[API] Adds features.get_features API endpoint

Author: picandocodigo

elasticsearch-api/lib/elasticsearch/api.rb

@@ -72,7 +72,8 @@ def self.included(base)
                 Elasticsearch::API::Tasks,
                 Elasticsearch::API::Cat,
                 Elasticsearch::API::Remote,
-                Elasticsearch::API::DanglingIndices
+                Elasticsearch::API::DanglingIndices,
+                Elasticsearch::API::Features
     end
 
     # The serializer class

elasticsearch-api/lib/elasticsearch/api/actions/features/get_features.rb

@@ -0,0 +1,51 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+module Elasticsearch
+  module API
+    module Features
+      module Actions
+        # Returns a list of features which can be snapshotted in this cluster.
+        #
+        # @option arguments [Time] :master_timeout Explicit operation timeout for connection to master node
+        # @option arguments [Hash] :headers Custom HTTP headers
+        #
+        # @see https://www.elastic.co/guide/en/elasticsearch/reference/7.12/modules-snapshots.html
+        #
+        def get_features(arguments = {})
+          headers = arguments.delete(:headers) || {}
+
+          arguments = arguments.clone
+
+          method = Elasticsearch::API::HTTP_GET
+          path   = "_features"
+          params = Utils.__validate_and_extract_params arguments, ParamsRegistry.get(__method__)
+
+          body = nil
+          perform_request(method, path, params, body, headers).body
+        end
+
+        # Register this action with its valid params when the module is loaded.
+        #
+        # @since 6.2.0
+        ParamsRegistry.register(:get_features, [
+          :master_timeout
+        ].freeze)
+      end
+    end
+  end
+end

elasticsearch-api/lib/elasticsearch/api/actions/features/params_registry.rb

@@ -0,0 +1,60 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+module Elasticsearch
+  module API
+    module Features
+      module Actions
+        module ParamsRegistry
+          extend self
+
+          # A Mapping of all the actions to their list of valid params.
+          #
+          # @since 6.1.1
+          PARAMS = {}
+
+          # Register an action with its list of valid params.
+          #
+          # @example Register the action.
+          #   ParamsRegistry.register(:benchmark, [ :verbose ])
+          #
+          # @param [ Symbol ] action The action to register.
+          # @param [ Array[Symbol] ] valid_params The list of valid params.
+          #
+          # @since 6.1.1
+          def register(action, valid_params)
+            PARAMS[action.to_sym] = valid_params
+          end
+
+          # Get the list of valid params for a given action.
+          #
+          # @example Get the list of valid params.
+          #   ParamsRegistry.get(:benchmark)
+          #
+          # @param [ Symbol ] action The action.
+          #
+          # @return [ Array<Symbol> ] The list of valid params for the action.
+          #
+          # @since 6.1.1
+          def get(action)
+            PARAMS.fetch(action, [])
+          end
+        end
+      end
+    end
+  end
+end

elasticsearch-api/lib/elasticsearch/api/namespace/features.rb

@@ -0,0 +1,36 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+module Elasticsearch
+  module API
+    module Features
+      module Actions; end
+
+      # Client for the "features" namespace (includes the {Features::Actions} methods)
+      #
+      class FeaturesClient
+        include Common::Client, Common::Client::Base, Features::Actions
+      end
+
+      # Proxy method for {FeaturesClient}, available in the receiving object
+      #
+      def features
+        @features ||= FeaturesClient.new(self)
+      end
+    end
+  end
+end

elasticsearch-api/spec/elasticsearch/api/actions/features/get_features_spec.rb

@@ -0,0 +1,34 @@
+# Licensed to Elasticsearch B.V. under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch B.V. licenses this file to you under
+# the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+require 'spec_helper'
+
+describe 'client.featues#get_features' do
+  let(:expected_args) do
+    [
+        'GET',
+        '_features',
+        {},
+        nil,
+        {}
+    ]
+  end
+
+  it 'performs the request' do
+    expect(client_double.features.get_features).to eq({})
+  end
+end