Class: Fezzik::HostTask

Inherits:
Rake::Task
  • Object
show all
Defined in:
lib/fezzik/host_task.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(task_name, app) ⇒ HostTask

Returns a new instance of HostTask.



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# File 'lib/fezzik/host_task.rb', line 5

def initialize(task_name, app)
  super
  @host_actions = []
  @roles = []
  @weave_options = {}
end

Instance Attribute Details

#roles ⇒ Object

Returns the value of attribute roles.



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# File 'lib/fezzik/host_task.rb', line 3

def roles
  @roles
end

#weave_options ⇒ Object

Returns the value of attribute weave_options.



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# File 'lib/fezzik/host_task.rb', line 3

def weave_options
  @weave_options
end

Instance Method Details

#enhance(deps = nil, &block) ⇒ Object 



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# File 'lib/fezzik/host_task.rb', line 12

def enhance(deps = nil, &block)
  @host_actions << block if block_given?
  super(deps)
end

#execute(args = nil) ⇒ Object 



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# File 'lib/fezzik/host_task.rb', line 17

def execute(args = nil)
  return if Rake.application.options.dryrun

  merged_weave_options = Fezzik.default_weave_options.merge(@weave_options).merge(:args => [self, args])

  if @roles.empty?
    hosts = Fezzik.get(:domain).map { |domain| "#{Fezzik.get(:user)}@#{domain}" }
    @@connection_pool ||= Weave::ConnectionPool.new
    @host_actions.each do |action|
      begin
        @@connection_pool.execute_with(hosts, merged_weave_options, &action)
      rescue Weave::Error => e
        STDERR.puts "Error running command in HostTask '#{@name}':"
        abort e.message
      end
    end
  else
    @roles.each do |role|
      Fezzik.with_role(role) do
        hosts = Fezzik.get(:domain).map { |domain| "#{Fezzik.get(:user)}@#{domain}" }
        @@role_connection_pools ||= {}
        @@role_connection_pools[role] ||= Weave::ConnectionPool.new
        @host_actions.each do |action|
          begin
            @@role_connection_pools[role].execute_with(hosts, merged_weave_options, &action)
          rescue Weave::Error => e
            STDERR.puts "Error running command in HostTask '#{@name}' with role '#{role}':"
            abort e.message
          end
        end
      end
    end
  end
end