Class: Fog::Service

Inherits:
Object
  • Object
show all
Defined in:
lib/fog/core/service.rb

Defined Under Namespace

Modules: Collections, NoLeakInspector Classes: Error, NotFound

Class Method Summary collapse

Class Method Details

.coerce_options(options) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 161

def coerce_options(options)
  options.each do |key, value|
    value_string = value.to_s.downcase
    if value.nil?
      options.delete(key)
    elsif value_string.to_i.to_s == value
      options[key] = value.to_i
    else
      options[key] = case value_string
                     when "false"
                       false
                     when "true"
                       true
                     else
                       value
                     end
    end
  end
end

.collection(new_collection, path = nil) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 148

def collection(new_collection, path = nil)
  collection_files << [path, new_collection]
  collections << new_collection
end

.collection_files ⇒ Object 



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# File 'lib/fog/core/service.rb', line 153

def collection_files
  @collection_files ||= []
end

.collections ⇒ Object 



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# File 'lib/fog/core/service.rb', line 157

def collections
  @collections ||= []
end

.fetch_credentials(_options) ⇒ Object

Deprecated. 


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# File 'lib/fog/core/service.rb', line 120

def fetch_credentials(_options)
  # attempt to load credentials from config file
  Fog.credentials.select { |key, _value| (recognized | requirements).include?(key) }
rescue ::Fog::Errors::LoadError
  # if there are no configured credentials, do nothing
  {}
end

.inherited(child) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 33

def inherited(child)
  child.class_eval <<-EOS, __FILE__, __LINE__
    class Error < Fog::Service::Error; end
    class NotFound < Fog::Service::NotFound; end

    module Collections
      include Fog::Service::Collections

      def service
        #{child}
      end
    end

    def self.service
      #{child}
    end
  EOS
end

.mocked_requests ⇒ Object 



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# File 'lib/fog/core/service.rb', line 181

def mocked_requests
  @mocked_requests ||= []
end

.model(new_model, path = nil) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 185

def model(new_model, path = nil)
  model_files << [path, new_model]
  models << [new_model]
end

.model_files ⇒ Object 



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# File 'lib/fog/core/service.rb', line 190

def model_files
  @model_files ||= []
end

.model_path(new_path) ⇒ Object

Note:

This path is used to require model and collection files



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# File 'lib/fog/core/service.rb', line 144

def model_path(new_path)
  @model_path = new_path
end

.models ⇒ Object 



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# File 'lib/fog/core/service.rb', line 194

def models
  @models ||= []
end

.new(config = {}) ⇒ Fog::Service::Provider::Real, Fog::Service::Provider::Mock

This method is abstract.

Subclass and implement real or mock code

Fog::Service is (unfortunately) both a builder class and the subclass for any fog service.

Creating a new instance using the builder will return either an instance of Fog::<Service>::<Provider>::Real or Fog::<Service>::<Provider>::Mock based on the value of Fog.mock? when the builder is used.

Each provider can require or recognize different settings (often prefixed with the providers name). These settings map to keys in the ~/.fog file.

Settings can be passed as either a Hash or an object that responds to config_service? with true. This object will be passed through unchanged to the Real or Mock service that is created. It is up to providers to adapt services to use these config objects.

Examples:

Minimal options (dependent on ~/.fog)

@service = Fog::Compute::Example.new # => <#Fog::Compute::Example::Real>

Mocked service

Fog.mock!
@service = Fog::Compute::Example.new # => <#Fog::Compute::Example::Mock>

Configured using many options (options merged into ~/.fog)

@options = {
  :example_username => "fog",
  :example_password => "fog"
}
@service = Fog::Compute::Example.new(@options)

Configured using external config object (~/.fog ignored completely)

@config = Fog::Example::Config.new(...)
@service = Fog::Compute::Example.new(@config)

Parameters:

  • config (Hash, #config_service?) (defaults to: {}) —

    Settings or an object used to build a service instance

Options Hash (config):

Returns:

  • (Fog::Service::Provider::Real) —

    if created while mocking is disabled

  • (Fog::Service::Provider::Mock) —

    if created while mocking is enabled

Raises:

  • (ArgumentError) —

    if a setting required by the provider was not passed in



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# File 'lib/fog/core/service.rb', line 94

def new(config = {})
  if config.respond_to?(:config_service?) && config.config_service?
    cleaned_settings = config
  else
    cleaned_settings = handle_settings(config)
  end
  setup_requirements

  svc = service
  if Fog.mocking?
    while svc != Fog::Service
      service::Mock.send(:include, svc::Collections)
      svc = svc.superclass
    end
    service::Mock.new(cleaned_settings)
  else
    while svc != Fog::Service
      service::Real.send(:include, svc::Collections)
      svc = svc.superclass
    end
    service::Real.send(:include, service::NoLeakInspector)
    service::Real.new(cleaned_settings)
  end
end

.recognized ⇒ Object 



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# File 'lib/fog/core/service.rb', line 232

def recognized
  @recognized ||= [:connection_options]
end

.recognizes(*args) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 228

def recognizes(*args)
  recognized.concat(args)
end

.request(new_request, path = nil) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 202

def request(new_request, path = nil)
  requests << [path, new_request]
end

.request_path(new_path) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 198

def request_path(new_path)
  @request_path = new_path
end

.requests ⇒ Object 



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# File 'lib/fog/core/service.rb', line 206

def requests
  @requests ||= []
end

.requirements ⇒ Object 



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# File 'lib/fog/core/service.rb', line 224

def requirements
  @requirements ||= []
end

.requires(*args) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 220

def requires(*args)
  requirements.concat(args)
end

.secrets(*args) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 210

def secrets(*args)
  if args.empty?
    @secrets ||= []
  else
    args.reduce(secrets) do |secrets, secret|
      secrets << :"@#{secret}"
    end
  end
end

.setup_requirements ⇒ Object 



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# File 'lib/fog/core/service.rb', line 128

def setup_requirements
  if superclass.respond_to?(:setup_requirements)
    superclass.setup_requirements
  end

  @required ||= false

  return false if @required

  require_models
  require_collections_and_define
  require_requests_and_mock
  @required = true
end

.validate_options(options) ⇒ Object 



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# File 'lib/fog/core/service.rb', line 236

def validate_options(options)
  keys = []
  options.each_pair do |key, value|
    keys << key unless value.nil?
  end
  missing = requirements - keys

  unless missing.empty?
    raise ArgumentError, "Missing required arguments: #{missing.join(', ')}"
  end

  unless recognizes.empty?
    unrecognized = options.keys - requirements - recognized
    unless unrecognized.empty?
      Fog::Logger.warning("Unrecognized arguments: #{unrecognized.join(', ')}")
    end
  end
end