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## ------------------------------------------------------------------------ |
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## $Id: WebCache.pm,v 1.3 2003/06/25 23:37:04 joko Exp $ |
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## ------------------------------------------------------------------------ |
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## $Log: WebCache.pm,v $ |
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## ------------------------------------------------------------------------ |
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package POE::Component::LookupService; |
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|
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use strict; |
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use warnings; |
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|
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use POE qw( Component::RPCXML::Server Component::StorageAgent Component::ServiceRegistrar ); |
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use RPC::XML; |
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use Data::Dumper; |
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|
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|
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sub new { |
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my $classname = shift; |
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my @args = @_; |
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|
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my $self = {}; |
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bless $self, $classname; |
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|
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$self->{options} = { @args }; |
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|
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#my $event_handler = lookupd->new(); |
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POE::Session->create( |
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object_states => [ |
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$self => [qw( _start _stop boot_intercom boot_storage boot_registrar handle_request send_response )] |
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] |
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); |
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|
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} |
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|
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# This is not a POE method. It's a plain OO one. |
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sub debug { |
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my $self = shift; |
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my $msg = shift; |
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$msg ||= ''; |
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print STDERR __PACKAGE__ . ": " . $msg, "\n"; |
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} |
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|
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# Controller's event handlers |
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|
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sub _start { |
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my ( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
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$self->debug("_start"); |
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|
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#$kernel->alias_set("controller"); |
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|
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#$kernel->post( controller => 'start_daemon' ); |
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$kernel->yield( 'boot_storage' ); |
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$kernel->yield( 'boot_registrar' ); |
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$kernel->yield( 'boot_intercom' ); |
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#$_[HEAP]->{subsession} = POE::Session->create( inline_states => { _start => sub { print "WORKER!", "\n"; } } ); |
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#$_[HEAP]->{subsession}->yield( |
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|
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}; |
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|
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sub _stop { |
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my ( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
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$self->debug("_stop"); |
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}; |
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|
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sub boot_intercom { |
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|
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my ( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
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$self->debug("boot_intercom"); |
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|
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# Server component - encapsulates some session(s) and/or wheel(s)? |
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|
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# V1 - windy?! |
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# - dies on empty payloads |
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# - requires addressing of "session"-parameter inside url (security flaw?) |
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# + method publishing/rescinding |
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#POE::Component::Server::XMLRPC->new( alias => "xmlrpc", port => 3332 ); |
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|
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# V2 - seems to be times more robust! i.e. offers these features: |
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# + doesn't die on empty xml-payloads in request |
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# + doesn't require session addressing through url |
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# + more flexible event dispatching |
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# - no remote method publishing and/or rescinding |
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# + doesn't even call the dispatching method on empty payloads! ("method-missing", etc.) |
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POE::Component::RPCXML::Server->new( |
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'Alias' => 'rpcxml-server', |
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'Port' => $self->{options}->{daemon}->{port}, |
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'DispatchEvent' => 'handle_request', |
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'Debug' => 0, |
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); |
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|
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# V3 - IKC |
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# Don't do that here! It doesn't work! |
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#use POE::Component::IKC::Server; |
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#create_ikc_server( port => 30, name => 'LookupService' ); |
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|
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}; |
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|
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sub boot_storage { |
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|
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my ( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
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$self->debug("boot_storage"); |
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|
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#print Dumper($self->{options}->{storage}); |
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$heap->{db} = POE::Component::StorageAgent->new( $self->{options}->{storage} ); |
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|
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} |
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|
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sub boot_registrar { |
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my ( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
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$self->debug("boot_registrar"); |
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$heap->{reg} = POE::Component::ServiceRegistrar->new(); |
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} |
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|
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sub handle_request { |
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my ( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
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|
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my $request = $_[ARG0]; |
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my $wheel = $_[ARG1]; |
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|
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#print Dumper($request); |
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$self->debug("handle_request: method='$request->{name}'"); |
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|
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#my $payload = {}; |
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|
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my $method = $request->{name}; |
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if ($method eq 'ServiceRegistrar.register') { |
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#$payload->{msg} = 'Registration running'; |
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my $authenticated = 1; |
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if ($authenticated) { |
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# send response back to client |
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#my $response = RPC::XML::response->new($payload); |
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$kernel->yield( send_response => $wheel => 'ok' ); |
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|
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# handle registration |
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my $query = { |
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'abc' => 'def', |
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}; |
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$kernel->post( storage => 'query' => $query ); |
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} |
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} elsif ($method eq 'ServiceRegistrar.list') { |
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} elsif ($method eq 'Lease.renew') { |
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} elsif ($method eq 'system.shutdown') { |
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exit; |
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#$kernel->signal( 'TERM' ); |
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} elsif ($method eq 'storage.deploy') { |
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$kernel->post( storage => 'deploy' ); |
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} |
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|
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#my $response = RPC::XML::response->new('ok'); |
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#POE::Component::RPCXML::Server->send_resp($wheel, $response->as_string); |
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#$kernel->yield( send_response => $response, $wheel ); |
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|
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}; |
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|
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sub send_response { |
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my ( $self, $kernel, $heap ) = @_[ OBJECT, KERNEL, HEAP ]; |
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$self->debug("send_response"); |
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my $wheel = $_[ARG0]; |
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my $response = $_[ARG1]; |
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if (ref $response ne 'RPC::XML::response') { |
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print "NEW!", "\n"; |
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$response = RPC::XML::response->new( $response ); |
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} |
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POE::Component::RPCXML::Server->send_resp($wheel, $response->as_string); |
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} |
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|
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1; |
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__END__ |
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