Class: Rubber::Dns::Aws

Inherits:
Base
  • Object
show all
Defined in:
lib/rubber/dns/aws.rb

Instance Attribute Summary collapse

Attributes inherited from Base

#env

Instance Method Summary collapse

Methods inherited from Base

#destroy, #host_records_equal?, #setup_opts, #up_to_date, #update

Constructor Details

#initialize(env) ⇒ Aws

Returns a new instance of Aws.



11
12
13
14
15
 
# File 'lib/rubber/dns/aws.rb', line 11

def initialize(env)
  super(env)
  creds = { :provider => 'aws', :aws_access_key_id => env.access_key, :aws_secret_access_key => env.access_secret }
  @client = ::Fog::DNS.new(creds)
end

Instance Attribute Details

#client ⇒ Object

Returns the value of attribute client.



9
10
11
 
# File 'lib/rubber/dns/aws.rb', line 9

def client
  @client
end

Instance Method Details

#all_hosts(zone) ⇒ Object 



110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
 
# File 'lib/rubber/dns/aws.rb', line 110

def all_hosts(zone)
  hosts = []
  opts = {}
  has_more = true
  
  while has_more
    all_hosts = zone.records.all(opts)
    has_more = all_hosts.is_truncated
    opts = {:name => all_hosts.next_record_name,
            :type => all_hosts.next_record_type
    }
    hosts.concat(all_hosts)
  end
  
  return hosts        
end

#create_host_record(opts = {}) ⇒ Object 



155
156
157
158
159
 
# File 'lib/rubber/dns/aws.rb', line 155

def create_host_record(opts = {})
  opts = setup_opts(opts, [:host, :data, :domain, :type, :ttl])
  zone = find_or_create_zone(opts[:domain])
  zone.records.create(opts_to_host(opts))
end

#denormalize_name(name, domain) ⇒ Object 



30
31
32
33
34
35
36
37
38
39
40
41
 
# File 'lib/rubber/dns/aws.rb', line 30

def denormalize_name(name, domain)
  if ! name || name.strip.empty?
    name = "#{domain}"
  else
    name = "#{name}.#{domain}"
  end

  name = "#{name}." 
  domain = "#{domain}."
  
  return name, domain
end

#destroy_host_record(opts = {}) ⇒ Object 



161
162
163
164
165
166
167
 
# File 'lib/rubber/dns/aws.rb', line 161

def destroy_host_record(opts = {})
  opts = setup_opts(opts, [:host, :domain])

  find_hosts(opts).each do |h|
    h.destroy || raise("Failed to destroy #{h.hostname}")
  end
end

#find_host_records(opts = {}) ⇒ Object 



148
149
150
151
152
153
 
# File 'lib/rubber/dns/aws.rb', line 148

def find_host_records(opts = {})
  hosts = find_hosts(opts)
  result = hosts.collect {|h| host_to_opts(h).merge(:domain => opts[:domain]) }

  result
end

#find_hosts(opts = {}) ⇒ Object 



128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
 
# File 'lib/rubber/dns/aws.rb', line 128

def find_hosts(opts = {})
  opts = setup_opts(opts, [:host, :domain])

  zone = find_or_create_zone(opts[:domain])
  host = opts_to_host(opts)
  
  if opts[:host] && opts[:host] != '*'
    found_host = zone.records.all(:name => host[:name], :type => host[:type], :max_items => 1).first
    found_host = nil if found_host && found_host.name != "#{host[:name]}." && found_host.type != host[:type]
    hosts = Array(found_host)
  else
    hosts = all_hosts(zone)
  end
  
  hosts = hosts.select {|h| h.name == host[:name] } if opts.has_key?(:host) && opts[:host] != '*'
  hosts = hosts.select {|h| h.type == host[:type] } if opts.has_key?(:type) && opts[:type] != '*'
  
  hosts
end

#find_or_create_zone(domain) ⇒ Object 



102
103
104
105
106
107
108
 
# File 'lib/rubber/dns/aws.rb', line 102

def find_or_create_zone(domain)
  zone = @client.zones.all.find {|z| z.domain =~ /^#{domain}\.?/}
  if ! zone
    zone = @client.zones.create(:domain => domain)
  end
  return zone
end

#host_to_opts(host) ⇒ Object

Convert from fog/aws model to rubber option hash that represents a dns record



44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/rubber/dns/aws.rb', line 44

def host_to_opts(host)
  opts = {}
  
  opts[:host] ||= host.name || ''
  opts[:domain] ||= host.zone.domain
  opts[:host], opts[:domain] = normalize_name(opts[:host], opts[:domain])
  
  opts[:type] ||= host.type
  opts[:ttl] ||= host.ttl.to_i if host.ttl
  
  opts[:data] ||= []
  if host.type =~ /MX/i
    host.value.each do |val|
      parts = val.split(" ")
      opts[:data] << {'priority' => parts[0], 'value' => parts[1]}
    end
  elsif ! host.alias_target.nil?
    # Convert from camel-case to snake-case for Route 53 ALIAS records
    # so the match the rubber config format.
    opts[:data] << {
      'hosted_zone_id' => host.alias_target['HostedZoneId'],
      'dns_name' => host.alias_target['DNSName'].split('.')[0..-1].join('.')
    }
    # Route 53 ALIAS records do not have a TTL, so delete the rubber-supplied default value.
    opts.delete(:ttl)
  else
    opts[:data].concat(Array(host.value))
  end

  return opts
end

#normalize_name(name, domain) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
28
 
# File 'lib/rubber/dns/aws.rb', line 17

def normalize_name(name, domain)
  domain = domain.gsub(/\.$/, "")

  if name
    name = name.gsub(/\.$/, "")
    name = name.gsub(/.?#{domain}$/, "")
    # Route 53 encodes asterisks in their ASCII octal representation.
    name = name.gsub("\\052", "*")
  end
  
  return name, domain
end

#opts_to_host(opts) ⇒ Object

Convert from rubber option hash that represents a dns record to fog/aws model



77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
 
# File 'lib/rubber/dns/aws.rb', line 77

def opts_to_host(opts)
  host = {}
  host[:name], domain = denormalize_name(opts[:host], opts[:domain])
  
  host[:type] =  opts[:type]
  host[:ttl] = opts[:ttl] if opts[:ttl]

  if opts[:data]
    # Route 53 requires the priority to be munged with the data value.
    if host[:type] =~ /MX/i
      host[:value] = opts[:data].collect {|o| "#{o[:priority]} #{o[:value]}"}
    elsif opts[:data].first.is_a?(Hash)
      # Route 53 allows creation of ALIAS records, which will always be
      # a Hash in the DNS config.  ALIAS records cannot have a TTL.
      host[:alias_target] = opts[:data].first
      host.delete(:value)
      host.delete(:ttl)
    else
      host[:value] = opts[:data]
    end
  end

  return host
end

#update_host_record(old_opts = {}, new_opts = {}) ⇒ Object 



169
170
171
172
173
174
175
176
177
 
# File 'lib/rubber/dns/aws.rb', line 169

def update_host_record(old_opts={}, new_opts={})
  old_opts = setup_opts(old_opts, [:host, :domain, :type])
  new_opts = setup_opts(new_opts, [:host, :domain, :type, :data])
  new_host = opts_to_host(new_opts)

  host = find_hosts(old_opts).first
  result = host.modify(new_host)
  result || raise("Failed to update host #{host.name}, #{host.errors.full_messages.join(', ')}")
end