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## ---------------------------------------------------------------------- |
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## $Id: Command.pm,v 1.7 2003/05/13 07:52:14 joko Exp $ |
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## ---------------------------------------------------------------------- |
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## $Log: Command.pm,v $ |
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## Revision 1.7 2003/05/13 07:52:14 joko |
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## enhanced: *hierarchical* containers for context handling |
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## making methods from foreign context(s) available |
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## started: import of targets from foreign topics |
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## |
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## Revision 1.6 2003/03/29 07:10:42 joko |
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## + sub _script: |
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## new rap-command: '<script language="msdos/bat|bash|...">...</script>' |
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## |
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## Revision 1.5 2003/03/27 15:31:04 joko |
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## fixes to modules regarding new namespace(s) below Data::Mungle::* |
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## |
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## Revision 1.4 2003/02/22 16:48:58 joko |
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## modified rapcall behaviour |
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## |
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## Revision 1.3 2003/02/21 07:39:13 joko |
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## modified 'rapcall' processing |
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## modified merging of options/arguments in there |
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## |
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## Revision 1.2 2003/02/20 19:37:09 joko |
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## renamed modules |
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## - removed command 'exec' |
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## + enhanced command 'rapcall' - now handles various different modes and behaviours |
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## renamed methods |
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## + command 'exit' |
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## + command 'use' - switch to foreign namespaces using contexts |
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## |
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## Revision 1.1 2003/02/18 15:35:06 joko |
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## + initial commit |
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## |
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## ---------------------------------------------------------------------- |
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|
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|
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package Data::Rap::Command; |
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|
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use strict; |
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use warnings; |
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|
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|
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use Data::Dumper; |
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use Hash::Merge qw( merge ); |
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|
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use DesignPattern::Object; |
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use Data::Mungle::Transform::Deep qw( merge_to ); |
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use shortcuts qw( run_cmd ); |
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|
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|
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sub _echo { |
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my $self = shift; |
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my $args = shift; |
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#print Dumper($args); |
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my $message; |
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my $level; |
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|
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if (ref $args eq 'HASH') { |
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$message = $args->{message}; |
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$level = $args->{level}; |
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} else { |
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my @buf = (); |
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push @buf, $args; |
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push @buf, @_; |
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$message = join(' ', @buf); |
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} |
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|
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$message ||= 'n/a'; |
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$level ||= 'info'; |
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|
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$self->log($message, $level); |
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} |
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|
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sub _context { |
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my $self = shift; |
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my $args = shift; |
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print "_context-args: ", Dumper($args); |
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foreach my $task_command (keys %$args) { |
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my $bunch = $args->{$task_command}; |
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foreach my $task_args (@$bunch) { |
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#print Dumper($task_args); |
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$self->perform_command($task_command, $task_args); |
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} |
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} |
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} |
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|
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# FIXME |
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sub _id {} |
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|
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# FIXME |
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sub _description {} |
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|
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# NEW [2003-05-08]: Hierarchical handling (stack push/pop instead of set/get). |
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# TODO: Named Containers. |
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sub _container { |
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my $self = shift; |
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my $args = shift; |
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$self->pushContainer($args); |
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} |
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|
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sub _container_end { |
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my $self = shift; |
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my $args = shift; |
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$self->popContainer(); |
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} |
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|
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sub _sync { |
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my $self = shift; |
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my $args = shift; |
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|
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#print Dumper($args); |
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|
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# V1 |
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#$bizProcess->runSync($task); |
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|
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#V2 |
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my $container = $self->getInstance(); |
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$container ||= $self; |
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$container->runSync($args); |
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|
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} |
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|
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sub _depends_old { |
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my $self = shift; |
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my $args = shift; |
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#print Dumper($args); |
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$self->performTarget($args); |
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} |
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|
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sub _dump { |
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my $self = shift; |
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my $args = shift; |
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my $name = $args->{name}; |
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my $message = Dumper($self->get_property($name)); |
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$self->rc('echo', "\n" . $message, $args->{level}); |
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} |
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|
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|
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sub _plugin { |
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my $self = shift; |
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my $args = shift; |
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my $content = shift; |
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|
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if (my $instance = $args->{instance}) { |
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#$self->{$instance} = DesignPattern::Object->fromPackage($args->{module}); |
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my $object = DesignPattern::Object->fromPackage($args->{module}); |
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#$self->{$instance} |
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#print Dumper($object); |
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#$object->constructor() if $object->can('constructor'); |
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|
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} elsif (my $name = $args->{name}) { |
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|
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# 1. namespaces - load module into current scope or foreign namespace? |
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my $container; |
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if (my $namespace = $args->{namespace}) { |
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|
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$self->log("Loading plugin '$name' into foreign namespace '$namespace'.", 'info'); |
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|
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eval qq{ |
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|
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# 0. pre-flight check|trace |
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#print "YAI"; |
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#$self->log('YAIYAI', 'info'); # FIXME! |
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|
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# 1. work in foreign namespace |
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package $namespace; |
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use strict; |
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use warnings; |
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# 2. mungle with/the |
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# - package namespace (llp) |
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# - object (lloo) |
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# - inheritance (lloo) |
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# - plugin (hlf) |
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# symbols for scopes: |
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# - llp = low-level perl |
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# - lloo = low-level oo |
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# - hlf = high-level framework |
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# bless larry for perl having this implemented in an orthogonal way |
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# 2.1: behaviour=coerce |
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#use base qw( $name ); |
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# 2.2: behaviour=plugin |
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use base qw( DesignPattern::Bridge ); |
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1; |
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}; |
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$self->checkExceptions(); |
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$container = $namespace->new(); |
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|
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} elsif (my $instance = $self->getInstance()) { |
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$self->log("Loading plugin '$name' into foreign namespace of instance '" . (ref $instance) . "'.", 'info'); |
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$container = $instance; |
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|
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} else { |
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#$self->log("Loading plugin '$name' into local scope's namespace (ref \$self='" . (ref $self) . "').", 'info'); |
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$self->log("Loading plugin '$name' into local namespace '" . (ref $self) . "'.", 'info'); |
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$container = $self; |
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} |
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|
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# 1.b. intermediate checks |
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if (!$container) { |
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$self->log("No container to load '$name' into!", 'warning'); |
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return; |
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} |
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|
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# 1.c. inheritance of (e.g.) properties |
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if (my $inherit = $args->{inherit}) { |
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my $properties = $self->get_property($inherit); |
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merge_to($container, { $inherit => $properties }, { init => 1 } ); |
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} |
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|
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# 2. plugin - load module into container |
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$container->load($name); |
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|
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# 3. methods - run object methods |
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|
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# payload inside $content is the $args to the $method |
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# convert xml-style payload inside $content to trivial (not-nested) perl hash |
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# using just encapsulated text of the nodes as hash values |
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my $method_args; |
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foreach (@$content) { |
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my $key = $_->{name}; |
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my $value = $_->{content}->[0]->{content}; |
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$method_args->{$key} = $value; |
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} |
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# convert hashref to arrayref |
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$method_args = [ %$method_args ] if ref $method_args eq 'HASH'; |
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|
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if (my $methods = $args->{methods}) { |
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my @methods = split(/,|,\s/, $methods); |
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foreach (@methods) { |
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$self->log("Running method '$_'.", 'info'); |
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#print Dumper($method_args); |
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# check for existance of method |
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if ($container->can($_)) { |
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# dispatch call by being with or without arguments |
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print "method_args: ", Dumper($method_args); |
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if ($method_args) { |
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$container->$_(@$method_args); |
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} else { |
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$container->$_(); |
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} |
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} |
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} |
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} |
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|
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# 4. instances - create references in local scope |
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if (my $instances = $args->{instances}) { |
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my @instances = split(/,|,\s/, $instances); |
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foreach (@instances) { |
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$self->log("Creating instance '$_'.", 'info'); |
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$self->{$_} = $container; |
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} |
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} |
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|
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|
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} |
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} |
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|
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sub _rapcall { |
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my $self = shift; |
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my $args = shift; |
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|
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# merge container arguments to local ones if desired/requested/forced |
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if (my $container = $self->getContainer()) { |
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#my $opts = merge($container, $args); |
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#print Dumper($container); |
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merge_to($args, $container, { init => 1 }); |
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} |
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|
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# trace |
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#print Dumper($args); |
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|
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# action dispatcher, either do: |
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# - run an executable program [ext] |
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# - call a command (?) [rap] |
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# - a rap target [rap] |
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# - a code method [ext] |
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|
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if ($args->{executable}) { |
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$self->run_executable($args); |
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return; |
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} |
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|
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if (my $command = $args->{command}) { |
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$self->perform_command($command, $args); |
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return; |
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} |
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|
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if (my $target = $args->{target}) { |
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$self->performTarget($target, $args); |
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return; |
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} |
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|
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if (my $method = $args->{method}) { |
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#$self->performTarget($target, $args); |
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if (my $refkey = $args->{base}) { |
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#eval($namespace . '::' . $method . '();'); |
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#die($@) if $@; |
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#print Dumper($self); |
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|
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#if ($args->{args} && lc $args->{args} eq 'array') { |
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#print Dumper($args); |
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#print Dumper($self); |
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#} |
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|
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# V1 - no arguments were being propagated |
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#$self->{$refkey}->$method(); |
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# V2 - trying this.... |
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$self->{$refkey}->$method($args->{args}); |
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|
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} elsif (my $ref = $self->getInstance()) { |
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$ref->$method($args->{args}); |
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} |
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|
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return; |
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|
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} |
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|
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} |
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|
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sub _exit { |
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exit; |
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} |
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|
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sub _use { |
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my $self = shift; |
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my $args = shift; |
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|
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# new of ~2003-04-15: making methods from foreign context(s) available |
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if (my $name = $args->{name}) { |
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$args->{type} ||= ''; |
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$self->log("Switching to $args->{type} '$name'.", 'info'); |
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$self->setInstance($self->{$name}) if $args->{type} eq 'instance'; |
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} |
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|
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# new of ~2003-04-15: making methods from foreign context(s) available |
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if (exists $args->{method_prefix}) { |
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#print "YAI", "\n"; |
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#print Dumper($args); |
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$self->set_property( { name => 'core.method_prefix', value => $args->{method_prefix} } ); |
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} |
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|
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# TODO: (possible feature) |
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# check for $args->{export_rap_commands} to export core rap-commands |
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# from rap engine's scope to the worker's |
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|
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} |
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|
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sub _script { |
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my $self = shift; |
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my $args = shift; |
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my $content = shift; |
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|
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# trace |
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#print Dumper($args); |
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#print Dumper($content); |
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|
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my $code = $content->[0]->{content}; |
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$code ||= ''; |
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|
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$self->run_script($args, $code); |
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|
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} |
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|
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sub _import { |
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my $self = shift; |
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my $args = shift; |
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#my $content = shift; |
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|
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if (!$args->{topic}) { |
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$self->log("Please specify topic.", 'warning'); |
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return; |
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} |
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|
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$self->log("Importing all targets from topic '$args->{topic}'.", 'info'); |
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|
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#print Dumper($self); |
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# FIXME: This was started off, but not finished! |
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print "registry: ", Dumper($Data::Rap::registry); |
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|
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} |
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|
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1; |
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__END__ |
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