Data/Rap/Engine.pm

## ----------------------------------------------------------------------
##  $Id: Engine.pm,v 1.4 2003/02/22 16:51:21 joko Exp $
## ----------------------------------------------------------------------
##  $Log: Engine.pm,v $
##  Revision 1.4  2003/02/22 16:51:21  joko
##  + enhanced run_executable
##  modified logging output
##
##  Revision 1.3  2003/02/21 01:46:17  joko
##  renamed core function
##
##  Revision 1.2  2003/02/20 19:46:33  joko
##  renamed and revamped some of modules
##  renamed methods
##  + sub run_executable
##
##  Revision 1.1  2003/02/18 15:35:25  joko
##  + initial commit
##
## ----------------------------------------------------------------------


package Data::Rap::Engine;

use strict;
use warnings;


use Data::Dumper;
use Hash::Merge qw( merge );
use Iterate;

use shortcuts qw( run_cmd );
use Data::Code::Ref qw( ref_slot );
use Data::Transform::Deep qw( expand );


sub performTarget {
  my $self = shift;
  my $targetname = shift;
  $self->perform_target($targetname);
}

sub perform_target {
  my $self = shift;
  my $targetname = shift;

  my $header = ("- " x 12) . "   " . $targetname . "   " . ("- " x 6);
  
  #$self->log("- " x 35, 'notice');
  #$self->log("Performing Target '$targetname'.", 'notice');

  $self->log($header, 'notice');

  #exit;

  my $target = $self->getTargetDetails($targetname);

  # trace
    #print Dumper($target);
    #exit;
    
  $self->perform_dependencies($target);
  $self->perform_details($target);

}

sub perform_dependencies {
  my $self = shift;
  my $target = shift;
  # resolve dependencies (just run prior)
  if (my $targetname_dep = $target->{attrib}->{depends}) {
    my @targets = split(/,\s|,/, $targetname_dep);
    #print Dumper(@targets);
    #$self->perform($targetname_dep);
    #delete $target->{attrib}->{depends};
    foreach (@targets) {
      if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
        $self->perform_target($_);
      }
    }
    delete $target->{attrib}->{depends};
  }
}

sub perform_details {
  my $self = shift;
  my $target = shift;
  
  #print Dumper($target);
  #exit;
  
  foreach my $entry (@{$target->{content}}) {
    my $command = $entry->{name};
    my $args = $entry->{attrib};
    $self->perform_command($command, $args);
    # check recursiveness
    if ($entry->{content} && ref $entry->{content}) {
      $self->perform_details($entry);
    }
  }
}

sub rc {
  my $self = shift;
  return $self->perform_command(@_);
}

sub perform_command {
  my $self = shift;
  my $command = shift;

  if (!$command) {
    $self->log("Command was empty!", 'debug');
    return;
  }

  # FIXME: make '__PACKAGE__' go one level deeper properly!
  $self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug');
  
  my $args_list = shift;
  my $args = {};
  #print Dumper($args_list);
  if ($args_list) {
    if (ref $args_list eq 'ARRAY') {
      foreach (@$args_list) {
        $args = merge($args, $_);
      }
    } else {
      $args = $args_list;
    }
  }
  $command = '_' . $command;
  
  
  # determine container
  my $container; # = $self->getInstance();
  $container ||= $self;
  
  if ($container->can($command)) {
    $container->$command($args);
  } else {
    $self->log("Command '$command' not implemented.", "warning");
  }
  
}


sub merge_properties {
  my $self = shift;
  my $name = shift;
  my $data = shift;

  $self->log("merge-name: $name");
  #print "name: $name", "\n";
  #print Dumper($data);
  #exit;

  # check if slot (or childs of it) is/are already occupied
  #if (my $data_old = ref_slot($self, $name, undef, '.')) {
  if (my $data_old = $self->get_property($name)) {
    #print "old:", "\n";
    #print Dumper($data_old);
    
    # FIXME: review - any options for 'merge' here?
    my $data_new = merge($data_old, $data);
    #print "DATA NEE! - MERGE!", "\n";
    #print Dumper($data_new);
    #exit;
    #merge_to($self, $data_new);
    $self->set_property( { name => $name, value => $data_new } );
    
  } else {

=pod    
    # make up a dummy hash matching the structure of the destination one
      my $dummy = {};
      ref_slot($dummy, $name, $data, '.');
      print Dumper($dummy);
    
    # mix into destination
      mixin($self, $dummy, { init => 1 });
=cut

      ref_slot($self, $name, $data, '.');

  }
  
  
  #print Dumper($self);
  #exit;
  #$self->

}

sub set_property {
  my $self = shift;
  my $args = shift;

  $self->interpolate($args) ;
  my $name = $args->{name};
  my $value = $args->{value};
  $name = '__rap.properties.' . $name;

  $self->log("set-name: $name");

  # fill property slot with given value
  if ($value) {
    ref_slot($self, $name, $value, '.');
  }
  
  #print Dumper($self);
  
  # FIXME!!!
  #return if ! ref $args;

  # fill property slot with (probably bigger) data structure from property-/configuration-style - file
  if (my $file = $args->{file}) {
    my $type = $args->{type};
    if (!$type) {
      die("default file (no type specified) is not implemented yet!");
    
    } elsif ($type eq 'perl-eval') {
      #die($type);
      $self->loadFromPerlFile($file, $name, $args->{'varnames'});
      
    } elsif ($type eq 'App::Config') {
      die("not implemented: $type");
      
    }

  } elsif (my $command = $args->{command}) {
    $self->perform_command($command, $args);
  
  }

}

sub get_property {
  my $self = shift;
  #my $args = shift;
  my $name = shift;

  #$self->interpolate($args);

  #my $name = $args->{name};
  my $result;

  if (!$name) {
    $self->log( __PACKAGE__ . ": no name!", 'critical');
    
  } elsif ($name eq '/') {
    $result = expand($self);

  } elsif ($name eq '.') {
    if (my $instance = $self->getInstance()) {
      $result = expand($instance);
    } else {
      $result = ref_slot($self, '__rap.properties', undef, '.');
      
    }

  } else {

    $name = '__rap.properties.' . $name;
    
    $self->log("get-name: $name");
    
    # get property slot and return value
    $result = ref_slot($self, $name, undef, '.');
    
    # FIXME: Is this okay? It's provided for now in order not
    # to deliver an 'undef' to the regex below inside 'interpolate'.
    # revamp this, maybe!
    #$result ||= '';    # NO!!!
  }
  
  return $result;
}

sub interpolate {
  my $self = shift;
  my $ref = shift;
  IterHash %$ref, sub {
    #print $_[1], "\n";
    $_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
  }
}

sub run_executable {
  my $self = shift;
  my $opts = shift;

  if ($opts->{executable}) {

    my $program = $opts->{executable};
    delete $opts->{executable};

    # determine execution method
    my $method = 'run_cmd';
    my $wrapper_program = '';
    
    # check if program is a namespace-string (contains '::') - use 'do' in this case!
    if ($program =~ /::/) {
    #if ($program =~ s/::/\\/g) {
      #$program = '.\\' . $program;
      #$method = 'require';
      #do "$program";
      #return;
      #$method = 'rap.';
      
      $wrapper_program = 'rap.pl';
      
    }

    # prepare arguments
    my @buf;
    foreach (keys %$opts) {
      my $value = $opts->{$_};
      if (m/^_/) {
        if ($_ eq '_switches') {
          my @switches = split(/,\s|,/, $value);
          foreach my $switch (@switches) {
            push @buf, '--' . $switch;
          }
        }
        next;
      }
      
      if ($value =~ /\s/) {
        $value = "\"$value\"";
      }
      push @buf, "--$_=$value";
    }

    # build {program} & {arguments}  
    my $cmd = join(' ', $wrapper_program, $program) . ' ' . join(' ', @buf);
    
    # trace
      #print "command: $cmd", "\n";
    
    # start process
      # V1: via shortcut
      #$ENV{PERL5LIB} = join(' ', @INC);
      
      # FIXME!!! what about the other slots of @INC?
      $ENV{PERL5LIB} = $INC[0];
      
      #print Dumper(%ENV);
      
      print "command: '$cmd'", "\n";

      # V1 - basic
      #run_cmd($cmd);

      # V1.b - enhanced: variable local method
      my $evalstr = "$method('$cmd');";
      eval($evalstr);
      #my $res = do "$cmd";
      #print $res, "\n" if $res;

      #$self->log("run_executable: $evalstr", 'info');
      $self->raiseException("run_executable: $evalstr\n$@") if $@;

      # V2: via IPC::Run
      # ....  (TODO)
    
    
  }
  
}


1;
__END__
1	joko	1.1	## ----------------------------------------------------------------------
2	joko	1.5	## $Id: Engine.pm,v 1.4 2003/02/22 16:51:21 joko Exp $
3	joko	1.1	## ----------------------------------------------------------------------
4	joko	1.2	## $Log: Engine.pm,v $
5	joko	1.5	## Revision 1.4 2003/02/22 16:51:21 joko
6			## + enhanced run_executable
7			## modified logging output
8			##
9	joko	1.4	## Revision 1.3 2003/02/21 01:46:17 joko
10			## renamed core function
11			##
12	joko	1.3	## Revision 1.2 2003/02/20 19:46:33 joko
13			## renamed and revamped some of modules
14			## renamed methods
15			## + sub run_executable
16			##
17	joko	1.2	## Revision 1.1 2003/02/18 15:35:25 joko
18			## + initial commit
19			##
20	joko	1.1	## ----------------------------------------------------------------------
21
22
23			package Data::Rap::Engine;
24
25			use strict;
26			use warnings;
27
28
29			use Data::Dumper;
30	joko	1.2	use Hash::Merge qw( merge );
31	joko	1.1	use Iterate;
32	joko	1.2
33			use shortcuts qw( run_cmd );
34			use Data::Code::Ref qw( ref_slot );
35			use Data::Transform::Deep qw( expand );
36	joko	1.1
37
38			sub performTarget {
39			my $self = shift;
40			my $targetname = shift;
41	joko	1.2	$self->perform_target($targetname);
42			}
43
44			sub perform_target {
45			my $self = shift;
46			my $targetname = shift;
47
48	joko	1.4	my $header = ("- " x 12) . " " . $targetname . " " . ("- " x 6);
49
50			#$self->log("- " x 35, 'notice');
51			#$self->log("Performing Target '$targetname'.", 'notice');
52
53			$self->log($header, 'notice');
54	joko	1.2
55			#exit;
56
57			my $target = $self->getTargetDetails($targetname);
58	joko	1.1
59			# trace
60			#print Dumper($target);
61			#exit;
62
63	joko	1.2	$self->perform_dependencies($target);
64			$self->perform_details($target);
65
66			}
67
68			sub perform_dependencies {
69			my $self = shift;
70			my $target = shift;
71	joko	1.1	# resolve dependencies (just run prior)
72			if (my $targetname_dep = $target->{attrib}->{depends}) {
73	joko	1.2	my @targets = split(/,\s\|,/, $targetname_dep);
74			#print Dumper(@targets);
75			#$self->perform($targetname_dep);
76			#delete $target->{attrib}->{depends};
77			foreach (@targets) {
78			if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
79			$self->perform_target($_);
80			}
81			}
82	joko	1.1	delete $target->{attrib}->{depends};
83			}
84	joko	1.2	}
85	joko	1.1
86	joko	1.2	sub perform_details {
87			my $self = shift;
88			my $target = shift;
89
90			#print Dumper($target);
91			#exit;
92
93	joko	1.1	foreach my $entry (@{$target->{content}}) {
94			my $command = $entry->{name};
95			my $args = $entry->{attrib};
96	joko	1.2	$self->perform_command($command, $args);
97			# check recursiveness
98			if ($entry->{content} && ref $entry->{content}) {
99			$self->perform_details($entry);
100			}
101	joko	1.1	}
102			}
103
104			sub rc {
105			my $self = shift;
106	joko	1.2	return $self->perform_command(@_);
107	joko	1.1	}
108
109	joko	1.2	sub perform_command {
110	joko	1.1	my $self = shift;
111			my $command = shift;
112	joko	1.2
113	joko	1.1	if (!$command) {
114	joko	1.4	$self->log("Command was empty!", 'debug');
115	joko	1.1	return;
116			}
117	joko	1.2
118			# FIXME: make '__PACKAGE__' go one level deeper properly!
119			$self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug');
120	joko	1.1
121			my $args_list = shift;
122			my $args = {};
123			#print Dumper($args_list);
124			if ($args_list) {
125			if (ref $args_list eq 'ARRAY') {
126			foreach (@$args_list) {
127			$args = merge($args, $_);
128			}
129			} else {
130			$args = $args_list;
131			}
132			}
133			$command = '_' . $command;
134	joko	1.2
135
136			# determine container
137			my $container; # = $self->getInstance();
138			$container \|\|= $self;
139
140			if ($container->can($command)) {
141			$container->$command($args);
142	joko	1.1	} else {
143	joko	1.2	$self->log("Command '$command' not implemented.", "warning");
144	joko	1.1	}
145	joko	1.2
146	joko	1.1	}
147
148	joko	1.2
149			sub merge_properties {
150	joko	1.1	my $self = shift;
151	joko	1.2	my $name = shift;
152			my $data = shift;
153	joko	1.1
154	joko	1.2	$self->log("merge-name: $name");
155			#print "name: $name", "\n";
156			#print Dumper($data);
157			#exit;
158	joko	1.1
159	joko	1.2	# check if slot (or childs of it) is/are already occupied
160			#if (my $data_old = ref_slot($self, $name, undef, '.')) {
161			if (my $data_old = $self->get_property($name)) {
162			#print "old:", "\n";
163			#print Dumper($data_old);
164
165			# FIXME: review - any options for 'merge' here?
166			my $data_new = merge($data_old, $data);
167			#print "DATA NEE! - MERGE!", "\n";
168			#print Dumper($data_new);
169			#exit;
170	joko	1.3	#merge_to($self, $data_new);
171	joko	1.2	$self->set_property( { name => $name, value => $data_new } );
172
173	joko	1.1	} else {
174	joko	1.2
175			=pod
176			# make up a dummy hash matching the structure of the destination one
177			my $dummy = {};
178			ref_slot($dummy, $name, $data, '.');
179			print Dumper($dummy);
180
181			# mix into destination
182			mixin($self, $dummy, { init => 1 });
183			=cut
184
185			ref_slot($self, $name, $data, '.');
186
187	joko	1.1	}
188	joko	1.2
189
190			#print Dumper($self);
191			#exit;
192			#$self->
193
194			}
195	joko	1.1
196	joko	1.2	sub set_property {
197			my $self = shift;
198			my $args = shift;
199
200			$self->interpolate($args) ;
201			my $name = $args->{name};
202			my $value = $args->{value};
203			$name = '__rap.properties.' . $name;
204
205			$self->log("set-name: $name");
206	joko	1.1
207			# fill property slot with given value
208			if ($value) {
209	joko	1.2	ref_slot($self, $name, $value, '.');
210	joko	1.1	}
211
212	joko	1.2	#print Dumper($self);
213
214	joko	1.1	# FIXME!!!
215	joko	1.2	#return if ! ref $args;
216	joko	1.1
217			# fill property slot with (probably bigger) data structure from property-/configuration-style - file
218			if (my $file = $args->{file}) {
219			my $type = $args->{type};
220			if (!$type) {
221			die("default file (no type specified) is not implemented yet!");
222
223			} elsif ($type eq 'perl-eval') {
224			#die($type);
225			$self->loadFromPerlFile($file, $name, $args->{'varnames'});
226
227			} elsif ($type eq 'App::Config') {
228			die("not implemented: $type");
229
230			}
231
232			} elsif (my $command = $args->{command}) {
233	joko	1.2	$self->perform_command($command, $args);
234	joko	1.1
235			}
236
237			}
238
239			sub get_property {
240			my $self = shift;
241			#my $args = shift;
242			my $name = shift;
243
244			#$self->interpolate($args);
245
246			#my $name = $args->{name};
247	joko	1.2	my $result;
248
249			if (!$name) {
250			$self->log( __PACKAGE__ . ": no name!", 'critical');
251
252			} elsif ($name eq '/') {
253			$result = expand($self);
254
255			} elsif ($name eq '.') {
256			if (my $instance = $self->getInstance()) {
257			$result = expand($instance);
258			} else {
259			$result = ref_slot($self, '__rap.properties', undef, '.');
260
261			}
262	joko	1.1
263	joko	1.2	} else {
264
265			$name = '__rap.properties.' . $name;
266
267			$self->log("get-name: $name");
268
269			# get property slot and return value
270			$result = ref_slot($self, $name, undef, '.');
271
272			# FIXME: Is this okay? It's provided for now in order not
273			# to deliver an 'undef' to the regex below inside 'interpolate'.
274			# revamp this, maybe!
275			#$result \|\|= ''; # NO!!!
276			}
277	joko	1.1
278	joko	1.2	return $result;
279	joko	1.1	}
280
281			sub interpolate {
282			my $self = shift;
283			my $ref = shift;
284			IterHash %$ref, sub {
285			#print $_[1], "\n";
286			$_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
287			}
288			}
289	joko	1.2
290			sub run_executable {
291			my $self = shift;
292			my $opts = shift;
293
294			if ($opts->{executable}) {
295
296			my $program = $opts->{executable};
297			delete $opts->{executable};
298
299	joko	1.5	# determine execution method
300			my $method = 'run_cmd';
301			my $wrapper_program = '';
302
303			# check if program is a namespace-string (contains '::') - use 'do' in this case!
304			if ($program =~ /::/) {
305			#if ($program =~ s/::/\\/g) {
306			#$program = '.\\' . $program;
307			#$method = 'require';
308			#do "$program";
309			#return;
310			#$method = 'rap.';
311
312			$wrapper_program = 'rap.pl';
313
314			}
315
316			# prepare arguments
317	joko	1.2	my @buf;
318			foreach (keys %$opts) {
319			my $value = $opts->{$_};
320	joko	1.4	if (m/^_/) {
321			if ($_ eq '_switches') {
322			my @switches = split(/,\s\|,/, $value);
323			foreach my $switch (@switches) {
324			push @buf, '--' . $switch;
325			}
326			}
327			next;
328			}
329
330	joko	1.2	if ($value =~ /\s/) {
331			$value = "\"$value\"";
332			}
333			push @buf, "--$_=$value";
334			}
335	joko	1.5
336			# build {program} & {arguments}
337			my $cmd = join(' ', $wrapper_program, $program) . ' ' . join(' ', @buf);
338	joko	1.2
339			# trace
340			#print "command: $cmd", "\n";
341
342			# start process
343			# V1: via shortcut
344			#$ENV{PERL5LIB} = join(' ', @INC);
345
346			# FIXME!!! what about the other slots of @INC?
347			$ENV{PERL5LIB} = $INC[0];
348
349			#print Dumper(%ENV);
350	joko	1.5
351			print "command: '$cmd'", "\n";
352
353			# V1 - basic
354			#run_cmd($cmd);
355
356			# V1.b - enhanced: variable local method
357			my $evalstr = "$method('$cmd');";
358			eval($evalstr);
359			#my $res = do "$cmd";
360			#print $res, "\n" if $res;
361
362			#$self->log("run_executable: $evalstr", 'info');
363			$self->raiseException("run_executable: $evalstr\n$@") if $@;
364
365	joko	1.2	# V2: via IPC::Run
366			# .... (TODO)
367
368
369			}
370
371			}
372
373	joko	1.1
374			1;
375			__END__
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