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use base 'WebPAC::Common'; |
use base 'WebPAC::Common'; |
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use Storable; |
use Storable; |
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use File::Path; |
use File::Path; |
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use Data::Dumper; |
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=head1 NAME |
=head1 NAME |
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=head1 VERSION |
=head1 VERSION |
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Version 0.04 |
Version 0.05 |
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=cut |
=cut |
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our $VERSION = '0.04'; |
our $VERSION = '0.05'; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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my $db = new WebPAC::Store( |
my $db = new WebPAC::Store( |
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path => '/path/to/cache/ds/', |
path => '/path/to/cache/ds/', |
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database => 'name', |
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read_only => 1, |
read_only => 1, |
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); |
); |
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=head2 load_ds |
=head2 load_ds |
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Retrive from disk one data_structure records using field 000 as key |
Retrive from disk one data_structure records usually using field 000 as key |
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my $ds = $db->load_ds( 42 ); |
my $ds = $db->load_ds( id => 42, database => 'name' ); |
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There is also a more verbose form, similar to C<save_ds> |
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my $ds = $db->load_ds( id => 42 ); |
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This function will also perform basic sanity checking on returned |
This function will also perform basic sanity checking on returned |
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data and disable caching if data is corrupted (or changed since last |
data and disable caching if data is corrupted (or changed since last |
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sub load_ds { |
sub load_ds { |
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my $self = shift; |
my $self = shift; |
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return unless $self->{'path'}; |
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my $log = $self->_get_logger; |
my $log = $self->_get_logger; |
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my $cache_path = $self->{'path'}; |
my $cache_path = $self->{'path'}; |
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my $id = shift; |
if (! $cache_path) { |
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if (lc($id) eq 'id') { |
$log->warn("path not set, ignoring load_ds"); |
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$id = shift; |
return; |
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$log->logconfess("got hash, but without key id") unless (defined($id)); |
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$log->logconfess("got hash, but id isn't number") unless ($id =~ /^\d+$/); |
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} |
} |
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if (! defined($id)) { |
$log->logconfess("arguments for load_ds must be HASH") unless (ref(\@_) eq 'ARRAY' && ($#_ % 2 == 1)); |
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$log->warn("called without id"); |
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return undef; |
my $args = {@_}; |
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} else { |
my $id = $args->{id}; |
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my $cache_file = "$cache_path/$id"; |
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if (-r $cache_file) { |
$log->logconfess("got hash, but without id") unless (defined($id)); |
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my $ds_ref = retrieve($cache_file); |
$log->logconfess("got hash, but id isn't number") unless ($id =~ /^\d+$/); |
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if ($ds_ref) { |
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$log->debug("cache hit: $cache_file"); |
my $database = $args->{database} || $self->{database}; |
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my $ok = 1; |
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# foreach my $f (qw(current_filename headline)) { |
$log->logconfess("can't find database name") unless ($database); |
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# if ($ds_ref->{$f}) { |
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# $self->{$f} = $ds_ref->{$f}; |
my $cache_file = "$cache_path/$database#$id"; |
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# } else { |
$cache_file =~ s#//#/#g; |
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# $ok = 0; |
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# } |
$log->debug("using cache_file $cache_file"); |
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# }; |
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if ($ok && $ds_ref->{'ds'}) { |
if (-r $cache_file) { |
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return $ds_ref->{'ds'}; |
my $ds_ref = retrieve($cache_file); |
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} else { |
if ($ds_ref) { |
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$log->warn("cache entry $cache_file corrupt. Use rm $cache_path/* to re-create it on next run!"); |
$log->debug("cache hit: $cache_file"); |
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undef $self->{'path'}; |
if ($ds_ref->{'ds'}) { |
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} |
return $ds_ref->{'ds'}; |
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} else { |
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$log->warn("cache entry $cache_file corrupt. Use rm $cache_path/* to re-create it on next run!"); |
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undef $self->{'path'}; |
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} |
} |
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} else { |
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#$log->warn("cache entry $cache_file doesn't exist"); |
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return undef; |
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} |
} |
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} else { |
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#$log->warn("cache entry $cache_file doesn't exist"); |
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return undef; |
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} |
} |
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return undef; |
return undef; |
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$db->save_ds( |
$db->save_ds( |
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id => $ds->{000}->[0], |
id => $ds->{000}->[0], |
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database => 'name', |
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ds => $ds, |
ds => $ds, |
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); |
); |
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$log->logconfess("need $f") unless ($arg->{$f}); |
$log->logconfess("need $f") unless ($arg->{$f}); |
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} |
} |
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my $cache_file = $self->{path} . '/' . $arg->{id}; |
my $database = $arg->{database} || $self->{database}; |
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$log->logconfess("can't find database name") unless ($database); |
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my $cache_file = $self->{path} . '/' . $database . '#' . $arg->{id}; |
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$log->debug("creating storable cache file $cache_file"); |
$log->debug("creating storable cache file $cache_file"); |
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