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.



5
6
7
8
9
 
# File 'lib/fezzik/host_task.rb', line 5

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

Instance Attribute Details

#roles ⇒ Object

Returns the value of attribute roles.



3
4
5
 
# File 'lib/fezzik/host_task.rb', line 3

def roles
  @roles
end

Instance Method Details

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



11
12
13
14
 
# File 'lib/fezzik/host_task.rb', line 11

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

#execute(args = nil) ⇒ Object 



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/fezzik/host_task.rb', line 16

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

  if @roles.empty?
    hosts = Fezzik.get(:domain).map { |domain| "#{Fezzik.get(:user)}@#{domain}" }
    @@connection_pool ||= Weave.connect(hosts)
    @host_actions.each do |action|
      begin
        @@connection_pool.execute(:args => [self, args], &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.connect(hosts)
        @host_actions.each do |action|
          begin
            @@role_connection_pools[role].execute(:args => [self, args], &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