Changing host and port aliases to also create Puppet aliases. This involved futzing around with the attr* methods in Type.rb, to make sure states are always checked first.

git-svn-id: https://reductivelabs.com/svn/puppet/trunk@823 980ebf18-57e1-0310-9a29-db15c13687c0

3 files changed, 51 insertions, 26 deletions

diff --git a/lib/puppet/type.rb b/lib/puppet/type.rb
index 9c5f17ac9..0e4c1425d 100644
--- a/lib/puppet/type.rb
+++ b/lib/puppet/type.rb
@@ -196,17 +196,21 @@ class Type < Puppet::Element
     # the objects multiple times when iterating over them.
     def self.alias(name, obj)
         if @objects.include?(name)
-            raise Puppet::Error.new(
-                "Cannot create alias %s: object already exists" %
-                [name]
-            )
+            unless @objects[name] == obj
+                raise Puppet::Error.new(
+                    "Cannot create alias %s: object already exists" %
+                    [name]
+                )
+            end
         end
 
         if @aliases.include?(name)
-            raise Puppet::Error.new(
-                "Object %s already has alias %s" %
-                [@aliases[name].name, name]
-            )
+            unless @aliases[name] == obj
+                raise Puppet::Error.new(
+                    "Object %s already has alias %s" %
+                    [@aliases[name].name, name]
+                )
+            end
         end
 
         @aliases[name] = obj
@@ -263,6 +267,9 @@ class Type < Puppet::Element
         if defined? @objects
             @objects.clear
         end
+        if defined? @aliases
+            @aliases.clear
+        end
     end
 
     # remove a specified object
@@ -484,9 +491,9 @@ class Type < Puppet::Element
     # Find the class associated with any given attribute.
     def self.attrclass(name)
         case self.attrtype(name)
-        when :param: @paramhash[name]
-        when :meta: @@metaparamhash[name]
         when :state: @validstates[name]
+        when :meta: @@metaparamhash[name]
+        when :param: @paramhash[name]
         end
     end
 
@@ -546,9 +553,9 @@ class Type < Puppet::Element
     # What type of parameter are we dealing with?
     def self.attrtype(name)
         case
-        when @paramhash.include?(name): return :param
-        when @@metaparamhash.include?(name): return :meta
         when @validstates.include?(name): return :state
+        when @@metaparamhash.include?(name): return :meta
+        when @paramhash.include?(name): return :param
         else
             raise Puppet::DevError, "Invalid attribute '%s' for class '%s'" %
                 [name, self.name]
@@ -644,9 +651,8 @@ class Type < Puppet::Element
             raise Puppet::Error.new("Got nil value for %s" % name)
         end
 
-        if Puppet::Type.metaparam?(name)
-            self.newmetaparam(self.class.metaparamclass(name), value)
-        elsif stateklass = self.class.validstate?(name) 
+        case self.class.attrtype(name)
+        when :state
             if value.is_a?(Puppet::State)
                 self.debug "'%s' got handed a state for '%s'" % [self,name]
                 @states[name] = value
@@ -662,7 +668,9 @@ class Type < Puppet::Element
                     end
                 end
             end
-        elsif self.class.validparameter?(name)
+        when :meta
+            self.newmetaparam(self.class.metaparamclass(name), value)
+        when :param
             # if they've got a method to handle the parameter, then do it that way
             self.newparam(self.class.attrclass(name), value)
         else
diff --git a/lib/puppet/type/parsedtype/host.rb b/lib/puppet/type/parsedtype/host.rb
index 69c1dbe06..93d0a9002 100755
--- a/lib/puppet/type/parsedtype/host.rb
+++ b/lib/puppet/type/parsedtype/host.rb
@@ -9,9 +9,12 @@ module Puppet
             desc "The host's IP address."
         end
 
-        newstate(:aliases) do
-            desc "Any aliases the host might have.  Multiple values must be
-                specified as an array."
+        newstate(:alias) do
+            desc "Any alias the host might have.  Multiple values must be
+                specified as an array.  Note that this state has the same name
+                as one of the metaparams; using this state to set aliases will
+                make those aliases available in your Puppet scripts and also on
+                disk."
 
             # We have to override the feeding mechanism; it might be nil or 
             # white-space separated
@@ -36,6 +39,12 @@ module Puppet
                     raise Puppet::Error, "Aliases cannot include whitespace"
                 end
             end
+
+            munge do |value|
+                # Add the :alias metaparam in addition to the state
+                @parent.newmetaparam(@parent.class.metaparamclass(:alias), value)
+                value
+            end
         end
 
         newparam(:name) do
@@ -51,7 +60,7 @@ module Puppet
         @instances = []
 
         @path = "/etc/hosts"
-        @fields = [:ip, :name, :aliases]
+        @fields = [:ip, :name, :alias]
 
         @filetype = Puppet::FileType.filetype(:flat)
 #        case Facter["operatingsystem"].value
@@ -83,8 +92,8 @@ module Puppet
                         raise Puppet::Error, "Could not match '%s'" % line
                     end
 
-                    if hash[:aliases] == ""
-                        hash.delete(:aliases)
+                    if hash[:alias] == ""
+                        hash.delete(:alias)
                     end
 
                     hash2obj(hash)
diff --git a/lib/puppet/type/parsedtype/port.rb b/lib/puppet/type/parsedtype/port.rb
index 65549d7da..be63c11be 100755
--- a/lib/puppet/type/parsedtype/port.rb
+++ b/lib/puppet/type/parsedtype/port.rb
@@ -44,9 +44,11 @@ module Puppet
             desc "The port description."
         end
 
-        newstate(:aliases) do
+        newstate(:alias) do
             desc "Any aliases the port might have.  Multiple values must be specified
-                as an array."
+                as an array.  Note that this state has the same name as one of the
+                metaparams; using this state to set aliases will make those aliases
+                available in your Puppet scripts and also on disk."
 
             # We have to override the feeding mechanism; it might be nil or 
             # white-space separated
@@ -71,6 +73,12 @@ module Puppet
                     raise Puppet::Error, "Aliases cannot have whitespace in them"
                 end
             end
+
+            munge do |value|
+                # Add the :alias metaparam in addition to the state
+                @parent.newmetaparam(@parent.class.metaparamclass(:alias), value)
+                value
+            end
         end
 
         newparam(:name) do
@@ -84,7 +92,7 @@ module Puppet
             will have different solutions."
 
         @path = "/etc/services"
-        @fields = [:ip, :name, :aliases]
+        @fields = [:ip, :name, :alias]
 
         @filetype = Puppet::FileType.filetype(:flat)
 #        case Facter["operatingsystem"].value
@@ -121,7 +129,7 @@ module Puppet
                             line.sub!(/^([^#]+)\s*/) do |value|
                                 aliases = $1
                                 unless aliases =~ /^\s*$/
-                                    hash[:aliases] = aliases
+                                    hash[:alias] = aliases
                                 end
 
                                 ""