GlueDataBrew / Client / describe_ruleset

describe_ruleset

GlueDataBrew.Client.describe_ruleset(**kwargs)

Retrieves detailed information about the ruleset.

See also: AWS API Documentation

Request Syntax

response = client.describe_ruleset(
    Name='string'
)

Parameters:

Name (string) –

[REQUIRED]

The name of the ruleset to be described.

Return type:

dict

Returns:

Response Syntax

{
    'Name': 'string',
    'Description': 'string',
    'TargetArn': 'string',
    'Rules': [
        {
            'Name': 'string',
            'Disabled': True|False,
            'CheckExpression': 'string',
            'SubstitutionMap': {
                'string': 'string'
            },
            'Threshold': {
                'Value': 123.0,
                'Type': 'GREATER_THAN_OR_EQUAL'|'LESS_THAN_OR_EQUAL'|'GREATER_THAN'|'LESS_THAN',
                'Unit': 'COUNT'|'PERCENTAGE'
            },
            'ColumnSelectors': [
                {
                    'Regex': 'string',
                    'Name': 'string'
                },
            ]
        },
    ],
    'CreateDate': datetime(2015, 1, 1),
    'CreatedBy': 'string',
    'LastModifiedBy': 'string',
    'LastModifiedDate': datetime(2015, 1, 1),
    'ResourceArn': 'string',
    'Tags': {
        'string': 'string'
    }
}

Response Structure

• (dict) –

  • Name (string) –

    The name of the ruleset.

  • Description (string) –

    The description of the ruleset.

  • TargetArn (string) –

    The Amazon Resource Name (ARN) of a resource (dataset) that the ruleset is associated with.

  • Rules (list) –

    A list of rules that are defined with the ruleset. A rule includes one or more checks to be validated on a DataBrew dataset.

    • (dict) –

      Represents a single data quality requirement that should be validated in the scope of this dataset.

      • Name (string) –

        The name of the rule.

      • Disabled (boolean) –

        A value that specifies whether the rule is disabled. Once a rule is disabled, a profile job will not validate it during a job run. Default value is false.

      • CheckExpression (string) –

        The expression which includes column references, condition names followed by variable references, possibly grouped and combined with other conditions. For example, (:col1 starts_with :prefix1 or :col1 starts_with :prefix2) and (:col1 ends_with :suffix1 or :col1 ends_with :suffix2). Column and value references are substitution variables that should start with the ‘:’ symbol. Depending on the context, substitution variables’ values can be either an actual value or a column name. These values are defined in the SubstitutionMap. If a CheckExpression starts with a column reference, then ColumnSelectors in the rule should be null. If ColumnSelectors has been defined, then there should be no column reference in the left side of a condition, for example, is_between :val1 and :val2.

        For more information, see Available checks

      • SubstitutionMap (dict) –

        The map of substitution variable names to their values used in a check expression. Variable names should start with a ‘:’ (colon). Variable values can either be actual values or column names. To differentiate between the two, column names should be enclosed in backticks, for example, ":col1": "`Column A`".

        • (string) –

          • (string) –

      • Threshold (dict) –

        The threshold used with a non-aggregate check expression. Non-aggregate check expressions will be applied to each row in a specific column, and the threshold will be used to determine whether the validation succeeds.

        • Value (float) –

          The value of a threshold.

        • Type (string) –

          The type of a threshold. Used for comparison of an actual count of rows that satisfy the rule to the threshold value.

        • Unit (string) –

          Unit of threshold value. Can be either a COUNT or PERCENTAGE of the full sample size used for validation.

      • ColumnSelectors (list) –

        List of column selectors. Selectors can be used to select columns using a name or regular expression from the dataset. Rule will be applied to selected columns.

        • (dict) –

          Selector of a column from a dataset for profile job configuration. One selector includes either a column name or a regular expression.

          • Regex (string) –

            A regular expression for selecting a column from a dataset.

          • Name (string) –

            The name of a column from a dataset.

  • CreateDate (datetime) –

    The date and time that the ruleset was created.

  • CreatedBy (string) –

    The Amazon Resource Name (ARN) of the user who created the ruleset.

  • LastModifiedBy (string) –

    The Amazon Resource Name (ARN) of the user who last modified the ruleset.

  • LastModifiedDate (datetime) –

    The modification date and time of the ruleset.

  • ResourceArn (string) –

    The Amazon Resource Name (ARN) for the ruleset.

  • Tags (dict) –

    Metadata tags that have been applied to the ruleset.

    • (string) –

      • (string) –

Exceptions

• GlueDataBrew.Client.exceptions.ResourceNotFoundException

• GlueDataBrew.Client.exceptions.ValidationException