1 package OpenSRF::AppSession;
3 #use OpenSRF::DOM::Element::userAuth;
4 use OpenSRF::DomainObject::oilsMessage;
5 use OpenSRF::DomainObject::oilsMethod;
6 use OpenSRF::DomainObject::oilsResponse qw/:status/;
7 use OpenSRF::Transport::PeerHandle;
8 use OpenSRF::Utils::Logger qw(:level);
9 use OpenSRF::Utils::SettingsClient;
10 use OpenSRF::Utils::Config;
14 use base qw/Exporter OpenSRF/;
15 use Time::HiRes qw( time usleep );
19 our @EXPORT_OK = qw/CONNECTING INIT_CONNECTED CONNECTED DISCONNECTED CLIENT SERVER/;
20 our %EXPORT_TAGS = ( state => [ qw/CONNECTING INIT_CONNECTED CONNECTED DISCONNECTED/ ],
21 endpoint => [ qw/CLIENT SERVER/ ],
24 my $logger = "OpenSRF::Utils::Logger";
30 sub kill_client_session_cache {
31 for my $session ( @_CLIENT_CACHE ) {
36 sub CONNECTING { return 3 };
37 sub INIT_CONNECTED { return 4 };
38 sub CONNECTED { return 1 };
39 sub DISCONNECTED { return 2 };
41 sub CLIENT { return 2 };
42 sub SERVER { return 1 };
45 return undef unless (defined $_[1]);
46 return $_CACHE{$_[1]} if (exists($_CACHE{$_[1]}));
50 my( $self, $app ) = @_;
51 $logger->debug( "Client Cache contains: " .scalar(@_CLIENT_CACHE), INTERNAL );
52 my ($client) = grep { $_->[0] eq $app and $_->[1] == 1 } @_CLIENT_CACHE;
57 sub transport_connected {
59 if( ! exists $self->{peer_handle} || ! $self->{peer_handle} ) {
62 return $self->{peer_handle}->tcp_connected();
65 # ----------------------------------------------------------------------------
66 # Clears the transport buffers
67 # call this if you are not through with the sesssion, but you want
68 # to have a clean slate. You shouldn't have to call this if
69 # you are correctly 'recv'ing all of the data from a request.
70 # however, if you don't want all of the data, this will
71 # slough off any excess
72 # * * Note: This will delete data for all sessions using this transport
73 # handle. For example, all client sessions use the same handle.
74 # ----------------------------------------------------------------------------
78 if( ! exists $self->{peer_handle} || ! $self->{peer_handle} ) {
81 $self->{peer_handle}->buffer_reset();
87 push @_CLIENT_CACHE, [ $self->app, 1, $self ];
90 # when any incoming data is received, this method is called.
93 $class = ref($class) || $class;
96 my $remote_id = shift;
99 return undef unless ($sess_id and $remote_id and $service);
101 my $config_client = OpenSRF::Utils::SettingsClient->new();
103 if ( my $thingy = $class->find($sess_id) ) {
104 $thingy->remote_id( $remote_id );
105 $logger->debug( "AppSession returning existing session $sess_id", DEBUG );
108 $logger->debug( "AppSession building new server session $sess_id", DEBUG );
111 if( $service eq "client" ) {
112 #throw OpenSRF::EX::PANIC ("Attempting to build a client session as a server" .
113 # " Session ID [$sess_id], remote_id [$remote_id]");
114 $logger->debug("Attempting to build a client session as ".
115 "a server Session ID [$sess_id], remote_id [$remote_id]", ERROR );
119 #my $max_requests = $conf->$service->max_requests;
120 my $max_requests = $config_client->config_value("apps",$service,"max_requests");
121 $logger->debug( "Max Requests for $service is $max_requests", INTERNAL ) if (defined $max_requests);
123 $logger->transport( "AppSession creating new session: $sess_id", INTERNAL );
125 my $self = bless { recv_queue => [],
132 session_id => $sess_id,
133 remote_id => $remote_id,
134 peer_handle => OpenSRF::Transport::PeerHandle->retrieve($service),
135 max_requests => $max_requests,
136 session_threadTrace => 0,
140 return $_CACHE{$sess_id} = $self;
145 my ($name, $datum) = @_;
147 $self->{session_data}->{$name} = $datum if (defined $datum);
148 return $self->{session_data}->{$name};
151 sub service { return shift()->{service}; }
153 sub continue_request {
155 $self->{'requests'}++;
156 return 1 if (!$self->{'max_requests'});
157 return $self->{'requests'} <= $self->{'max_requests'} ? 1 : 0;
160 sub last_sent_payload {
161 my( $self, $payload ) = @_;
163 return $self->{'last_sent_payload'} = $payload;
165 return $self->{'last_sent_payload'};
169 my( $self, $type ) = @_;
171 return $self->{'last_sent_type'} = $type;
173 return $self->{'last_sent_type'};
176 sub get_app_targets {
179 my $conf = OpenSRF::Utils::Config->current;
180 my $router_name = $conf->bootstrap->router_name;
181 my $routers = $conf->bootstrap->domains;
183 unless($router_name and $routers) {
184 throw OpenSRF::EX::Config
185 ("Missing router config information 'router_name' and 'routers'");
189 for my $router (@$routers) {
190 push @targets, "$router_name\@$router/$app";
196 # When we're a client and we want to connect to a remote service
197 # create( $app, username => $user, secret => $passwd );
199 # create( $app, sysname => $user, secret => $shared_secret );
202 $class = ref($class) || $class;
206 if( my $thingy = OpenSRF::AppSession->find_client( $app ) ) {
207 $logger->debug( "AppSession returning existing client session for $app", DEBUG );
210 $logger->debug( "AppSession creating new client session for $app", DEBUG );
214 my $sess_id = time . rand( $$ );
215 while ( $class->find($sess_id) ) {
216 $sess_id = time . rand( $$ );
219 my ($r_id) = get_app_targets($app);
221 my $peer_handle = OpenSRF::Transport::PeerHandle->retrieve("client");
222 if( ! $peer_handle ) {
223 $peer_handle = OpenSRF::Transport::PeerHandle->retrieve("system_client");
226 my $self = bless { app_name => $app,
227 #client_auth => $auth,
231 state => DISCONNECTED,#since we're init'ing
232 session_id => $sess_id,
235 orig_remote_id => $r_id,
236 peer_handle => $peer_handle,
237 session_threadTrace => 0,
240 $self->client_cache();
241 $_CACHE{$sess_id} = $self;
242 return $self->find_client( $app );
246 return shift()->{api_level};
250 return shift()->{app_name};
255 $self->remote_id($$self{orig_remote_id});
258 # 'connect' can be used as a constructor if called as a class method,
259 # or used to connect a session that has disconnectd if called against
260 # an existing session that seems to be disconnected, or was just built
261 # using 'create' above.
263 # connect( $app, username => $user, secret => $passwd );
265 # connect( $app, sysname => $user, secret => $shared_secret );
267 # --- Returns undef if the connect attempt times out.
268 # --- Returns the OpenSRF::EX object if one is returned by the server
269 # --- Returns self if connected
272 my $class = ref($self) || $self;
275 if ( ref( $self ) and $self->state && $self->state == CONNECTED ) {
276 $logger->transport("ABC AppSession already connected", DEBUG );
278 $logger->transport("ABC AppSession not connected, connecting..", DEBUG );
280 return $self if ( ref( $self ) and $self->state && $self->state == CONNECTED );
283 my $api_level = shift;
284 $api_level = 1 unless (defined $api_level);
286 $self = $class->create($app, @_) if (!ref($self));
287 return undef unless ($self);
289 $self->{api_level} = $api_level;
292 $self->state(CONNECTING);
293 $self->send('CONNECT', "");
295 # if we want to connect to settings, we may not have
296 # any data for the settings client to work with...
297 # just using a default for now XXX
299 my $time_remaining = 5;
302 my $client = OpenSRF::Utils::SettingsClient->new();
303 my $trans = $client->config_value("client_connection","transport_host");
306 $time_remaining = $trans->{connect_timeout};
308 # XXX for now, just use the first
309 $time_remaining = $trans->[0]->{connect_timeout};
313 while ( $self->state != CONNECTED and $time_remaining > 0 ) {
314 my $starttime = time;
315 $self->queue_wait($time_remaining);
317 $time_remaining -= ($endtime - $starttime);
320 return undef unless($self->state == CONNECTED);
327 if( ! $self->session_id ) {
330 #$self->disconnect if ($self->endpoint == CLIENT);
331 for my $ses ( @_CLIENT_CACHE ) {
332 if ($ses->[2]->session_id eq $self->session_id) {
338 sub unregister_callback {
342 if (exists $self->{callbacks}{$type}) {
343 delete $self->{callbacks}{$type}{$cb};
349 sub register_callback {
354 $self->{callbacks}{$type}{$cb_key} = $cb;
360 if( ! $self->session_id ) { return 0; }
362 # run each 'death' callback;
363 if (exists $self->{callbacks}{death}) {
364 for my $sub (values %{$self->{callbacks}{death}}) {
370 $logger->transport( "AppSession killing self: " . $self->session_id(), DEBUG );
372 for my $ses ( @_CLIENT_CACHE ) {
374 if ($ses->[2]->session_id ne $self->session_id);
377 delete $_CACHE{$self->session_id};
378 delete($$self{$_}) for (keys %$self);
384 # run each 'disconnect' callback;
385 if (exists $self->{callbacks}{disconnect}) {
386 for my $sub (values %{$self->{callbacks}{disconnect}}) {
391 unless( $self->state == DISCONNECTED ) {
392 $self->send('DISCONNECT', "") if ($self->endpoint == CLIENT);;
393 $self->state( DISCONNECTED );
406 $method = new OpenSRF::DomainObject::oilsMethod ( method => $meth );
411 $method->params( @_ );
413 $self->send('REQUEST',$method);
422 $method = new OpenSRF::DomainObject::oilsMethod ( method => $meth );
427 $method->params( @_ );
429 $self->send(CONNECT => '', REQUEST => $method, DISCONNECT => '');
434 my @payload_list = @_; # this is a Domain Object
437 return unless ($self and $self->{peer_handle});
439 $logger->debug( "In send", INTERNAL );
443 if( @payload_list % 2 ) { $tT = pop @payload_list; }
445 if( ! @payload_list ) {
446 $logger->debug( "payload_list param is incomplete in AppSession::send()", ERROR );
450 my $doc = OpenSRF::DOM->createDocument();
452 $logger->debug( "In send2", INTERNAL );
457 while( @payload_list ) {
459 my ($msg_type, $payload) = ( shift(@payload_list), shift(@payload_list) );
461 if ($msg_type eq 'DISCONNECT' ) {
463 if( $self->state == DISCONNECTED && !$connecting) {
468 if( $msg_type eq "CONNECT" ) { $connecting++; }
472 $logger->debug( "Payload is ".$payload->toString, INTERNAL );
476 my $msg = OpenSRF::DomainObject::oilsMessage->new();
477 $logger->debug( "AppSession after creating oilsMessage $msg", INTERNAL );
479 $msg->type($msg_type);
480 $logger->debug( "AppSession after adding type" . $msg->toString(), INTERNAL );
482 #$msg->userAuth($self->client_auth) if ($self->endpoint == CLIENT && $msg_type eq 'CONNECT');
485 $msg->threadTrace( $tT || int($self->session_threadTrace) || int($self->last_threadTrace) );
488 if ($msg->type eq 'REQUEST') {
489 if ( !defined($tT) || $self->last_threadTrace != $tT ) {
490 $msg->update_threadTrace;
491 $self->session_threadTrace( $msg->threadTrace );
492 $tT = $self->session_threadTrace;
493 OpenSRF::AppRequest->new($self, $payload);
497 $msg->api_level($self->api_level);
498 $msg->payload($payload) if $payload;
500 $doc->documentElement->appendChild( $msg );
503 $logger->debug( "AppSession sending ".$msg->type." to ".$self->remote_id.
504 " with threadTrace [".$msg->threadTrace."]", INFO );
508 if ($self->endpoint == CLIENT and ! $disconnect) {
509 $self->queue_wait(0);
510 unless ($self->state == CONNECTED || ($self->state == CONNECTING && $connecting )) {
511 my $v = $self->connect();
513 $logger->debug( "Unable to connect to remote service in AppSession::send()", ERROR );
516 if( ref($v) and $v->can("class") and $v->class->isa( "OpenSRF::EX" ) ) {
521 $logger->debug( "AppSession sending doc: " . $doc->toString(), INTERNAL );
524 $self->{peer_handle}->send(
525 to => $self->remote_id,
526 thread => $self->session_id,
527 body => $doc->toString );
530 $self->state( DISCONNECTED );
533 return $self->app_request( $tT );
540 return undef unless (defined $tT);
541 my ($req) = grep { $_->threadTrace == $tT } @{ $self->{request_queue} };
546 sub remove_app_request {
550 my @list = grep { $_->threadTrace != $req->threadTrace } @{ $self->{request_queue} };
552 $self->{request_queue} = \@list;
556 return $_[0]->{endpoint};
562 return $self->{session_id};
568 my $req = $self->app_request($resp->[1]);
569 return $req->push_queue( $resp->[0] ) if ($req);
570 push @{ $self->{recv_queue} }, $resp->[0];
573 sub last_threadTrace {
575 my $new_last_threadTrace = shift;
577 my $old_last_threadTrace = $self->{last_threadTrace};
578 if (defined $new_last_threadTrace) {
579 $self->{last_threadTrace} = $new_last_threadTrace;
580 return $new_last_threadTrace unless ($old_last_threadTrace);
583 return $old_last_threadTrace;
586 sub session_threadTrace {
588 my $new_last_threadTrace = shift;
590 my $old_last_threadTrace = $self->{session_threadTrace};
591 if (defined $new_last_threadTrace) {
592 $self->{session_threadTrace} = $new_last_threadTrace;
593 return $new_last_threadTrace unless ($old_last_threadTrace);
596 return $old_last_threadTrace;
599 sub last_message_type {
601 my $new_last_message_type = shift;
603 my $old_last_message_type = $self->{last_message_type};
604 if (defined $new_last_message_type) {
605 $self->{last_message_type} = $new_last_message_type;
606 return $new_last_message_type unless ($old_last_message_type);
609 return $old_last_message_type;
612 sub last_message_api_level {
614 my $new_last_message_api_level = shift;
616 my $old_last_message_api_level = $self->{last_message_api_level};
617 if (defined $new_last_message_api_level) {
618 $self->{last_message_api_level} = $new_last_message_api_level;
619 return $new_last_message_api_level unless ($old_last_message_api_level);
622 return $old_last_message_api_level;
627 my $new_remote_id = shift;
629 my $old_remote_id = $self->{remote_id};
630 if (defined $new_remote_id) {
631 $self->{remote_id} = $new_remote_id;
632 return $new_remote_id unless ($old_remote_id);
635 return $old_remote_id;
643 my $old_ua = $self->{client_auth};
644 if (defined $new_ua) {
645 $self->{client_auth} = $new_ua;
646 return $new_ua unless ($old_ua);
649 return $old_ua->cloneNode(1);
654 my $new_state = shift;
656 my $old_state = $self->{state};
657 if (defined $new_state) {
658 $self->{state} = $new_state;
659 return $new_state unless ($old_state);
667 delete $$self{$_} for keys %$self;
677 if ( !(@proto_args % 2) ) {
679 } elsif (@proto_args == 1) {
680 %args = ( timeout => @proto_args );
684 #$logger->debug( ref($self). " recv_queue before wait: " . $self->_print_queue(), INTERNAL );
686 if( exists( $args{timeout} ) ) {
687 $args{timeout} = int($args{timeout});
692 #$args{timeout} = 0 if ($self->complete);
694 $logger->debug( ref($self) ."->recv with timeout " . $args{timeout}, INTERNAL );
698 my $avail = @{ $self->{recv_queue} };
699 my $time_remaining = $args{timeout};
701 while ( $avail < $args{count} and $time_remaining > 0 ) {
702 last if $self->complete;
703 my $starttime = time;
704 $self->queue_wait($time_remaining);
706 $time_remaining -= ($endtime - $starttime);
707 $avail = @{ $self->{recv_queue} };
710 #$logger->debug( ref($self)." queue after wait: " . $self->_print_queue(), INTERNAL );
713 while ( my $msg = shift @{ $self->{recv_queue} } ) {
715 last if (scalar(@list) >= $args{count});
718 # $self->{recv_queue} = [@unlist, @{ $self->{recv_queue} }];
719 $logger->debug( "Number of matched responses: " . @list, DEBUG );
721 $self->queue_wait(0); # check for statuses
723 return $list[0] unless (wantarray);
729 push @OpenSRF::AppSession::_RESEND_QUEUE, @_;
734 $logger->debug( "Resending..." . @_RESEND_QUEUE, DEBUG );
735 while ( my $req = shift @OpenSRF::AppSession::_RESEND_QUEUE ) {
736 $req->resend unless $req->complete;
743 if( ! $self->{peer_handle} ) { return 0; }
744 my $timeout = shift || 0;
745 $logger->debug( "Calling queue_wait($timeout)" , DEBUG );
746 $logger->debug( "Timestamp before process($timeout) : " . $logger->format_time(), INTERNAL );
747 my $o = $self->{peer_handle}->process($timeout);
748 $logger->debug( "Timestamp after process($timeout) : " . $logger->format_time(), INTERNAL );
756 foreach my $msg ( @{$self->{recv_queue}} ) {
757 $string = $string . $msg->toString(1) . "\n";
765 $self->send( 'STATUS', @_ );
768 #-------------------------------------------------------------------------------
770 package OpenSRF::AppRequest;
771 use base qw/OpenSRF::AppSession/;
772 use OpenSRF::Utils::Logger qw/:level/;
773 use OpenSRF::DomainObject::oilsResponse qw/:status/;
777 $class = ref($class) || $class;
780 my $threadTrace = $session->session_threadTrace || $session->last_threadTrace;
783 my $self = { session => $session,
784 threadTrace => $threadTrace,
790 bless $self => $class;
792 push @{ $self->session->{request_queue} }, $self;
798 my $size = @{$_[0]->{recv_queue}};
804 return unless ($self and $self->session);
805 $self->session->send(@_);
810 return unless $self->session;
811 $self->session->remove_app_request($self);
812 delete($$self{$_}) for (keys %$self);
816 return shift()->{session};
821 my $complete = shift;
822 return $self->{complete} if ($self->{complete});
823 if (defined $complete) {
824 $self->{complete} = $complete;
826 $self->session->queue_wait(0);
828 return $self->{complete};
833 my $timeout = shift || 1;
834 my $time_remaining = $timeout;
836 while ( ! $self->complete and $time_remaining > 0 ) {
837 my $starttime = time;
838 $self->queue_wait($time_remaining);
840 $time_remaining -= ($endtime - $starttime);
843 return $self->complete;
847 return shift()->{threadTrace};
853 if( !$resp ) { return 0; }
854 if( UNIVERSAL::isa($resp, "Error")) {
855 $self->{failed} = $resp;
857 #return; eventually...
859 push @{ $self->{recv_queue} }, $resp;
860 OpenSRF::Utils::Logger->debug( "AppRequest pushed ".$resp->toString(), INTERNAL );
865 return $self->{failed};
870 OpenSRF::Utils::Logger->debug( "Calling queue_wait(@_)", DEBUG );
871 return $self->session->queue_wait(@_)
874 sub payload { return shift()->{payload}; }
878 return unless ($self and $self->session);
879 return if $self->complete;
880 OpenSRF::Utils::Logger->debug(
881 "I'm resending the request for threadTrace ". $self->threadTrace, DEBUG);
883 OpenSRF::Utils::Logger->debug($self->payload->toString,INTERNAL);
885 return $self->session->send('REQUEST', $self->payload, $self->threadTrace );
891 return unless ($self and $self->session);
892 $self->session->send( 'STATUS',$msg, $self->threadTrace );
898 return unless ($self and $self->session);
901 if (ref($msg) && UNIVERSAL::can($msg, 'getAttribute') && $msg->getAttribute('name') =~ /oilsResult/) {
904 $response = new OpenSRF::DomainObject::oilsResult;
905 $response->content($msg);
908 $self->session->send('RESULT', $response, $self->threadTrace);
911 sub respond_complete {
916 if (ref($msg) && UNIVERSAL::can($msg, 'getAttribute') && $msg->getAttribute('name') =~ /oilsResult/) {
919 $response = new OpenSRF::DomainObject::oilsResult;
920 $response->content($msg);
923 my $stat = OpenSRF::DomainObject::oilsConnectStatus->new(
924 statusCode => STATUS_COMPLETE(),
925 status => 'Request Complete' );
927 return unless ($self and $self->session);
928 $self->session->send( 'RESULT' => $response, 'STATUS' => $stat, $self->threadTrace);
932 sub register_death_callback {
935 $self->session->register_callback( death => $cb );
939 # utility method. checks to see of the request failed.
940 # if so, throws an OpenSRF::EX::ERROR. if everything is
941 # ok, it returns the content of the request
945 $self->wait_complete;
946 my $resp = $self->recv( timeout => 20 );
947 if( $self->failed() ) {
948 throw OpenSRF::EX::ERROR
949 ($self->failed()->stringify());
951 if(!$resp) { return undef; }
952 my $content = $resp->content;
953 if($finish) { $self->finish();}
958 package OpenSRF::AppSubrequest;
963 push @{$$self{resp}}, $resp if (defined $resp);
967 return bless({resp => []}, 'OpenSRF::AppSubrequest');
970 sub responses { @{$_[0]->{resp}} }