Module: Fog::Google::Shared

Included in:
Compute::Google::Mock, Compute::Google::Real, DNS::Google::Mock, DNS::Google::Real, Monitoring::Mock, Monitoring::Real, Fog::Google::SQL::Mock, Fog::Google::SQL::Real
Defined in:
lib/fog/google/core.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#api_url ⇒ Object (readonly)

Returns the value of attribute api_url.



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# File 'lib/fog/google/core.rb', line 26

def api_url
  @api_url
end

#api_version ⇒ Object (readonly)

Returns the value of attribute api_version.



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# File 'lib/fog/google/core.rb', line 26

def api_version
  @api_version
end

#project ⇒ Object (readonly)

Returns the value of attribute project.



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# File 'lib/fog/google/core.rb', line 26

def project
  @project
end

Instance Method Details

#build_excon_response(body, status = 200) ⇒ Excon::Response

Builds an Excon response

Parameters:

  • Response (Hash) —

    body

  • Response (Integer) —

    status

Returns:

  • (Excon::Response) —

    Excon response



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# File 'lib/fog/google/core.rb', line 182

def build_excon_response(body, status = 200)
  response = Excon::Response.new(:body => body, :status => status)
  if body && body.has_key?('error')
    msg = 'Google Cloud did not return an error message'

    if body['error'].kind_of?(Hash)
      response.status = body['error']['code']
      if body['error'].has_key?('errors')
        msg = body['error']['errors'].map{ |error| error['message'] }.join(', ')
      elsif body['error'].has_key?('message')
        msg = body['error']['message']
      end
    elsif body['error'].kind_of?(Array)
      msg = body['error'].map{ |error| error['code'] }.join(', ')
    end

    case response.status
      when 404
        raise Fog::Errors::NotFound.new(msg)
      else
        raise Fog::Errors::Error.new(msg)
    end
  end

  response
end

#create_signing_key(options) ⇒ Object

Creates a Google signing key



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

def create_signing_key(options)
  if options[:google_json_key_location] || options[:google_json_key_string]
    if options[:google_json_key_location]
      json_key_location = File.expand_path(options[:google_json_key_location])
      json_key = File.open(json_key_location, 'r') { |file| file.read }
    else
      json_key = options[:google_json_key_string]
    end

    json_key_hash = Fog::JSON.decode(json_key)
    unless json_key_hash.has_key?('client_email') || json_key_hash.has_key?('private_key')
      raise ArgumentError.new('Invalid Google JSON key')
    end

    options[:google_client_email] = json_key_hash['client_email']
    ::Google::APIClient::KeyUtils.load_from_pem(json_key_hash['private_key'], 'notasecret')
  elsif options[:google_key_location] || options[:google_key_string]
    if options[:google_key_location]
      google_key = File.expand_path(options[:google_key_location])
    else
      google_key = options[:google_key_string]
    end

    ::Google::APIClient::KeyUtils.load_from_pkcs12(google_key, 'notasecret')
  else
    raise ArgumentError.new('Missing required arguments: google_key_location, google_key_string, ' \
                            'google_json_key_location or google_json_key_string')
  end
end

#initialize_google_client(options) ⇒ Google::APIClient

Initializes the Google API Client

Parameters:

  • options (Hash) —

    Google API options

Options Hash (options):

  • :google_client_email (String) —

    A @developer.gserviceaccount.com email address to use

  • :google_key_location (String) —

    The location of a pkcs12 key file

  • :google_key_string (String) —

    The content of the pkcs12 key file

  • :google_json_key_location (String) —

    The location of a JSON key file

  • :google_json_key_string (String) —

    The content of the JSON key file

  • :google_api_scope_url (String) —

    The access scope URLs

  • :app_name (String) —

    The app name to set in the user agent

  • :app_version (String) —

    The app version to set in the user agent

  • :google_client (Google::APIClient) —

    Existing Google API Client

Returns:

  • (Google::APIClient) —

    Google API Client



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# File 'lib/fog/google/core.rb', line 56

def initialize_google_client(options)
  # NOTE: loaded here to avoid requiring this as a core Fog dependency
  begin
    require 'google/api_client'
  rescue LoadError => error
    Fog::Logger.warning('Please install the google-api-client gem before using this provider')
    raise error
  end

  # User can provide an existing Google API Client
  client = options[:google_client]
  return client unless client.nil?

  # Create a signing key
  signing_key = create_signing_key(options)

  # Validate required arguments
  unless options[:google_client_email]
    raise ArgumentError.new('Missing required arguments: google_client_email')
  end

  unless options[:google_api_scope_url]
    raise ArgumentError.new('Missing required arguments: google_api_scope_url')
  end

  # Create a new Google API Client
  self.new_pk12_google_client(
    options[:google_client_email],
    signing_key,
    options[:google_api_scope_url],
    options[:app_name],
    options[:app_version]
  )
end

#new_pk12_google_client(google_client_email, signing_key, google_api_scope_url, app_name = nil, app_version = nil) ⇒ Google::APIClient

Create a Google API Client with a user email and a pkcs12 key

Parameters:

  • google_client_email (String) —

    A @developer.gserviceaccount.com email address to use

  • signing_key (OpenSSL::PKey) —

    The private key for signing

  • google_api_scope_url (String) —

    Access scope URLs

  • app_name (String) (defaults to: nil) —

    The app name to set in the user agent

  • app_version (String) (defaults to: nil) —

    The app version to set in the user agent

Returns:

  • (Google::APIClient) —

    Google API Client



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# File 'lib/fog/google/core.rb', line 133

def new_pk12_google_client(google_client_email, signing_key, google_api_scope_url, app_name = nil, app_version = nil)
  application_name = app_name.nil? ? 'fog' : "#{app_name}/#{app_version || '0.0.0'} fog"
  api_client_options = {
    :application_name => application_name,
    :application_version => Fog::VERSION,
  }
  client = ::Google::APIClient.new(api_client_options)

  client.authorization = Signet::OAuth2::Client.new(
    {
      :audience => 'https://accounts.google.com/o/oauth2/token',
      :auth_provider_x509_cert_url => 'https://www.googleapis.com/oauth2/v1/certs',
      :client_x509_cert_url => "https://www.googleapis.com/robot/v1/metadata/x509/#{google_client_email}",
      :issuer => google_client_email,
      :scope => google_api_scope_url,
      :signing_key => signing_key,
      :token_credential_uri => 'https://accounts.google.com/o/oauth2/token',
    }
  )
  client.authorization.fetch_access_token!

  client
end

#request(api_method, parameters, body_object = nil) ⇒ Excon::Response

Executes a request and wraps it in a result object

Parameters:

  • api_method (Google::APIClient::Method) —

    The method object or the RPC name of the method being executed

  • parameters (Hash) —

    The parameters to send to the method

  • body_object (Hash) (defaults to: nil) —

    The body object of the request

Returns:

  • (Excon::Response) —

    The result from the API



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# File 'lib/fog/google/core.rb', line 164

def request(api_method, parameters, body_object = nil)
  client_parms = {
    :api_method => api_method,
    :parameters => parameters,
  }
  client_parms[:body_object] = body_object if body_object

  result = @client.execute(client_parms)

  build_excon_response(result.body.nil? || result.body.empty? ? nil : Fog::JSON.decode(result.body), result.status)
end

#shared_initialize(project, api_version, base_url) ⇒ void

This method returns an undefined value.

Initializes shared attributes

Parameters:

  • project (String) —

    Google Cloud Project

  • api_version (String) —

    Google API version

  • base_url (String) —

    Google API base url



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# File 'lib/fog/google/core.rb', line 35

def shared_initialize(project, api_version, base_url)
  @project = project
  @api_version = api_version
  @api_url = base_url + api_version + '/projects/'
end