config: introduce new config format and parser

For supporting multiple deployments in one cnf and
improving overall config usability and structure - new
config format has to be introduced.
This change does not replace the old config format.

Refs: cnti-testcatalog#2121
Signed-off-by: Konstantin Yarovoy <[email protected]>

embedded_files/cnf-testsuite-v2-example.yml

@@ -0,0 +1,20 @@
+---
+config_version: "v2"
+common_parameters: 
+  container_names:
+    - name: coredns
+      rolling_update_test_tag: "1.8.0"
+      rolling_downgrade_test_tag: 1.6.7
+      rolling_version_change_test_tag: 1.8.0
+      rollback_from_tag: 1.8.0
+
+deployments:
+  helm_charts:
+    - name: coredns
+      helm_repo_name: stable
+      helm_repo_url: https://cncf.gitlab.io/stable
+      helm_chart_name: coredns
+  helm_directories:
+    - name: envoy
+      helm_directory: ../example-cnfs/envoy/envoy/
+

src/tasks/utils/cnf_installation/config.cr

@@ -0,0 +1,141 @@
+require "yaml"
+
+module CNFInstall
+  module Config
+    @[YAML::Serializable::Options(emit_nulls: true)]
+
+    class ConfigBase
+      include YAML::Serializable
+    end
+
+    class Config < ConfigBase
+      @config_version : String
+      @common_parameters : CommonParameters | Nil
+      @dynamic_parameters : DynamicParameters | Nil
+      @deployments : DeploymentsConfig
+      getter config_version, common_parameters, dynamic_parameters, deployments
+    end
+
+    class CommonParameters < ConfigBase
+      @service_name : String | Nil
+      @rolling_update_tag : String | Nil
+      @container_names : Array(Hash(String, String)) | Nil
+      @white_list_container_names : Array(String) | Nil
+      @docker_insecure_registries : Array(String) | Nil
+      @image_registry_fqdns : Hash(String, String) | Nil
+      @five_g_parameters : FiveGParameters | Nil
+      getter service_name, rolling_update_tag, container_names, white_list_container_names
+      getter docker_insecure_registries, image_registry_fqdns, five_g_parameters
+    end
+
+    class DynamicParameters < ConfigBase
+      @source_cnf_file : String | Nil
+      @source_cnf_dir : String | Nil
+      @yml_file_path : String | Nil
+      property source_cnf_file, source_cnf_dir, yml_file_path
+    end
+
+    class DeploymentsConfig < ConfigBase
+      @helm_charts : Array(HelmChartConfig) | Nil
+      @helm_directories : Array(HelmDirectoryConfig) | Nil
+      @manifests : Array(ManifestDirectoryConfig) | Nil
+      getter helm_charts, helm_directories, manifests
+
+      def after_initialize
+        unless @helm_charts || @helm_directories || @manifests
+          raise YAML::Error.new("At least one deployment should be configured")
+        end
+
+        deployment_names = Set(String).new
+        {@helm_charts, @helm_directories, @manifests}.each do |deployment_array|
+          if deployment_array
+            deployment_array.each do |deployment|
+              if deployment_names.includes?(deployment.name)
+                raise YAML::Error.new("Deployment names should be unique: \"#{deployment.name}\"")
+              else
+                deployment_names.add(deployment.name)
+              end
+            end
+          end
+        end
+      end
+    end
+
+    class DeploymentConfig < ConfigBase
+      @name : String
+      getter name
+    end
+
+    class HelmChartConfig < DeploymentConfig
+      @helm_repo_name : String
+      @helm_repo_url : String
+      @helm_chart_name : String
+      @helm_values : String | Nil
+      @namespace : String | Nil
+      getter helm_repo_name, helm_repo_url, helm_chart_name, helm_values, namespace
+    end
+
+    class HelmDirectoryConfig < DeploymentConfig
+      @helm_directory : String
+      @helm_chart_path : String | Nil
+      @helm_values : String | Nil
+      @namespace : String | Nil
+      getter helm_directory, helm_chart_path, helm_values, namespace
+
+      def after_initialize
+        unless @helm_chart_path
+          @helm_chart_path = "#{helm_directory}Chart.yaml"
+        end
+      end
+    end
+
+    class ManifestDirectoryConfig < DeploymentConfig
+      @manifest_directory : String
+      getter manifest_directory
+    end
+
+    class FiveGParameters < ConfigBase
+      @amf_label : String | Nil
+      @smf_label : String | Nil
+      @upf_label : String | Nil
+      @ric_label : String | Nil
+      @amf_service_name : String | Nil
+      @mmc : String | Nil
+      @mnc : String | Nil
+      @sst : String | Nil
+      @sd : String | Nil
+      @tac : String | Nil
+      @protectionScheme : String | Nil
+      @publicKey : String | Nil
+      @publicKeyId : String | Nil
+      @routingIndicator : String | Nil
+      @enabled : String | Nil
+      @count : String | Nil
+      @initialMSISDN : String | Nil
+      @key : String | Nil
+      @op : String | Nil
+      @opType : String | Nil
+      @type : String | Nil
+      @apn : String | Nil
+      @emergency : String | Nil
+
+    end
+
+    class InvalidDeploymentConfigError < YAML::Error
+      def initialize(deployment_type, mandatory_parameters)
+        super("#{deployment_type} deployment config should contain all mandatory parameters: #{mandatory_parameters}")
+      end
+    end
+
+    def self.parse_cnf_config(path_to_config)
+      yaml_content = File.read(path_to_config)
+      begin
+        config = Config.from_yaml(yaml_content)
+      rescue exception
+        stdout_failure exception.message
+        exit 1
+      end
+      puts config.inspect
+    end
+  end
+end