Hello, everyone!
I'm having a problem with starting my app via hypnotoad. While in simple
daemon (or morbo) mode everything works fine, app started by hypnotoad is
failed to connect to SQL. I read
https://github.com/kraih/mojo/wiki/Hypnotoad-prefork-web-server and tried
to use one of recipe: DBIx::Connector instead of usual DBI->connect, with
no difference: app is still can't connect to SQL in prefork mode.
The other recipe (with has => dbh) is quite hard to implement without
rewriting all parts of the project, and therefore i decided first to ask,
maybe someone already solved this problem.
So app is basically consist of:
script/portmgr
lib/PortMgr.pm
lib/PortMgr/Controller/Hw.pm
lib/PortMgr/Model/Hw.pm
lib/PortMgr/Storage/PgSQL.pm
chain of calls is like:
in lib/PortMgr.pm:
$r->get('/')->to('hw#mainpage')->name('main');
then to controller:
= lib/PortMgr/Controller/Hw.pm ============================
package PortMgr::Controller::Hw;
use Mojo::Base 'Mojolicious::Controller';
use PortMgr::Model::Hw;
my $hwmodel = PortMgr::Model::Hw->new();
sub mainpage {
my $self = shift;
my $allhw = $hwmodel->get_hw();
$self->render(hw => $allhw);
}
===================================================
= lib/PortMgr/Model/Hw.pm ===============================
package PortMgr::Model::Hw;
use PortMgr::Storage::PgSQL;
my $storage = PortMgr::Storage::PgSQL->new();
sub new {
my $self = shift;
return $self;
}
sub get_hw {
my $self = shift;
my $hw_id = shift;
my $data = $storage->query(
table => ...,
fields => ....,
join => ...,
where => ...,
);
return $data;
}
===================================================
= lib/PortMgr/Storage/PgSQL.pm ===========================
package PortMgr::Storage::PgSQL;
use DBI;
use DBIx::Connector;
# Singleton
our $instance = undef;
sub new {
my $class = shift;
return $instance if defined $instance;
my $self = {};
$instance = bless ($self, $class);
$self->{db} = $instance->init();
return $instance;
}
sub init {
my $self = shift;
my $db = shift;
$self->{db} =
DBIx::Connector->connect("dbi:Pg:dbname=ports;host=127.0.0.10", "pgsql",
"", {AutoCommit => 1, RaiseError => 1});
if (!$self->{db}) {
$log->error("INIT Error: " . $DBI::errstr);
return undef;
}
return $self->{db};
}
sub query {
my $self = shift;
my $opt = { @_ };
....
....
my $q = "SELECT $sql_fields FROM $table $sql_join $sql_where $sql_group
$sql_order";
return $self->{db}->selectall_hashref($q,$key);
}
===================================================
When in development mode or non-forked mode of hypnotoad, everything works
fine, but in prefork mode I get error:
DBD::Pg::db selectall_hashref failed: server closed the connection
unexpectedly.
And if I try to use recipe with "has => dbh", somehow i need to get access
to $self->app in lib/PortMgr/Storage/PgSQL.pm, but it is not a Mojolicious
controller class, so i need to drag $dbh from lib/PortMgr.pm to
lib/PortMgr/Controller/Hw.pm to lib/PortMgr/Model/Hw.pm to
lib/PortMgr/Storage/PgSQL.pm?
Is there any other solution?
--
With regards,
Alexander Lunev
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