def METHOD_NAME(alert_processing_rule_name: Optional[str] = None,
                                      resource_group_name: Optional[str] = None,
                                      opts: Optional[pulumi.InvokeOptions] = None) -> AwaitableGetAlertProcessingRuleByNameResult:
    """
    Get an alert processing rule by name.
    :param str alert_processing_rule_name: The name of the alert processing rule that needs to be fetched.
    :param str resource_group_name: Resource group name where the resource is created.
    """
    __args__ = dict()
    __args__['alertProcessingRuleName'] = alert_processing_rule_name
    __args__['resourceGroupName'] = resource_group_name
    opts = pulumi.InvokeOptions.merge(_utilities.get_invoke_opts_defaults(), opts)
    __ret__ = pulumi.runtime.invoke('azure-native:alertsmanagement/v20230501preview:getAlertProcessingRuleByName', __args__, opts=opts, typ=GetAlertProcessingRuleByNameResult).value
    return AwaitableGetAlertProcessingRuleByNameResult(
        id=pulumi.get(__ret__, 'id'),
        location=pulumi.get(__ret__, 'location'),
        name=pulumi.get(__ret__, 'name'),
        properties=pulumi.get(__ret__, 'properties'),
        system_data=pulumi.get(__ret__, 'system_data'),
        tags=pulumi.get(__ret__, 'tags'),
        type=pulumi.get(__ret__, 'type'))