Module: LHS::Service::Endpoints

Extended by:
ActiveSupport::Concern
Included in:
LHS::Service
Defined in:
lib/lhs/concerns/service/endpoints.rb

Overview

An endpoint is an url that leads to a backend resource. A service can contain multiple endpoints. The endpoint that is used to request data is choosen based on the provided parameters.

Defined Under Namespace

Modules: ClassMethods

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#endpoints ⇒ Object

Returns the value of attribute endpoints.



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# File 'lib/lhs/concerns/service/endpoints.rb', line 12

def endpoints
  @endpoints
end

Instance Method Details

#compute_url!(params) ⇒ Object

Computes the url from params by identifiying endpoint and compiles it if necessary. Id in params is threaded in a special way.



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# File 'lib/lhs/concerns/service/endpoints.rb', line 58

def compute_url!(params)
  endpoint = find_endpoint(params)
  url = endpoint.compile(params)
  endpoint.remove_interpolated_params!(params)
  url
end

#find_endpoint(params = {}) ⇒ Object

Find an endpoint based on the provided parameters. If no parameters are provided it finds the base endpoint otherwise it finds the endpoint that matches the parameters best.



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# File 'lib/lhs/concerns/service/endpoints.rb', line 43

def find_endpoint(params = {})
  endpoint = find_best_endpoint(params) if params && params.keys.count > 0
  endpoint ||= find_base_endpoint
  endpoint
end

#initialize ⇒ Object 



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# File 'lib/lhs/concerns/service/endpoints.rb', line 35

def initialize
  self.endpoints = []
  super
end

#sanity_check(endpoint) ⇒ Object

Prevent clashing endpoints.



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# File 'lib/lhs/concerns/service/endpoints.rb', line 50

def sanity_check(endpoint)
  placeholders = endpoint.placeholders
  fail 'Clashing endpoints.' if endpoints.any? { |e| e.placeholders.sort == placeholders.sort }
end