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Contents
require 'acfs/service/middleware'
module Acfs
# User {Acfs::Service} to define your services. That includes
# an identity used to identify the service in configuration files
# and middlewares the service uses.
#
# Configure your service URLs in a YAML file loaded in an
# initializer using the identity as a key:
#
# production:
# services:
# user_service_key: "http://users.service.org/base/path"
#
# @example
# class UserService < Acfs::Service
# identity :user_service_key
#
# use Acfs::Middleware::MessagePackDecoder
# end
#
class Service
attr_accessor :options
include Service::Middleware
# @api private
#
def initialize(options = {})
@options = options
end
# @api private
# @return [String]
#
def url_for(resource_class, options = {})
options.reverse_merge! self.options
url = self.class.base_url.to_s
url += "/#{(options[:path] || resource_class.name.pluralize.underscore).to_s}"
url += "/#{options[:suffix].to_s}" if options[:suffix]
url
end
class << self
# @api public
#
# @overload identity()
# Return configured identity key or derive key from class name.
#
# @return [Symbol] Service identity key.
#
# @overload identity(identity)
# Set identity key.
#
# @param [#to_s] identity New identity key.
# @return [Symbol] New set identity key.
#
def identity(identity = nil)
@identity = identity.to_s.to_sym unless identity.nil?
@identity ||= name.to_sym
end
# @api private
# @return [String]
#
def base_url
unless (base = Acfs::Configuration.current.locate identity)
raise ArgumentError, "#{identity} not configured. Add `locate '#{identity.to_s.underscore}', 'http://service.url/'` to your configuration."
end
base.to_s
end
end
end
end
Version data entries
71 entries across 71 versions & 1 rubygems