if (!$opts->{mapping} || !$opts->{mapping_module}) { |
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if (!$opts->{mapping}) { |
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$logger->warning( __PACKAGE__ . "->prepareOptions: No mapping supplied - please check key 'mappings' in global configuration or specify additional argument '--mapping'."); |
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#return; |
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} |
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$opts->{mapping_module} ||= $opts->{mapping}; |
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my $evstring = "use $opts->{mapping_module};"; |
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eval($evstring); |
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if ($@) { |
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$logger->warning( __PACKAGE__ . "->prepareOptions: error while trying to access mapping - $@"); |
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return; |
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} |
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# resolve mapping metadata (returned from sub) |
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my $mapObject = $opts->{mapping_module}->new(); |
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#print Dumper($map); |
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my $source_node_name = $opts->{source_node}; |
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# check if mapping for certain node is contained in mapping object |
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if (!$mapObject->can($source_node_name)) { |
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$logger->warning( __PACKAGE__ . "->prepareOptions: Can't access mapping for node \"$source_node_name\" - please check $opts->{mapping_module}."); |
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return; |
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} |
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my $map = $mapObject->$source_node_name; |
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#print Dumper($map); |
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# check here if "target" is actually a CODEref - in this case: resolve it - deprecated!!! ??? |
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if (ref $map->{target} eq 'CODE') { |
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$map->{target} = $map->{target}->($source_node_name); |
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} |
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# resolve expressions (on nodename-level) here |
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if ($map->{target} =~ m/^(code|expr):(.+?)$/) { |
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my $target_dynamic_type = $1; |
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my $target_dynamic_expression = $2; |
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if (lc $target_dynamic_type eq 'code') { |
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# $map->{target} = $mapObject->$target_dynamic_expression($map); |
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} |
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} |
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# remove asymmetries from $map (patch keys) |
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$map->{source_node} = $map->{source}; delete $map->{source}; |
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$map->{target_node} = $map->{target}; delete $map->{target}; |
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$map->{mapping} = $map->{details}; delete $map->{details}; |
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$map->{direction} = $map->{mode}; delete $map->{mode}; |
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# defaults (mostly for backward-compatibility) |
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$map->{source_node} ||= $source_node_name; |
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$map->{source_ident} ||= 'storage_method:id'; |
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$map->{target_ident} ||= 'property:oid'; |
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$map->{direction} ||= $opts->{mode}; # | PUSH | PULL | FULL |
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$map->{method} ||= 'checksum'; # | timestamp |
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$map->{source_exclude} ||= [qw( cs )]; |
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# merge map to opts |
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map { $opts->{$_} = $map->{$_}; } keys %$map; |
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#print Dumper($opts); |
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# TODO: move this to checkOptions... |
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# check - do we have a target? |
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if (!$opts->{target_node}) { |
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$logger->warning( __PACKAGE__ . "->prepareOptions: No target given - please check metadata declaration."); |
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return; |
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} |
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#return $opts; |
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return 1; |
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} |
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1.2 |
|
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1.1 |
sub prepareOptionsV2 { |
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my $self = shift; |
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my $opts = shift; |
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# patch options |
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$opts->{process}->{mode} ||= ''; |
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$opts->{process}->{prepare} ||= 0; |
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$opts->{process}->{erase} ||= 0; |
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# pre-check options |
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if (!$self->_preCheckOptions($opts)) { |
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$logger->error( __PACKAGE__ . "->prepareOptionsV2: _preCheckOptions failed."); |
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return; |
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} |
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# inform user about option preparation |
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1.2 |
$logger->notice( __PACKAGE__ . "->prepareOptionsV2( source.node='$opts->{source}->{nodeName}', target.node='$opts->{target}->{nodeName}', mode='$opts->{process}->{mode}', e='$opts->{process}->{erase}', p='$opts->{process}->{prepare}' )"); |
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1.1 |
|
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# try to load mapping-metadata-container |
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#my $mapObject = getNewPerlObjectByPkgName($opts->{map}->{moduleName}); |
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my $mapObject = DesignPattern::Object->fromPackage($opts->{map}->{moduleName}); |
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# try to resolve map from metadata-container |
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# type of the item/node |
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my $source_nodeType = $opts->{source}->{nodeType}; |
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# check if mapping for certain node is contained in mapping object |
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if (!$mapObject->can($source_nodeType)) { |
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$logger->warning( __PACKAGE__ . "->prepareOptionsV2: Can't access mapping for source-type=\"$source_nodeType\" - please check \"$opts->{map}->{moduleName}\"."); |
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return; |
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} |
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# get map |
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my $map = $mapObject->$source_nodeType; |
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#print Dumper($map); |
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=pod |
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# check here if "target" is actually a CODEref - in this case: resolve it - deprecated!!! ??? |
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if (ref $map->{target}->{address} eq 'CODE') { |
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$map->{target}->{address} = $map->{target}->{address}->($source_nodeType); |
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} |
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# resolve expressions (on nodename-level) here |
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if ($map->{target}->{address} =~ m/^(code|expr):(.+?)$/) { |
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my $target_dynamic_type = $1; |
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my $target_dynamic_expression = $2; |
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if (lc $target_dynamic_type eq 'code') { |
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$map->{target} = $mapObject->$target_dynamic_expression($map); |
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} |
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} |
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=cut |
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#map { $opts->{$_} = $map->{$_}; } keys %$map; |
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my $opts_merged = merge( $opts, $map ); |
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$self->{options} = $opts_merged; |
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$self->{state}->{options_ready} = 1; |
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return 1; |
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} |
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joko |
1.2 |
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joko |
1.1 |
sub configure { |
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my $self = shift; |
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my @args = @_; |
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if (!isEmpty(\@args)) { |
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my %properties = @_; |
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# merge args to properties |
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map { $self->{$_} = $properties{$_}; } keys %properties; |
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$self->_init(); |
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$self->_initV1(); |
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} else { |
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#print "no args!", "\n"; |
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} |
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#print Dumper($self); |
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$self->{state}->{configured} = 1; |
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return 1; |
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} |
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sub configureV2 { |
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my $self = shift; |
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my @args = @_; |
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if (!isEmpty(\@args)) { |
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my %properties = @_; |
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# merge args to properties |
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#map { $self->{$_} = $properties{$_}; } keys %properties; |
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$self->{options} = merge($self->{options}, \%properties); |
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$self->_init(); |
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#$self->_initV1(); |
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} else { |
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#print "no args!", "\n"; |
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} |
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#print Dumper($self); |
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$self->{state}->{configured} = 1; |
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return 1; |
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} |
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joko |
1.2 |
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sub _getDirectedArrow { |
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my $self = shift; |
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my $mode = shift; |
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$mode ||= ''; |
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if (lc $mode eq 'push') { |
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return '->'; |
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} elsif (lc $mode eq 'pull') { |
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return '<-'; |
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} elsif (lc $mode eq 'full') { |
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return '<->'; |
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} else { |
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return ''; |
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} |
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} |
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joko |
1.1 |
# TODO: some feature to show off the progress of synchronization (cur/max * 100) |
299 |
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sub syncNodes { |
300 |
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301 |
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my $self = shift; |
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my $args = shift; |
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304 |
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if (!$self->{state}->{configured}) { |
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$logger->critical( __PACKAGE__ . "->syncNodes: Synchronization object is not configured/initialized correctly." ); |
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return; |
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} |
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309 |
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# remember arguments through the whole processing |
310 |
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$self->{args} = $args; |
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$logger->debug( __PACKAGE__ . "->syncNodes: starting" ); |
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# hash to hold and/or fill in metadata required for the processing |
315 |
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$self->{meta} = {}; |
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# hash to sum up results |
318 |
joko |
1.2 |
# TODO: re-implement! (sync-statistics???) |
319 |
joko |
1.1 |
|
320 |
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# detect synchronization method to determine which optical symbol (directed arrow) to use |
321 |
joko |
1.2 |
my $mode = $self->{args}->{mode}; # V1 |
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$mode ||= $self->{options}->{process}->{mode}; # V2 |
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my $direction_arrow = $self->_getDirectedArrow($mode); |
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if (!$self->{options}->{metadata}->{version} || $self->{options}->{metadata}->{version} < 0.2) { |
326 |
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$self->_buildMetadataV1(); |
327 |
joko |
1.1 |
} else { |
328 |
joko |
1.2 |
$self->_buildMetadataV2(); |
329 |
joko |
1.1 |
} |
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331 |
joko |
1.2 |
$logger->info( __PACKAGE__ . "->syncNodes: source=$self->{meta}->{source}->{dbKey}/$self->{meta}->{source}->{nodeName} [$self->{meta}->{source}->{nodeType}] $direction_arrow target=$self->{meta}->{target}->{dbKey}/$self->{meta}->{target}->{nodeName} [$self->{meta}->{target}->{nodeType}]" ); |
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joko |
1.1 |
|
333 |
joko |
1.2 |
return if !$self->_buildFieldmappingV1(); |
334 |
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return if !$self->_handleNodeContainers(); |
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return if !$self->_prepareSync(); |
336 |
joko |
1.1 |
|
337 |
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#print Dumper($self); |
338 |
joko |
1.2 |
#print Dumper($self->{args}); |
339 |
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#print Dumper($self->{options}); |
340 |
joko |
1.1 |
#print Dumper($self->{meta}); |
341 |
joko |
1.2 |
#print Dumper($self->{metadata}); |
342 |
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343 |
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$self->_syncNodes(); |
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} |
346 |
joko |
1.1 |
|
347 |
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348 |
joko |
1.2 |
sub _handleNodeContainers { |
349 |
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my $self = shift; |
350 |
joko |
1.1 |
|
351 |
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# check partners/nodes: does partner exist / is node available? |
352 |
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foreach my $partner (keys %{$self->{meta}}) { |
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# 1. check partners & storages |
355 |
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if (!$self->{meta}->{$partner}) { |
356 |
joko |
1.2 |
$logger->critical( __PACKAGE__ . "->_handleNodeContainers: Could not find partner '$partner' in configuration metadata." ); |
357 |
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next; |
358 |
joko |
1.1 |
} |
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360 |
joko |
1.2 |
my $dbkey = $self->{meta}->{$partner}->{dbKey}; |
361 |
joko |
1.1 |
|
362 |
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#print Dumper($self->{meta}); |
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if (!$self->{meta}->{$partner}->{storage}) { |
365 |
joko |
1.2 |
$logger->critical( __PACKAGE__ . "->_handleNodeContainers: Could not access storage ( partner='$partner', dbKey='$dbkey' ) - configuration-error?" ); |
366 |
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next; |
367 |
joko |
1.1 |
} |
368 |
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369 |
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# TODO: |
370 |
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# 2. check if partners (and nodes?) are actually available.... |
371 |
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# eventually pre-check mode of access-attempt (read/write) here to provide an "early-croak" if possible |
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|
|
|
373 |
|
|
# print Dumper($self->{meta}->{$partner}->{storage}->{locator}); |
374 |
|
|
|
375 |
|
|
my $dbType = $self->{meta}->{$partner}->{storage}->{locator}->{type}; |
376 |
|
|
#print "dbType: $dbType", "\n"; |
377 |
|
|
|
378 |
|
|
# 3. check nodes |
379 |
|
|
next if $dbType eq 'DBI'; # HACK for DBD::CSV - re-enable for others |
380 |
|
|
# get node-name |
381 |
|
|
# print Dumper($self); |
382 |
|
|
#print Dumper($self->{meta}->{$partner}); |
383 |
|
|
#print "ΓΆΓΆ", $self->{meta}->{$partner}->{node}, "\n"; |
384 |
joko |
1.2 |
my $nodename = $self->{meta}->{$partner}->{node}; # V1 |
385 |
|
|
$nodename ||= $self->{meta}->{$partner}->{nodeName}; # V2 |
386 |
joko |
1.1 |
# check if nodename is actually a CODEref, execute it to get a mapped/filtered target-nodename |
387 |
|
|
|
388 |
|
|
#print "nodename: $nodename", "\n"; |
389 |
|
|
|
390 |
joko |
1.2 |
$logger->debug( __PACKAGE__ . "->_handleNodeContainers: Accessing dbType=\"$dbType\", nodename=\"$nodename\"." ); |
391 |
joko |
1.1 |
|
392 |
|
|
=pod |
393 |
|
|
#print "----", ref $nodename, "\n"; |
394 |
|
|
if ($nodename =~ m/CODE/) { |
395 |
|
|
print Dumper($self); |
396 |
|
|
#exit; |
397 |
|
|
$nodename = $nodename->($nodename); |
398 |
|
|
} |
399 |
|
|
=cut |
400 |
joko |
1.2 |
|
401 |
|
|
#print Dumper($self); |
402 |
|
|
|
403 |
|
|
#print "partner: $partner - nodename: $nodename", "\n"; |
404 |
joko |
1.1 |
|
405 |
|
|
if (!$self->{meta}->{$partner}->{storage}->existsChildNode($nodename)) { |
406 |
joko |
1.2 |
#print "ex", "\n"; |
407 |
|
|
#exit; |
408 |
|
|
|
409 |
|
|
if ($partner eq 'target' && $self->{options}->{target}->{autocreateFolders}) { |
410 |
|
|
if (!$self->{meta}->{$partner}->{storage}->createChildNode($nodename)) { |
411 |
|
|
$logger->critical( __PACKAGE__ . "->_handleNodeContainers: Could not create node '$self->{meta}->{$partner}->{nodeName}\@$self->{meta}->{$partner}->{dbKey}' [$self->{meta}->{$partner}->{nodeType}]." ); |
412 |
|
|
next; |
413 |
|
|
} |
414 |
|
|
} else { |
415 |
|
|
$logger->critical( __PACKAGE__ . "->_handleNodeContainers: Could not reach node \"$nodename\" at partner \"$partner\"." ); |
416 |
|
|
next; |
417 |
|
|
} |
418 |
joko |
1.1 |
} |
419 |
|
|
|
420 |
|
|
} |
421 |
joko |
1.2 |
|
422 |
|
|
return 1; |
423 |
|
|
|
424 |
|
|
} |
425 |
|
|
|
426 |
|
|
|
427 |
|
|
sub _prepareSync { |
428 |
|
|
my $self = shift; |
429 |
joko |
1.1 |
|
430 |
|
|
# TODO: |
431 |
|
|
# + if action == PUSH: start processing |
432 |
|
|
# -+ if action == PULL: swap metadata and start processing |
433 |
|
|
# - if action == FULL: start processing, then swap metadata and (re-)start processing |
434 |
|
|
|
435 |
|
|
# manipulate metainfo according to direction of synchronization |
436 |
|
|
if (lc $self->{args}->{direction} eq 'push') { |
437 |
|
|
# just do it ... |
438 |
|
|
} elsif (lc $self->{args}->{direction} eq 'pull') { |
439 |
|
|
#print "=======SWAP", "\n"; |
440 |
|
|
# swap |
441 |
|
|
($self->{meta}->{source}, $self->{meta}->{target}) = |
442 |
|
|
($self->{meta}->{target}, $self->{meta}->{source}); |
443 |
|
|
} elsif (lc $self->{args}->{direction} eq 'full') { |
444 |
|
|
} else { |
445 |
|
|
} |
446 |
|
|
|
447 |
|
|
# import flag means: prepare the source node to be syncable |
448 |
|
|
# this is useful if there are e.g. no "ident" or "checksum" columns yet inside a DBI like (row-based) storage |
449 |
|
|
if ($self->{args}->{prepare}) { |
450 |
|
|
$self->_prepareNode_MetaProperties('source'); |
451 |
|
|
$self->_prepareNode_DummyIdent('source'); |
452 |
|
|
#return; |
453 |
|
|
#$self->_erase_all($opts->{source_node}); |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
# erase flag means: erase the target |
457 |
|
|
#if ($opts->{erase}) { |
458 |
|
|
if ($self->{args}->{erase}) { |
459 |
|
|
# TODO: move this method to the scope of the synchronization core and wrap it around different handlers |
460 |
|
|
#print "ERASE", "\n"; |
461 |
|
|
$self->_erase_all('target'); |
462 |
|
|
} |
463 |
joko |
1.2 |
|
464 |
|
|
return 1; |
465 |
joko |
1.1 |
|
466 |
|
|
} |
467 |
|
|
|
468 |
|
|
1; |