/[cvs]/nfo/perl/libs/Data/Rap/Command.pm
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Annotation of /nfo/perl/libs/Data/Rap/Command.pm

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Revision 1.10 - (hide annotations)
Sun Jun 20 16:10:05 2004 UTC (20 years ago) by joko
Branch: MAIN
CVS Tags: HEAD
Changes since 1.9: +11 -1 lines
modification to _rapcall: now has "service" to cache target details

1 joko 1.1 ## ----------------------------------------------------------------------
2 joko 1.10 ## $Id: Command.pm,v 1.9 2004/06/19 01:50:24 joko Exp $
3 joko 1.1 ## ----------------------------------------------------------------------
4 joko 1.2 ## $Log: Command.pm,v $
5 joko 1.10 ## Revision 1.9 2004/06/19 01:50:24 joko
6     ## disabled debugging statement
7     ##
8 joko 1.9 ## Revision 1.8 2004/06/07 16:45:56 joko
9     ## now propagates args to "rapcall method"
10     ##
11 joko 1.8 ## Revision 1.7 2003/05/13 07:52:14 joko
12     ## enhanced: *hierarchical* containers for context handling
13     ## making methods from foreign context(s) available
14     ## started: import of targets from foreign topics
15     ##
16 joko 1.7 ## Revision 1.6 2003/03/29 07:10:42 joko
17     ## + sub _script:
18     ## new rap-command: '<script language="msdos/bat|bash|...">...</script>'
19     ##
20 joko 1.6 ## Revision 1.5 2003/03/27 15:31:04 joko
21     ## fixes to modules regarding new namespace(s) below Data::Mungle::*
22     ##
23 joko 1.5 ## Revision 1.4 2003/02/22 16:48:58 joko
24     ## modified rapcall behaviour
25     ##
26 joko 1.4 ## Revision 1.3 2003/02/21 07:39:13 joko
27     ## modified 'rapcall' processing
28     ## modified merging of options/arguments in there
29     ##
30 joko 1.3 ## Revision 1.2 2003/02/20 19:37:09 joko
31     ## renamed modules
32     ## - removed command 'exec'
33     ## + enhanced command 'rapcall' - now handles various different modes and behaviours
34     ## renamed methods
35     ## + command 'exit'
36     ## + command 'use' - switch to foreign namespaces using contexts
37     ##
38 joko 1.2 ## Revision 1.1 2003/02/18 15:35:06 joko
39     ## + initial commit
40     ##
41 joko 1.1 ## ----------------------------------------------------------------------
42    
43    
44     package Data::Rap::Command;
45    
46     use strict;
47     use warnings;
48    
49    
50     use Data::Dumper;
51     use Hash::Merge qw( merge );
52 joko 1.2
53     use DesignPattern::Object;
54 joko 1.5 use Data::Mungle::Transform::Deep qw( merge_to );
55 joko 1.1 use shortcuts qw( run_cmd );
56    
57    
58     sub _echo {
59     my $self = shift;
60     my $args = shift;
61     #print Dumper($args);
62     my $message;
63     my $level;
64    
65     if (ref $args eq 'HASH') {
66     $message = $args->{message};
67     $level = $args->{level};
68     } else {
69     my @buf = ();
70     push @buf, $args;
71     push @buf, @_;
72     $message = join(' ', @buf);
73     }
74    
75     $message ||= 'n/a';
76     $level ||= 'info';
77    
78     $self->log($message, $level);
79     }
80    
81     sub _context {
82     my $self = shift;
83     my $args = shift;
84 joko 1.7 print "_context-args: ", Dumper($args);
85 joko 1.1 foreach my $task_command (keys %$args) {
86     my $bunch = $args->{$task_command};
87     foreach my $task_args (@$bunch) {
88     #print Dumper($task_args);
89 joko 1.2 $self->perform_command($task_command, $task_args);
90 joko 1.1 }
91     }
92     }
93    
94     # FIXME
95     sub _id {}
96    
97     # FIXME
98     sub _description {}
99    
100 joko 1.7 # NEW [2003-05-08]: Hierarchical handling (stack push/pop instead of set/get).
101     # TODO: Named Containers.
102 joko 1.2 sub _container {
103 joko 1.1 my $self = shift;
104 joko 1.2 my $args = shift;
105 joko 1.7 $self->pushContainer($args);
106     }
107    
108     sub _container_end {
109     my $self = shift;
110     my $args = shift;
111     $self->popContainer();
112 joko 1.1 }
113    
114 joko 1.2 sub _sync {
115 joko 1.1 my $self = shift;
116 joko 1.2 my $args = shift;
117    
118     #print Dumper($args);
119    
120     # V1
121     #$bizProcess->runSync($task);
122    
123     #V2
124     my $container = $self->getInstance();
125     $container ||= $self;
126     $container->runSync($args);
127 joko 1.1
128     }
129    
130     sub _depends_old {
131     my $self = shift;
132     my $args = shift;
133     #print Dumper($args);
134     $self->performTarget($args);
135     }
136    
137     sub _dump {
138     my $self = shift;
139     my $args = shift;
140     my $name = $args->{name};
141 joko 1.2 my $message = Dumper($self->get_property($name));
142     $self->rc('echo', "\n" . $message, $args->{level});
143 joko 1.1 }
144    
145 joko 1.2
146 joko 1.1 sub _plugin {
147     my $self = shift;
148     my $args = shift;
149 joko 1.7 my $content = shift;
150 joko 1.2
151     if (my $instance = $args->{instance}) {
152     #$self->{$instance} = DesignPattern::Object->fromPackage($args->{module});
153     my $object = DesignPattern::Object->fromPackage($args->{module});
154     #$self->{$instance}
155     #print Dumper($object);
156     #$object->constructor() if $object->can('constructor');
157    
158     } elsif (my $name = $args->{name}) {
159    
160     # 1. namespaces - load module into current scope or foreign namespace?
161     my $container;
162     if (my $namespace = $args->{namespace}) {
163    
164     $self->log("Loading plugin '$name' into foreign namespace '$namespace'.", 'info');
165    
166     eval qq{
167    
168     # 0. pre-flight check|trace
169     #print "YAI";
170     #$self->log('YAIYAI', 'info'); # FIXME!
171    
172     # 1. work in foreign namespace
173     package $namespace;
174     use strict;
175     use warnings;
176     # 2. mungle with/the
177     # - package namespace (llp)
178     # - object (lloo)
179     # - inheritance (lloo)
180     # - plugin (hlf)
181     # symbols for scopes:
182     # - llp = low-level perl
183     # - lloo = low-level oo
184     # - hlf = high-level framework
185     # bless larry for perl having this implemented in an orthogonal way
186     # 2.1: behaviour=coerce
187     #use base qw( $name );
188     # 2.2: behaviour=plugin
189     use base qw( DesignPattern::Bridge );
190     1;
191     };
192     $self->checkExceptions();
193     $container = $namespace->new();
194    
195     } elsif (my $instance = $self->getInstance()) {
196     $self->log("Loading plugin '$name' into foreign namespace of instance '" . (ref $instance) . "'.", 'info');
197     $container = $instance;
198    
199     } else {
200     #$self->log("Loading plugin '$name' into local scope's namespace (ref \$self='" . (ref $self) . "').", 'info');
201     $self->log("Loading plugin '$name' into local namespace '" . (ref $self) . "'.", 'info');
202     $container = $self;
203     }
204    
205     # 1.b. intermediate checks
206     if (!$container) {
207     $self->log("No container to load '$name' into!", 'warning');
208     return;
209     }
210    
211     # 1.c. inheritance of (e.g.) properties
212     if (my $inherit = $args->{inherit}) {
213     my $properties = $self->get_property($inherit);
214     merge_to($container, { $inherit => $properties }, { init => 1 } );
215     }
216    
217     # 2. plugin - load module into container
218     $container->load($name);
219    
220     # 3. methods - run object methods
221 joko 1.7
222     # payload inside $content is the $args to the $method
223     # convert xml-style payload inside $content to trivial (not-nested) perl hash
224     # using just encapsulated text of the nodes as hash values
225     my $method_args;
226     foreach (@$content) {
227     my $key = $_->{name};
228     my $value = $_->{content}->[0]->{content};
229     $method_args->{$key} = $value;
230     }
231     # convert hashref to arrayref
232     $method_args = [ %$method_args ] if ref $method_args eq 'HASH';
233    
234 joko 1.2 if (my $methods = $args->{methods}) {
235     my @methods = split(/,|,\s/, $methods);
236     foreach (@methods) {
237     $self->log("Running method '$_'.", 'info');
238 joko 1.7 #print Dumper($method_args);
239     # check for existance of method
240     if ($container->can($_)) {
241     # dispatch call by being with or without arguments
242 joko 1.9 #print "method_args: ", Dumper($method_args);
243 joko 1.7 if ($method_args) {
244     $container->$_(@$method_args);
245     } else {
246     $container->$_();
247     }
248     }
249 joko 1.2 }
250     }
251    
252     # 4. instances - create references in local scope
253     if (my $instances = $args->{instances}) {
254     my @instances = split(/,|,\s/, $instances);
255     foreach (@instances) {
256     $self->log("Creating instance '$_'.", 'info');
257     $self->{$_} = $container;
258     }
259     }
260    
261    
262 joko 1.1 }
263     }
264    
265     sub _rapcall {
266     my $self = shift;
267     my $args = shift;
268 joko 1.2
269 joko 1.7 # merge container arguments to local ones if desired/requested/forced
270 joko 1.2 if (my $container = $self->getContainer()) {
271 joko 1.3 #my $opts = merge($container, $args);
272 joko 1.4 #print Dumper($container);
273     merge_to($args, $container, { init => 1 });
274 joko 1.2 }
275 joko 1.3
276 joko 1.4 # trace
277 joko 1.7 #print Dumper($args);
278 joko 1.4
279 joko 1.7 # action dispatcher, either do:
280     # - run an executable program [ext]
281     # - call a command (?) [rap]
282     # - a rap target [rap]
283     # - a code method [ext]
284    
285 joko 1.4 if ($args->{executable}) {
286     $self->run_executable($args);
287     return;
288     }
289 joko 1.2
290 joko 1.1 if (my $command = $args->{command}) {
291 joko 1.2 $self->perform_command($command, $args);
292 joko 1.3 return;
293 joko 1.2 }
294    
295     if (my $target = $args->{target}) {
296     $self->performTarget($target, $args);
297 joko 1.3 return;
298 joko 1.2 }
299    
300     if (my $method = $args->{method}) {
301     #$self->performTarget($target, $args);
302     if (my $refkey = $args->{base}) {
303     #eval($namespace . '::' . $method . '();');
304     #die($@) if $@;
305     #print Dumper($self);
306 joko 1.7
307     #if ($args->{args} && lc $args->{args} eq 'array') {
308     #print Dumper($args);
309     #print Dumper($self);
310     #}
311    
312     # V1 - no arguments were being propagated
313     #$self->{$refkey}->$method();
314     # V2 - trying this....
315 joko 1.8 $self->{$refkey}->$method($args->{args});
316 joko 1.2
317     } elsif (my $ref = $self->getInstance()) {
318 joko 1.8 $ref->$method($args->{args});
319 joko 1.2 }
320 joko 1.3
321     return;
322    
323 joko 1.1 }
324 joko 1.10
325     if (my $service = $args->{service}) {
326     if ($service eq 'indexTargets') {
327     $self->indexTargets({ build => 1 });
328     }
329 joko 1.1
330 joko 1.10 }
331    
332 joko 1.2 }
333    
334     sub _exit {
335     exit;
336     }
337    
338     sub _use {
339     my $self = shift;
340     my $args = shift;
341 joko 1.7
342     # new of ~2003-04-15: making methods from foreign context(s) available
343     if (my $name = $args->{name}) {
344     $args->{type} ||= '';
345     $self->log("Switching to $args->{type} '$name'.", 'info');
346     $self->setInstance($self->{$name}) if $args->{type} eq 'instance';
347     }
348    
349     # new of ~2003-04-15: making methods from foreign context(s) available
350     if (exists $args->{method_prefix}) {
351     #print "YAI", "\n";
352     #print Dumper($args);
353     $self->set_property( { name => 'core.method_prefix', value => $args->{method_prefix} } );
354     }
355    
356     # TODO: (possible feature)
357     # check for $args->{export_rap_commands} to export core rap-commands
358     # from rap engine's scope to the worker's
359    
360 joko 1.1 }
361    
362 joko 1.6 sub _script {
363     my $self = shift;
364     my $args = shift;
365     my $content = shift;
366    
367     # trace
368     #print Dumper($args);
369     #print Dumper($content);
370    
371     my $code = $content->[0]->{content};
372     $code ||= '';
373    
374     $self->run_script($args, $code);
375 joko 1.7
376     }
377    
378     sub _import {
379     my $self = shift;
380     my $args = shift;
381     #my $content = shift;
382    
383     if (!$args->{topic}) {
384     $self->log("Please specify topic.", 'warning');
385     return;
386     }
387    
388     $self->log("Importing all targets from topic '$args->{topic}'.", 'info');
389    
390     #print Dumper($self);
391     # FIXME: This was started off, but not finished!
392     print "registry: ", Dumper($Data::Rap::registry);
393 joko 1.6
394     }
395 joko 1.1
396     1;
397     __END__

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