2 |
## $Id$ |
## $Id$ |
3 |
## -------------------------------------------------------------------------------- |
## -------------------------------------------------------------------------------- |
4 |
## $Log$ |
## $Log$ |
5 |
|
## Revision 1.6 2003/02/09 16:22:51 joko |
6 |
|
## + pseudo constructor mechanism via options |
7 |
|
## |
8 |
|
## Revision 1.5 2003/01/31 01:19:50 root |
9 |
|
## + fixed: doesn't need Log::Dispatch any more, but uses it if available |
10 |
|
## |
11 |
|
## Revision 1.4 2003/01/20 16:55:15 joko |
12 |
|
## + sub mixinPackage |
13 |
|
## + sub include |
14 |
|
## |
15 |
|
## Revision 1.3 2002/12/16 19:57:12 joko |
16 |
|
## + sub unload |
17 |
|
## |
18 |
|
## Revision 1.2 2002/12/15 02:06:15 joko |
19 |
|
## + feature to be able to specify module in non-perl-style when loading plugins: e.g. $process->load('Setup/Storage') |
20 |
|
## |
21 |
## Revision 1.1 2002/12/13 21:46:29 joko |
## Revision 1.1 2002/12/13 21:46:29 joko |
22 |
## + initial check-in |
## + initial check-in |
23 |
## |
## |
31 |
|
|
32 |
use base qw( DesignPattern::Object ); |
use base qw( DesignPattern::Object ); |
33 |
|
|
34 |
|
use Data::Dumper; |
35 |
|
|
36 |
## ======== object inheritance ======== |
## ======== object inheritance ======== |
37 |
|
|
38 |
# TODO: |
# TODO: |
47 |
# - sub run |
# - sub run |
48 |
|
|
49 |
# get logger instance |
# get logger instance |
50 |
my $logger = Log::Dispatch::Config->instance; |
my $logger = eval { Log::Dispatch::Config->instance; }; |
51 |
|
|
52 |
|
my $meta; |
53 |
|
|
54 |
## ======== object constructor ======== |
## ======== object constructor ======== |
55 |
sub new { |
sub new { |
57 |
my $class = ref($invocant) || $invocant; |
my $class = ref($invocant) || $invocant; |
58 |
my @args = (); |
my @args = (); |
59 |
@_ && (@args = @_); |
@_ && (@args = @_); |
60 |
$logger->debug( __PACKAGE__ . "->new(@args)" ); |
$logger->debug( __PACKAGE__ . "->new(@args)" ) if $logger; |
61 |
my $self = { @_ }; |
my $self = { @_ }; |
62 |
#print "class: $class", "\n"; |
#print "class: $class", "\n"; |
63 |
bless $self, $class; |
bless $self, $class; |
80 |
my $method = $AUTOLOAD; |
my $method = $AUTOLOAD; |
81 |
$method =~ s/^.*:://; |
$method =~ s/^.*:://; |
82 |
|
|
83 |
$logger->debug( __PACKAGE__ . "->" . $method . "(@_)" . " (AUTOLOAD called, not dispatched)" ); |
$logger->debug( __PACKAGE__ . "->" . $method . "(@_)" . " (AUTOLOAD called, not dispatched)" ) if $logger; |
84 |
|
|
85 |
## ->DESTROY would - if not declared - trigger an AUTOLOAD also |
## ->DESTROY would - if not declared - trigger an AUTOLOAD also |
86 |
return if $method =~ m/::DESTROY$/; |
return if $method =~ m/::DESTROY$/; |
91 |
## } |
## } |
92 |
|
|
93 |
} |
} |
|
|
|
|
sub load { |
|
94 |
|
|
95 |
|
sub _getPluginPackage { |
96 |
my $self = shift; |
my $self = shift; |
97 |
|
my $modulename_load = shift; |
98 |
|
|
99 |
|
# substitute slashes through double double-colons to load modules perl-style |
100 |
|
$modulename_load =~ s/\//::/g; |
101 |
|
|
102 |
|
# build full package name |
103 |
my $self_classname = ref $self; |
my $self_classname = ref $self; |
104 |
|
my $package = $self_classname . '::' . $modulename_load; |
105 |
|
return $package; |
106 |
|
} |
107 |
|
|
108 |
|
sub load { |
109 |
|
|
110 |
|
my $self = shift; |
111 |
my $modulename_load = shift; |
my $modulename_load = shift; |
112 |
|
|
113 |
|
my $options = shift; |
114 |
|
|
115 |
|
my $self_modulename = ref $self; |
116 |
|
my $package = $self->_getPluginPackage($modulename_load); |
117 |
|
|
118 |
my $package = $self_classname . '::' . $modulename_load; |
if ($meta->{loaded}->{$package}) { |
119 |
$logger->info( __PACKAGE__ . "->load: $package" ); |
return 1; |
120 |
|
} |
121 |
|
|
122 |
|
#$logger->info( __PACKAGE__ . "->load: $package" ) if $logger; |
123 |
|
#$logger->info( __PACKAGE__ . "->load: $self_modulename" ) if $logger; |
124 |
|
$logger->debug( $self_modulename . "->load: $package\t[via " . __PACKAGE__ . "]" ) if $logger; |
125 |
|
|
126 |
# this is the module testing phase - use mixin doesn't seem to propagate errors by default |
# this is the module testing phase - use mixin doesn't seem to propagate errors by default |
127 |
eval("use $package;"); |
eval("use $package;"); |
128 |
if ($@) { |
if ($@) { |
129 |
$logger->error( __PACKAGE__ . "->load: $@" ); |
$meta->{loaded}->{$package} = 0; |
130 |
|
# include caller information |
131 |
|
my @caller = caller; |
132 |
|
my $caller_msg = $caller[1] . ':' . $caller[2]; |
133 |
|
my $msg = __PACKAGE__ . "->load: $@ ($caller_msg)"; |
134 |
|
if ($logger) { |
135 |
|
$logger->error($msg); |
136 |
|
} else { |
137 |
|
print $msg, "\n"; |
138 |
|
} |
139 |
} |
} |
140 |
|
|
141 |
#print "ref-1: ", ref $self, "\n"; |
#print "ref-1: ", ref $self, "\n"; |
146 |
|
|
147 |
# V2: |
# V2: |
148 |
# switch into foreign package and mixin plugin-module |
# switch into foreign package and mixin plugin-module |
149 |
|
$self->mixinPackage($package); |
150 |
|
|
151 |
|
if (my $method = $options->{method}) { |
152 |
|
$self->$method(); |
153 |
|
} |
154 |
|
|
155 |
|
return 1; |
156 |
|
|
157 |
|
} |
158 |
|
|
159 |
|
# TODO: maybe refactor to DesignPattern::Object? what about the '$logger'? |
160 |
|
sub mixinPackage { |
161 |
|
my $self = shift; |
162 |
|
my $package = shift; |
163 |
|
# switch into foreign package and mixin plugin-module |
164 |
|
my $self_classname = ref $self; |
165 |
eval("package $self_classname; use mixin '$package';"); |
eval("package $self_classname; use mixin '$package';"); |
166 |
#eval("use mixin_all '$package';"); |
#eval("use mixin_all '$package';"); |
167 |
if ($@) { |
if ($@) { |
168 |
$logger->error( __PACKAGE__ . "->load: $@" ); |
$meta->{loaded}->{$package} = 0; |
169 |
|
$logger->error( __PACKAGE__ . "->load: $@" ) if $logger; |
170 |
|
} else { |
171 |
|
$meta->{loaded}->{$package} = 1; |
172 |
} |
} |
173 |
|
} |
174 |
|
|
175 |
|
sub unload { |
176 |
|
|
177 |
|
my $self = shift; |
178 |
|
my $modulename_unload = shift; |
179 |
|
|
180 |
|
my $package = $self->_getPluginPackage($modulename_unload); |
181 |
|
|
182 |
|
if ($meta->{loaded}->{$package}) { |
183 |
|
$meta->{loaded}->{$package} = 0; |
184 |
|
my $where = __PACKAGE__ . ':' . __LINE__; |
185 |
|
$logger->debug( __PACKAGE__ . "->unload: FIXME: DESTROY object is not implemented at '$where'." ) if $logger; |
186 |
|
} |
187 |
|
|
188 |
} |
} |
189 |
|
|
190 |
|
|
191 |
sub boot { |
sub boot { |
192 |
my $self = shift; |
my $self = shift; |
193 |
$self->_abstract_function('boot'); |
$self->_abstract_function('boot'); |
194 |
} |
} |
195 |
|
|
196 |
|
sub include { |
197 |
|
my $self = shift; |
198 |
|
my $includefile = shift; |
199 |
|
my $package = shift; |
200 |
|
# TODO: do better error-detection here / prevent dies under all circumstances! |
201 |
|
require $includefile; |
202 |
|
$self->mixinPackage($package) if $package; |
203 |
|
} |
204 |
|
|
205 |
1; |
1; |