WIP: Use AgamaProposal for the initial storage proposal

service/lib/agama/storage/config_reader.rb

@@ -0,0 +1,112 @@
+# frozen_string_literal: true
+
+# Copyright (c) [2024] SUSE LLC
+#
+# All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of version 2 of the GNU General Public License as published
+# by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, contact SUSE LLC.
+#
+# To contact SUSE LLC about this file by physical or electronic mail, you may
+# find current contact information at www.suse.com.
+
+require "agama/storage/config_conversions"
+
+module Agama
+  module Storage
+    # Reader for the initial storage config
+    class ConfigReader
+      # @param agama_config [Agama::Config]
+      def initialize(agama_config)
+        @agama_config = agama_config
+      end
+
+      # Generates a storage config from the Agama control file.
+      #
+      # @return [Storage::Config]
+      def read
+        ConfigConversions::FromJSON.new(json, default_paths: default_paths).convert
+      end
+
+    private
+
+      # @return [Agama::Config]
+      attr_reader :agama_config
+
+      def default_paths
+        @default_paths ||= agama_config.default_paths
+      end
+
+      def space_policy
+        @space_policy ||= agama_config.data.dig("storage", "space_policy")
+      end
+
+      def lvm?
+        return @lvm unless @lvm.nil?
+
+        @lvm = !!agama_config.data.dig("storage", "lvm")
+      end
+
+      def json
+        lvm? ? json_for_lvm : json_for_disk
+      end
+
+      def json_for_disk
+        {
+          drives: [
+            { partitions: [partition_for_existing, volumes_generator].compact }
+          ]
+        }
+      end
+
+      def json_for_lvm
+        {
+          drives: [
+            {
+              alias:      "target",
+              partitions: [partition_for_existing].compact
+            }
+          ],
+          volume_groups: [
+            {
+              name:            "system",
+              physicalVolumes: [pvs_generator],
+              logicalVolumes:  [volumes_generator]
+            }
+          ]
+        }
+      end
+
+      def volumes_generator
+        { generate: "default" }
+      end
+
+      def pvs_generator
+        { generate: ["target"] }
+      end
+
+      def partition_for_existing
+        return unless ["delete", "resize"].include?(space_policy)
+
+        partition = { search: "*" }
+
+        if space_policy == "delete"
+          partition[:delete] = true
+        else
+          partition[:size] = { min: 0, max: "current" }
+        end
+
+        partition
+      end
+    end
+  end
+end

service/lib/agama/storage/manager.rb

@@ -29,7 +29,7 @@
 require "agama/storage/callbacks"
 require "agama/storage/iscsi/manager"
 require "agama/storage/finisher"
-require "agama/storage/proposal_settings_reader"
+require "agama/storage/config_reader"
 require "agama/issue"
 require "agama/with_locale"
 require "agama/with_issues"
@@ -216,8 +216,8 @@ def probe_devices
 
       # Calculates the proposal using the settings from the config file.
       def calculate_proposal
-        settings = ProposalSettingsReader.new(config).read
-        proposal.calculate_guided(settings)
+        settings = ConfigReader.new(config).read
+        proposal.calculate_agama(settings)
       end
 
       # Adds the required packages to the list of resolvables to install