Class: RestDSL::ServiceBase

Inherits:
Object
  • Object
show all
Defined in:
lib/rest_dsl/service_base.rb

Overview

Base Class for defining a rest service DSL Object. Will look in a config file contained in the same directory as the service defining its headers and/or creds by environment. This file should be named such that it matches the service file name with a .yml ending.

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Class Attribute Details

.authentication=(value) ⇒ Object (writeonly)

Sets the attribute authentication

Parameters:

  • value —

    the value to set the attribute authentication to.



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# File 'lib/rest_dsl/service_base.rb', line 21

def authentication=(value)
  @authentication = value
end

.client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/rest_dsl/service_base.rb', line 20

def client
  @client
end

.config_file ⇒ Object

Returns the value of attribute config_file.



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# File 'lib/rest_dsl/service_base.rb', line 20

def config_file
  @config_file
end

.environment ⇒ Object

Returns the value of attribute environment.



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# File 'lib/rest_dsl/service_base.rb', line 20

def environment
  @environment
end

.file_name ⇒ Object (readonly)

Returns the value of attribute file_name.



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# File 'lib/rest_dsl/service_base.rb', line 20

def file_name
  @file_name
end

.headers ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 83

def headers
  @headers ||= config&.[](:headers) || {}
end

.last_response ⇒ Object (readonly)

Returns the value of attribute last_response.



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# File 'lib/rest_dsl/service_base.rb', line 20

def last_response
  @last_response
end

.service_name=(value) ⇒ Object (writeonly)

Sets the attribute service_name

Parameters:

  • value —

    the value to set the attribute service_name to.



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# File 'lib/rest_dsl/service_base.rb', line 21

def service_name=(value)
  @service_name = value
end

Class Method Details

.auth ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 79

def auth
  @authentication || config&.[](:credentials) || {}
end

.build_params(params) ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 53

def build_params(params)
  params ||= {}
  return "" if params.empty?
  "?#{params.map{|key,value| "#{key}=#{value}"}.join('&')}" unless params.empty?
end

.config ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 64

def config
  @config || reload_config
end

.execute_request(method, rest_method_call, *args, headers: nil, payload: nil, params: nil, url_args: nil, form_data: nil, text: nil, **hash_args, &block) ⇒ Object

The method wrapped by the methods generated by rest_call, these methods all follow this blueprint Can by wrapped manually to create more complicated logic than what’s supported by the default generators



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# File 'lib/rest_dsl/service_base.rb', line 38

def execute_request(method, rest_method_call, *args, headers: nil, payload: nil, params: nil, url_args: nil, form_data: nil, text: nil, **hash_args, &block)
  headers ||= self.headers
  url_args ||= {}
  service_name = "#{@service_name}/" unless @service_name&.empty?
  hash_args.merge!(auth)
  hash_args.merge!(payload: payload.to_json) if payload
  hash_args.merge!(payload: form_data) if form_data
  hash_args.merge!(payload: text) if text
  sub_url_args!(url_args, rest_method_call)
  arg_list = [method, "#{service_name}#{rest_method_call}#{build_params(params)}", headers]
  response = @client.execute(*arg_list, *args, **hash_args, &block)
  @last_response = response[:response]
  response[:parsed]
end

.inherited(clazz) ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 12

def self.inherited(clazz)
  clazz.class_eval do
    @file_name = caller_locations[2].path
    @config_file = @file_name.gsub('.rb', '.yml')
  end
end

.reload_config ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 73

def reload_config
  @config = Psych.load_file(@config_file)[@environment] if File.exist?(@config_file)
  @config = {} unless File.exist?(@config_file)
  @config
end

.rest_call(method, name, url_schema) ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 30

def rest_call(method, name, url_schema)
  self.class.define_method("#{method}_#{name}") do |*args, headers: nil, payload: nil, params: nil, url_args: nil, **hash_args|
    execute_request(method, url_schema.dup, *args, **hash_args, headers: headers, payload: payload, params: params, url_args: url_args)
  end
end

.sub_url_args!(arg_list, rest_method_call) ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 59

def sub_url_args!(arg_list, rest_method_call)
  # Given the protocol is handled by the client and not service_base, this should be a safe enough pattern in most cases

  arg_list.each{ |arg_name, value| rest_method_call.gsub!(":#{arg_name}", value) }
end

Instance Method Details

#service_name ⇒ Object 



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# File 'lib/rest_dsl/service_base.rb', line 88

def service_name
  self.class.instance_variable_get(:@service_name)
end