1 files changed, 55 insertions, 0 deletions
diff --git a/lib/gitlab/ci/config/node/validation_helpers.rb b/lib/gitlab/ci/config/node/validation_helpers.rb
new file mode 100644
index 00000000000..72f648975dc
--- /dev/null
+++ b/lib/gitlab/ci/config/node/validation_helpers.rb
@@ -0,0 +1,55 @@
+module Gitlab
+  module Ci
+    class Config
+      module Node
+        module ValidationHelpers
+          private
+
+          def validate_duration(value)
+            value.is_a?(String) && ChronicDuration.parse(value)
+          rescue ChronicDuration::DurationParseError
+            false
+          end
+
+          def validate_array_of_strings(values)
+            values.is_a?(Array) && values.all? { |value| validate_string(value) }
+          end
+
+          def validate_array_of_strings_or_regexps(values)
+            values.is_a?(Array) && values.all? { |value| validate_string_or_regexp(value) }
+          end
+
+          def validate_variables(variables)
+            variables.is_a?(Hash) &&
+              variables.all? { |key, value| validate_string(key) && validate_string(value) }
+          end
+
+          def validate_string(value)
+            value.is_a?(String) || value.is_a?(Symbol)
+          end
+
+          def validate_string_or_regexp(value)
+            return true if value.is_a?(Symbol)
+            return false unless value.is_a?(String)
+
+            if value.first == '/' && value.last == '/'
+              Regexp.new(value[1...-1])
+            else
+              true
+            end
+          rescue RegexpError
+            false
+          end
+
+          def validate_environment(value)
+            value.is_a?(String) && value =~ Gitlab::Regex.environment_name_regex
+          end
+
+          def validate_boolean(value)
+            value.in?([true, false])
+          end
+        end
+      end
+    end
+  end
+end