/[cvs]/nfo/perl/libs/Data/Rap/Engine.pm
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revision 1.2 by joko, Thu Feb 20 19:46:33 2003 UTC revision 1.14 by jonen, Wed May 12 14:23:31 2004 UTC
# Line 2  Line 2 
2  ##  $Id$  ##  $Id$
3  ## ----------------------------------------------------------------------  ## ----------------------------------------------------------------------
4  ##  $Log$  ##  $Log$
5    ##  Revision 1.14  2004/05/12 14:23:31  jonen
6    ##  add comment/code related to PERL5LIB var at different OS's
7    ##
8    ##  Revision 1.13  2003/12/05 05:02:08  joko
9    ##  + minor update: disabled some unnecessary loggers or changed to debug-level
10    ##
11    ##  Revision 1.12  2003/06/24 20:59:51  jonen
12    ##  added option 'detach'
13    ##
14    ##  Revision 1.11  2003/06/23 17:54:32  joko
15    ##  prepared execution of in-process perl-code via eval (not activated yet!)
16    ##
17    ##  Revision 1.10  2003/05/13 07:56:12  joko
18    ##  enhanced: *hierarchical* containers for context handling
19    ##  fixes: some pre-flight checks
20    ##  new: propagate "end-tag" event to e.g. close containers
21    ##
22    ##  Revision 1.9  2003/04/04 17:23:11  joko
23    ##  minor update: debugging output
24    ##
25    ##  Revision 1.8  2003/03/29 07:11:54  joko
26    ##  modified: sub run_executable
27    ##  new: sub run_script
28    ##
29    ##  Revision 1.7  2003/03/28 07:02:56  joko
30    ##  modified structure around '$wrapper_program'
31    ##
32    ##  Revision 1.6  2003/03/27 15:31:05  joko
33    ##  fixes to modules regarding new namespace(s) below Data::Mungle::*
34    ##
35    ##  Revision 1.5  2003/03/27 15:03:03  joko
36    ##  enhanced 'sub run_executable'
37    ##
38    ##  Revision 1.4  2003/02/22 16:51:21  joko
39    ##  + enhanced run_executable
40    ##  modified logging output
41    ##
42    ##  Revision 1.3  2003/02/21 01:46:17  joko
43    ##  renamed core function
44    ##
45  ##  Revision 1.2  2003/02/20 19:46:33  joko  ##  Revision 1.2  2003/02/20 19:46:33  joko
46  ##  renamed and revamped some of modules  ##  renamed and revamped some of modules
47  ##  renamed methods  ##  renamed methods
# Line 24  use Hash::Merge qw( merge ); Line 64  use Hash::Merge qw( merge );
64  use Iterate;  use Iterate;
65    
66  use shortcuts qw( run_cmd );  use shortcuts qw( run_cmd );
67  use Data::Code::Ref qw( ref_slot );  use Data::Mungle::Code::Ref qw( ref_slot );
68  use Data::Transform::Deep qw( expand );  use Data::Mungle::Transform::Deep qw( expand deep_copy );
69    use File::Temp qw/ tempfile tempdir /;
70    
71    my $DEBUG = 0;
72    
73  sub performTarget {  sub performTarget {
74    my $self = shift;    my $self = shift;
# Line 38  sub perform_target { Line 80  sub perform_target {
80    my $self = shift;    my $self = shift;
81    my $targetname = shift;    my $targetname = shift;
82    
83      # pre-flight checks
84      if (!$targetname) {
85        $self->log("Target name empty. Please try to specify (e.g.) on the command line.", 'critical');
86        return;
87      }
88    
89      my $header = ("- " x 12) . "   " . $targetname . "   " . ("- " x 6);
90      
91      # V1
92      #$self->log("- " x 35, 'notice');
93      #$self->log("Performing Target '$targetname'.", 'notice');
94    
95      # V2
96      #$self->log($header, 'notice');
97    
98      # V3
99      #$self->log("- " x 20, 'info');
100    $self->log("Performing Target '$targetname'.", 'notice');    $self->log("Performing Target '$targetname'.", 'notice');
101    
102    #exit;    #exit;
# Line 50  sub perform_target { Line 109  sub perform_target {
109            
110    $self->perform_dependencies($target);    $self->perform_dependencies($target);
111    $self->perform_details($target);    $self->perform_details($target);
112      
113      return 1;
114    
115  }  }
116    
# Line 81  sub perform_details { Line 142  sub perform_details {
142    foreach my $entry (@{$target->{content}}) {    foreach my $entry (@{$target->{content}}) {
143      my $command = $entry->{name};      my $command = $entry->{name};
144      my $args = $entry->{attrib};      my $args = $entry->{attrib};
145      $self->perform_command($command, $args);      my $content = $entry->{content};
146        $self->perform_command($command, $args, $content, { warn => 1 } );
147      # check recursiveness      # check recursiveness
148      if ($entry->{content} && ref $entry->{content}) {      # new condition: don't recurse if node is flagged to have inline-args (2003-04-17)
149        my $has_inline_args = ($entry->{attrib}->{_args} && $entry->{attrib}->{_args} eq 'inline');
150        if ($entry->{content} && ref $entry->{content} && !$has_inline_args) {
151        $self->perform_details($entry);        $self->perform_details($entry);
152      }      }
153        # new of 2003-05-08
154        $command ||= '';
155        $self->perform_command($command . '_end', undef, undef, { warn => 0 } );
156    }    }
157  }  }
158    
# Line 97  sub rc { Line 164  sub rc {
164  sub perform_command {  sub perform_command {
165    my $self = shift;    my $self = shift;
166    my $command = shift;    my $command = shift;
167      my $args_list = shift;
168      my $content = shift;
169      my $options = shift;
170    
171    if (!$command) {    if (!$command) {
172      $self->log("Command was empty!", 'warning');      $self->log("Command was empty!", 'debug') if $DEBUG;
173      return;      return;
174    }    }
175    
176    # FIXME: make '__PACKAGE__' go one level deeper properly!    # FIXME: make '__PACKAGE__' go one level deeper properly!
177    $self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug');    $self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug') if $DEBUG;
178        
179    my $args_list = shift;    
180      # 1. make arguments from list of arguments(?)
181    
182    my $args = {};    my $args = {};
183    #print Dumper($args_list);    #print Dumper($args_list);
184    if ($args_list) {    if ($args_list) {
# Line 118  sub perform_command { Line 190  sub perform_command {
190        $args = $args_list;        $args = $args_list;
191      }      }
192    }    }
   $command = '_' . $command;  
193        
194        
195    # determine container    # 2. prepare command
196      
197      # default setting for internal rap commands
198      my $method_prefix_default = '_';
199      # setting from property database
200      my $method_prefix_setting = $self->get_property('core.method_prefix');
201      #print "setting: ", $method_prefix_setting, "\n";
202      my $prefix = $method_prefix_setting;
203      if (not defined $prefix) {
204        $prefix = $method_prefix_default;
205      }
206      $command = $prefix . $command;
207      
208      
209      # 3. determine container
210    my $container; # = $self->getInstance();    my $container; # = $self->getInstance();
211      #$container ||= $self->getInstance();
212    $container ||= $self;    $container ||= $self;
213        
214      # 4. run method
215    if ($container->can($command)) {    if ($container->can($command)) {
216      $container->$command($args);      $container->$command($args, $content);
217    } else {    } else {
218      $self->log("Command '$command' not implemented.", "warning");      my $level = "debug";
219        $level = "warning" if $options->{warn};
220        $self->log("Command '$command' not implemented.", $level) if $DEBUG;
221    }    }
222        
223  }  }
# Line 155  sub merge_properties { Line 244  sub merge_properties {
244      #print "DATA NEE! - MERGE!", "\n";      #print "DATA NEE! - MERGE!", "\n";
245      #print Dumper($data_new);      #print Dumper($data_new);
246      #exit;      #exit;
247      #hash2object($self, $data_new);      #merge_to($self, $data_new);
248      $self->set_property( { name => $name, value => $data_new } );      $self->set_property( { name => $name, value => $data_new } );
249            
250    } else {    } else {
# Line 192  sub set_property { Line 281  sub set_property {
281    
282    $self->log("set-name: $name");    $self->log("set-name: $name");
283    
284      #print Dumper($name, $value, '.');
285    
286    # fill property slot with given value    # fill property slot with given value
287    if ($value) {    # fix (2003-04-17): always do fill if value is *defined*!!!
288      if (defined $value) {
289      ref_slot($self, $name, $value, '.');      ref_slot($self, $name, $value, '.');
290    }    }
291        
# Line 252  sub get_property { Line 344  sub get_property {
344    
345      $name = '__rap.properties.' . $name;      $name = '__rap.properties.' . $name;
346            
347      $self->log("get-name: $name");      $self->log("get-name: $name") if $DEBUG;
348            
349      # get property slot and return value      # get property slot and return value
350      $result = ref_slot($self, $name, undef, '.');      $result = ref_slot($self, $name, undef, '.');
# Line 279  sub run_executable { Line 371  sub run_executable {
371    my $self = shift;    my $self = shift;
372    my $opts = shift;    my $opts = shift;
373    
374      my $meta = deep_copy($opts);
375    
376      delete $opts->{caption};
377      delete $opts->{async};
378      delete $opts->{detach};
379    
380      #print Dumper($meta);
381    
382    if ($opts->{executable}) {    if ($opts->{executable}) {
383    
384      my $program = $opts->{executable};      my $program = $opts->{executable};
385      delete $opts->{executable};      delete $opts->{executable};
386    
387        # determine execution method
388        my $wrapper_program = '';
389        
390        # check if program is a namespace-string (contains '::') - use 'do' in this case!
391        if ($program =~ /::/) {
392          #$wrapper_program = 'rap.pl';
393          $wrapper_program = $0;
394        }
395    
396        # prepare arguments
397      my @buf;      my @buf;
398      foreach (keys %$opts) {      foreach (keys %$opts) {
399        my $value = $opts->{$_};        my $value = $opts->{$_};
400          if (m/^_/) {
401            if ($_ eq '_switches') {
402              my @switches = split(/,\s|,/, $value);
403              foreach my $switch (@switches) {
404                push @buf, '--' . $switch;
405              }
406            }
407            next;
408          }
409          
410        if ($value =~ /\s/) {        if ($value =~ /\s/) {
411          $value = "\"$value\"";          $value = "\"$value\"";
412        }        }
413        push @buf, "--$_=$value";        push @buf, "--$_=$value";
414      }      }
415      
416      my $cmd = $program . ' ' . join(' ', @buf);      # build {program} & {arguments}  
417        my $cmd = ($wrapper_program ? $wrapper_program . ' ' : '') . $program . ' ' . join(' ', @buf);
418            
419      # trace      # trace
420        #print "command: $cmd", "\n";        #print "command: $cmd", "\n";
421            
422      # start process      # start process
423        # V1: via shortcut        # 2004-05-11 - seems like only ONE args is valid at PERL5LIB,
424        #$ENV{PERL5LIB} = join(' ', @INC);        #     so we use V2!
425                # V1: join all args
426        # FIXME!!! what about the other slots of @INC?        #$ENV{PERL5LIB} = join(' ', @INC);      
427          # V2: insert only FIRST arg
428        $ENV{PERL5LIB} = $INC[0];        $ENV{PERL5LIB} = $INC[0];
429          # WARNING: at (free)BSD our var is the SECOND, NOT FIRST!!
430          # FIXME!! Do this in an abstract way!!
431          #$ENV{PERL5LIB} = $INC[1];
432                
433        #print Dumper(%ENV);        #print Dumper(%ENV);
434        run_cmd($cmd);        
435          #print "command: '$cmd'", "\n";
436    
437          # V1 - basic
438          #run_cmd($cmd);
439    
440          # V1.b - enhanced: variable local method
441          $meta->{caption} ||= '';
442          $meta->{async} ||= 0;
443          $meta->{detach} ||= 0;
444          # new of 2003-05-08: USE_PATH!
445          $meta->{USE_PATH} ||= 0;
446          my $evalstr = "run_cmd('$cmd', '$meta->{caption}', { async => $meta->{async}, detach => $meta->{detach}, USE_PATH => $meta->{USE_PATH} });";
447          eval($evalstr);
448          #my $res = do "$cmd";
449          #print $res, "\n" if $res;
450    
451          #$self->log("run_executable: $evalstr", 'info');
452          $self->raiseException("run_executable: $evalstr\n$@") if $@;
453    
454        # V2: via IPC::Run        # V2: via IPC::Run
455        # ....  (TODO)        # ....  (TODO)
456              
457            
458    }    }
459        
460  }  }
461    
462    
463    sub run_script {
464    
465      my $self = shift;
466      my $args = shift;
467      my $code = shift;
468    
469      if ($args->{language} eq 'msdos/bat') {
470        
471        #print "code: $code", "\n";
472        
473        # reporting
474        $self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
475        $self->log("\n<code>\n$code\n</code>", 'info');
476        
477        # create temporary intermediate file to execute code
478        my $tmpdir = '/tmp/rap';
479        mkdir $tmpdir;
480        (my $fh, my $filename) = tempfile( DIR => $tmpdir, SUFFIX => '.bat' );
481        print $fh $code, "\n";
482        run_cmd( $filename, '', { async => 1 } );
483        
484        # FIXME: DELETE code inside temp-files as soon as possible!
485        #print $fh '';
486        
487        # TODO: delete FILE completely!
488        # required for this: wait until execution has finished, then unlink....
489        # but: "how to wait until execution is finished"?
490        # i believe the best is to spawn *another* process directly from here,
491        # let's call it 'watcher-agent'.
492        # This one should monitor a certain running process and delete its
493        # executable file after it has finished execution.
494        # Possible extensions could be:
495        #   keep track of all stuff sent to STDOUT or STDERR and
496        #   send that stuff to the task-owner indirectly (not via shell/console)
497        #   (e.g. via email, by posting report to a newsgroup or publishing on a specified web-page: use mod-dav!)
498        
499      } elsif ($args->{language} eq 'bash') {
500        $self->log("FIXME: - - - - - -- - - --  BASH -  - -    -  - -   -    --   - ", 'error');
501    
502      } elsif ($args->{language} eq 'perl') {
503        
504        # reporting
505        #$self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
506        #$self->log("\n<code>\n$code\n</code>", 'info');
507        
508        # do it
509        #eval($code);
510        #$self->log("\n<code>\n$code\n</code>", 'error') if $@;
511        
512      } else {
513        $self->log("FIXME: Script language '$args->{language}' not implemented.", 'error');
514        
515      }
516    
517    }
518    
519  1;  1;
520  __END__  __END__
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