[API] Adds capabilities endpoint

Author: picandocodigo

elasticsearch-api/lib/elasticsearch/api/actions/capabilities.rb

@@ -0,0 +1,56 @@
+# 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.
+#
+# Auto generated from build hash f284cc16f4d4b4289bc679aa1529bb504190fe80
+# @see https://github.com/elastic/elasticsearch/tree/main/rest-api-spec
+#
+module Elasticsearch
+  module API
+    module Actions
+      # Checks if the specified combination of method, API, parameters, and arbitrary capabilities are supported
+      # This functionality is Experimental and may be changed or removed
+      # completely in a future release. Elastic will take a best effort approach
+      # to fix any issues, but experimental features are not subject to the
+      # support SLA of official GA features.
+      #
+      # @option arguments [String] :method REST method to check (options: GET, HEAD, POST, PUT, DELETE)
+      # @option arguments [String] :path API path to check
+      # @option arguments [String] :parameters Comma-separated list of API parameters to check
+      # @option arguments [String] :capabilities Comma-separated list of arbitrary API capabilities to check
+      # @option arguments [Hash] :headers Custom HTTP headers
+      #
+      # @see https://www.elastic.co/guide/en/elasticsearch/reference/current/capabilities.html
+      #
+      def capabilities(arguments = {})
+        request_opts = { endpoint: arguments[:endpoint] || 'capabilities' }
+
+        arguments = arguments.clone
+        headers = arguments.delete(:headers) || {}
+
+        body   = nil
+
+        method = Elasticsearch::API::HTTP_GET
+        path   = '_capabilities'
+        params = Utils.process_params(arguments)
+
+        Elasticsearch::API::Response.new(
+          perform_request(method, path, params, body, headers, request_opts)
+        )
+      end
+    end
+  end
+end

elasticsearch-api/spec/elasticsearch/api/actions/capabilities_spec.rb

@@ -0,0 +1,35 @@
+# 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#capabilities' do
+  let(:expected_args) do
+    [
+      'GET',
+      '_capabilities',
+      {},
+      nil,
+      {},
+      { endpoint: 'capabilities' }
+    ]
+  end
+
+  it 'performs the request' do
+    expect(client_double.capabilities).to be_a Elasticsearch::API::Response
+  end
+end