add support for roles in Chef Solo

lib/vagrant/provisioners/chef.rb

@@ -15,6 +15,7 @@ module Vagrant
 
         # Chef solo specific config
         attr_accessor :cookbooks_path
+        attr_accessor :roles_path
 
         # Shared config
         attr_accessor :provisioning_path
@@ -27,6 +28,7 @@ module Vagrant
           @node_name = "client"
 
           @cookbooks_path = "cookbooks"
+          @roles_path = []
           @provisioning_path = "/tmp/vagrant-chef"
           @log_level = :info
           @json = {

lib/vagrant/provisioners/chef_solo.rb

@@ -4,6 +4,7 @@ module Vagrant
     class ChefSolo < Chef
       def prepare
         share_cookbook_folders
+        share_role_folders
       end
 
       def provision!
@@ -18,11 +19,18 @@ module Vagrant
           env.config.vm.share_folder("vagrant-chef-solo-#{i}", cookbook_path(i), cookbook)
         end
       end
+      
+      def share_role_folders
+        host_role_paths.each_with_index do |role, i|
+          env.config.vm.share_folder("vagrant-chef-solo-#{i}", role_path(i), role)
+        end
+      end
 
       def setup_solo_config
         setup_config("chef_solo_solo", "solo.rb", {
           :provisioning_path => env.config.chef.provisioning_path,
-          :cookbooks_path => cookbooks_path
+          :cookbooks_path => cookbooks_path,
+          :roles_path => roles_path
         })
       end
 
@@ -43,10 +51,21 @@ module Vagrant
         cookbooks.collect! { |cookbook| File.expand_path(cookbook, env.root_path) }
         return cookbooks
       end
+      
+      def host_role_paths
+        roles = env.config.chef.roles_path
+        roles = [roles] unless roles.is_a?(Array)
+        roles.collect! { |role| File.expand_path(role, env.root_path) }
+        return roles
+      end
 
       def cookbook_path(i)
         File.join(env.config.chef.provisioning_path, "cookbooks-#{i}")
       end
+      
+      def role_path(i)
+        File.join(env.config.chef.provisioning_path, "roles-#{i}")
+      end
 
       def cookbooks_path
         result = []
@@ -59,6 +78,18 @@ module Vagrant
         result = result[0].to_s if result.length == 1
         result.to_json
       end
+      
+      def roles_path
+        result = []
+        host_role_paths.each_with_index do |host_path, i|
+          result << role_path(i)
+        end
+
+        # We're lucky that ruby's string and array syntax for strings is the
+        # same as JSON, so we can just convert to JSON here and use that
+        result = result[0].to_s if result.length == 1
+        result.to_json
+      end
     end
   end
 end

templates/chef_solo_solo.erb

@@ -1,3 +1,4 @@
 file_cache_path "<%= provisioning_path %>"
 cookbook_path <%= cookbooks_path %>
+role_path <%= roles_path %>
 log_level          <%= log_level.inspect %>

test/vagrant/provisioners/chef_solo_test.rb

@@ -11,6 +11,11 @@ class ChefSoloProvisionerTest < Test::Unit::TestCase
       @action.expects(:share_cookbook_folders).once
       @action.prepare
     end
+    
+    should "share role folders" do
+      @action.expects(:share_role_folders).once
+      @action.prepare
+    end
   end
 
   context "provisioning" do
@@ -39,6 +44,22 @@ class ChefSoloProvisionerTest < Test::Unit::TestCase
       @action.share_cookbook_folders
     end
   end
+  
+  context "sharing role folders" do
+    setup do
+      @host_role_paths = ["foo", "bar"]
+      @action.stubs(:host_role_paths).returns(@host_role_paths)
+    end
+
+    should "share each role folder" do
+      share_seq = sequence("share_seq")
+      @host_role_paths.each_with_index do |role, i|
+        @env.config.vm.expects(:share_folder).with("vagrant-chef-solo-#{i}", @action.role_path(i), role).in_sequence(share_seq)
+      end
+
+      @action.share_role_folders
+    end
+  end
 
   context "host cookbooks paths" do
     should "return as an array if was originally a string" do
@@ -58,6 +79,25 @@ class ChefSoloProvisionerTest < Test::Unit::TestCase
       assert_equal cookbooks, @action.host_cookbook_paths
     end
   end
+  
+  context "host roles paths" do
+    should "return as an array if was originally a string" do
+      File.stubs(:expand_path).returns("foo")
+      @env.config.chef.roles_path = "foo"
+
+      assert_equal ["foo"], @action.host_role_paths
+    end
+
+    should "return the array of roles if its an array" do
+      roles = ["foo", "bar"]
+      @env.config.chef.roles_path = roles
+
+      expand_seq = sequence('expand_seq')
+      roles.collect! { |role| File.expand_path(role, @env.root_path) }
+
+      assert_equal roles, @action.host_role_paths
+    end
+  end
 
   context "cookbooks path" do
     should "return a proper path to a single cookbook" do
@@ -81,6 +121,29 @@ class ChefSoloProvisionerTest < Test::Unit::TestCase
       assert_equal @cookbooks.to_json, @action.cookbooks_path
     end
   end
+  
+  context "roles path" do
+    should "return a proper path to a single role" do
+      expected = File.join(@env.config.chef.provisioning_path, "roles-5")
+      assert_equal expected, @action.role_path(5)
+    end
+
+    should "return array-representation of role paths if multiple" do
+      @roles = (0..5).inject([]) do |acc, i|
+        acc << @action.role_path(i)
+      end
+
+      @env.config.chef.roles_path = @roles
+      assert_equal @roles.to_json, @action.roles_path
+    end
+
+    should "return a single string representation if roles paths is single" do
+      @roles = @action.role_path(0)
+
+      @env.config.chef.roles_path = @roles
+      assert_equal @roles.to_json, @action.roles_path
+    end
+  end
 
   context "generating and uploading chef solo configuration file" do
     setup do
@@ -90,7 +153,8 @@ class ChefSoloProvisionerTest < Test::Unit::TestCase
     should "call setup_config with proper variables" do
       @action.expects(:setup_config).with("chef_solo_solo", "solo.rb", {
         :provisioning_path => @env.config.chef.provisioning_path,
-        :cookbooks_path => @action.cookbooks_path
+        :cookbooks_path => @action.cookbooks_path,
+        :roles_path => @action.roles_path
       })
 
       @action.setup_solo_config