Adding plugins and plugin management. The Master Client will now automatically download plugins if pluginsync is enabled, and they will be automatically sourced.

git-svn-id: https://reductivelabs.com/svn/puppet/trunk@1302 980ebf18-57e1-0310-9a29-db15c13687c0

3 files changed, 70 insertions, 2 deletions

diff --git a/lib/puppet/client/master.rb b/lib/puppet/client/master.rb
index 53d58daa1..cadabe33b 100644
--- a/lib/puppet/client/master.rb
+++ b/lib/puppet/client/master.rb
@@ -17,8 +17,18 @@ class Puppet::Client::MasterClient < Puppet::Client
             new configurations, where you want to fix the broken configuration
             rather than reverting to a known-good one."
         ]
+    )
 
-
+    Puppet.setdefaults("puppet",
+        :pluginpath => ["$vardir/plugins",
+            "Where Puppet should look for plugins.  Multiple directories should
+            be comma-separated."],
+        :pluginsource => ["puppet://puppet/plugins",
+            "From where to retrieve plugins.  The standard Puppet ``file`` type
+             is used for retrieval, so anything that is a valid file source can
+             be used here."],
+        :pluginsync => [true,
+            "Whether plugins should be synced with the central server."]
     )
 
     @drivername = :Master
@@ -194,6 +204,11 @@ class Puppet::Client::MasterClient < Puppet::Client
             )
         end
 
+        # Retrieve the plugins.
+        if Puppet[:pluginsync]
+            getplugins()
+        end
+
         objects = nil
         if @local
             # If we're local, we don't have to do any of the conversion
@@ -379,6 +394,48 @@ class Puppet::Client::MasterClient < Puppet::Client
                 [Puppet[:classfile], detail]
         end
     end
+
+    private
+    # Retrieve the plugins from the central server.
+    def getplugins
+        plugins = Puppet::Type.type(:component).create(
+            :name => "plugin_collector"
+        )
+        plugins.push Puppet::Type.type(:file).create(
+            :path => Puppet[:pluginpath],
+            :recurse => true,
+            :source => Puppet[:pluginsource]
+        )
+
+        trans = plugins.evaluate
+
+        begin
+            trans.evaluate
+        rescue Puppet::Error => detail
+            if Puppet[:debug]
+                puts detail.backtrace
+            end
+            Puppet.err "Could not retrieve plugins: %s" % detail
+        end
+
+        # Now source all of the changed objects, but only source those
+        # that are top-level.
+        trans.changed?.find_all { |object|
+            File.dirname(object[:path]) == Puppet[:pluginpath]
+        }.each do |object|
+            begin
+                Puppet.info "Loading plugin %s" %
+                    File.basename(object[:path]).sub(".rb",'')
+                load object[:path]
+            rescue => detail
+                Puppet.warning "Could not load %s: %s" %
+                    [object[:path], detail]
+            end
+        end
+
+        # Now clean up after ourselves
+        plugins.remove
+    end
 end
 
 # $Id$
diff --git a/lib/puppet/transaction.rb b/lib/puppet/transaction.rb
index 682727fe5..6e91f6110 100644
--- a/lib/puppet/transaction.rb
+++ b/lib/puppet/transaction.rb
@@ -8,7 +8,6 @@ module Puppet
 class Transaction
     attr_accessor :toplevel, :component, :objects, :tags, :ignoreschedules
 
-
     Puppet.config.setdefaults(:transaction,
         :tags => ["", "Tags to use to find objects.  If this is set, then
             only objects tagged with the specified tags will be applied.
@@ -89,6 +88,13 @@ class Transaction
         @changes.push change
     end
 
+    # Find all of the changed objects.
+    def changed?
+        @changes.find_all { |change| change.changed }.collect { |change|
+            change.state.parent
+        }.uniq
+    end
+
     # Collect all of the targets for the list of events.  This is an unintuitive
     # method because it recurses up through the source the event.
     def collecttargets(events)
diff --git a/lib/puppet/type.rb b/lib/puppet/type.rb
index 2bae3b39d..758f2f1c2 100644
--- a/lib/puppet/type.rb
+++ b/lib/puppet/type.rb
@@ -158,6 +158,11 @@ class Type < Puppet::Element
         t = Class.new(parent) do
             @name = name
         end
+        const = name.to_s.capitalize
+        if const_defined?(const)
+            Puppet.info "Redefining %s" % name
+            remove_const(const)
+        end
         const_set(name.to_s.capitalize,t)
 
         # Initialize any necessary variables.