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## ---------------------------------------------------------------------- |
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## $Id: Engine.pm,v 1.11 2003/06/23 17:54:32 joko Exp $ |
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## ---------------------------------------------------------------------- |
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## $Log: Engine.pm,v $ |
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## Revision 1.11 2003/06/23 17:54:32 joko |
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## prepared execution of in-process perl-code via eval (not activated yet!) |
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## |
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## Revision 1.10 2003/05/13 07:56:12 joko |
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## enhanced: *hierarchical* containers for context handling |
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## fixes: some pre-flight checks |
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## new: propagate "end-tag" event to e.g. close containers |
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## |
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## Revision 1.9 2003/04/04 17:23:11 joko |
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## minor update: debugging output |
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## |
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## Revision 1.8 2003/03/29 07:11:54 joko |
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## modified: sub run_executable |
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## new: sub run_script |
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## |
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## Revision 1.7 2003/03/28 07:02:56 joko |
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## modified structure around '$wrapper_program' |
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## |
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## Revision 1.6 2003/03/27 15:31:05 joko |
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## fixes to modules regarding new namespace(s) below Data::Mungle::* |
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## |
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## Revision 1.5 2003/03/27 15:03:03 joko |
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## enhanced 'sub run_executable' |
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## |
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## Revision 1.4 2003/02/22 16:51:21 joko |
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## + enhanced run_executable |
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## modified logging output |
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## |
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## Revision 1.3 2003/02/21 01:46:17 joko |
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## renamed core function |
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## |
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## Revision 1.2 2003/02/20 19:46:33 joko |
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## renamed and revamped some of modules |
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## renamed methods |
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## + sub run_executable |
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## |
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## Revision 1.1 2003/02/18 15:35:25 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::Engine; |
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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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use Iterate; |
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|
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use shortcuts qw( run_cmd ); |
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use Data::Mungle::Code::Ref qw( ref_slot ); |
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use Data::Mungle::Transform::Deep qw( expand deep_copy ); |
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use File::Temp qw/ tempfile tempdir /; |
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|
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|
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sub performTarget { |
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my $self = shift; |
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my $targetname = shift; |
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$self->perform_target($targetname); |
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} |
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|
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sub perform_target { |
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my $self = shift; |
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my $targetname = shift; |
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|
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# pre-flight checks |
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if (!$targetname) { |
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$self->log("Target name empty. Please try to specify (e.g.) on the command line.", 'critical'); |
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return; |
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} |
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|
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my $header = ("- " x 12) . " " . $targetname . " " . ("- " x 6); |
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|
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# V1 |
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#$self->log("- " x 35, 'notice'); |
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#$self->log("Performing Target '$targetname'.", 'notice'); |
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|
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# V2 |
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#$self->log($header, 'notice'); |
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|
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# V3 |
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$self->log("- " x 20, 'info'); |
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$self->log("Performing Target '$targetname'.", 'notice'); |
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|
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#exit; |
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|
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my $target = $self->getTargetDetails($targetname); |
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|
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# trace |
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#print Dumper($target); |
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#exit; |
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|
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$self->perform_dependencies($target); |
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$self->perform_details($target); |
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|
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return 1; |
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|
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} |
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|
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sub perform_dependencies { |
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my $self = shift; |
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my $target = shift; |
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# resolve dependencies (just run prior) |
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if (my $targetname_dep = $target->{attrib}->{depends}) { |
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my @targets = split(/,\s|,/, $targetname_dep); |
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#print Dumper(@targets); |
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#$self->perform($targetname_dep); |
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#delete $target->{attrib}->{depends}; |
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foreach (@targets) { |
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if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) { |
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$self->perform_target($_); |
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} |
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} |
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delete $target->{attrib}->{depends}; |
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} |
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} |
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|
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sub perform_details { |
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my $self = shift; |
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my $target = shift; |
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|
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#print Dumper($target); |
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#exit; |
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|
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foreach my $entry (@{$target->{content}}) { |
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my $command = $entry->{name}; |
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my $args = $entry->{attrib}; |
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my $content = $entry->{content}; |
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$self->perform_command($command, $args, $content, { warn => 1 } ); |
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# check recursiveness |
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# new condition: don't recurse if node is flagged to have inline-args (2003-04-17) |
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my $has_inline_args = ($entry->{attrib}->{_args} && $entry->{attrib}->{_args} eq 'inline'); |
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if ($entry->{content} && ref $entry->{content} && !$has_inline_args) { |
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$self->perform_details($entry); |
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} |
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# new of 2003-05-08 |
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$command ||= ''; |
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$self->perform_command($command . '_end', undef, undef, { warn => 0 } ); |
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} |
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} |
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|
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sub rc { |
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my $self = shift; |
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return $self->perform_command(@_); |
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} |
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|
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sub perform_command { |
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my $self = shift; |
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my $command = shift; |
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my $args_list = shift; |
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my $content = shift; |
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my $options = shift; |
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|
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if (!$command) { |
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$self->log("Command was empty!", 'debug'); |
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return; |
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} |
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|
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# FIXME: make '__PACKAGE__' go one level deeper properly! |
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$self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug'); |
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|
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|
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# 1. make arguments from list of arguments(?) |
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|
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my $args = {}; |
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#print Dumper($args_list); |
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if ($args_list) { |
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if (ref $args_list eq 'ARRAY') { |
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foreach (@$args_list) { |
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$args = merge($args, $_); |
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} |
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} else { |
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$args = $args_list; |
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} |
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} |
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|
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|
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# 2. prepare command |
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|
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# default setting for internal rap commands |
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my $method_prefix_default = '_'; |
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# setting from property database |
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my $method_prefix_setting = $self->get_property('core.method_prefix'); |
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#print "setting: ", $method_prefix_setting, "\n"; |
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my $prefix = $method_prefix_setting; |
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if (not defined $prefix) { |
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$prefix = $method_prefix_default; |
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} |
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$command = $prefix . $command; |
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|
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|
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# 3. determine container |
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my $container; # = $self->getInstance(); |
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#$container ||= $self->getInstance(); |
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$container ||= $self; |
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|
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# 4. run method |
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if ($container->can($command)) { |
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$container->$command($args, $content); |
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} else { |
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my $level = "debug"; |
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$level = "warning" if $options->{warn}; |
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$self->log("Command '$command' not implemented.", $level); |
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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 merge_properties { |
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my $self = shift; |
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my $name = shift; |
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my $data = shift; |
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|
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$self->log("merge-name: $name"); |
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#print "name: $name", "\n"; |
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#print Dumper($data); |
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#exit; |
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|
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# check if slot (or childs of it) is/are already occupied |
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#if (my $data_old = ref_slot($self, $name, undef, '.')) { |
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if (my $data_old = $self->get_property($name)) { |
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#print "old:", "\n"; |
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#print Dumper($data_old); |
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|
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# FIXME: review - any options for 'merge' here? |
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my $data_new = merge($data_old, $data); |
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#print "DATA NEE! - MERGE!", "\n"; |
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#print Dumper($data_new); |
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#exit; |
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#merge_to($self, $data_new); |
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$self->set_property( { name => $name, value => $data_new } ); |
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|
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} else { |
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|
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=pod |
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# make up a dummy hash matching the structure of the destination one |
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my $dummy = {}; |
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ref_slot($dummy, $name, $data, '.'); |
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print Dumper($dummy); |
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|
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# mix into destination |
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mixin($self, $dummy, { init => 1 }); |
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=cut |
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|
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ref_slot($self, $name, $data, '.'); |
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|
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} |
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|
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|
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#print Dumper($self); |
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#exit; |
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#$self-> |
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|
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} |
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|
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sub set_property { |
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my $self = shift; |
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my $args = shift; |
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|
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$self->interpolate($args) ; |
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my $name = $args->{name}; |
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my $value = $args->{value}; |
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$name = '__rap.properties.' . $name; |
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|
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$self->log("set-name: $name"); |
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|
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#print Dumper($name, $value, '.'); |
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|
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# fill property slot with given value |
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# fix (2003-04-17): always do fill if value is *defined*!!! |
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if (defined $value) { |
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ref_slot($self, $name, $value, '.'); |
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} |
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|
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#print Dumper($self); |
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|
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# FIXME!!! |
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#return if ! ref $args; |
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|
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# fill property slot with (probably bigger) data structure from property-/configuration-style - file |
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if (my $file = $args->{file}) { |
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my $type = $args->{type}; |
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if (!$type) { |
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die("default file (no type specified) is not implemented yet!"); |
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|
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} elsif ($type eq 'perl-eval') { |
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#die($type); |
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$self->loadFromPerlFile($file, $name, $args->{'varnames'}); |
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|
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} elsif ($type eq 'App::Config') { |
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die("not implemented: $type"); |
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|
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} |
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|
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} elsif (my $command = $args->{command}) { |
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$self->perform_command($command, $args); |
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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 get_property { |
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my $self = shift; |
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#my $args = shift; |
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my $name = shift; |
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|
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#$self->interpolate($args); |
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|
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#my $name = $args->{name}; |
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my $result; |
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|
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if (!$name) { |
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$self->log( __PACKAGE__ . ": no name!", 'critical'); |
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|
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} elsif ($name eq '/') { |
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$result = expand($self); |
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|
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} elsif ($name eq '.') { |
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if (my $instance = $self->getInstance()) { |
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$result = expand($instance); |
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} else { |
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$result = ref_slot($self, '__rap.properties', undef, '.'); |
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|
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} |
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|
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} else { |
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|
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$name = '__rap.properties.' . $name; |
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|
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$self->log("get-name: $name"); |
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|
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# get property slot and return value |
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$result = ref_slot($self, $name, undef, '.'); |
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|
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# FIXME: Is this okay? It's provided for now in order not |
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# to deliver an 'undef' to the regex below inside 'interpolate'. |
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# revamp this, maybe! |
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#$result ||= ''; # NO!!! |
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} |
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|
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return $result; |
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} |
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|
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sub interpolate { |
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my $self = shift; |
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my $ref = shift; |
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IterHash %$ref, sub { |
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#print $_[1], "\n"; |
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$_[1] =~ s/\${(.+)}/$self->get_property($1)/e; |
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} |
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} |
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|
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sub run_executable { |
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my $self = shift; |
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my $opts = shift; |
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|
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my $meta = deep_copy($opts); |
| 365 |
|
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delete $opts->{caption}; |
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delete $opts->{async}; |
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delete $opts->{detach}; |
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|
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#print Dumper($meta); |
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|
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if ($opts->{executable}) { |
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|
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my $program = $opts->{executable}; |
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delete $opts->{executable}; |
| 376 |
|
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# determine execution method |
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my $wrapper_program = ''; |
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|
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# check if program is a namespace-string (contains '::') - use 'do' in this case! |
| 381 |
if ($program =~ /::/) { |
| 382 |
#$wrapper_program = 'rap.pl'; |
| 383 |
$wrapper_program = $0; |
| 384 |
} |
| 385 |
|
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# prepare arguments |
| 387 |
my @buf; |
| 388 |
foreach (keys %$opts) { |
| 389 |
my $value = $opts->{$_}; |
| 390 |
if (m/^_/) { |
| 391 |
if ($_ eq '_switches') { |
| 392 |
my @switches = split(/,\s|,/, $value); |
| 393 |
foreach my $switch (@switches) { |
| 394 |
push @buf, '--' . $switch; |
| 395 |
} |
| 396 |
} |
| 397 |
next; |
| 398 |
} |
| 399 |
|
| 400 |
if ($value =~ /\s/) { |
| 401 |
$value = "\"$value\""; |
| 402 |
} |
| 403 |
push @buf, "--$_=$value"; |
| 404 |
} |
| 405 |
|
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# build {program} & {arguments} |
| 407 |
my $cmd = ($wrapper_program ? $wrapper_program . ' ' : '') . $program . ' ' . join(' ', @buf); |
| 408 |
|
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# trace |
| 410 |
#print "command: $cmd", "\n"; |
| 411 |
|
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# start process |
| 413 |
# V1: via shortcut |
| 414 |
#$ENV{PERL5LIB} = join(' ', @INC); |
| 415 |
|
| 416 |
# FIXME!!! what about the other slots of @INC? |
| 417 |
$ENV{PERL5LIB} = $INC[0]; |
| 418 |
|
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#print Dumper(%ENV); |
| 420 |
|
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#print "command: '$cmd'", "\n"; |
| 422 |
|
| 423 |
# V1 - basic |
| 424 |
#run_cmd($cmd); |
| 425 |
|
| 426 |
# V1.b - enhanced: variable local method |
| 427 |
$meta->{caption} ||= ''; |
| 428 |
$meta->{async} ||= 0; |
| 429 |
$meta->{detach} ||= 0; |
| 430 |
# new of 2003-05-08: USE_PATH! |
| 431 |
$meta->{USE_PATH} ||= 0; |
| 432 |
my $evalstr = "run_cmd('$cmd', '$meta->{caption}', { async => $meta->{async}, detach => $meta->{detach}, USE_PATH => $meta->{USE_PATH} });"; |
| 433 |
eval($evalstr); |
| 434 |
#my $res = do "$cmd"; |
| 435 |
#print $res, "\n" if $res; |
| 436 |
|
| 437 |
#$self->log("run_executable: $evalstr", 'info'); |
| 438 |
$self->raiseException("run_executable: $evalstr\n$@") if $@; |
| 439 |
|
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# V2: via IPC::Run |
| 441 |
# .... (TODO) |
| 442 |
|
| 443 |
|
| 444 |
} |
| 445 |
|
| 446 |
} |
| 447 |
|
| 448 |
|
| 449 |
sub run_script { |
| 450 |
|
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my $self = shift; |
| 452 |
my $args = shift; |
| 453 |
my $code = shift; |
| 454 |
|
| 455 |
if ($args->{language} eq 'msdos/bat') { |
| 456 |
|
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#print "code: $code", "\n"; |
| 458 |
|
| 459 |
# reporting |
| 460 |
$self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info'); |
| 461 |
$self->log("\n<code>\n$code\n</code>", 'info'); |
| 462 |
|
| 463 |
# create temporary intermediate file to execute code |
| 464 |
my $tmpdir = '/tmp/rap'; |
| 465 |
mkdir $tmpdir; |
| 466 |
(my $fh, my $filename) = tempfile( DIR => $tmpdir, SUFFIX => '.bat' ); |
| 467 |
print $fh $code, "\n"; |
| 468 |
run_cmd( $filename, '', { async => 1 } ); |
| 469 |
|
| 470 |
# FIXME: DELETE code inside temp-files as soon as possible! |
| 471 |
#print $fh ''; |
| 472 |
|
| 473 |
# TODO: delete FILE completely! |
| 474 |
# required for this: wait until execution has finished, then unlink.... |
| 475 |
# but: "how to wait until execution is finished"? |
| 476 |
# i believe the best is to spawn *another* process directly from here, |
| 477 |
# let's call it 'watcher-agent'. |
| 478 |
# This one should monitor a certain running process and delete its |
| 479 |
# executable file after it has finished execution. |
| 480 |
# Possible extensions could be: |
| 481 |
# keep track of all stuff sent to STDOUT or STDERR and |
| 482 |
# send that stuff to the task-owner indirectly (not via shell/console) |
| 483 |
# (e.g. via email, by posting report to a newsgroup or publishing on a specified web-page: use mod-dav!) |
| 484 |
|
| 485 |
} elsif ($args->{language} eq 'bash') { |
| 486 |
$self->log("FIXME: - - - - - -- - - -- BASH - - - - - - - -- - ", 'error'); |
| 487 |
|
| 488 |
} elsif ($args->{language} eq 'perl') { |
| 489 |
|
| 490 |
# reporting |
| 491 |
#$self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info'); |
| 492 |
#$self->log("\n<code>\n$code\n</code>", 'info'); |
| 493 |
|
| 494 |
# do it |
| 495 |
#eval($code); |
| 496 |
#$self->log("\n<code>\n$code\n</code>", 'error') if $@; |
| 497 |
|
| 498 |
} else { |
| 499 |
$self->log("FIXME: Script language '$args->{language}' not implemented.", 'error'); |
| 500 |
|
| 501 |
} |
| 502 |
|
| 503 |
} |
| 504 |
|
| 505 |
1; |
| 506 |
__END__ |
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