Merge pull request #229 from OSLL/7167_libvirt_uuid_by_domain_name

7167 libvirt uuid by domain name

core/clone.rb

@@ -1,11 +1,19 @@
-require 'open3'
-
 require_relative 'out'
 require_relative 'helper'
 
+UUID_FOR_DOMAIN_NOT_FOUND_ERROR = 'uuid for domain is not found'
 CONFIG_DIRECTORY_NOT_FOUND_ERROR = 'config directory is not found'
 NODE_NOT_FOUND_ERROR = 'node is not found'
 
+def get_libvirt_uuid_by_domain_name(domain_name)
+  list_output = execute_bash('virsh -q list --all | awk \'{print $2}\'', true).to_s.split "\n"
+  list_uuid_output = execute_bash('virsh -q list --uuid --all', true).to_s.split "\n"
+  list_output.zip(list_uuid_output).each do |domain, uuid|
+    return uuid if domain == domain_name
+  end
+  raise "#{domain_name}: #{UUID_FOR_DOMAIN_NOT_FOUND_ERROR}"
+end
+
 # method returns new image name (which will be used later as a box for template)
 def create_docker_node_clone(path_to_nodes, node_name, path_to_new_config_directory)
   raise "#{path_to_nodes} #{CONFIG_DIRECTORY_NOT_FOUND_ERROR}" unless Dir.exist? path_to_nodes
@@ -14,4 +22,5 @@ def create_docker_node_clone(path_to_nodes, node_name, path_to_new_config_direct
   new_docker_image_name = "#{path_to_new_config_directory}_#{node_name}_#{Time.now.to_i}"
   execute_bash "docker commit -p #{old_docker_image_name} #{new_docker_image_name}"
   return new_docker_image_name
-end
+end
+

spec/test_machine_configurations/7167_libvirt_uuid_by_domain_name.json

@@ -0,0 +1,7 @@
+{
+  "cookbook_path": "../recipes/cookbooks/",
+  "node0": {
+    "hostname": "node0",
+    "box": "ubuntu_trusty_libvirt"
+  }
+}

spec/unit/7167_libvirt_uuid_by_domain_name.rb

@@ -0,0 +1,26 @@
+require_relative '../../core/clone'
+require_relative '../../core/helper'
+
+describe nil do
+
+  before :all do
+    $out = Out.new
+    $session = Session.new
+  end
+
+  it 'node exists and method will not throws error' do
+    lambda {get_libvirt_uuid_by_domain_name("#{ENV['config_name']}_#{ENV['node_name']}")}.should_not raise_error
+  end
+
+  it 'node does not exist and method will throws error' do
+    lambda {get_libvirt_uuid_by_domain_name('WRONG')}
+        .should raise_error 'WRONG: uuid for domain is not found'
+  end
+
+  it 'method returns existing uuid' do
+    uuid = get_libvirt_uuid_by_domain_name("#{ENV['config_name']}_#{ENV['node_name']}")
+    output = execute_bash('virsh -q list --uuid --all', true)
+    output.should include uuid
+  end
+
+end