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|
## Helper file for the check_postgres.pl tests
use strict;
use warnings;
use Data::Dumper;
use DBI;
select(($|=1,select(STDERR),$|=1)[1]); ## no critic
my @schemas =
(
'check_postgres_testschema',
'check_postgres_testschema2',
);
my @tables =
(
'check_postgres_test',
'check_postgres_test2',
'check_postgres_test3',
);
my @sequences =
(
'check_postgres_testsequence',
);
my $S = 'check_postgres_testschema';
sub connect_database {
## Connect to the database (unless 'dbh' is passed in)
## Setup all the tables (unless 'nosetup' is passed in)
## Returns three values:
## 1. helpconnect for use by ??
## 2. Any error generated
## 3. The database handle, or undef
## The returned handle has AutoCommit=0 (unless AutoCommit is passed in)
my $arg = shift || {};
ref $arg and ref $arg eq 'HASH' or die qq{Need a hashref!\n};
my $dbh = $arg->{dbh} || '';
my $helpconnect = 0;
if (!defined $ENV{DBI_DSN}) {
$helpconnect = 1;
$ENV{DBI_DSN} = 'dbi:Pg:';
}
if (!$dbh) {
eval {
$dbh = DBI->connect($ENV{DBI_DSN}, $ENV{DBI_USER}, $ENV{DBI_PASS},
{RaiseError => 1, PrintError => 0, AutoCommit => 1});
};
if ($@) {
return $helpconnect, $@, undef if $@ !~ /FATAL/ or defined $ENV{DBI_USER};
## Try one more time as postgres user (and possibly database)
if ($helpconnect) {
$ENV{DBI_DSN} .= 'dbname=postgres';
$helpconnect += 2;
}
$helpconnect += 4;
$ENV{DBI_USER} = $^O =~
/openbsd/ ? '_postgresql'
: $^O =~ /bsd/i ? 'pgsql'
: 'postgres';
eval {
$dbh = DBI->connect($ENV{DBI_DSN}, $ENV{DBI_USER}, $ENV{DBI_PASS},
{RaiseError => 1, PrintError => 0, AutoCommit => 1});
};
if ($@) {
## Try one final time for Beastie
if ($ENV{DBI_USER} ne 'postgres') {
$helpconnect += 8;
$ENV{DBI_USER} = 'postgres';
eval {
$dbh = DBI->connect($ENV{DBI_DSN}, $ENV{DBI_USER}, $ENV{DBI_PASS},
{RaiseError => 1, PrintError => 0, AutoCommit => 1});
};
}
return $helpconnect, $@, undef if $@;
}
}
}
if ($arg->{nosetup}) {
return $helpconnect, undef, $dbh unless schema_exists($dbh, $S);
$dbh->do("SET search_path TO $S");
}
else {
cleanup_database($dbh);
eval {
$dbh->do("CREATE SCHEMA $S");
};
$@ and return $helpconnect, $@, undef;
$dbh->do("SET search_path TO $S");
$dbh->do('CREATE SEQUENCE check_postgres_testsequence');
# If you add columns to this, please do not use reserved words!
my $SQL = q{
CREATE TABLE check_postgres_test (
id integer not null primary key,
val text
)
};
$dbh->{Warn} = 0;
$dbh->do($SQL);
$dbh->{Warn} = 1;
} ## end setup
$dbh->commit() unless $dbh->{AutoCommit};
if ($arg->{disconnect}) {
$dbh->disconnect();
return $helpconnect, undef, undef;
}
$dbh->{AutoCommit} = 0 unless $arg->{AutoCommit};
return $helpconnect, undef, $dbh;
} ## end of connect_database
sub schema_exists {
my ($dbh,$schema) = @_;
my $SQL = 'SELECT 1 FROM pg_catalog.pg_namespace WHERE nspname = ?';
my $sth = $dbh->prepare_cached($SQL);
my $count = $sth->execute($schema);
$sth->finish();
return $count < 1 ? 0 : 1;
}
sub relation_exists {
my ($dbh,$schema,$name) = @_;
my $SQL = 'SELECT 1 FROM pg_catalog.pg_class c, pg_catalog.pg_namespace n '.
'WHERE n.oid=c.relnamespace AND n.nspname = ? AND c.relname = ?';
my $sth = $dbh->prepare_cached($SQL);
my $count = $sth->execute($schema,$name);
$sth->finish();
return $count < 1 ? 0 : 1;
}
sub cleanup_database {
my $dbh = shift;
my $type = shift || 0;
return unless defined $dbh and ref $dbh and $dbh->ping();
## For now, we always run and disregard the type
$dbh->rollback() if ! $dbh->{AutoCommit};
for my $name (@tables) {
my $schema = ($name =~ s/(.+)\.(.+)/$2/) ? $1 : $S;
next if ! relation_exists($dbh,$schema,$name);
$dbh->do("DROP TABLE $schema.$name");
}
for my $name (@sequences) {
my $schema = ($name =~ s/(.+)\.(.+)/$2/) ? $1 : $S;
next if ! relation_exists($dbh,$schema,$name);
$dbh->do("DROP SEQUENCE $schema.$name");
}
for my $schema (@schemas) {
next if ! schema_exists($dbh,$schema);
$dbh->do("DROP SCHEMA $schema CASCADE");
}
$dbh->commit() if ! $dbh->{AutoCommit};
return;
}
1;
|
