Class: Domctl::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/domctl/config.rb

Class Method Summary collapse

Class Method Details

.cluster_nodes ⇒ Object 



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# File 'lib/domctl/config.rb', line 3

def self.cluster_nodes
  yaml = YAML.load_file(self.config_file)
  yaml['cluster']
end

.config_file ⇒ Object 



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# File 'lib/domctl/config.rb', line 73

def self.config_file
  "#{ENV['HOME']}/.domctlrc"
end

.create_sample_config ⇒ Object 



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# File 'lib/domctl/config.rb', line 26

def self.create_sample_config
  if not File.exist?(self.config_file)
    File.open(self.config_file, 'w') do |f|
      cfg = { 'cluster' => {
                'xen0' => {
                  'url' => 'http://xen0.example.net:9363',
                  'username' => 'foo',
                  'password' => 'bar'
                },
                'xen1' => {
                  'url' => 'http://xen1.example.net:9363',
                  'username' => 'foo',
                  'password' => 'bar'
                }
              }
      }
      YAML.dump(cfg, f)
    end
  end
end

.each_host ⇒ Object 



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# File 'lib/domctl/config.rb', line 47

def self.each_host
  cluster_nodes.sort.each do |node, settings|
    begin
      h = Pangea::Host.connect(settings['url'], settings['username'], settings['password'])
      yield h
    rescue Pangea::LinkConnectError => e
      puts "Error connecting to host #{node}. Skipping."
    end
  end
end

.exit_if_not_defined(node) ⇒ Object 



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# File 'lib/domctl/config.rb', line 58

def self.exit_if_not_defined(node)
  settings = Domctl::Config.cluster_nodes[node]
  if settings.nil?
    $stderr.puts "ERROR: Xen host #{node} not defined in #{Domctl::Config.config_file}"
    exit 1
  end
end

.node_defined?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/domctl/config.rb', line 65

def self.node_defined?(node)
  settings = Domctl::Config.cluster_nodes[node]
  if settings.nil?
    return false
  end
  true
end

.validate ⇒ Object 



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# File 'lib/domctl/config.rb', line 8

def self.validate
  if not File.exist?(self.config_file)
    self.create_sample_config
    $stderr.puts
    $stderr.puts "domctl config file does not exist.\n"
    $stderr.puts "I have created an example one for you (#{config_file}). Configure it first."
    $stderr.puts
    exit 1
  end
  yaml = YAML.load_file(self.config_file)
  if not yaml or yaml['cluster'].nil? or not yaml['cluster'].is_a?(Hash)
    $stderr.puts
    $stderr.puts "Invalid config file found.\n"
    $stderr.puts
    exit 1
  end
end