Use cached DFC context

lib/data_food_consortium/connector/connector.rb

@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require_relative "context"
 require_relative "importer"
 
 module DataFoodConsortium

lib/data_food_consortium/connector/context.rb

@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+# Preload the DFC context.
+#
+# Similar to: https://github.com/ruby-rdf/json-ld-preloaded/
+module DataFoodConsortium
+  module Connector
+    class Context < JSON::LD::Context
+      VERSION_1_8 = JSON.parse <<~JSON
+        {
+          "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
+          "skos" : "http://www.w3.org/2004/02/skos/core#",
+          "dfc": "https://github.com/datafoodconsortium/ontology/releases/latest/download/DFC_FullModel.owl#",
+          "dc": "http://purl.org/dc/elements/1.1/#",
+          "dfc-b": "https://github.com/datafoodconsortium/ontology/releases/latest/download/DFC_BusinessOntology.owl#",
+          "dfc-p": "https://github.com/datafoodconsortium/ontology/releases/latest/download/DFC_ProductGlossary.owl#",
+          "dfc-t": "https://github.com/datafoodconsortium/ontology/releases/latest/download/DFC_TechnicalOntology.owl#",
+          "dfc-m": "https://github.com/datafoodconsortium/taxonomies/releases/latest/download/measures.rdf#",
+          "dfc-pt": "https://github.com/datafoodconsortium/taxonomies/releases/latest/download/productTypes.rdf#",
+          "dfc-f": "https://github.com/datafoodconsortium/taxonomies/releases/latest/download/facets.rdf#",
+          "ontosec": "http://www.semanticweb.org/ontologies/2008/11/OntologySecurity.owl#",
+          "dfc-p:hasUnit":{ "@type":"@id" },
+          "dfc-b:hasUnit":{ "@type":"@id" },
+          "dfc-b:hasQuantity":{ "@type":"@id" },
+          "dfc-p:hasType":{ "@type":"@id" },
+          "dfc-b:hasType":{ "@type":"@id" },
+          "dfc-b:references":{ "@type":"@id" },
+          "dfc-b:referencedBy":{ "@type":"@id" },
+          "dfc-b:offeres":{ "@type":"@id" },
+          "dfc-b:supplies":{ "@type":"@id" },
+          "dfc-b:defines":{ "@type":"@id" },
+          "dfc-b:affiliates":{ "@type":"@id" },
+          "dfc-b:hasCertification":{ "@type":"@id" },
+          "dfc-b:manages":{ "@type":"@id" },
+          "dfc-b:offeredThrough":{ "@type":"@id" },
+          "dfc-b:hasBrand":{ "@type":"@id" },
+          "dfc-b:hasGeographicalOrigin":{ "@type":"@id" },
+          "dfc-b:hasClaim":{ "@type":"@id" },
+          "dfc-b:hasAllergenDimension":{ "@type":"@id" },
+          "dfc-b:hasNutrientDimension":{ "@type":"@id" },
+          "dfc-b:hasPhysicalDimension":{ "@type":"@id" },
+          "dfc:owner":{ "@type":"@id" },
+          "dfc-t:hostedBy":{ "@type":"@id" },
+          "dfc-t:hasPivot":{ "@type":"@id" },
+          "dfc-t:represent":{ "@type":"@id" }
+        }
+      JSON
+
+      add_preloaded("http://www.datafoodconsortium.org/") { parse(VERSION_1_8) }
+      alias_preloaded(
+        "http://static.datafoodconsortium.org/ontologies/context.json",
+        "http://www.datafoodconsortium.org/"
+      )
+    end
+  end
+end

spec/base_spec_helper.rb

@@ -91,13 +91,6 @@ RSpec.configure do |config|
     expectations.syntax = :expect
   end
 
-  config.around(:each, vcr: true) do |example|
-    # The DFC Connector fetches the context when loaded.
-    VCR.use_cassette("dfc-context") do
-      example.run
-    end
-  end
-
   # Enable caching in any specs tagged with `caching: true`.
   config.around(:each, :caching) do |example|
     caching = ActionController::Base.perform_caching

spec/lib/data_food_consortium/connector/importer_spec.rb

@@ -3,7 +3,7 @@
 require 'spec_helper'
 require Rails.root.join('lib/data_food_consortium/connector/connector')
 
-describe DataFoodConsortium::Connector::Importer, vcr: true do
+describe DataFoodConsortium::Connector::Importer do
   let(:connector) { DataFoodConsortium::Connector::Connector.instance }
   let(:enterprise) do
     DataFoodConsortium::Connector::Enterprise.new(