Rename attributes -> inputs in profile metadata files (#4017)

Rename attributes -> inputs in profile metadata files

etc/deprecations.json

@@ -11,6 +11,11 @@
       "comment": "See #3853",
       "prefix": "The 'attribute' DSL keyword is being replaced by 'input' - please use it instead."
     },
+    "attrs_rename_in_metadata": {
+      "action": "ignore",
+      "comment": "See 3854",
+      "prefix": "Inputs should be specified by using the 'inputs' key in profile metadata, not 'attributes'."
+    },
     "aws_resources_in_resource_pack": {
       "comment": "See #3822",
       "action": "warn",

lib/inspec/input_registry.rb

@@ -205,14 +205,31 @@ module Inspec
 
     def bind_inputs_from_metadata(profile_name, profile_metadata_obj)
       # TODO: move this into a core plugin
-      # TODO: add deprecation stuff
       return if profile_metadata_obj.nil? # Metadata files are technically optional
 
-      if profile_metadata_obj.params.key?(:attributes) && profile_metadata_obj.params[:attributes].is_a?(Array)
-        profile_metadata_obj.params[:attributes].each do |input_orig|
+      if profile_metadata_obj.params.key?(:inputs)
+        raw_inputs = profile_metadata_obj.params[:inputs]
+      elsif profile_metadata_obj.params.key?(:attributes)
+        Inspec.deprecate(:attrs_rename_in_metadata, "Profile: '#{profile_name}'.")
+        raw_inputs = profile_metadata_obj.params[:attributes]
+      else
+        return
+      end
+
+      unless raw_inputs.is_a?(Array)
+        Inspec::Log.warn "Inputs must be defined as an Array in metadata files. Skipping definition from #{profile_name}."
+        return
+      end
+
+      raw_inputs.each { |i| handle_raw_input_from_metadata(i, profile_name) }
+    end
+
+    def handle_raw_input_from_metadata(input_orig, profile_name)
       input_options = input_orig.dup
       input_name = input_options.delete(:name)
-          input_options.merge!({ priority: 30, provider: :profile_metadata, file: File.join(profile_name, "inspec.yml") })
+      input_options[:provider] = :profile_metadata
+      input_options[:file] = File.join(profile_name, "inspec.yml")
+      input_options[:priority] ||= 30
       evt = Inspec::Input.infer_event(input_options)
 
       # Profile metadata may set inputs in other profiles by naming them.
@@ -221,15 +238,13 @@ module Inspec
         # Override priority to force this to win.  Allow user to set their own priority.
         evt.priority = input_orig[:priority] || 35
       end
-          find_or_register_input(input_name,
+      find_or_register_input(
+        input_name,
         profile_name,
         type: input_options[:type],
         required: input_options[:required],
-                                 event: evt)
-        end
-      elsif profile_metadata_obj.params.key?(:attributes)
-        Inspec::Log.warn "Inputs must be defined as an Array. Skipping current definition."
-      end
+        event: evt
+      )
     end
 
     #-------------------------------------------------------------#

test/functional/inputs_test.rb

@@ -80,11 +80,26 @@ describe "inputs" do
   end
 
   describe "run profile with metadata inputs" do
+
+    it "works when using the new 'inputs' key" do
+      cmd = "exec #{inputs_profiles_path}/metadata-basic"
+      result = run_inspec_process(cmd, json: true)
+      result.must_have_all_controls_passing
+      result.stderr.must_be_empty
+    end
+
+    it "works when using the legacy 'attributes' key" do
+      cmd = "exec #{inputs_profiles_path}/metadata-legacy"
+      result = run_inspec_process(cmd, json: true)
+      result.must_have_all_controls_passing
+      # Will eventually issue deprecation warning
+    end
+
     it "does not error when inputs are empty" do
       cmd = "exec "
       cmd += File.join(inputs_profiles_path, "metadata-empty")
       result = run_inspec_process(cmd, json: true)
-      result.stderr.must_include "WARN: Inputs must be defined as an Array. Skipping current definition."
+      result.stderr.must_include "WARN: Inputs must be defined as an Array in metadata files. Skipping definition from profile-with-empty-attributes."
       assert_exit_code 0, result
     end
 

test/unit/mock/profiles/inputs/metadata-basic/controls/metadata_controls.rb

@@ -0,0 +1,5 @@
+control 'test_control_01' do
+  describe attribute('test_01') do
+    it { should cmp 'test_value_01' }
+  end
+end

test/unit/mock/profiles/inputs/metadata-basic/inspec.yml

@@ -0,0 +1,11 @@
+name: metadata_basic
+title: InSpec Profile
+maintainer: The Authors
+copyright: The Authors
+copyright_email: you@example.com
+license: Apache-2.0
+summary: A profile with a single simple input defined in metadata
+version: 0.1.0
+inputs:
+- name: test_01
+  value: test_value_01

test/unit/mock/profiles/inputs/metadata-legacy/controls/metadata_controls.rb

@@ -0,0 +1,5 @@
+control 'test_control_01' do
+  describe attribute('test_01') do
+    it { should cmp 'test_value_01' }
+  end
+end

test/unit/mock/profiles/inputs/metadata-legacy/inspec.yml

@@ -0,0 +1,12 @@
+name: metadata_legacy
+title: InSpec Profile
+maintainer: The Authors
+copyright: The Authors
+copyright_email: you@example.com
+license: Apache-2.0
+summary: A profile with a single simple input defined in metadata, using the attributes key
+version: 0.1.0
+
+attributes: # Use legacy "attributes" key
+- name: test_01
+  value: test_value_01