WIP

service/lib/agama/storage/config_conversions/from_json.rb

@@ -22,6 +22,7 @@
 require "agama/config"
 require "agama/storage/config_builder"
 require "agama/storage/config_conversions/from_json_conversions/config"
+require "agama/storage/config_json_solver"
 
 module Agama
   module Storage
@@ -41,6 +42,14 @@ def initialize(config_json, product_config: nil)
         # @return [Storage::Config]
         def convert
           # TODO: Raise error if config_json does not match the JSON schema.
+          #   Implementation idea: ConfigJSONChecker class which reports issues if:
+          #   * The JSON does not match the schema.
+          #   * The JSON contains both "default" and "mandatory" for partitions or logical volumes.
+          #   * The JSON contains "default" or "mandatory" more than once.
+          ConfigJSONSolver
+            .new(product_config)
+            .solve(config_json)
+
           FromJSONConversions::Config
             .new(config_json, config_builder: config_builder)
             .convert

service/lib/agama/storage/config_json_solver.rb

@@ -0,0 +1,100 @@
+# 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.
+
+module Agama
+  module Storage
+    # Class for solving a storage config.
+    #
+    # It assigns proper devices and size values according to the product and the system.
+    class ConfigJSONSolver
+      # @param devicegraph [Y2Storage::Devicegraph]
+      # @param product_config [Agama::Config]
+      def initialize(product_config)
+        @product_config = product_config
+      end
+
+      # Solves all the search and size configs within a given config.
+      #
+      # @note The config object is modified.
+      #
+      # @param config [Config]
+      def solve(config_json)
+        @config_json = config_json
+
+        solve_partitions
+        solve_logical_volumes
+      end
+
+    private
+
+      # @return [Hash]
+      attr_reader :config_json
+
+      # @return [Agama::Config]
+      attr_reader :product_config
+
+      def solve_partitions
+        configs_with_partitions_keyword.each { |c| solve_partitions_keyword(c) }
+      end
+
+      def solve_logical_volumes
+        configs_with_logical_volumes_keyword.each { |c| solve_logical_volumes_keyword(c) }
+      end
+
+      def configs_with_partitions_keyword
+        configs = drive_configs
+      end
+
+      def explicit_paths
+        configs_with_filesystem
+          .select { |c| c.is_a?(Hash) }
+          .map { |c| c.dig(:filesystem, :path) }
+          .compact
+      end
+
+      def configs_with_filesystem
+        drive_configs + partition_configs + logical_volume_configs
+      end
+
+      def drive_configs
+        config_json[:drives] || []
+      end
+
+      def partition_configs
+        drive_configs = config_json[:drives]
+        return [] unless drive_configs
+
+        drive_configs
+          .flat_map { |c| c[:partitions] }
+          .compact
+      end
+
+      def logical_volume_configs
+        volume_group_configs = config_json[:volumeGroups]
+        return [] unless volume_group_configs
+
+        volume_group_configs
+          .flat_map { |c| c[:logicalVolumes] }
+          .compact
+      end
+    end
+  end
+end