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################################################ |
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# |
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# $Id: Container.pm,v 1.9 2003/03/27 15:31:08 joko Exp $ |
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# |
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# $Log: Container.pm,v $ |
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# Revision 1.9 2003/03/27 15:31:08 joko |
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# fixes to modules regarding new namespace(s) below Data::Mungle::* |
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# |
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# Revision 1.8 2003/02/18 19:19:47 joko |
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# + modified locator handling |
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# |
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# Revision 1.7 2003/01/30 22:21:52 joko |
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# + changed 'connect'-behaviour back to old state |
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# + renamed log-output (now using 'initializing' instead of 'booting' - corresponding to 'initStorage') |
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# |
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# Revision 1.6 2003/01/30 21:44:00 joko |
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# + temporary fix: (FIXME) now connecting to storage on storagehandle-instantiation |
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# |
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# Revision 1.5 2003/01/19 02:39:57 joko |
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# + moved 'deep_copy' from module 'libp' to module 'Data.Transform.Deep' |
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# + preserved order for hashes '$self->{config}' and '$self->{locator}' by using Tie::IxHash |
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# |
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# Revision 1.4 2002/12/04 07:38:07 jonen |
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# + deep copy |
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# |
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# Revision 1.3 2002/12/01 22:18:28 joko |
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# - no interactive implicit deploy |
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# + only test integrity if storage available |
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# |
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# Revision 1.2 2002/12/01 07:08:35 joko |
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# + needs to "use Data::Storage;" |
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# |
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# Revision 1.1 2002/11/29 04:54:54 joko |
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# + initial check-in |
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# |
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# Revision 1.1 2002/11/17 06:20:41 joko |
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# + initial check in |
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# |
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# |
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################################################ |
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|
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|
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package Data::Storage::Container; |
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|
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use strict; |
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use warnings; |
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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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|
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - main |
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use Tie::IxHash; |
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use Data::Dumper; |
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|
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use Data::Storage; |
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use Data::Storage::Locator; |
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use Data::Mungle::Transform::Deep qw( deep_copy ); |
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use Data::Mungle::Compare::Struct qw( isEmpty ); |
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|
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sub new { |
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my $invocant = shift; |
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my $class = ref($invocant) || $invocant; |
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|
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# get constructor arguments |
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my @args = (); |
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@_ && (@args = @_); |
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$logger->debug( __PACKAGE__ . "->new( @args )" ); |
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|
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my $self = { @_ }; |
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bless $self, $class; |
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|
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# preserve order of configuration variables |
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#$self->{config} = {}; |
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tie %{$self->{config}}, 'Tie::IxHash'; |
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tie %{$self->{locator}}, 'Tie::IxHash'; |
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|
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return $self; |
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} |
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|
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sub addConfig { |
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my $self = shift; |
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my $name = shift; |
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my $config = shift; |
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$self->{config}->{$name} = $config; |
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} |
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|
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sub addConfigByDsn { |
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my $self = shift; |
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my $name = shift; |
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my $dsn = shift; |
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|
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# HACK: assume DBI as default type for now |
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# TODO: guess type from dsn |
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my $type = "DBI"; |
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|
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$self->addConfig($name, { type => $type, dsn => $dsn }); |
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} |
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|
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sub addStorage { |
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my $self = shift; |
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my $name = shift; |
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my $storage = shift; |
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$self->{storage}->{$name} = $storage; |
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} |
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|
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sub existsStorage { |
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my $self = shift; |
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my $name = shift; |
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return exists $self->{storage}->{$name}; |
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} |
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|
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sub initLocator { |
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my $self = shift; |
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my $name = shift; |
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my $db_config = $self->{config}->{$name}; |
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$db_config ||= {}; |
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|
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$logger->debug( __PACKAGE__ . "->initLocator( name='$name' )" ); |
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|
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my $cfg_locator = {}; |
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|
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# set default settings, if any |
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my $default = deep_copy($self->{config}->{_default}); |
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foreach (keys %$default) { |
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$cfg_locator->{$_} = $default->{$_}; |
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} |
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|
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# merge in specific settings |
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my $specific = deep_copy($db_config); |
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foreach (keys %$specific) { |
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$cfg_locator->{$_} = $specific->{$_}; |
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} |
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|
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# HACK: transfer dsn from main to dbi settings |
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$cfg_locator->{dbi}->{dsn} = $cfg_locator->{dsn} if $cfg_locator->{dsn}; |
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|
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# HACK: set classnames empty if none given from config |
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$cfg_locator->{classnames} = [] if !$cfg_locator->{classnames}; |
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|
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# HACK: set errorhandler if dbi settings are present |
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$cfg_locator->{dbi}->{HandleError} = \&_dbErrorHandler if $cfg_locator->{dbi}; |
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|
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# trace |
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#print "locator:", "\n"; |
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#print Dumper($cfg_locator); |
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|
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# check locator metadata |
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if (isEmpty($cfg_locator)) { |
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$logger->warning( __PACKAGE__ . "->initLocator( name='$name' ): Metadata was empty. Please check configuration." ); |
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return; |
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} |
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|
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# name it |
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$cfg_locator->{name} = $name; |
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|
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# create new locator object |
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$self->{locator}->{$name} = Data::Storage::Locator->new( $cfg_locator ); |
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|
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} |
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|
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sub initLocators { |
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my $self = shift; |
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foreach (keys %{$self->{config}}) { |
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#print $_, "\n"; |
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$self->initLocator($_, $self->{config}->{$_}) if !/^_/; |
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} |
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#print "locs: ", Dumper($self->{locator}); |
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} |
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|
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sub getLocator { |
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my $self = shift; |
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my $name = shift; |
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return $self->{locator}->{$name}; |
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} |
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|
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sub initStorage { |
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my $self = shift; |
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my $name = shift; |
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|
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return if $self->existsStorage($name); |
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|
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my $locator = $self->getLocator($name); |
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$logger->info( __PACKAGE__ . " is initializing storage declared by locator \"$name\"" ); |
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|
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my $storage = Data::Storage->new($locator); |
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|
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# TODO: do below (after 'testAvailability' and 'testIntegrity') again!!! |
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#$storage->connect(); |
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|
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my $log_prefix = __PACKAGE__ . "->initStorage: "; |
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$log_prefix .= "dsn=\"$self->{locator}->{$name}->{dsn}\"" if $self->{locator}->{$name}->{dsn}; |
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|
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# should we test availability of the storage before using it? |
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if ($locator->{test_availability}) { |
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$locator->{status}->{availability} = $storage->testAvailability(); |
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if ( !$storage->testAvailability() ) { |
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$logger->error( "$log_prefix: testAvailability failed" ); |
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} |
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} |
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|
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# should we test integrity of the storage before using it? |
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if ($locator->{status}->{availability} && $locator->{test_integrity}) { |
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#return unless $storage->testIntegrity(); |
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$locator->{status}->{integrity} = $storage->testIntegrity(); |
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# actions if integrity fails |
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if (!$locator->{status}->{integrity}) { |
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$logger->error( "$log_prefix: testIntegrity failed" ); |
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} |
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} |
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|
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# try to connect... |
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# TODO: |
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# don't connect right here, do an implicit connect on (later) usage |
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# maybe set ->{meta}->{connectmethod} = "connect" here |
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#return unless $storage->connect(); |
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$storage->connect() if $locator->{status}->{integrity}; |
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|
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# should we check emptyness? |
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if ($locator->{status}->{availability} && $locator->{test_emptyness}) { |
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#print "test empty", "\n"; |
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if ( !@{$storage->getChildNodes()} ) { |
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$locator->{status}->{empty} = 1; |
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$logger->warning( "$log_prefix: Storage is empty."); |
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#return; |
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} |
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} |
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|
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# expand logging? |
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if ( $locator->{status}->{integrity} && $locator->{logger} ) { |
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# expand logging (to Tangram-Database) |
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# TODO: |
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# - move configuration data from this code to db_config somehow |
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# - do complete handling of this stuff in Data::Storage::* also |
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# - just leave a simple on/off-trigger here and/or |
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# - make it optionally configurable via e.g. get/set-methods |
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# to satisfy "manual"-mode instead of "config"-mode |
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# - (re-)add hierarchical logging (each event may have a parent) |
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no strict; |
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my $creator = sub { return new SystemEvent; }; |
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use strict; |
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$storage->addLogDispatchHandler("Tangram11", "Log::Dispatch::Tangram", $logger, $creator); |
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#$storage_left->addLogDispatchHandler("Tangram11", "Log::Dispatch::Tangram", $logger); |
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} |
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|
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#$self->{storage}->{$name} = $storage; |
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#print "add storage: $name", "\n"; |
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$self->addStorage($name, $storage); |
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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 initStorages { |
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my $self = shift; |
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foreach (keys %{$self->{locator}}) { |
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#print $_, "\n"; |
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$self->initStorage($_); |
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} |
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} |
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|
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sub _dbErrorHandler { |
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my $message_db = shift; |
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# get logger instance |
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#my $logger = Log::Dispatch::Config->instance; |
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#$logger->log(level => 'error', message => "Tangram DBI-Error: $message"); |
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my $message_log = "DBI-Error: $message_db"; |
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print STDERR $message_log, "\n"; |
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#$logger->error( $message_log ); |
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#$logger->log_to( name => 'file', level => 'error', message => $message_log); |
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$logger->log_to( name => 'file', level => 'warning', message => $message_log); |
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return 1; |
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} |
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|
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1; |
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__END__ |
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