1 files changed, 56 insertions, 0 deletions
diff --git a/lib/gitlab/metrics/dashboard/validator/client.rb b/lib/gitlab/metrics/dashboard/validator/client.rb
new file mode 100644
index 00000000000..c63415abcfc
--- /dev/null
+++ b/lib/gitlab/metrics/dashboard/validator/client.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Metrics
+    module Dashboard
+      module Validator
+        class Client
+          # @param content [Hash] Representing a raw, unprocessed
+          # dashboard object
+          # @param schema_path [String] Representing path to dashboard schema file
+          # @param dashboard_path[String] Representing path to dashboard content file
+          # @param project [Project] Project to validate dashboard against
+          def initialize(content, schema_path, dashboard_path: nil, project: nil)
+            @content = content
+            @schema_path = schema_path
+            @dashboard_path = dashboard_path
+            @project = project
+          end
+
+          def execute
+            errors = validate_against_schema
+            errors += post_schema_validator.validate
+
+            errors.compact
+          end
+
+          private
+
+          attr_reader :content, :schema_path, :project, :dashboard_path
+
+          def custom_formats
+            @custom_formats ||= CustomFormats.new
+          end
+
+          def post_schema_validator
+            PostSchemaValidator.new(
+              project:        project,
+              metric_ids:     custom_formats.metric_ids_cache,
+              dashboard_path: dashboard_path
+            )
+          end
+
+          def schemer
+            @schemer ||= ::JSONSchemer.schema(Pathname.new(schema_path), formats: custom_formats.format_handlers)
+          end
+
+          def validate_against_schema
+            schemer.validate(content).map do |error|
+              Errors::SchemaValidationError.new(error)
+            end
+          end
+        end
+      end
+    end
+  end
+end