# $Id: State.pm 79 2019-01-30 02:35:31Z stro $
package CPAN::SQLite::State;
use strict;
use warnings;
no warnings qw(redefine);
our $VERSION = '0.217';
use English qw/-no_match_vars/;
use CPAN::SQLite::DBI qw($dbh);
use CPAN::SQLite::DBI::Index;
use CPAN::SQLite::Util qw(has_hash_data print_debug);
use Scalar::Util 'weaken';
my %tbl2obj;
$tbl2obj{$_} = __PACKAGE__ . '::' . $_ for (qw(dists mods auths info));
my %obj2tbl = reverse %tbl2obj;
our $dbh = $CPAN::SQLite::DBI::dbh;
sub new {
my ($class, %args) = @_;
if ($args{setup}) {
die "No state information available under setup";
}
my $index = $args{index};
my @tables = qw(dists mods auths info);
foreach my $table (@tables) {
my $obj = $index->{$table};
die "Please supply a CPAN::SQLite::Index::$table object"
unless ($obj and ref($obj) eq "CPAN::SQLite::Index::$table");
}
my $cdbi = CPAN::SQLite::DBI::Index->new(%args);
my $self = {
index => $index,
obj => {},
cdbi => $cdbi,
reindex => $args{reindex},
};
return bless $self, $class;
}
sub state {
my $self = shift;
unless ($self->create_objs()) {
print_debug("Cannot create objects");
return;
}
unless ($self->state_info()) {
print_debug("Getting state information failed");
return;
}
return 1;
}
sub create_objs {
my $self = shift;
my @tables = qw(dists auths mods info);
foreach my $table (@tables) {
my $obj;
my $pack = $tbl2obj{$table};
my $index = $self->{index}->{$table};
if ($index and ref($index) eq "CPAN::SQLite::Index::$table") {
my $info = $index->{info};
if ($table ne 'info') {
return unless has_hash_data($info);
}
$obj = $pack->new(
info => $info,
cdbi => $self->{cdbi}->{objs}->{$table});
} else {
$obj = $pack->new();
}
$self->{obj}->{$table} = $obj;
}
foreach my $table (@tables) {
my $obj = $self->{obj}->{$table};
foreach (@tables) {
next if ref($obj) eq $tbl2obj{$_};
$obj->{obj}->{$_} = $self->{obj}->{$_};
weaken $obj->{obj}->{$_};
}
}
return 1;
}
sub state_info {
my $self = shift;
my @methods = qw(ids state);
my @tables = qw(dists auths mods);
for my $method (@methods) {
for my $table (@tables) {
my $obj = $self->{obj}->{$table};
unless ($obj->$method()) {
if (my $error = $obj->{error_msg}) {
print_debug("Fatal error from ", ref($obj), ": ", $error, $/);
return;
} else {
my $info = $obj->{info_msg};
print_debug("Info from ", ref($obj), ": ", $info, $/);
}
}
}
}
# Check "info"
if (my $obj = $self->{'obj'}->{'info'}) {
return unless $obj->state;
}
return 1;
}
package CPAN::SQLite::State::auths;
use parent 'CPAN::SQLite::State';
use CPAN::SQLite::Util qw(has_hash_data print_debug);
sub new {
my ($class, %args) = @_;
my $info = $args{info};
die "No author info available" unless has_hash_data($info);
my $cdbi = $args{cdbi};
die "No dbi object available"
unless ($cdbi and ref($cdbi) eq 'CPAN::SQLite::DBI::Index::auths');
my $self = {
info => $info,
insert => {},
update => {},
delete => {},
ids => {},
obj => {},
cdbi => $cdbi,
error_msg => '',
info_msg => '',
};
return bless $self, $class;
}
sub ids {
my $self = shift;
my $cdbi = $self->{cdbi};
$self->{ids} = $cdbi->fetch_ids() or do {
$self->{error_msg} = $cdbi->{error_msg};
return;
};
return 1;
}
sub state {
my $self = shift;
my $auth_ids = $self->{ids};
return unless my $dist_obj = $self->{obj}->{dists};
my $dist_update = $dist_obj->{update};
my $dist_insert = $dist_obj->{insert};
my $dists = $dist_obj->{info};
my ($update, $insert);
if (has_hash_data($dist_insert)) {
foreach my $distname (keys %{$dist_insert}) {
my $cpanid = $dists->{$distname}->{cpanid};
if (my $auth_id = $auth_ids->{$cpanid}) {
$update->{$cpanid} = $auth_id;
} else {
$insert->{$cpanid}++;
}
}
}
if (has_hash_data($dist_update)) {
foreach my $distname (keys %{$dist_update}) {
my $cpanid = $dists->{$distname}->{cpanid};
if (my $auth_id = $auth_ids->{$cpanid}) {
$update->{$cpanid} = $auth_id;
} else {
$insert->{$cpanid}++;
}
}
}
$self->{update} = $update;
$self->{insert} = $insert;
return 1;
}
package CPAN::SQLite::State::dists;
use parent 'CPAN::SQLite::State';
use CPAN::SQLite::Util qw(vcmp has_hash_data print_debug);
sub new {
my ($class, %args) = @_;
my $info = $args{info};
die "No dist info available" unless has_hash_data($info);
my $cdbi = $args{cdbi};
die "No dbi object available"
unless ($cdbi and ref($cdbi) eq 'CPAN::SQLite::DBI::Index::dists');
my $self = {
info => $info,
insert => {},
update => {},
delete => {},
ids => {},
versions => {},
obj => {},
cdbi => $cdbi,
error_msg => '',
info_msg => '',
reindex => undef,
};
return bless $self, $class;
}
sub ids {
my $self = shift;
my $cdbi = $self->{cdbi};
($self->{ids}, $self->{versions}) = $cdbi->fetch_ids() or do {
$self->{error_msg} = $cdbi->{error_msg};
return;
};
return 1;
}
sub state {
my $self = shift;
my $dist_versions = $self->{versions};
my $dists = $self->{info};
my $dist_ids = $self->{ids};
my ($insert, $update, $delete);
my $reindex = $self->{reindex};
if (defined $reindex) {
my @dists = ref($reindex) eq 'ARRAY' ? @$reindex : ($reindex);
foreach my $distname (@dists) {
my $id = $dist_ids->{$distname};
if (not defined $id) {
print_debug(qq{"$distname" does not have an id: reindexing ignored\n});
next;
}
$update->{$distname} = $id;
}
$self->{update} = $update;
return 1;
}
foreach my $distname (keys %$dists) {
if (not defined $dist_versions->{$distname}) {
$insert->{$distname}++;
} elsif (vcmp($dists->{$distname}->{dist_vers}, $dist_versions->{$distname}) > 0) {
$update->{$distname} = $dist_ids->{$distname};
}
}
$self->{update} = $update;
$self->{insert} = $insert;
foreach my $distname (keys %$dist_versions) {
next if $dists->{$distname};
$delete->{$distname} = $dist_ids->{$distname};
print_debug("Will delete $distname\n");
}
$self->{delete} = $delete;
return 1;
}
package CPAN::SQLite::State::mods;
use parent 'CPAN::SQLite::State';
use CPAN::SQLite::Util qw(has_hash_data print_debug);
sub new {
my ($class, %args) = @_;
my $info = $args{info};
die "No module info available" unless has_hash_data($info);
my $cdbi = $args{cdbi};
die "No dbi object available"
unless ($cdbi and ref($cdbi) eq 'CPAN::SQLite::DBI::Index::mods');
my $self = {
info => $info,
insert => {},
update => {},
delete => {},
ids => {},
obj => {},
cdbi => $cdbi,
error_msg => '',
info_msg => '',
};
return bless $self, $class;
}
sub ids {
my $self = shift;
my $cdbi = $self->{cdbi};
$self->{ids} = $cdbi->fetch_ids() or do {
$self->{error_msg} = $cdbi->{error_msg};
return;
};
return 1;
}
sub state {
my $self = shift;
my $mod_ids = $self->{ids};
return unless my $dist_obj = $self->{obj}->{dists};
my $dists = $dist_obj->{info};
my $dist_update = $dist_obj->{update};
my $dist_insert = $dist_obj->{insert};
my ($update, $insert, $delete);
my $cdbi = $self->{cdbi};
if (has_hash_data($dist_insert)) {
foreach my $distname (keys %{$dist_insert}) {
foreach my $module (keys %{ $dists->{$distname}->{modules} }) {
$insert->{$module}++;
}
}
}
if (has_hash_data($dist_update)) {
foreach my $distname (keys %{$dist_update}) {
foreach my $module (keys %{ $dists->{$distname}->{modules} }) {
my $mod_id = $mod_ids->{$module};
if ($mod_id) {
$update->{$module} = $mod_id;
} else {
$insert->{$module}++;
}
}
}
}
if (has_hash_data($dist_update)) {
my $sql = q{SELECT mod_id,mod_name from mods,dists WHERE dists.dist_id = mods.dist_id and dists.dist_id = ?};
my $sth = $dbh->prepare($sql) or do {
$cdbi->db_error();
$self->{error_msg} = $cdbi->{error_msg};
return;
};
my $dist_ids = $dist_obj->{ids};
foreach my $distname (keys %{$dist_update}) {
my %mods = ();
%mods = map { $_ => 1 } keys %{ $dists->{$distname}->{modules} };
$sth->execute($dist_ids->{$distname}) or do {
$cdbi->db_error($sth);
$self->{error_msg} = $cdbi->{error_msg};
return;
};
while (my ($mod_id, $mod_name) = $sth->fetchrow_array) {
next if $mods{$mod_name};
$delete->{$mod_name} = $mod_id;
}
}
$sth->finish;
undef $sth;
}
$self->{update} = $update;
$self->{insert} = $insert;
$self->{delete} = $delete;
return 1;
}
package CPAN::SQLite::State::info;
use parent 'CPAN::SQLite::State';
use CPAN::SQLite::Util qw(has_hash_data print_debug);
sub new {
my ($class, %args) = @_;
my $cdbi = $args{cdbi};
die "No dbi object available"
unless ($cdbi and ref($cdbi) eq 'CPAN::SQLite::DBI::Index::info');
my $self = {
info => '',
insert => {},
update => {},
delete => {},
ids => {},
obj => {},
cdbi => $cdbi,
error_msg => '',
info_msg => '',
};
return bless $self, $class;
}
sub state {
my $self = shift;
return 1;
}
package CPAN::SQLite::State;
1;
__END__
=head1 NAME
CPAN::SQLite::State - get state information on the database
=head1 VERSION
version 0.217
=head1 DESCRIPTION
This module gets information on the current state of the
database and compares it to that obtained from the CPAN
index files from I<CPAN::SQLite::Info> and from the
repositories from I<CPAN::SQLite::PPM>. For each of the
four tables I<dists>, I<mods>, I<auths>, and I<ppms>,
two methods are used to get this information:
=over 3
=item * C<ids>
This method gets the ids of the relevant names, and
versions, if applicable, in the table.
=item * C<state>
This method compares the information in the tables
obtained from the C<ids> method to that from the
CPAN indices and ppm repositories. One of three actions
is then decided, which is subsequently acted upon in
I<CPAN::SQLite::Populate>.
=over 3
=item * C<insert>
If the information in the indices is not in the
database, this information is marked for insertion.
=item * C<update>
If the information in the database is older than that
form the indices (generally, this means an older version),
the information is marked for updating.
=item * C<delete>
If the information in the database is no longer present
in the indices, the information is marked for deletion.
=back
=back
=cut