Support storage section

Signed-off-by: Kenji Okimoto <okimoto@clear-code.com>

app/controllers/concerns/setting_concern.rb

@@ -11,6 +11,7 @@ module SettingConcern
   def show
     @setting = target_class.new(initial_params)
     @buffer = @setting.create_buffer
+    @storage = @setting.create_storage
     @parser = @setting.create_parser
     @formatter = @setting.create_formatter
     @_used_param = {}
@@ -22,6 +23,7 @@ module SettingConcern
     owned_keys = %i(parse_type format_type)
     @setting = target_class.new(initial_params.merge(params.permit(*owned_keys).slice(*owned_keys)))
     @buffer = @setting.create_buffer
+    @storage = @setting.create_storage
     @parser = @setting.create_parser
     @formatter = @setting.create_formatter
     render "shared/settings/show"

app/models/concerns/fluentd/setting/plugin_parameter.rb

@@ -33,6 +33,10 @@ class Fluentd
         self.class._sections.key?(:buffer)
       end
 
+      def have_storage_section?
+        self.class._sections.key?(:storage)
+      end
+
       def have_parse_section?
         self.class._sections.key?(:parse)
       end
@@ -47,6 +51,12 @@ class Fluentd
         buffer_class.new(buffer["0"].except("type"))
       end
 
+      def create_storage
+        return unless have_storage_section?
+        storage_class = Fluentd::Setting.const_get("storage_#{storage_type}".classify)
+        storage_class.new(storage["0"].except("type"))
+      end
+
       def create_parser
         return unless have_parse_section?
         parser_class = Fluentd::Setting.const_get("parser_#{parse_type}".classify)

app/models/fluentd/setting/storage_local.rb

@@ -0,0 +1,22 @@
+class Fluentd
+  module Setting
+    class StorageLocal
+      include Fluentd::Setting::Plugin
+
+      register_plugin("storage", "local")
+
+      def self.initial_params
+        {}
+      end
+
+      def common_options
+        [
+          :path,
+          :mode,
+          :dir_mode,
+          :pretty_print
+        ]
+      end
+    end
+  end
+end

app/views/shared/settings/_form.html.haml

@@ -8,6 +8,9 @@
   - if @setting.have_buffer_section?
     = render "shared/settings/buffer_form", form: form, buffer: @buffer
 
+  - if @setting.have_storage_section?
+    = render "shared/settings/storage_form", form: form, storage: @storage
+
   - if @setting.have_parse_section?
     = render "shared/settings/parser_form", form: form, parser: @parser
 

app/views/shared/settings/_storage_form.html.haml

@@ -0,0 +1,7 @@
+#storage-section.form-group.card.bg-light.mb-3
+  .card-body
+    = form.label(:storage_type, "Storage")
+    = form.select(:storage_type, Fluent::Plugin::STORAGE_REGISTRY.map.keys, {}, { class: "storage form-control" })
+    = form.fields("storage[0]", model: storage, class: ".form-group", builder: FluentdFormBuilder) do |storage_form|
+      - storage_form.object.common_options.each do |key|
+        = storage_form.field(key)