Class: Description

Inherits:
Object show all
Defined in:
lib/maws/description.rb

Direct Known Subclasses

EBS, EC2, ELB, RDS

Defined Under Namespace

Classes: EBS, EC2, ELB, RDS

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(description) ⇒ Description

Returns a new instance of Description.



18
19
20
 
# File 'lib/maws/description.rb', line 18

def initialize(description)
  raise "use #{self.class}::create instead"
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args, &block) ⇒ Object 



14
15
16
 
# File 'lib/maws/description.rb', line 14

def method_missing(method_name, *args, &block)
  description[method_name.to_sym]
end

Instance Attribute Details

#description ⇒ Object (readonly)

Returns the value of attribute description.



2
3
4
 
# File 'lib/maws/description.rb', line 2

def description
  @description
end

Class Method Details

.create(description) ⇒ Object 



4
5
6
7
8
 
# File 'lib/maws/description.rb', line 4

def self.create(description)
  service = description[:service]
  klass = Description.const_get("#{service.to_s.upcase}")
  klass.new(description)
end

Instance Method Details

#[](key) ⇒ Object 



10
11
12
 
# File 'lib/maws/description.rb', line 10

def [](key)
  description[key]
end

#create_instance(maws, config) ⇒ Object 



70
71
72
73
74
 
# File 'lib/maws/description.rb', line 70

def create_instance(maws, config)
  instance = Instance.create(maws, config, prefix, zone, role, index, {:service => service, :name => name, :region => region })
  instance.description = self
  instance
end

#index ⇒ Object 



60
61
62
63
 
# File 'lib/maws/description.rb', line 60

def index
  md = name.match(name_re)
  md[4].to_i if md
end

#logical_zone ⇒ Object 



65
66
67
68
 
# File 'lib/maws/description.rb', line 65

def logical_zone
  md = name.match(name_re)
  md[5] if md
end

#name_re ⇒ Object 



39
40
41
 
# File 'lib/maws/description.rb', line 39

def name_re
  /^(.+\.)?(.+)-(.+)-(\d+)(\w)?$/
end

#physical_zone ⇒ Object

zone where the instance really lives this has meaning for RDS with multi-zone = true and for EC2 with region scope



30
31
32
 
# File 'lib/maws/description.rb', line 30

def physical_zone
  region_zone[-1,1]
end

#prefix ⇒ Object 



43
44
45
46
47
 
# File 'lib/maws/description.rb', line 43

def prefix
  # old.foo-test-app-1z => old
  md = name.match(name_re)
  md[1].to_s[0...-1] if md
end

#profile ⇒ Object 



49
50
51
52
53
 
# File 'lib/maws/description.rb', line 49

def profile
  # foo-test-app-1z => foo-test
  md = name.match(name_re)
  md[2] if md
end

#region ⇒ Object 



34
35
36
37
 
# File 'lib/maws/description.rb', line 34

def region
  # us-east-1a => us-east-1
  region_zone[0...-1]
end

#role ⇒ Object 



55
56
57
58
 
# File 'lib/maws/description.rb', line 55

def role
  md = name.match(name_re)
  md[3] if md
end

#zone ⇒ Object

logical zone (what the zone is according to maws categorization)



23
24
25
26
 
# File 'lib/maws/description.rb', line 23

def zone
  # us-east-1a => a
  logical_zone
end