Add community prometheus cookbook

cookbooks/prometheus/resources/config.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+provides :prometheus_config
+unified_mode true
+
+use '_partial/_common'
+use '_partial/_prometheus'
+
+property :template_cookbook, String, default: 'prometheus'
+property :template_source, String, default: 'prometheus.yml.erb'
+property :rule_filenames, [Array, nil], default: nil
+property :global_config, Hash, default: {
+  'scrape_interval' => '60s',
+  'evaluation_interval' => '60s',
+}
+property :allow_external_config, [true, false], default: false
+
+default_action :create
+
+action :create do
+  config_resource = new_resource
+
+  with_run_context :root do
+    template config_resource.config_file do
+      cookbook config_resource.template_cookbook
+      source config_resource.template_source
+      mode '0644'
+      owner config_resource.user
+      group config_resource.group
+      variables(
+        global_config: config_resource.global_config,
+        jobs: {},
+        rule_filenames: config_resource.rule_filenames
+      )
+      not_if { config_resource.allow_external_config }
+    end
+  end
+end
+
+action :delete do
+  file new_resource.config_file do
+    action :delete
+  end
+end