[API] Add nodes/shutdown back

Author: estolfo

elasticsearch-api/lib/elasticsearch/api/actions/nodes/shutdown.rb

@@ -0,0 +1,39 @@
+module Elasticsearch
+  module API
+    module Nodes
+      module Actions
+
+        # Shutdown one or all nodes
+        #
+        # @example Shut down node named _Bloke_
+        #
+        #     client.nodes.shutdown node_id: 'Bloke'
+        #
+        # @option arguments [List] :node_id A comma-separated list of node IDs or names to perform the operation on; use
+        #                                   `_local` to shutdown the node you're connected to, leave empty to
+        #                                   shutdown all nodes
+        # @option arguments [Time] :delay Set the delay for the operation (default: 1s)
+        # @option arguments [Boolean] :exit Exit the JVM as well (default: true)
+        #
+        # @see http://elasticsearch.org/guide/reference/api/admin-cluster-nodes-shutdown/
+        #
+        def shutdown(arguments={})
+          method = HTTP_POST
+          path   = Utils.__pathify '_cluster/nodes', Utils.__listify(arguments[:node_id]), '_shutdown'
+
+          params = Utils.__validate_and_extract_params arguments, ParamsRegistry.get(__method__)
+          body   = nil
+
+          perform_request(method, path, params, body).body
+        end
+
+        # Register this action with its valid params when the module is loaded.
+        #
+        # @since 6.2.0
+        ParamsRegistry.register(:shutdown, [
+            :delay,
+            :exit ].freeze)
+      end
+    end
+  end
+end

elasticsearch-api/spec/elasticsearch/api/actions/nodes/shutdown_spec.rb

@@ -0,0 +1,59 @@
+require 'spec_helper'
+
+describe 'client.nodes#shutdown' do
+
+  let(:expected_args) do
+    [
+        'POST',
+        url,
+        params,
+        nil,
+        nil
+    ]
+  end
+
+  let(:url) do
+    '_cluster/nodes/_shutdown'
+  end
+
+  it 'performs the request' do
+    expect(client_double.nodes.shutdown).to eq({})
+  end
+
+  let(:params) do
+    {}
+  end
+
+  context 'when the node id is specified' do
+
+    let(:url) do
+      '_cluster/nodes/foo/_shutdown'
+    end
+
+    it 'performs the request' do
+      expect(client_double.nodes.shutdown(node_id: 'foo')).to eq({})
+    end
+  end
+
+  context 'when multiple node ids are specified as a list' do
+
+    let(:url) do
+      '_cluster/nodes/A,B,C/_shutdown'
+    end
+
+    it 'performs the request' do
+      expect(client_double.nodes.shutdown(node_id: ['A', 'B', 'C'])).to eq({})
+    end
+  end
+
+  context 'when multiple node ids are specified as a String' do
+
+    let(:url) do
+      '_cluster/nodes/A,B,C/_shutdown'
+    end
+
+    it 'performs the request' do
+      expect(client_double.nodes.shutdown(node_id: 'A,B,C')).to eq({})
+    end
+  end
+end