Add node attributes json generation

The function will export all the node attribute to a json file at the beginning of the install phase.
Doing so other scripts can read the file instead of point directly to the default.rb

Signed-off-by: Francesco Giordano <[email protected]>

Author: francesco-giordano

cookbooks/aws-parallelcluster-install/recipes/install.rb

@@ -20,6 +20,8 @@
 
 return if node['conditions']['ami_bootstrapped']
 
+node_attributes 'Generate export in json at /etc/chef/node_attributes.json'
+
 include_recipe 'aws-parallelcluster-install::base'
 include_recipe "aws-parallelcluster-install::clusterstatusmgtd"
 include_recipe "aws-parallelcluster-install::intel"

cookbooks/aws-parallelcluster-install/resources/node_attributes/node_attributes.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# Copyright:: 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License").
+# You may not use this file except in compliance with the License.
+# A copy of the License is located at
+#
+# http://aws.amazon.com/apache2.0/
+#
+# or in the "LICENSE.txt" file accompanying this file.
+# This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied.
+# See the License for the specific language governing permissions and limitations under the License.
+
+provides :node_attributes
+unified_mode true
+default_action :generate_json
+
+action :generate_json do
+  json_content = Chef::JSONCompat.to_json_pretty(node)
+  file "/etc/chef/node_attributes.json" do
+    content "#{json_content}"
+    owner 'root'
+    mode '0644'
+  end
+end

test/resources/controls/aws_parallelcluster_install/node_attributes_spec.rb

@@ -0,0 +1,10 @@
+control 'node_attributes' do
+  title 'Test the generation of the node attributes json file'
+
+  describe file('/etc/chef/node_attributes.json') do
+    it { should exist }
+    its('content') { should match(/^    "cluster": \{$/) }
+    # its('content_as_json') { should include('cluster') }
+    # its('content_as_json') { should include('cluster' => { 'base_dir' => '/opt/parallelcluster' }) }
+  end
+end