Class: BigBrother::Configuration

Inherits:
Object
  • Object
show all
Defined in:
lib/big_brother/configuration.rb

Constant Summary collapse

GLOBAL_CONFIG_KEY = 
'_big_brother'

Class Method Summary collapse

Class Method Details

._apply_defaults(defaults_hash, settings_hash) ⇒ Object 



32
33
34
35
36
37
 
# File 'lib/big_brother/configuration.rb', line 32

def self._apply_defaults(defaults_hash, settings_hash)
  return settings_hash unless defaults_hash
  defaults_hash.merge(settings_hash) do |key, oldval, newval|
    oldval.is_a?(Hash) && newval.is_a?(Hash) ? _apply_defaults(oldval, newval) : newval
  end
end

._deeply_symbolize_keys(value) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
 
# File 'lib/big_brother/configuration.rb', line 19

def self._deeply_symbolize_keys(value)
  if value.is_a?(Hash)
    value.inject({}) do |symbolized_hash, (hash_key, hash_value)|
      symbolized_hash[hash_key.to_sym] = _deeply_symbolize_keys(hash_value)
      symbolized_hash
    end
  elsif value.is_a?(Array)
    value.map { |item| _deeply_symbolize_keys(item) }
  else
    value
  end
end

._valid?(config) ⇒ Boolean

Returns:

  • (Boolean) 


39
40
41
42
43
44
45
46
47
48
49
50
51
 
# File 'lib/big_brother/configuration.rb', line 39

def self._valid?(config)
  schema_path = File.join(File.dirname(__FILE__), "../resources", "config_schema.yml")
  schema = YAML.load_file(schema_path)
  validator = Kwalify::Validator.new(schema)
  errors = validator.validate(config)
  valid = !(errors && !errors.empty?)

  unless valid
    errors.each { |err| BigBrother.logger.info("- [#{err.path}] #{err.message}") }
  end

  valid
end

.from_file(config_file) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
17
 
# File 'lib/big_brother/configuration.rb', line 5

def self.from_file(config_file)
  config = YAML.load_file(config_file)
  return {} unless _valid?(config)

  configured_clusters = config.fetch("clusters")
  defaults = config.delete(GLOBAL_CONFIG_KEY)

  configured_clusters.inject({}) do |clusters, cluster|
    cluster_details = _apply_defaults(defaults, cluster)
    cluster_name    = cluster.fetch("cluster_name")
    clusters.merge(cluster_name => BigBrother::ClusterFactory.create_cluster(cluster_name, _deeply_symbolize_keys(cluster_details)))
  end
end