refactor set_domain_name to avoid duplicate names when running multiple guests.

lib/vagrant-libvirt/action/set_name_of_domain.rb

@@ -1,3 +1,4 @@
+require 'securerandom'
 module VagrantPlugins
   module ProviderLibvirt
     module Action
@@ -10,16 +11,7 @@ module VagrantPlugins
         end
 
         def call(env)
-          require 'securerandom'
-          config = env[:machine].provider_config
-          if config.default_prefix.nil?
-            env[:domain_name] = env[:root_path].basename.to_s.dup
-          else
-            env[:domain_name] = config.default_prefix.to_s
-          end
-          env[:domain_name].gsub!(/[^-a-z0-9_]/i, '')
-          env[:domain_name] << '_'
-          env[:domain_name] << env[:machine].name.to_s
+          env[:domain_name] = build_domain_name(env)
 
           begin
             @logger.info("Looking for domain #{env[:domain_name]} through list #{env[:libvirt_compute].servers.all}")
@@ -34,13 +26,32 @@ module VagrantPlugins
 
           @logger.info("Looking for domain #{env[:domain_name]}")
 
-          if domain != nil
+          unless domain.nil?
             raise ProviderLibvirt::Errors::DomainNameExists,
               :domain_name => env[:domain_name]
           end
 
           @app.call(env)
         end
+
+        # build domain name
+        # avoids `domain about to create is already taken`
+        # @example
+        #   development-centos-6-chef-11_1404488971_3b7a569e2fd7c554b852
+        # @return [String] libvirt domain name
+        def build_domain_name(env)
+          postfix = "#{Time.now.utc.to_i}_#{SecureRandom.hex(10)}"
+          config = env[:machine].provider_config
+          domain_name = 
+            if config.default_prefix.nil?
+              env[:root_path].basename.to_s.dup
+            else
+              config.default_prefix.to_s
+            end
+          domain_name.gsub!(/[^-a-z0-9_]/i, '')
+          domain_name << "_#{postfix}"           
+        end
+
       end
 
     end

lib/vagrant-libvirt/version.rb

@@ -1,5 +1,5 @@
 module VagrantPlugins
   module ProviderLibvirt
-    VERSION = '0.0.18'
+    VERSION = '0.0.19'
   end
 end

vagrant-libvirt.gemspec

@@ -16,6 +16,10 @@ Gem::Specification.new do |gem|
   gem.require_paths = ['lib']
   gem.version       = VagrantPlugins::ProviderLibvirt::VERSION
 
+  gem.add_development_dependency "rspec-core", "~> 2.12.2"
+  gem.add_development_dependency "rspec-expectations", "~> 2.12.1"
+  gem.add_development_dependency "rspec-mocks", "~> 2.12.1"
+
   gem.add_runtime_dependency 'fog', '~> 1.15'
   gem.add_runtime_dependency 'ruby-libvirt', '~> 0.4.0'
   gem.add_runtime_dependency 'nokogiri', '~> 1.5.9'