aggiunta struttura base pipeline, e test, re #2

git-svn-id: svn://luxion/repos/WebCoso/trunk@23 fcb26f47-9200-0410-b104-b98ab5b095f3

3 files changed, 66 insertions, 0 deletions

diff --git a/lib/WebCoso/Pipeline/Base.pm b/lib/WebCoso/Pipeline/Base.pm
new file mode 100644
index 0000000..7018fc0
--- /dev/null
+++ b/lib/WebCoso/Pipeline/Base.pm
@@ -0,0 +1,37 @@
+package WebCoso::Pipeline::Base;
+use strict;
+use warnings;
+use WebCoso::X;
+use WebCoso::Step;
+use base 'Class::Data::Inheritable';
+
+__PACKAGE__->mk_classdata('_steps');
+
+sub set_steps {
+    my ($class,@steps)=@_;
+
+    my @full_steps=map {
+        my $full_step_name="WebCoso::Step::$_";
+        if (! WebCoso::Step->is_step($full_step_name)) {
+            WebCoso::X::NoSuchStep->throw(
+                pipeline => $class,
+                step => $_,
+            );
+        }
+        $full_step_name;
+    } @steps;
+
+    $class->_steps([@full_steps]);
+}
+
+sub process {
+    my ($class, $resource)=@_;
+
+    for my $step (@{$class->_steps()}) {
+        $resource = $step->process($resource);
+    }
+
+    return 1;
+}
+
+1;
diff --git a/lib/WebCoso/Step.pm b/lib/WebCoso/Step.pm
new file mode 100644
index 0000000..71a4f07
--- /dev/null
+++ b/lib/WebCoso/Step.pm
@@ -0,0 +1,18 @@
+package WebCoso::Step;
+use strict;
+use warnings;
+use Module::Pluggable::Fast
+    name => '_steps',
+    search => [ 'WebCoso::Step' ],
+    require => 1;
+
+my @steps=_steps();
+my %steps;
+@steps{@steps}=();
+
+sub is_step {
+    my ($class,$step_name)=@_;
+    return exists $steps{$step_name};
+}
+
+1;
diff --git a/lib/WebCoso/X.pm b/lib/WebCoso/X.pm
index 1894a28..57acd58 100644
--- a/lib/WebCoso/X.pm
+++ b/lib/WebCoso/X.pm
@@ -37,6 +37,11 @@ use Exception::Class
             fields => [ 'resource' ],
             description => 'è stata richiesta una risorsa ignota',
         },
+        'WebCoso::X::NoSuchStep' => {
+            isa => 'WebCoso::X::Base',
+            fields => [ 'pipeline', 'step' ],
+            description => 'una pipeline vuole usare uno step ignoto',
+        },
     );
 
 WebCoso::X::Base->Trace(1);
@@ -71,4 +76,10 @@ sub WebCoso::X::NoSuchResource::full_message {
     return 'Risorsa ignota: ' . $self->resource();
 }
 
+sub WebCoso::X::NoSuchStep::full_message {
+    my ($self)=@_;
+
+    return 'La pipeline ' . $self->pipeline() . ' vuole usare lo step ' . $self->step() . ' che è ignoto';
+}
+
 1;