[API] Adds project namespace and experimental tags endpoint

Author: picandocodigo

elasticsearch-api/lib/elasticsearch/api.rb

@@ -71,6 +71,7 @@ def perform_request(method, path, params = {}, body = nil, headers = nil, reques
                       :migration,
                       :machine_learning,
                       :nodes,
+                      :project,
                       :query_rules,
                       :search_application,
                       :searchable_snapshots,

elasticsearch-api/lib/elasticsearch/api/actions/project/tags.rb

@@ -0,0 +1,65 @@
+# 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.
+#
+# This code was automatically generated from the Elasticsearch Specification
+# See https://github.com/elastic/elasticsearch-specification
+# See Elasticsearch::ES_SPECIFICATION_COMMIT for commit hash.
+module Elasticsearch
+  module API
+    module Project
+      module Actions
+        # Return tags defined for the project
+        # 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 [Boolean] :error_trace When set to `true` Elasticsearch will include the full stack trace of errors
+        #  when they occur.
+        # @option arguments [String, Array<String>] :filter_path Comma-separated list of filters in dot notation which reduce the response
+        #  returned by Elasticsearch.
+        # @option arguments [Boolean] :human When set to `true` will return statistics in a format suitable for humans.
+        #  For example `"exists_time": "1h"` for humans and
+        #  `"exists_time_in_millis": 3600000` for computers. When disabled the human
+        #  readable values will be omitted. This makes sense for responses being consumed
+        #  only by machines.
+        # @option arguments [Boolean] :pretty If set to `true` the returned JSON will be "pretty-formatted". Only use
+        #  this option for debugging only.
+        # @option arguments [Hash] :headers Custom HTTP headers
+        #
+        # @see
+        #
+        def tags(arguments = {})
+          request_opts = { endpoint: arguments[:endpoint] || 'project.tags' }
+
+          arguments = arguments.clone
+          headers = arguments.delete(:headers) || {}
+
+          body = nil
+
+          method = Elasticsearch::API::HTTP_GET
+          path   = '_project/tags'
+          params = Utils.process_params(arguments)
+
+          Elasticsearch::API::Response.new(
+            perform_request(method, path, params, body, headers, request_opts)
+          )
+        end
+      end
+    end
+  end
+end

elasticsearch-api/spec/unit/actions/project/tags_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.project#tags' do
+  let(:expected_args) do
+    [
+      'GET',
+      '_project/tags',
+      {},
+      nil,
+      {},
+      { endpoint: 'project.tags' }
+    ]
+  end
+
+  it 'performs the request' do
+    expect(client_double.project.tags).to be_a Elasticsearch::API::Response
+  end
+end