src/perlmods/OpenSRF/Application.pm

   1 package OpenSRF::Application;
   2 # vim:noet:ts=4
   3 use vars qw/$_app $log @_METHODS $thunk $server_class/;
   4
   5 use base qw/OpenSRF/;
   6 use OpenSRF::AppSession;
   7 use OpenSRF::DomainObject::oilsMethod;
   8 use OpenSRF::DomainObject::oilsResponse qw/:status/;
   9 use OpenSRF::Utils::Logger qw/:level $logger/;
  10 use Data::Dumper;
  11 use Time::HiRes qw/time/;
  12 use OpenSRF::EX qw/:try/;
  13 use Carp;
  14 use OpenSRF::Utils::JSON;
  15 #use OpenSRF::UnixServer;  # to get the server class from UnixServer::App
  16
  17 sub DESTROY{};
  18
  19 use strict;
  20 use warnings;
  21
  22 $log = 'OpenSRF::Utils::Logger';
  23
  24 our $in_request = 0;
  25 our @pending_requests;
  26
  27 sub package {
  28         my $self = shift;
  29         return 1 unless ref($self);
  30         return $self->{package};
  31 }
  32
  33 sub signature {
  34         my $self = shift;
  35         return 0 unless ref($self);
  36         return $self->{signature};
  37 }
  38
  39 sub argc {
  40         my $self = shift;
  41         return 0 unless ref($self);
  42         return $self->{argc};
  43 }
  44
  45 sub api_name {
  46         my $self = shift;
  47         return 1 unless ref($self);
  48         return $self->{api_name};
  49 }
  50
  51 sub api_level {
  52         my $self = shift;
  53         return 1 unless ref($self);
  54         return $self->{api_level};
  55 }
  56
  57 sub server_class {
  58         my $class = shift;
  59         if($class) {
  60                 $server_class = $class;
  61         }
  62         return $server_class;
  63 }
  64
  65 sub thunk {
  66         my $self = shift;
  67         my $flag = shift;
  68         $thunk = $flag if (defined $flag);
  69         return $thunk;
  70 }
  71
  72 sub application_implementation {
  73         my $self = shift;
  74         my $app = shift;
  75
  76         if (defined $app) {
  77                 $_app = $app;
  78                 $_app->use;
  79                 if( $@ ) {
  80                         $log->error( "Error loading application_implementation: $app -> $@", ERROR);
  81                 }
  82
  83         }
  84
  85         return $_app;
  86 }
  87
  88 sub handler {
  89         my ($self, $session, $app_msg) = @_;
  90
  91         if( ! $app_msg ) {
  92                 return 1;  # error?
  93         }
  94
  95         my $app = $self->application_implementation;
  96
  97         if ($session->last_message_type eq 'REQUEST') {
  98
  99         my @p = $app_msg->params;
 100                 my $method_name = $app_msg->method;
 101                 my $method_proto = $session->last_message_api_level;
 102                 $log->info("CALL: $method_name [". (@p ? join(', ',@p) : '') ."]");
 103
 104                 my $coderef = $app->method_lookup( $method_name, $method_proto, 1, 1 );
 105
 106                 unless ($coderef) {
 107                         $session->status( OpenSRF::DomainObject::oilsMethodException->new(
 108                                                 statusCode => STATUS_NOTFOUND(),
 109                                                 status => "Method [$method_name] not found for $app"));
 110                         return 1;
 111                 }
 112
 113                 unless ($session->continue_request) {
 114                         $session->status(
 115                                 OpenSRF::DomainObject::oilsConnectStatus->new(
 116                                                 statusCode => STATUS_REDIRECTED(),
 117                                                 status => 'Disconnect on max requests' ) );
 118                         $session->kill_me;
 119                         return 1;
 120                 }
 121
 122                 if (ref $coderef) {
 123                         my @args = $app_msg->params;
 124                         my $appreq = OpenSRF::AppRequest->new( $session );
 125
 126                         $log->debug( "in_request = $in_request : [" . $appreq->threadTrace."]", INTERNAL );
 127                         if( $in_request ) {
 128                                 $log->debug( "Pushing onto pending requests: " . $appreq->threadTrace, DEBUG );
 129                                 push @pending_requests, [ $appreq, \@args, $coderef ];
 130                                 return 1;
 131                         }
 132
 133
 134                         $in_request++;
 135
 136                         $log->debug( "Executing coderef for {$method_name}", INTERNAL );
 137
 138                         my $resp;
 139                         try {
 140                                 # un-if(0) this block to enable param checking based on signature and argc
 141                                 if (0) {
 142                                         if (@args < $coderef->argc) {
 143                                                 die     "Not enough params passed to ".
 144                                                         $coderef->api_name." : requires ". $coderef->argc
 145                                         }
 146                                         if (@args) {
 147                                                 my $sig = $coderef->signature;
 148                                                 if ($sig && exists $sig->{params}) {
 149                                                         for my $p (0 .. scalar(@{ $sig->{params} }) - 1 ) {
 150                                                                 my $s = $sig->{params}->[$p];
 151                                                                 my $a = $args[$p];
 152                                                                 if ($s->{class} && OpenSRF::Utils::JSON->lookup_hint(ref $a) ne $s->{class}) {
 153                                                                         die "Incorrect param class at position $p : should be a '$$s{class}'";
 154                                                                 } elsif ($s->{type}) {
 155                                                                         if (lc($s->{type}) eq 'object' && $a !~ /HASH/o) {
 156                                                                                 die "Incorrect param type at position $p : should be an 'object'";
 157                                                                         } elsif (lc($s->{type}) eq 'array' && $a !~ /ARRAY/o) {
 158                                                                                 die "Incorrect param type at position $p : should be an 'array'";
 159                                                                         } elsif (lc($s->{type}) eq 'number' && (ref($a) || $a !~ /^-?\d+(?:\.\d+)?$/o)) {
 160                                                                                 die "Incorrect param type at position $p : should be a 'number'";
 161                                                                         } elsif (lc($s->{type}) eq 'string' && ref($a)) {
 162                                                                                 die "Incorrect param type at position $p : should be a 'string'";
 163                                                                         }
 164                                                                 }
 165                                                         }
 166                                                 }
 167                                         }
 168                                 }
 169
 170                                 my $start = time();
 171                                 $resp = $coderef->run( $appreq, @args);
 172                                 my $time = sprintf '%.3f', time() - $start;
 173
 174                                 $log->debug( "Method duration for [$method_name]:  ". $time );
 175                                 if( defined( $resp ) ) {
 176                                         $appreq->respond_complete( $resp );
 177                                 } else {
 178                                         $appreq->status( OpenSRF::DomainObject::oilsConnectStatus->new(
 179                                                                 statusCode => STATUS_COMPLETE(),
 180                                                                 status => 'Request Complete' ) );
 181                                 }
 182                         } catch Error with {
 183                                 my $e = shift;
 184                                 warn "Caught error from 'run' method: $e\n";
 185
 186                                 if(UNIVERSAL::isa($e,"Error")) {
 187                                         $e = $e->stringify();
 188                                 }
 189                                 my $sess_id = $session->session_id;
 190                                 $session->status(
 191                                         OpenSRF::DomainObject::oilsMethodException->new(
 192                                                         statusCode      => STATUS_INTERNALSERVERERROR(),
 193                                                         status          => " *** Call to [$method_name] failed for session ".
 194                                                                            "[$sess_id], thread trace ".
 195                                                                            "[".$appreq->threadTrace."]:\n$e\n"
 196                                         )
 197                                 );
 198                         };
 199
 200
 201
 202                         # ----------------------------------------------
 203
 204
 205                         # XXX may need this later
 206                         # $_->[1] = 1 for (@OpenSRF::AppSession::_CLIENT_CACHE);
 207
 208                         $in_request--;
 209
 210                         $log->debug( "Pending Requests: " . scalar(@pending_requests), INTERNAL );
 211
 212                         # cycle through queued requests
 213                         while( my $aref = shift @pending_requests ) {
 214                                 $in_request++;
 215                                 my $resp;
 216                                 try {
 217                                         # un-if(0) this block to enable param checking based on signature and argc
 218                                         if (0) {
 219                                                 if (@args < $aref->[2]->argc) {
 220                                                         die     "Not enough params passed to ".
 221                                                                 $aref->[2]->api_name." : requires ". $aref->[2]->argc
 222                                                 }
 223                                                 if (@args) {
 224                                                         my $sig = $aref->[2]->signature;
 225                                                         if ($sig && exists $sig->{params}) {
 226                                                                 for my $p (0 .. scalar(@{ $sig->{params} }) - 1 ) {
 227                                                                         my $s = $sig->{params}->[$p];
 228                                                                         my $a = $args[$p];
 229                                                                         if ($s->{class} && OpenSRF::Utils::JSON->lookup_hint(ref $a) ne $s->{class}) {
 230                                                                                 die "Incorrect param class at position $p : should be a '$$s{class}'";
 231                                                                         } elsif ($s->{type}) {
 232                                                                                 if (lc($s->{type}) eq 'object' && $a !~ /HASH/o) {
 233                                                                                         die "Incorrect param type at position $p : should be an 'object'";
 234                                                                                 } elsif (lc($s->{type}) eq 'array' && $a !~ /ARRAY/o) {
 235                                                                                         die "Incorrect param type at position $p : should be an 'array'";
 236                                                                                 } elsif (lc($s->{type}) eq 'number' && (ref($a) || $a !~ /^-?\d+(?:\.\d+)?$/o)) {
 237                                                                                         die "Incorrect param type at position $p : should be a 'number'";
 238                                                                                 } elsif (lc($s->{type}) eq 'string' && ref($a)) {
 239                                                                                         die "Incorrect param type at position $p : should be a 'string'";
 240                                                                                 }
 241                                                                         }
 242                                                                 }
 243                                                         }
 244                                                 }
 245                                         }
 246
 247                                         my $start = time;
 248                                         my $response = $aref->[2]->run( $aref->[0], @{$aref->[1]} );
 249                                         my $time = sprintf '%.3f', time - $start;
 250                                         $log->debug( "Method duration for [".$aref->[2]->api_name." -> ".join(', ',@{$aref->[1]}).']:  '.$time, DEBUG );
 251
 252                                         $appreq = $aref->[0];
 253                                         if( ref( $response ) ) {
 254                                                 $appreq->respond_complete( $response );
 255                                         } else {
 256                                                 $appreq->status( OpenSRF::DomainObject::oilsConnectStatus->new(
 257                                                                         statusCode => STATUS_COMPLETE(),
 258                                                                         status => 'Request Complete' ) );
 259                                         }
 260                                         $log->debug( "Executed: " . $appreq->threadTrace, INTERNAL );
 261                                 } catch Error with {
 262                                         my $e = shift;
 263                                         if(UNIVERSAL::isa($e,"Error")) {
 264                                                 $e = $e->stringify();
 265                                         }
 266                                         $session->status(
 267                                                 OpenSRF::DomainObject::oilsMethodException->new(
 268                                                                 statusCode => STATUS_INTERNALSERVERERROR(),
 269                                                                 status => "Call to [".$aref->[2]->api_name."] faild:  $e"
 270                                                 )
 271                                         );
 272                                 };
 273                                 $in_request--;
 274                         }
 275
 276                         return 1;
 277                 }
 278
 279                 $log->info("Received non-REQUEST message in Application handler");
 280
 281                 my $res = OpenSRF::DomainObject::oilsMethodException->new(
 282                                 status => "Received non-REQUEST message in Application handler");
 283                 $session->send('ERROR', $res);
 284                 $session->kill_me;
 285                 return 1;
 286
 287         } else {
 288                 $session->push_queue([ $app_msg, $session->last_threadTrace ]);
 289         }
 290
 291         $session->last_message_type('');
 292         $session->last_message_api_level('');
 293
 294         return 1;
 295 }
 296
 297 sub is_registered {
 298         my $self = shift;
 299         my $api_name = shift;
 300         my $api_level = shift || 1;
 301         return exists($_METHODS[$api_level]{$api_name});
 302 }
 303
 304
 305 sub normalize_whitespace {
 306         my $txt = shift;
 307
 308         $txt =~ s/^\s+//gso;
 309         $txt =~ s/\s+$//gso;
 310         $txt =~ s/\s+/ /gso;
 311         $txt =~ s/\n//gso;
 312         $txt =~ s/\. /\.  /gso;
 313
 314         return $txt;
 315 }
 316
 317 sub parse_string_signature {
 318         my $string = shift;
 319         return [] unless $string;
 320         my @chunks = split(/\@/so, $string);
 321
 322         my @params;
 323         my $ret;
 324         my $desc = '';
 325         for (@chunks) {
 326                 if (/^return (.+)$/so) {
 327                         $ret = [normalize_whitespace($1)];
 328                 } elsif (/^param (\w+) \b(.+)$/so) {
 329                         push @params, [ $1, normalize_whitespace($2) ];
 330                 } else {
 331                         $desc .= '@' if $desc;
 332                         $desc .= $_;
 333                 }
 334         }
 335
 336         return [normalize_whitespace($desc),\@params, $ret];
 337 }
 338
 339 sub parse_array_signature {
 340         my $array = shift;
 341         my ($d,$p,$r) = @$array;
 342         return {} unless ($d or $p or $r);
 343
 344         return {
 345                 desc    => $d,
 346                 params  => [
 347                         map {
 348                                 { name  => $$_[0],
 349                                   desc  => $$_[1],
 350                                   type  => $$_[2],
 351                                   class => $$_[3],
 352                                 }
 353                         } @$p
 354                 ],
 355                 'return'=>
 356                         { desc  => $$r[0],
 357                           type  => $$r[1],
 358                           class => $$r[2],
 359                         }
 360         };
 361 }
 362
 363 sub register_method {
 364         my $self = shift;
 365         my $app = ref($self) || $self;
 366         my %args = @_;
 367
 368
 369         throw OpenSRF::DomainObject::oilsMethodException unless ($args{method});
 370
 371         $args{api_level} = 1 unless(defined($args{api_level}));
 372         $args{stream} ||= 0;
 373         $args{remote} ||= 0;
 374         $args{argc} ||= 0;
 375         $args{package} ||= $app;
 376         $args{server_class} = server_class();
 377         $args{api_name} ||= $args{server_class} . '.' . $args{method};
 378
 379         # un-if(0) this block to enable signature parsing
 380         if (!$args{signature}) {
 381                 if ($args{notes} && !ref($args{notes})) {
 382                         $args{signature} =
 383                                 parse_array_signature( parse_string_signature( $args{notes} ) );
 384                 }
 385         } elsif( !ref($args{signature}) ) {
 386                 $args{signature} =
 387                         parse_array_signature( parse_string_signature( $args{signature} ) );
 388         } elsif( ref($args{signature}) eq 'ARRAY') {
 389                 $args{signature} =
 390                         parse_array_signature( $args{signature} );
 391         }
 392
 393         unless ($args{object_hint}) {
 394                 ($args{object_hint} = $args{package}) =~ s/::/_/go;
 395         }
 396
 397         OpenSRF::Utils::JSON->register_class_hint( name => $args{package}, hint => $args{object_hint}, type => "hash" );
 398
 399         $_METHODS[$args{api_level}]{$args{api_name}} = bless \%args => $app;
 400
 401         __PACKAGE__->register_method(
 402                 stream => 0,
 403                 argc => $args{argc},
 404                 api_name => $args{api_name}.'.atomic',
 405                 method => 'make_stream_atomic',
 406                 notes => "This is a system generated method.  Please see the definition for $args{api_name}",
 407         ) if ($args{stream});
 408 }
 409
 410 sub retrieve_remote_apis {
 411         my $method = shift;
 412         my $session = OpenSRF::AppSession->create('router');
 413         try {
 414                 $session->connect or OpenSRF::EX::WARN->throw("Connection to router timed out");
 415         } catch Error with {
 416                 my $e = shift;
 417                 $log->debug( "Remote subrequest returned an error:\n". $e );
 418                 return undef;
 419         } finally {
 420                 return undef unless ($session->state == $session->CONNECTED);
 421         };
 422
 423         my $req = $session->request( 'opensrf.router.info.class.list' );
 424         my $list = $req->recv;
 425
 426         if( UNIVERSAL::isa($list,"Error") ) {
 427                 throw $list;
 428         }
 429
 430         my $content = $list->content;
 431
 432         $req->finish;
 433         $session->finish;
 434         $session->disconnect;
 435
 436         my %u_list = map { ($_ => 1) } @$content;
 437
 438         for my $class ( keys %u_list ) {
 439                 next if($class eq $server_class);
 440                 populate_remote_method_cache($class, $method);
 441         }
 442 }
 443
 444 sub populate_remote_method_cache {
 445         my $class = shift;
 446         my $meth = shift;
 447
 448         my $session = OpenSRF::AppSession->create($class);
 449         try {
 450                 $session->connect or OpenSRF::EX::WARN->throw("Connection to $class timed out");
 451
 452                 my $call = 'opensrf.system.method.all' unless (defined $meth);
 453                 $call = 'opensrf.system.method' if (defined $meth);
 454
 455                 my $req = $session->request( $call, $meth );
 456
 457                 while (my $method = $req->recv) {
 458                         next if (UNIVERSAL::isa($method, 'Error'));
 459
 460                         $method = $method->content;
 461                         next if ( exists($_METHODS[$$method{api_level}]) &&
 462                                 exists($_METHODS[$$method{api_level}]{$$method{api_name}}) );
 463                         $method->{remote} = 1;
 464                         bless($method, __PACKAGE__ );
 465                         $_METHODS[$$method{api_level}]{$$method{api_name}} = $method;
 466                 }
 467
 468                 $req->finish;
 469                 $session->finish;
 470                 $session->disconnect;
 471
 472         } catch Error with {
 473                 my $e = shift;
 474                 $log->debug( "Remote subrequest returned an error:\n". $e );
 475                 return undef;
 476         };
 477 }
 478
 479 sub method_lookup {
 480         my $self = shift;
 481         my $method = shift;
 482         my $proto = shift;
 483         my $no_recurse = shift || 0;
 484         my $no_remote = shift || 0;
 485
 486         # this instead of " || 1;" above to allow api_level 0
 487         $proto = $self->api_level unless (defined $proto);
 488
 489         my $class = ref($self) || $self;
 490
 491         $log->debug("Lookup of [$method] by [$class] in api_level [$proto]", DEBUG);
 492         $log->debug("Available methods\n\t".join("\n\t", keys %{ $_METHODS[$proto] }), INTERNAL);
 493
 494         my $meth;
 495         if (__PACKAGE__->thunk) {
 496                 for my $p ( reverse(1 .. $proto) ) {
 497                         if (exists $_METHODS[$p]{$method}) {
 498                                 $meth = $_METHODS[$p]{$method};
 499                         }
 500                 }
 501         } else {
 502                 if (exists $_METHODS[$proto]{$method}) {
 503                         $meth = $_METHODS[$proto]{$method};
 504                 }
 505         }
 506
 507         if (defined $meth) {
 508                 if($no_remote and $meth->{remote}) {
 509                         $log->debug("OH CRAP We're not supposed to return remote methods", WARN);
 510                         return undef;
 511                 }
 512
 513         } elsif (!$no_recurse) {
 514                 $log->debug("We didn't find [$method], asking everyone else.", DEBUG);
 515                 retrieve_remote_apis($method);
 516                 $meth = $self->method_lookup($method,$proto,1);
 517         }
 518
 519         return $meth;
 520 }
 521
 522 sub run {
 523         my $self = shift;
 524         my $req = shift;
 525
 526         my $resp;
 527         my @params = @_;
 528
 529         if ( !UNIVERSAL::isa($req, 'OpenSRF::AppRequest') ) {
 530                 $log->debug("Creating a SubRequest object", DEBUG);
 531                 unshift @params, $req;
 532                 $req = OpenSRF::AppSubrequest->new;
 533         } else {
 534                 $log->debug("This is a top level request", DEBUG);
 535         }
 536
 537         if (!$self->{remote}) {
 538                 my $code = \&{$self->{package} . '::' . $self->{method}};
 539                 my $err = undef;
 540
 541                 try {
 542                         $resp = $code->($self, $req, @params);
 543
 544                 } catch Error with {
 545                         $err = shift;
 546
 547                         if( ref($self) eq 'HASH') {
 548                                 $log->error("Sub $$self{package}::$$self{method} DIED!!!\n\t$err\n", ERROR);
 549                         }
 550                 };
 551
 552                 if($err) {
 553                         if(UNIVERSAL::isa($err,"Error")) {
 554                                 throw $err;
 555                         } else {
 556                                 die $err->stringify;
 557                         }
 558                 }
 559
 560
 561                 $log->debug("Coderef for [$$self{package}::$$self{method}] has been run", DEBUG);
 562
 563                 if ( ref($req) and UNIVERSAL::isa($req, 'OpenSRF::AppSubrequest') ) {
 564                         $req->respond($resp) if (defined $resp);
 565                         $log->debug("SubRequest object is responding with : " . join(" ",$req->responses), DEBUG);
 566                         return $req->responses;
 567                 } else {
 568                         $log->debug("A top level Request object is responding $resp", DEBUG) if (defined $resp);
 569                         return $resp;
 570                 }
 571         } else {
 572                 my $session = OpenSRF::AppSession->create($self->{server_class});
 573                 try {
 574                         #$session->connect or OpenSRF::EX::WARN->throw("Connection to [$$self{server_class}] timed out");
 575                         my $remote_req = $session->request( $self->{api_name}, @params );
 576                         while (my $remote_resp = $remote_req->recv) {
 577                                 OpenSRF::Utils::Logger->debug("Remote Subrequest Received " . $remote_resp, INTERNAL );
 578                                 if( UNIVERSAL::isa($remote_resp,"Error") ) {
 579                                         throw $remote_resp;
 580                                 }
 581                                 $req->respond( $remote_resp->content );
 582                         }
 583                         $remote_req->finish();
 584
 585                 } catch Error with {
 586                         my $e = shift;
 587                         $log->debug( "Remote subrequest returned an error:\n". $e );
 588                         return undef;
 589                 };
 590
 591                 if ($session) {
 592                         $session->disconnect();
 593                         $session->finish();
 594                 }
 595
 596                 $log->debug( "Remote Subrequest Responses " . join(" ", $req->responses), INTERNAL );
 597
 598                 return $req->responses;
 599         }
 600         # huh? how'd we get here...
 601         return undef;
 602 }
 603
 604 sub introspect {
 605         my $self = shift;
 606         my $client = shift;
 607         my $method = shift;
 608         my $limit = shift;
 609         my $offset = shift;
 610
 611         if ($self->api_name =~ /all$/o) {
 612                 $offset = $limit;
 613                 $limit = $method;
 614                 $method = undef;
 615         }
 616
 617         my ($seen,$returned) = (0,0);
 618         for my $api_level ( reverse(1 .. $#_METHODS) ) {
 619                 for my $api_name ( sort keys %{$_METHODS[$api_level]} ) {
 620                         if (!$offset || $offset <= $seen) {
 621                                 if (!$_METHODS[$api_level]{$api_name}{remote}) {
 622                                         if (defined($method)) {
 623                                                 if ($api_name =~ $method) {
 624                                                         if (!$limit || $returned < $limit) {
 625                                                                 $client->respond( $_METHODS[$api_level]{$api_name} );
 626                                                                 $returned++;
 627                                                         }
 628                                                 }
 629                                         } else {
 630                                                 if (!$limit || $returned < $limit) {
 631                                                         $client->respond( $_METHODS[$api_level]{$api_name} );
 632                                                         $returned++;
 633                                                 }
 634                                         }
 635                                 }
 636                         }
 637                         $seen++;
 638                 }
 639         }
 640
 641         return undef;
 642 }
 643 __PACKAGE__->register_method(
 644         stream => 1,
 645         method => 'introspect',
 646         api_name => 'opensrf.system.method.all',
 647         argc => 0,
 648         signature => {
 649                 desc => q/This method is used to introspect an entire OpenSRF Application/,
 650                 return => {
 651                         desc => q/A stream of objects describing the methods available via this OpenSRF Application/,
 652                         type => 'object'
 653                 }
 654         },
 655 );
 656 __PACKAGE__->register_method(
 657         stream => 1,
 658         method => 'introspect',
 659         argc => 1,
 660         api_name => 'opensrf.system.method',
 661         argc => 1,
 662         signature => {
 663                 desc => q/Use this method to get the definition of a single OpenSRF Method/,
 664                 params => [
 665                         { desc => q/The method to introspect/,
 666                           type => 'string' },
 667                 ],
 668                 return => { desc => q/An object describing the method requested, or an error if it can't be found/,
 669                             type => 'object' }
 670         },
 671 );
 672
 673 sub echo_method {
 674         my $self = shift;
 675         my $client = shift;
 676         my @args = @_;
 677
 678         $client->respond( $_ ) for (@args);
 679         return undef;
 680 }
 681 __PACKAGE__->register_method(
 682         stream => 1,
 683         method => 'echo_method',
 684         argc => 1,
 685         api_name => 'opensrf.system.echo',
 686         signature => {
 687                 desc => q/A test method that will echo back it's arguments in a streaming response/,
 688                 params => [
 689                         { desc => q/One or more arguments to echo back/ }
 690                 ],
 691                 return => { desc => q/A stream of the arguments passed/ }
 692         },
 693 );
 694
 695 sub time_method {
 696         my( $self, $conn ) = @_;
 697         return CORE::time;
 698 }
 699 __PACKAGE__->register_method(
 700         method => 'time_method',
 701         argc => 0,
 702         api_name => 'opensrf.system.time',
 703         signature => {
 704                 desc => q/Returns the current system time as epoch seconds/,
 705                 return => { desc => q/epoch seconds/ }
 706         }
 707 );
 708
 709 sub make_stream_atomic {
 710         my $self = shift;
 711         my $req = shift;
 712         my @args = @_;
 713
 714         (my $m_name = $self->api_name) =~ s/\.atomic$//o;
 715         my @results = $self->method_lookup($m_name)->run(@args);
 716
 717         return \@results;
 718 }
 719
 720
 721 1;
 722
 723