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|
package MR::IProto::Server::Connection;
=head1 NAME
MR::IProto::Server::Connection - server connection
=head1 DESCRIPTION
=cut
use Mouse;
use AnyEvent::DNS;
use Scalar::Util qw/weaken/;
with 'MR::IProto::Role::Debuggable';
has handler => (
is => 'ro',
isa => 'CodeRef',
required => 1,
);
has on_accept => (
is => 'ro',
isa => 'CodeRef',
);
has on_close => (
is => 'ro',
isa => 'CodeRef',
);
has on_error => (
is => 'ro',
isa => 'CodeRef',
);
has fh => (
is => 'ro',
isa => 'FileHandle',
required => 1,
);
has host => (
is => 'ro',
isa => 'Str',
required => 1,
);
has port => (
is => 'ro',
isa => 'Int',
required => 1,
);
has hostname => (
is => 'ro',
isa => 'Str',
writer => '_hostname',
lazy_build => 1,
);
has _handle => (
is => 'ro',
isa => 'AnyEvent::Handle',
lazy_build => 1,
);
has _recv_header => (
is => 'ro',
isa => 'CodeRef',
lazy_build => 1,
);
sub BUILD {
my ($self) = @_;
$self->_debug(sprintf "Connection accepted") if $self->debug >= 1;
weaken($self);
AnyEvent::DNS::reverse_verify $self->host, sub {
my ($hostname) = @_;
if ($hostname) {
$self->_hostname($hostname);
$self->_debug(sprintf "%s resolved as %s", $self->host, $hostname) if $self->debug >= 4;
} else {
$self->_hostname($self->host);
$self->_debug(sprintf "Can't resolve %s", $self->host);
}
$self->_handle;
$self->on_accept->($self) if $self->on_accept;
return;
};
return;
}
sub DEMOLISH {
my ($self) = @_;
$self->_debug(sprintf "Object for connection was destroyed\n") if $self->debug >= 1;
return;
}
sub close {
my ($self) = @_;
$self->on_close->($self) if $self->on_close;
return;
}
sub _build_hostname {
my ($self) = @_;
return $self->host;
}
sub _build__handle {
my ($self) = @_;
weaken($self);
my $peername = join ':', $self->host, $self->port;
return AnyEvent::Handle->new(
fh => $self->fh,
peername => $peername,
on_read => sub {
my ($handle) = @_;
$handle->unshift_read( chunk => 12, $self->_recv_header );
return;
},
on_eof => sub {
my ($handle) = @_;
$self->_debug("Connection closed by foreign host\n") if $self->debug >= 1;
$handle->destroy();
$self->on_close->($self) if $self->on_close;
return;
},
on_error => sub {
my ($handle, $fatal, $message) = @_;
$handle->destroy();
if ($self->on_error) {
$self->_debug("error: $message\n") if $self->debug >= 1;
$self->on_error->($self, $message);
} else {
$self->_debug("error: $message\n");
}
$self->on_close->($self) if $self->on_close;
return;
}
);
return;
}
sub _build__recv_header {
my ($self) = @_;
weaken($self);
my $handler = $self->handler;
return sub {
my ($handle, $data) = @_;
$self->_debug_dump('recv header: ', $data) if $self->debug >= 5;
my ($cmd, $length, $sync) = unpack 'L3', $data;
$handle->unshift_read(
chunk => $length,
sub {
my ($handle, $data) = @_;
$self->_debug_dump('recv payload: ', $data) if $self->debug >= 5;
my $result;
if (eval { $result = $handler->($self, $cmd, $data); 1 }) {
my $header = pack 'L3', $cmd, length $result, $sync;
if ($self->debug >= 6) {
$self->_debug_dump('send header: ', $header);
$self->_debug_dump('send payload: ', $result);
}
$handle->push_write($header . $result);
} else {
warn $@;
$self->_debug("Failed to handle cmd=$cmd\n");
}
return;
}
);
return;
};
}
sub _debug {
my ($self, $msg) = @_;
$self->debug_cb->( sprintf "%s(%s:%d): %s", $self->hostname, $self->host, $self->port, $msg );
return;
}
no Mouse;
__PACKAGE__->meta->make_immutable();
1;
|
