Validate remodeler file using json schema

hed/tools/remodeling/cli/run_remodel.py

@@ -6,6 +6,7 @@
 from hed.errors.exceptions import HedFileError
 from hed.tools.util.io_util import get_file_list, get_task_from_file, get_task_dict
 from hed.tools.bids.bids_dataset import BidsDataset
+from hed.tools.remodeling.validator import RemodelerValidator
 from hed.tools.remodeling.dispatcher import Dispatcher
 from hed.tools.remodeling.backup_manager import BackupManager
 
@@ -109,10 +110,11 @@ def parse_arguments(arg_list=None):
         print(f"Data directory: {args.data_dir}\nModel path: {args.model_path}")
     with open(args.model_path, 'r') as fp:
         operations = json.load(fp)
-    parsed_operations, errors = Dispatcher.parse_operations(operations)
+    validator = RemodelerValidator()
+    errors = validator.validate(operations)
     if errors:
         raise ValueError("UnableToFullyParseOperations",
-                         f"Fatal operation error, cannot continue:\n{Dispatcher.errors_to_str(errors)}")
+                         f"Fatal operation error, cannot continue:\n{errors}")
     return args, operations
 
 

hed/tools/remodeling/dispatcher.py

@@ -22,7 +22,7 @@ def __init__(self, operation_list, data_root=None,
         """ Constructor for the dispatcher.
 
         Parameters:
-            operation_list (list): List of unparsed operations.
+            operation_list (list): List of valid unparsed operations.
             data_root (str or None):  Root directory for the dataset. If none, then backups are not made.
             hed_versions (str, list, HedSchema, or HedSchemaGroup): The HED schema.
 
@@ -42,11 +42,7 @@ def __init__(self, operation_list, data_root=None,
                 raise HedFileError("BackupDoesNotExist",
                                    f"Remodeler cannot be run with a dataset without first creating the "
                                    f"{self.backup_name} backup for {self.data_root}", "")
-        op_list, errors = self.parse_operations(operation_list)
-        if errors:
-            these_errors = self.errors_to_str(errors, 'Dispatcher failed due to invalid operations')
-            raise ValueError("InvalidOperationList", f"{these_errors}")
-        self.parsed_ops = op_list
+        self.parsed_ops = self.parse_operations(operation_list)
         self.hed_schema = self.get_schema(hed_versions)
         self.summary_dicts = {}
 
@@ -183,31 +179,11 @@ def save_summaries(self, save_formats=['.json', '.txt'], individual_summaries="s
 
     @staticmethod
     def parse_operations(operation_list):
-        errors = []
         operations = []
         for index, item in enumerate(operation_list):
-            try:
-                if not isinstance(item, dict):
-                    raise TypeError("InvalidOperationFormat",
-                                    f"Each operations must be a dictionary but operation {str(item)} is {type(item)}")
-                if "operation" not in item:
-                    raise KeyError("MissingOperation",
-                                   f"operation {str(item)} does not have a operation key")
-                if "parameters" not in item:
-                    raise KeyError("MissingParameters",
-                                   f"Operation {str(item)} does not have a parameters key")
-                if item["operation"] not in valid_operations:
-                    raise KeyError("OperationNotListedAsValid",
-                                   f"Operation {item['operation']} must be added to operations_list "
-                                   f"before it can be executed.")
-                new_operation = valid_operations[item["operation"]](item["parameters"])
-                operations.append(new_operation)
-            except Exception as ex:
-                errors.append({"index": index, "item": f"{item}", "error_type": type(ex),
-                               "error_code": ex.args[0], "error_msg": ex.args[1]})
-        if errors:
-            return [], errors
-        return operations, []
+            new_operation = valid_operations[item["operation"]](item["parameters"])
+            operations.append(new_operation)
+        return operations
 
     @staticmethod
     def prep_data(df):

hed/tools/remodeling/operations/base_op.py

@@ -1,71 +1,29 @@
 """ Base class for remodeling operations. """
 
+from abc import ABC, abstractmethod
 
-class BaseOp:
-    """ Base class for operations. All remodeling operations should extend this class.
-
-    The base class holds the parameters and does basic parameter checking against the operation's specification.
-
-    """
-
-    def __init__(self, op_spec, parameters):
-        """ Base class constructor for operations.
+class BaseOp(ABC):
+    """ Base class for operations. All remodeling operations should extend this class."""
 
+    def __init__(self, parameters):
+        """ Constructor for the BaseOp class. Should be extended by operations.
+
         Parameters:
-            op_spec (dict): Specification for required and optional parameters.
-            parameters (dict):  Actual values of the parameters for the operation.
-
-        :raises KeyError:
-            - If a required parameter is missing.
-            - If an unexpected parameter is provided.
-
-        :raises TypeError:
-            - If a parameter has the wrong type.
-
-        :raises ValueError:
-            - If the specification is missing a valid operation.
-
+            parameters (dict): A dictionary specifying the appropriate parameters for the operation.
         """
-        self.operation = op_spec.get("operation", "")
-        if not self.operation:
-            raise ValueError("OpMustHaveOperation", "Op must have operation is empty")
-        self.required_params = op_spec.get("required_parameters", {})
-        self.optional_params = op_spec.get("optional_parameters", {})
-        self.check_parameters(parameters)
-
-    def check_parameters(self, parameters):
-        """ Verify that the parameters meet the operation specification.
-
-        Parameters:
-            parameters (dict): Dictionary of parameters for this operation.
+        self.parameters = parameters
 
-        :raises KeyError:
-            - If a required parameter is missing.
-            - If an unexpected parameter is provided.
+    @property
+    @abstractmethod
+    def NAME(self):
+        pass
 
-        :raises TypeError:
-            - If a parameter has the wrong type.
-
-        """
-
-        required = set(self.required_params.keys())
-        required_missing = required.difference(set(parameters.keys()))
-        if required_missing:
-            raise KeyError("MissingRequiredParameters",
-                           f"{self.operation} requires parameters {list(required_missing)}")
-        for param_name, param_value in parameters.items():
-            if param_name in self.required_params:
-                param_type = self.required_params[param_name]
-            elif param_name in self.optional_params:
-                param_type = self.optional_params[param_name]
-            else:
-                raise KeyError("BadParameter",
-                               f"{param_name} not a required or optional parameter for {self.operation}")
-            if isinstance(param_type, list):
-                self._check_list_type(param_value, param_type)
-            elif not isinstance(param_value, param_type):
-                raise TypeError("BadType", f"{param_value} has type {type(param_value)} not {param_type}")
+    @property
+    @abstractmethod
+    def PARAMS(self):
+        pass
 
+    @abstractmethod
     def do_op(self, dispatcher, df, name, sidecar=None):
         """ Base class method to be overridden by each operation.
 
@@ -78,21 +36,13 @@ def do_op(self, dispatcher, df, name, sidecar=None):
         """
 
         return df.copy()
-
+    
     @staticmethod
-    def _check_list_type(param_value, param_type):
-        """ Check a parameter value against its specified type.
-
-        Parameters:
-            param_value (any):   The value to be checked.
-            param_type (any):    Class to check the param_value against.
-
-        :raises TypeError:
-            - If param_value is not an instance of param_type.
-
-        """
-
-        for this_type in param_type:
-            if isinstance(param_value, this_type):
-                return
-        raise TypeError("BadType", f"{param_value} has type {type(param_value)} which is not in {str(param_type)}")
+    @abstractmethod
+    def validate_input_data(parameters):
+        '''Validates whether operation parameter input data meets specific criteria beyond what can be captured in json schema. 
+           For example, whether two input arrays are the same length. Minimum implementation should return an empty list
+           to indicate no errors were found. If additional validation is necessary, method should perform the validation and 
+           return a list with user friendly error strings. 
+        '''
+        return []

hed/tools/remodeling/operations/convert_columns_op.py

@@ -1,27 +1,53 @@
 """ Convert the type of the specified columns of a tabular file. """
+#TODO finish implementation
 
 from hed.tools.remodeling.operations.base_op import BaseOp
 
 
 class ConvertColumnsOp(BaseOp):
-    """ Convert.
+    """ Convert data type in column
 
     Required remodeling parameters:   
         - **column_names** (*list*):   The list of columns to convert.   
-        - **convert_to_** (*str*):  Name of type to convert to. (One of 'str', 'int', 'float', 'fixed'.)   
+        - **convert_to** (*str*):  Name of type to convert to. (One of 'str', 'int', 'float', 'fixed'.)   
+
+    Optional remodeling parameters:
         - **decimal_places** (*int*):   Number decimal places to keep (for fixed only).   
-
-
+
     """
-
+    NAME = "convert_columns"
+
     PARAMS = {
-        "operation": "convert_columns",
-        "required_parameters": {
-            "column_names": list,
-            "convert_to": str
+        "type": "object",
+        "properties": {
+            "column_names": {
+                "type": "array",
+                "items": {
+                    "type": "string"
+                },
+                "minItems": 1,
+                "uniqueItems": True
+            },
+            "convert_to": {
+                "type": "string",
+                "enum": ['str', 'int', 'float', 'fixed'],
+            },
+            "decimal_places": {
+                "type": "integer"
+            }
+        },
+        "required": [
+            "column_names",
+            "convert_to"
+        ],
+        "additionalProperties": False,
+        "if": {
+            "properties": {
+                "convert_to": {"const": "fixed"}
+            }
         },
-        "optional_parameters": {
-            "decimal_places": int
+        "then": {
+            "required": ["decimal_places"]
         }
     }
 
@@ -31,25 +57,11 @@ def __init__(self, parameters):
         Parameters:
             parameters (dict): Parameter values for required and optional parameters.
 
-        :raises KeyError:
-            - If a required parameter is missing.
-            - If an unexpected parameter is provided.
-
-        :raises TypeError:
-            - If a parameter has the wrong type.
-
-        :raises ValueError:
-            - If convert_to is not one of the allowed values.
-
         """
-        super().__init__(self.PARAMS, parameters)
+        super().__init__(parameters)
         self.column_names = parameters['column_names']
         self.convert_to = parameters['convert_to']
         self.decimal_places = parameters.get('decimal_places', None)
-        self.allowed_types = ['str', 'int', 'float', 'fixed']
-        if self.convert_to not in self.allowed_types:
-            raise ValueError("CannotConvertToSpecifiedType",
-                             f"The convert_to value {self.convert_to} must be one of {str(self.allowed_types)}")
 
     def do_op(self, dispatcher, df, name, sidecar=None):
         """ Convert the specified column to a specified type.
@@ -67,3 +79,7 @@ def do_op(self, dispatcher, df, name, sidecar=None):
 
         df_new = df.copy()
         return df_new
+
+    @staticmethod
+    def validate_input_data(operations):
+        return []