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package Frey::Storage; |
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use Moose::Role; |
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|
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with 'Frey::Path'; |
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|
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#use YAML::Syck; # XXX doesn't play nice with Continuity |
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use YAML qw//; |
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use File::Slurp qw//; |
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use Storable qw//; |
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use Carp qw/croak carp/; |
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|
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=head2 store |
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|
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$o->store( 'filename.yml', $data ); |
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|
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=cut |
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|
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has 'storage_timestamp' => ( |
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is => 'rw', |
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isa => 'HashRef[Int]', |
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default => sub { {} }, |
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); |
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|
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sub store { |
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my $self = shift; |
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my ( $filename, $data ) = @_; |
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$self->mkbasepath( $filename ); |
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if ( $filename =~ m{\.ya?ml$}i ) { |
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YAML::DumpFile( $filename, $data ); |
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} elsif ( $filename =~ m{\.sto?r?a?b?l?e?$} ) { |
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Storable::store $data => $filename; |
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} else { |
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croak "without extension we can save only scalar data" if ref($data); |
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File::Slurp::write_file( $filename, $data ); |
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} |
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carp "created $filename ", -s $filename; |
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} |
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|
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=head2 load |
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|
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$data = $o->load( 'filename.yml' ); |
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|
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=cut |
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|
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sub load { |
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my ( $self, $filename ) = @_; |
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return if ! -e $filename; |
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my $data; |
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if ( $filename =~ m{\.ya?ml}i ) { |
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$data = YAML::LoadFile( $filename ); |
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} elsif ( $filename =~ m{\.stor?a?b?l?e?$} ) { |
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$data = Storable::retrieve $filename; |
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} else { |
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$data = File::Slurp::read_file( $filename ); |
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} |
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$self->storage_timestamp->{ $filename } = _path_time( $filename ); |
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return $data; |
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} |
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|
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=head2 reload |
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|
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Reload file if on-disk copy have changed |
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|
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my $new_data = $o->reload( 'filename.yml' ); |
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|
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=cut |
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|
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sub _path_time { |
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(stat( $_[0] ))[9]; # mtime |
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} |
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|
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sub reload { |
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my ( $self, $filename ) = @_; |
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return if defined $self->storage_timestamp->{ $filename } && $self->storage_timestamp->{ $filename } == _path_time( $filename ); |
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warn "# reload $filename" if $self->debug; |
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$self->load( $filename ); |
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} |
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|
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no Moose::Role; |
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|
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1; |