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## ------------------------------------------------------------------------- |
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## $Id: Rap.pm,v 1.4 2003/03/27 15:31:01 joko Exp $ |
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## ------------------------------------------------------------------------- |
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## $Log: Rap.pm,v $ |
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## Revision 1.4 2003/03/27 15:31:01 joko |
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## fixes to modules regarding new namespace(s) below Data::Mungle::* |
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## |
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## Revision 1.3 2003/02/20 18:44:26 joko |
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## renamed modules |
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## + sub find_rules: attempts to find 'rap.xml' |
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## + updated documentation: added SYNOPSIS |
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## |
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## Revision 1.2 2003/02/18 16:02:04 joko |
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## +- renamed module |
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## |
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## Revision 1.1 2003/02/18 15:34:26 joko |
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## + initial commit |
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## |
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## ------------------------------------------------------------------------- |
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|
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|
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=pod |
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|
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=head1 Preface |
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|
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=head2 hmm..... |
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|
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A Command is a Request. |
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A Task is a Process. |
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A Request is a Command. |
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A Process is a Task. |
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There are just details. |
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|
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=head2 ahh... |
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|
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CPAN already *has got* all the tools starting an attempt to do this. |
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|
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Having enough experience with Perl now, this attempt should work out well..... |
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But still, Hmmm...... |
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And: lots of work, i believe.... |
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|
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Okay: |
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Look at DesignPattern:: and Data::Mungle::Transform::Deep & Co. (lowlevel stuff) |
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or OEF::, Data::Storage and Data::Transfer::Sync (highlevel stuff). |
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|
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And then: |
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|
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|
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=head1 SYNOPSIS |
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|
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my $rap = Data::Rap->new( target => 'sync-core' ); |
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$rap->start(); |
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|
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print Dumper($rap); |
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|
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print Dumper($rap->get_property('/')); |
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|
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print Dumper($rap->get_property('.')); |
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print Dumper($rap->get_property('global')); |
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print Dumper($rap->get_property('app')); |
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print Dumper($rap->get_property('app.config')); |
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print Dumper($rap->get_property('app.config.preboot')); |
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print Dumper($rap->get_property('app.config.databases.oefcore')); |
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|
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|
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=head1 Overview |
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|
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=head2 Rap - Request And Process |
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|
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|
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=head3 Rap's aims are directed to get some of this together |
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|
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- some concepts of make (->targets) |
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- some concepts of ant (->tasks) |
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- some code written while developing a custom application with Perl: |
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- libraries/modules (CPAN proposals) |
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- Data::Storage::Container |
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- Data::Storage |
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- Data::Transfer::Sync |
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- OEF::Component::Task |
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- make "old" shortcut programs like "feed.pl", "tell.pl" and such obsolete |
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- add more targets in order to make "setup.pl" & Co. obsolete as well |
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- some new concepts (perly): |
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- namespaces |
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- plugins |
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- contexts |
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|
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|
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=head3 It's using these fine modules from CPAN |
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|
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- xml, xpath and such (XML::Parser, XML::XPath) |
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- local os native (background) process execution (IPC::Run) |
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- remote procedure calls with xml payloads: XMLRPC, SOAP and such (RPC::XML, SOAP::Lite) |
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- configuration- and property-data inheritance: Hash::Merge |
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|
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- under the hood: |
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- logging: Log::Dispatch |
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- data-access: DBI & Co., Tangram |
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- data-manipulation: Data::Dumper, Iterate |
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- in other words: all modules already included in some declaration inside 'setup.pl' |
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|
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|
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=head3 Rap does networking |
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|
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x It's a client. (cli program, standalone) |
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(->Command-Frontends: rap.pl) |
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o It's a server/daemon as well. (cli interacts with daemonized engine via tcp-socket) |
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(->Command-Frontends: rap.pl --remote|--host=<hostname>) |
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|
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|
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=head3 Rap is open for enhancements and/or integration into/with other stuff |
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|
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=head4 Command-Frontends (local and/or remote) |
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|
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x rap.pl |
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o Commands can be sent via psh (The Perl Shell) or similar frontends (via rap.pl or Rap.pm) |
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o Commands can be issued from a php-frontend (via RPC using Rap::) |
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|
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=head4 Target-Registry (local and/or remote) |
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|
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x Targets can be defined inside a rap.xml or similar |
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o Targets can be stored in arbitrary data structures (e.g. read from an rdbms or ldap-storage) |
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|
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=head4 Task-Backends (local and/or remote) |
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|
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x Tasks can run as local native processes (attached and/or background) |
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o Tasks can be triggered by issuing RPC-calls to arbitrary multiple hosts |
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|
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=head4 TODO |
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o look at Maven's POM (Project Object Model): |
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- http://jakarta.apache.org/turbine/maven/reference/project-descriptor.html |
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- http://jakarta.apache.org/turbine/maven/images/project-descriptor.gif |
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- http://jakarta.apache.org/turbine/maven/start/integrate.html |
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- http://jakarta.apache.org/turbine/maven/reference/dirlayout.html |
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o integrate with: |
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o POE |
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o PP5E |
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o integrate with pod (for reporting purposes) |
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o look at: |
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btw: "expand": look at scripts@CPAN (System Administration): |
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there is a perl make with perl |
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o refactore child-modules using code from Data::Code only! |
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|
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|
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=cut |
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|
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|
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package Data::Rap; |
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|
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use strict; |
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use warnings; |
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|
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use base qw( |
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DesignPattern::Object |
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DesignPattern::Bridge |
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DesignPattern::Logger |
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DesignPattern::Exception |
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); |
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|
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|
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use Data::Dumper; |
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use Cwd; |
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use File::Spec::Functions qw( splitpath splitdir catpath catdir ); |
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|
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|
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sub constructor { |
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my $self = shift; |
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|
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# patch |
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$self->{__rap}->{filename} = $self->{filename}; |
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delete $self->{filename}; |
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|
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# check |
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if (!$self->{__rap}->{filename}) { |
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$self->{__rap}->{filename} = $self->find_rules(); |
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} |
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|
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$self->load([qw( Metadata Engine Command Context Property )]); |
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#$self->load("Command"); |
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#$self->load("Metadata"); |
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#$self->load("Engine"); |
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|
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# check for another environment-variable: 'RAPBIN' |
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chdir $ENV{RAPBIN} if $ENV{RAPBIN}; |
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|
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} |
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|
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sub start { |
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my $self = shift; |
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$self->log("starting", 'info'); |
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|
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$self->loadGlobalProperties(); |
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|
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#print Dumper($self); |
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if (my $target = $self->{target}) { |
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#$self->{targets}->{$target} = Data::Rap::Target->new( name => $target ); |
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$self->log("target: $target", 'info'); |
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$self->performTarget($target); |
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} else { |
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my $meta_raw = $self->getTargetList(); |
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|
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foreach my $entry (@$meta_raw) { |
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print " - rap.pl $entry->{name}", "\n"; |
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print $entry->{description}, "\n" if $entry->{description}; |
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} |
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return; |
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|
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print Dumper($meta_raw); |
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exit; |
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|
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foreach my $key (keys %{$meta_raw->{target}}) { |
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my $target = $meta_raw->{target}->{$key}; |
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print " - rap.pl $key", "\n"; |
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my $description = $target->{description}; |
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if ($description) { |
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#chomp($description); |
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$description =~ s/^\n+//; |
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$description =~ s/\n+$//; |
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#print "\n" if $description !~ /^\n/; |
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print $description, "\n" if !ref $description; |
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} |
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#print "\n"; |
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} |
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} |
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|
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} |
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sub find_rules { |
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my $self = shift; |
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|
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my $basedir; |
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if (my $rapdir = $ENV{RAPDIR}) { |
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$basedir = $rapdir; |
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} else { |
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my $cwd = cwd(); |
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(my $volume, my $directory, my $file) = splitpath( $cwd ); |
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my @dir = splitdir($directory); |
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pop @dir; |
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#pop @dir; |
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$basedir = catpath($volume, catdir(@dir)); |
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} |
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my $rap_xml = "$basedir/etc/rap.xml"; |
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return $rap_xml; |
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} |
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|
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1; |
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__END__ |
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