src/perlmods/OpenSRF/Application.pm

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