/[cvs]/nfo/perl/libs/Data/Rap/Engine.pm
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revision 1.1 by joko, Tue Feb 18 15:35:25 2003 UTC revision 1.15 by joko, Wed Jun 16 16:37:59 2004 UTC
# Line 2  Line 2 
2  ##  $Id$  ##  $Id$
3  ## ----------------------------------------------------------------------  ## ----------------------------------------------------------------------
4  ##  $Log$  ##  $Log$
5    ##  Revision 1.15  2004/06/16 16:37:59  joko
6    ##  attempt to get things going in a generic way (Linux/FreeBSD/Win32)
7    ##
8    ##  Revision 1.14  2004/05/12 14:23:31  jonen
9    ##   add comment/code related to PERL5LIB var at different OS's
10    ##
11    ##  Revision 1.13  2003/12/05 05:02:08  joko
12    ##  + minor update: disabled some unnecessary loggers or changed to debug-level
13    ##
14    ##  Revision 1.12  2003/06/24 20:59:51  jonen
15    ##  added option 'detach'
16    ##
17    ##  Revision 1.11  2003/06/23 17:54:32  joko
18    ##  prepared execution of in-process perl-code via eval (not activated yet!)
19    ##
20    ##  Revision 1.10  2003/05/13 07:56:12  joko
21    ##  enhanced: *hierarchical* containers for context handling
22    ##  fixes: some pre-flight checks
23    ##  new: propagate "end-tag" event to e.g. close containers
24    ##
25    ##  Revision 1.9  2003/04/04 17:23:11  joko
26    ##  minor update: debugging output
27    ##
28    ##  Revision 1.8  2003/03/29 07:11:54  joko
29    ##  modified: sub run_executable
30    ##  new: sub run_script
31    ##
32    ##  Revision 1.7  2003/03/28 07:02:56  joko
33    ##  modified structure around '$wrapper_program'
34    ##
35    ##  Revision 1.6  2003/03/27 15:31:05  joko
36    ##  fixes to modules regarding new namespace(s) below Data::Mungle::*
37    ##
38    ##  Revision 1.5  2003/03/27 15:03:03  joko
39    ##  enhanced 'sub run_executable'
40    ##
41    ##  Revision 1.4  2003/02/22 16:51:21  joko
42    ##  + enhanced run_executable
43    ##  modified logging output
44    ##
45    ##  Revision 1.3  2003/02/21 01:46:17  joko
46    ##  renamed core function
47    ##
48    ##  Revision 1.2  2003/02/20 19:46:33  joko
49    ##  renamed and revamped some of modules
50    ##  renamed methods
51    ##  + sub run_executable
52    ##
53  ##  Revision 1.1  2003/02/18 15:35:25  joko  ##  Revision 1.1  2003/02/18 15:35:25  joko
54  ##  + initial commit  ##  + initial commit
55  ##  ##
# Line 15  use warnings; Line 63  use warnings;
63    
64    
65  use Data::Dumper;  use Data::Dumper;
 use Data::Transform::Deep qw( refexpr2perlref );  
 use Iterate;  
66  use Hash::Merge qw( merge );  use Hash::Merge qw( merge );
67    use Iterate;
68    
69    use shortcuts qw( run_cmd RUNNING_IN_HELL );
70    use Data::Mungle::Code::Ref qw( ref_slot );
71    use Data::Mungle::Transform::Deep qw( expand deep_copy );
72    use File::Temp qw/ tempfile tempdir /;
73    
74    my $DEBUG = 0;
75    
76  sub performTarget {  sub performTarget {
77    my $self = shift;    my $self = shift;
78    my $targetname = shift;    my $targetname = shift;
79    my $target = $self->getTargetMetadata($targetname);    $self->perform_target($targetname);
80    }
81    
82    sub perform_target {
83      my $self = shift;
84      my $targetname = shift;
85    
86      # pre-flight checks
87      if (!$targetname) {
88        $self->log("Target name empty. Please try to specify (e.g.) on the command line.", 'critical');
89        return;
90      }
91    
92      my $header = ("- " x 12) . "   " . $targetname . "   " . ("- " x 6);
93      
94      # V1
95      #$self->log("- " x 35, 'notice');
96      #$self->log("Performing Target '$targetname'.", 'notice');
97    
98      # V2
99      #$self->log($header, 'notice');
100    
101      # V3
102      #$self->log("- " x 20, 'info');
103      $self->log("Performing Target '$targetname'.", 'notice');
104    
105      #exit;
106    
107      my $target = $self->getTargetDetails($targetname);
108    
109    # trace    # trace
110      #print Dumper($target);      #print Dumper($target);
111      #exit;      #exit;
112            
113      $self->perform_dependencies($target);
114      $self->perform_details($target);
115      
116      return 1;
117    
118    }
119    
120    sub perform_dependencies {
121      my $self = shift;
122      my $target = shift;
123    # resolve dependencies (just run prior)    # resolve dependencies (just run prior)
124    if (my $targetname_dep = $target->{attrib}->{depends}) {    if (my $targetname_dep = $target->{attrib}->{depends}) {
125      $self->performTarget($targetname_dep);      my @targets = split(/,\s|,/, $targetname_dep);
126        #print Dumper(@targets);
127        #$self->perform($targetname_dep);
128        #delete $target->{attrib}->{depends};
129        foreach (@targets) {
130          if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
131            $self->perform_target($_);
132          }
133        }
134      delete $target->{attrib}->{depends};      delete $target->{attrib}->{depends};
135    }    }
136    }
137    
138    sub perform_details {
139      my $self = shift;
140      my $target = shift;
141      
142      #print Dumper($target);
143      #exit;
144      
145    foreach my $entry (@{$target->{content}}) {    foreach my $entry (@{$target->{content}}) {
146      my $command = $entry->{name};      my $command = $entry->{name};
147      my $args = $entry->{attrib};      my $args = $entry->{attrib};
148      $self->run_command($command, $args);      my $content = $entry->{content};
149        $self->perform_command($command, $args, $content, { warn => 1 } );
150        # check recursiveness
151        # new condition: don't recurse if node is flagged to have inline-args (2003-04-17)
152        my $has_inline_args = ($entry->{attrib}->{_args} && $entry->{attrib}->{_args} eq 'inline');
153        if ($entry->{content} && ref $entry->{content} && !$has_inline_args) {
154          $self->perform_details($entry);
155        }
156        # new of 2003-05-08
157        $command ||= '';
158        $self->perform_command($command . '_end', undef, undef, { warn => 0 } );
159    }    }
160  }  }
161    
162  sub rc {  sub rc {
163    my $self = shift;    my $self = shift;
164    return $self->run_command(@_);    return $self->perform_command(@_);
165  }  }
166    
167  sub run_command {  sub perform_command {
168    my $self = shift;    my $self = shift;
169    my $command = shift;    my $command = shift;
170        my $args_list = shift;
171      my $content = shift;
172      my $options = shift;
173    
174    if (!$command) {    if (!$command) {
175      $self->log("Command was empty!", 'warning');      $self->log("Command was empty!", 'debug') if $DEBUG;
176      return;      return;
177    }    }
178    
179      # FIXME: make '__PACKAGE__' go one level deeper properly!
180      $self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug') if $DEBUG;
181        
182    my $args_list = shift;    
183      # 1. make arguments from list of arguments(?)
184    
185    my $args = {};    my $args = {};
186    #print Dumper($args_list);    #print Dumper($args_list);
187    if ($args_list) {    if ($args_list) {
# Line 68  sub run_command { Line 193  sub run_command {
193        $args = $args_list;        $args = $args_list;
194      }      }
195    }    }
196    $command = '_' . $command;    
197    if ($self->can($command)) {    
198      $self->$command($args);    # 2. prepare command
199      
200      # default setting for internal rap commands
201      my $method_prefix_default = '_';
202      # setting from property database
203      my $method_prefix_setting = $self->get_property('core.method_prefix');
204      #print "setting: ", $method_prefix_setting, "\n";
205      my $prefix = $method_prefix_setting;
206      if (not defined $prefix) {
207        $prefix = $method_prefix_default;
208      }
209      $command = $prefix . $command;
210      
211      
212      # 3. determine container
213      my $container; # = $self->getInstance();
214      #$container ||= $self->getInstance();
215      $container ||= $self;
216      
217      # 4. run method
218      if ($container->can($command)) {
219        $container->$command($args, $content);
220    } else {    } else {
221      $self->log("Command \"$command\" not implemented.", "warning");      my $level = "debug";
222        $level = "warning" if $options->{warn};
223        $self->log("Command '$command' not implemented.", $level) if $DEBUG;
224    }    }
225      
226  }  }
227    
 sub set_property {  
   my $self = shift;  
   my $args = shift;  
228    
229    my $name;  sub merge_properties {
230    my $value;    my $self = shift;
231        my $name = shift;
232    if (ref $args) {    my $data = shift;
     $self->interpolate($args) ;  
     $name = $args->{name};  
     $value = $args->{value};  
233    
234    } else {    $self->log("merge-name: $name");
235      $name = $args;    #print "name: $name", "\n";
236      $value = shift;    #print Dumper($data);
237    }    #exit;
238    
239    # check if slot (or childs of it) is/are already occupied    # check if slot (or childs of it) is/are already occupied
240    if (my $oldvalue = refexpr2perlref($self, $name, undef, '.')) {    #if (my $data_old = ref_slot($self, $name, undef, '.')) {
241      if (my $data_old = $self->get_property($name)) {
242        #print "old:", "\n";
243        #print Dumper($data_old);
244        
245      # FIXME: review - any options for 'merge' here?      # FIXME: review - any options for 'merge' here?
246      $value = merge($oldvalue, $value);      my $data_new = merge($data_old, $data);
247        #print "DATA NEE! - MERGE!", "\n";
248        #print Dumper($data_new);
249        #exit;
250        #merge_to($self, $data_new);
251        $self->set_property( { name => $name, value => $data_new } );
252        
253      } else {
254    
255    =pod    
256        # make up a dummy hash matching the structure of the destination one
257          my $dummy = {};
258          ref_slot($dummy, $name, $data, '.');
259          print Dumper($dummy);
260        
261        # mix into destination
262          mixin($self, $dummy, { init => 1 });
263    =cut
264    
265          ref_slot($self, $name, $data, '.');
266    
267    }    }
268      
269      
270      #print Dumper($self);
271      #exit;
272      #$self->
273    
274    }
275    
276    sub set_property {
277      my $self = shift;
278      my $args = shift;
279    
280      $self->interpolate($args) ;
281      my $name = $args->{name};
282      my $value = $args->{value};
283      $name = '__rap.properties.' . $name;
284    
285      $self->log("set-name: $name");
286    
287      #print Dumper($name, $value, '.');
288    
289    # fill property slot with given value    # fill property slot with given value
290    if ($value) {    # fix (2003-04-17): always do fill if value is *defined*!!!
291      refexpr2perlref($self, $name, $value, '.');    if (defined $value) {
292        ref_slot($self, $name, $value, '.');
293    }    }
294        
295      #print Dumper($self);
296      
297    # FIXME!!!    # FIXME!!!
298    return if ! ref $args;    #return if ! ref $args;
299    
300    # fill property slot with (probably bigger) data structure from property-/configuration-style - file    # fill property slot with (probably bigger) data structure from property-/configuration-style - file
301    if (my $file = $args->{file}) {    if (my $file = $args->{file}) {
# Line 123  sub set_property { Line 313  sub set_property {
313      }      }
314    
315    } elsif (my $command = $args->{command}) {    } elsif (my $command = $args->{command}) {
316      $self->run_command($command, $args);      $self->perform_command($command, $args);
317        
318    }    }
319    
# Line 137  sub get_property { Line 327  sub get_property {
327    #$self->interpolate($args);    #$self->interpolate($args);
328    
329    #my $name = $args->{name};    #my $name = $args->{name};
330      my $result;
331    
332      if (!$name) {
333        $self->log( __PACKAGE__ . ": no name!", 'critical');
334        
335      } elsif ($name eq '/') {
336        $result = expand($self);
337    
338      } elsif ($name eq '.') {
339        if (my $instance = $self->getInstance()) {
340          $result = expand($instance);
341        } else {
342          $result = ref_slot($self, '__rap.properties', undef, '.');
343          
344        }
345    
346      } else {
347    
348    # get property slot and return value      $name = '__rap.properties.' . $name;
349    return refexpr2perlref($self, $name, undef, '.');      
350        $self->log("get-name: $name") if $DEBUG;
351        
352        # get property slot and return value
353        $result = ref_slot($self, $name, undef, '.');
354        
355        # FIXME: Is this okay? It's provided for now in order not
356        # to deliver an 'undef' to the regex below inside 'interpolate'.
357        # revamp this, maybe!
358        #$result ||= '';    # NO!!!
359      }
360        
361      return $result;
362  }  }
363    
364  sub interpolate {  sub interpolate {
# Line 152  sub interpolate { Line 370  sub interpolate {
370    }    }
371  }  }
372    
373    sub run_executable {
374      my $self = shift;
375      my $opts = shift;
376    
377      my $meta = deep_copy($opts);
378    
379      delete $opts->{caption};
380      delete $opts->{async};
381      delete $opts->{detach};
382    
383      #print Dumper($meta);
384    
385      if ($opts->{executable}) {
386    
387        my $program = $opts->{executable};
388        delete $opts->{executable};
389    
390        # determine execution method
391        my $wrapper_program = '';
392        
393        # check if program is a namespace-string (contains '::') - use 'do' in this case!
394        if ($program =~ /::/) {
395          #$wrapper_program = 'rap.pl';
396          $wrapper_program = $0;
397        }
398    
399        # prepare arguments
400        my @buf;
401        foreach (keys %$opts) {
402          my $value = $opts->{$_};
403          if (m/^_/) {
404            if ($_ eq '_switches') {
405              my @switches = split(/,\s|,/, $value);
406              foreach my $switch (@switches) {
407                push @buf, '--' . $switch;
408              }
409            }
410            next;
411          }
412          
413          if ($value =~ /\s/) {
414            $value = "\"$value\"";
415          }
416          push @buf, "--$_=$value";
417        }
418    
419        # build {program} & {arguments}  
420        my $cmd = ($wrapper_program ? $wrapper_program . ' ' : '') . $program . ' ' . join(' ', @buf);
421        
422        # trace
423          #print "command: $cmd", "\n";
424        
425        # start process
426          # 2004-05-11 - seems like only ONE args is valid at PERL5LIB, so we use V2!
427          # 2004-06-16 - found out delimiter required for PERL5LIB, reverting back to V1!
428          
429          # V1: join all args
430          my $delimiter = ':';
431          $delimiter = ';' if RUNNING_IN_HELL();
432          $ENV{PERL5LIB} = join($delimiter, @INC);
433          # V2: insert only FIRST arg
434          #$ENV{PERL5LIB} = $INC[0];
435          # WARNING: at (free)BSD our var is the SECOND, NOT FIRST!!
436          # FIXME!! Do this in an abstract way!!
437          #$ENV{PERL5LIB} = $INC[1];
438          
439          #print Dumper(%ENV);
440          
441          #print "command: '$cmd'", "\n";
442    
443          # V1 - basic
444          #run_cmd($cmd);
445    
446          # V1.b - enhanced: variable local method
447          $meta->{caption} ||= '';
448          $meta->{async} ||= 0;
449          $meta->{detach} ||= 0;
450          # new of 2003-05-08: USE_PATH!
451          $meta->{USE_PATH} ||= 0;
452          my $evalstr = "run_cmd('$cmd', '$meta->{caption}', { async => $meta->{async}, detach => $meta->{detach}, USE_PATH => $meta->{USE_PATH} });";
453          eval($evalstr);
454          #my $res = do "$cmd";
455          #print $res, "\n" if $res;
456    
457          #$self->log("run_executable: $evalstr", 'info');
458          $self->raiseException("run_executable: $evalstr\n$@") if $@;
459    
460          # V2: via IPC::Run
461          # ....  (TODO)
462          
463        
464      }
465      
466    }
467    
468    
469    sub run_script {
470    
471      my $self = shift;
472      my $args = shift;
473      my $code = shift;
474    
475      if ($args->{language} eq 'msdos/bat') {
476        
477        #print "code: $code", "\n";
478        
479        # reporting
480        $self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
481        $self->log("\n<code>\n$code\n</code>", 'info');
482        
483        # create temporary intermediate file to execute code
484        my $tmpdir = '/tmp/rap';
485        mkdir $tmpdir;
486        (my $fh, my $filename) = tempfile( DIR => $tmpdir, SUFFIX => '.bat' );
487        print $fh $code, "\n";
488        run_cmd( $filename, '', { async => 1 } );
489        
490        # FIXME: DELETE code inside temp-files as soon as possible!
491        #print $fh '';
492        
493        # TODO: delete FILE completely!
494        # required for this: wait until execution has finished, then unlink....
495        # but: "how to wait until execution is finished"?
496        # i believe the best is to spawn *another* process directly from here,
497        # let's call it 'watcher-agent'.
498        # This one should monitor a certain running process and delete its
499        # executable file after it has finished execution.
500        # Possible extensions could be:
501        #   keep track of all stuff sent to STDOUT or STDERR and
502        #   send that stuff to the task-owner indirectly (not via shell/console)
503        #   (e.g. via email, by posting report to a newsgroup or publishing on a specified web-page: use mod-dav!)
504        
505      } elsif ($args->{language} eq 'bash') {
506        $self->log("FIXME: - - - - - -- - - --  BASH -  - -    -  - -   -    --   - ", 'error');
507    
508      } elsif ($args->{language} eq 'perl') {
509        
510        # reporting
511        #$self->log("Executing some arbitrary unsigned code (probably unsafe). [language=$args->{language}]", 'info');
512        #$self->log("\n<code>\n$code\n</code>", 'info');
513        
514        # do it
515        #eval($code);
516        #$self->log("\n<code>\n$code\n</code>", 'error') if $@;
517        
518      } else {
519        $self->log("FIXME: Script language '$args->{language}' not implemented.", 'error');
520        
521      }
522    
523    }
524    
525  1;  1;
526  __END__  __END__
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