Pipeline

class BaseDVEPipeline:
    """
    Base class for running a DVE Pipeline either by a given step or a full e2e process.
    """

    def __init__(
        self,
        processed_files_path: URI,
        audit_tables: BaseAuditingManager,
        data_contract: BaseDataContract,
        step_implementations: Optional[BaseStepImplementations[EntityType]],
        rules_path: Optional[URI],
        submitted_files_path: Optional[URI],
        reference_data_loader: Optional[type[BaseRefDataLoader]] = None,
        job_run_id: Optional[int] = None,
        logger: Optional[logging.Logger] = None,
    ):
        self._submitted_files_path = submitted_files_path
        self._processed_files_path = processed_files_path
        self._rules_path = rules_path
        self._reference_data_loader = reference_data_loader
        self._job_run_id = job_run_id
        self._audit_tables = audit_tables
        self._data_contract = data_contract
        self._step_implementations = step_implementations
        self._logger = logger or get_logger(__name__)
        self._summary_lock = Lock()
        self._rec_tracking_lock = Lock()
        self._aggregates_lock = Lock()

        if self._data_contract:
            self._data_contract.logger = self._logger
        if self._step_implementations:
            self._step_implementations.logger = self._logger

    @property
    def job_run_id(self) -> Optional[int]:
        """Unique Identifier for the job/process that is running this Pipeline."""
        return self._job_run_id

    @property
    def processed_files_path(self) -> URI:
        """URI Location for where the files are being processed."""
        return self._processed_files_path

    @property
    def rules_path(self) -> Optional[URI]:
        """URI Location for rules of the dataset (i.e. the dischema.json)."""
        return self._rules_path

    @property
    def data_contract(self) -> BaseDataContract:
        """Data contract object to load and apply the rules to a given dataset."""
        return self._data_contract

    @property
    def step_implementations(self) -> Optional[BaseStepImplementations[EntityType]]:
        """The step implementations to apply the business rules to a given dataset"""
        return self._step_implementations

    @staticmethod
    def get_entity_count(entity: EntityType) -> int:
        """Get a row count of an entity stored as parquet"""
        raise NotImplementedError()

    def get_submission_status(
        self, step_name: DVEStageName, submission_id: str
    ) -> SubmissionStatus:
        """Determine submission status of a submission if not explicitly given"""
        if not (submission_status := self._audit_tables.get_submission_status(submission_id)):
            self._logger.warning(
                f"Unable to determine status of submission_id: {submission_id}"
                + f" in service {step_name} - assuming no issues."
            )
            return SubmissionStatus()
        return submission_status

    @validate_arguments
    def _move_submission_to_working_location(
        self,
        submission_id: str,
        submitted_file_uri: URI,
        submission_info_uri: URI,
    ) -> tuple[URI, URI]:
        if not self.processed_files_path:
            raise AttributeError("Path for processed files not supplied.")

        paths: list[URI] = []
        for path in (submitted_file_uri, submission_info_uri):
            source = fh.resolve_location(path)
            dest = fh.joinuri(self.processed_files_path, submission_id, fh.get_file_name(path))
            fh.move_resource(source, dest)
            paths.append(dest)

        return tuple(paths)  # type: ignore

    def _get_submission_files_for_run(self) -> Generator[tuple[FileURI, InfoURI], None, None]:
        """Yields submission files from the submitted_files path"""
        # TODO - I think the metadata generation needs to be redesigned or at least generated
        # TODO - if we continue with this approach. This comments is based on the fact that
        # TODO - we still rely on a metadata.json atm.
        if not self._submitted_files_path:
            raise AttributeError("Path for submitted files not supplied.")

        files = defaultdict(list)

        for _file, _ in fh.iter_prefix(self._submitted_files_path):
            stem = fh.get_file_stem(_file)
            stem = re.sub(".metadata$", "", stem)
            files[stem].append(_file)

        for res in files.values():
            if len(res) < 2:
                # not a pair of meta and submission to process (yet!)
                continue
            if len(res) > 2:
                # somehow got multiple files attached to same meta (csv and xml sub together)
                for fle in res:
                    deadletter_file(fle)
                continue

            if "metadata" in res[0]:
                metadata_uri = res[0]
                sub_uri = res[1]
            else:
                metadata_uri = res[1]
                sub_uri = res[0]

            yield sub_uri, metadata_uri

    def write_file_to_parquet(
        self,
        submission_file_uri: URI,
        submission_info: SubmissionInfo,
        output: URI,
        entity_type: Optional[EntityType] = None,
    ):
        """Takes a submission file and a valid submission_info and converts the file to parquet"""

        if not self.rules_path:
            raise AttributeError("rules path not provided")

        ext = submission_info.file_extension
        models, _config, dataset = load_config(submission_info.dataset_id, self.rules_path)
        out = fh.joinuri(output, submission_info.submission_id, "transform/")
        fh.create_directory(out)  # simply for local file systems
        errors = []

        for model_name, model in models.items():
            self._logger.info(f"Transforming {model_name} to stringified parquet")
            reader: BaseFileReader = load_reader(dataset, model_name, ext)
            try:
                if not entity_type:
                    reader.write_parquet(
                        reader.read_to_py_iterator(
                            submission_file_uri, model_name, stringify_model(model)  # type: ignore
                        ),
                        f"{out}{model_name}",
                    )
                else:
                    reader.write_parquet(
                        reader.read_to_entity_type(
                            entity_type,  # type: ignore
                            submission_file_uri,
                            model_name,
                            stringify_model(model),  # type: ignore
                        ),
                        f"{out}{model_name}",
                    )
            except MessageBearingError as exc:
                errors.extend(exc.messages)

        return list(dict.fromkeys(errors))  # remove any duplicate errors

    def audit_received_file(
        self, submission_id: str, submission_file: FileURI, metadata_file: InfoURI
    ):
        """Sets a file as received the moves it to working location"""
        # move file
        _, meta_uri = self._move_submission_to_working_location(  # pylint: disable=W0632
            submission_id, submission_file, metadata_file
        )
        sub_info = SubmissionInfo.from_metadata_file(submission_id, meta_uri)

        return sub_info

    def audit_received_file_step(
        self, pool: ThreadPoolExecutor, submitted_files: Iterable[tuple[FileURI, InfoURI]]
    ) -> tuple[list[SubmissionInfo], list[SubmissionInfo]]:
        """Set files as being received and mark them for file transformation"""
        self._logger.info("Starting audit received file service")
        audit_received_futures: list[tuple[str, FileURI, Future]] = []
        for submission_file in submitted_files:
            data_uri, metadata_uri = submission_file
            submission_id = uuid4().hex
            future = pool.submit(self.audit_received_file, submission_id, data_uri, metadata_uri)
            audit_received_futures.append((submission_id, data_uri, future))

        success: list[SubmissionInfo] = []
        failed: list[SubmissionInfo] = []
        for submission_id, submission_file_uri, future in audit_received_futures:
            try:
                submission_info = future.result()
            except AssertionError as exc:
                self._logger.error(f"audit_received_file raised exception: {exc}")
                raise exc
            except PERMISSIBLE_EXCEPTIONS as exc:
                self._logger.warning(
                    f"audit_received_file raised exception: {exc}. Will be retried later."
                )
                continue
            except Exception as exc:  # pylint: disable=W0703
                self._logger.exception("audit_received_file raised exception:")
                dump_processing_errors(
                    fh.joinuri(self.processed_files_path, submission_id),
                    "audit_received",
                    [CriticalProcessingError.from_exception(exc)],
                )
                # sub_info should at least
                # be populated with file_name and file_extension
                failed.append(
                    SubmissionInfo(
                        submission_id=submission_id,
                        dataset_id=None,
                        file_name=fh.get_file_stem(submission_file_uri),
                        file_extension=fh.get_file_suffix(submission_file_uri),
                    )
                )
                continue
            if isinstance(submission_info, SubmissionInfo):
                success.append(submission_info)
            else:
                failed.append(submission_info)
        if len(success + failed) > 0:
            self._audit_tables.add_new_submissions(success + failed, job_run_id=self.job_run_id)
        if len(success) > 0:
            self._audit_tables.mark_transform(
                list(map(lambda x: x.submission_id, success)), job_run_id=self.job_run_id
            )
        if len(failed) > 0:
            self._audit_tables.mark_failed(
                list(map(lambda x: x.submission_id, failed)), job_run_id=self.job_run_id
            )

        return success, failed

    def file_transformation(
        self, submission_info: SubmissionInfo
    ) -> tuple[SubmissionInfo, SubmissionStatus]:
        """Transform a file from its original format into a 'stringified' parquet file"""
        if not self.processed_files_path:
            raise AttributeError("processed files path not provided")
        self._logger.info(f"Applying file transformation to {submission_info.submission_id}")
        errors: list[FeedbackMessage] = []
        submission_status: SubmissionStatus = SubmissionStatus()
        submission_file_uri: URI = fh.joinuri(
            self.processed_files_path,
            submission_info.submission_id,
            submission_info.file_name_with_ext,
        )
        try:
            errors.extend(
                self.write_file_to_parquet(
                    submission_file_uri, submission_info, self.processed_files_path
                )
            )

        except MessageBearingError as exc:
            self._logger.exception("Unexpected file transformation error:")
            errors.extend(exc.messages)

        if errors:
            dump_feedback_errors(
                fh.joinuri(self.processed_files_path, submission_info.submission_id),
                "file_transformation",
                errors,
            )
            submission_status.validation_failed = True
            return submission_info, submission_status
        return submission_info, submission_status

    def file_transformation_step(
        self, pool: Executor, submissions_to_process: list[SubmissionInfo]
    ) -> tuple[
        list[tuple[SubmissionInfo, SubmissionStatus]], list[tuple[SubmissionInfo, SubmissionStatus]]
    ]:
        """Step to transform files from their original format into parquet files"""
        self._logger.info("Starting file transformation service")
        file_transform_futures: list[tuple[SubmissionInfo, Future]] = []

        for submission_info in submissions_to_process:
            # add audit entry
            future = pool.submit(self.file_transformation, submission_info)
            file_transform_futures.append((submission_info, future))

        success: list[tuple[SubmissionInfo, SubmissionStatus]] = []
        failed: list[tuple[SubmissionInfo, SubmissionStatus]] = []
        failed_processing: list[tuple[SubmissionInfo, SubmissionStatus]] = []

        for sub_info, future in file_transform_futures:
            try:
                # sub_info passed here either return SubInfo or dict. If SubInfo, not actually
                # modified in anyway during this step.
                submission_info: SubmissionInfo  # type: ignore
                submission_status: SubmissionStatus
                submission_info, submission_status = future.result()
                if submission_status.validation_failed:
                    failed.append((submission_info, submission_status))
                else:
                    success.append((submission_info, submission_status))
            except AttributeError as exc:
                self._logger.error(f"File transformation raised exception: {exc}")
                raise exc
            except PERMISSIBLE_EXCEPTIONS as exc:
                self._logger.warning(
                    f"File transformation raised exception: {exc}. Will be retried later."
                )
                continue
            except Exception as exc:  # pylint: disable=W0703
                self._logger.exception("File transformation raised exception:")
                dump_processing_errors(
                    fh.joinuri(self.processed_files_path, sub_info.submission_id),
                    "file_transformation",
                    [CriticalProcessingError.from_exception(exc)],
                )
                submission_status = SubmissionStatus(processing_failed=True)
                failed_processing.append((sub_info, submission_status))
                continue

        if len(success) > 0:
            self._audit_tables.mark_data_contract(
                list(starmap(lambda x, _: x.submission_id, success)), job_run_id=self.job_run_id
            )

        if len(failed) > 0:
            self._audit_tables.mark_error_report(
                list(
                    starmap(
                        lambda x, _: (
                            x.submission_id,
                            "validation_failed",
                        ),
                        failed,
                    )
                ),
                job_run_id=self.job_run_id,
            )

        if len(failed_processing) > 0:
            self._audit_tables.mark_failed(
                [si.submission_id for si, _ in failed_processing], job_run_id=self.job_run_id
            )

        return success, failed

    def apply_data_contract(
        self, submission_info: SubmissionInfo, submission_status: Optional[SubmissionStatus] = None
    ) -> tuple[SubmissionInfo, SubmissionStatus]:
        """Method for applying the data contract given a submission_info"""
        self._logger.info(f"Applying data contract to {submission_info.submission_id}")
        if not submission_status:
            submission_status = self.get_submission_status(
                "data_contract", submission_info.submission_id
            )
        if not self.processed_files_path:
            raise AttributeError("processed files path not provided")

        if not self.rules_path:
            raise AttributeError("rules path not provided")

        working_dir = fh.joinuri(self.processed_files_path, submission_info.submission_id)

        read_from = fh.joinuri(working_dir, "transform/")
        write_to = fh.joinuri(working_dir, "data_contract/")

        fh.create_directory(write_to)  # simply for local file systems

        _, config, model_config = load_config(submission_info.dataset_id, self.rules_path)
        entities = {}
        entity_locations = {}

        for path, _ in fh.iter_prefix(read_from):
            entity_locations[fh.get_file_name(path)] = path
            entities[fh.get_file_name(path)] = self.data_contract.add_record_index(
                self.data_contract.read_parquet(path)
            )

        key_fields = {model: conf.reporting_fields for model, conf in model_config.items()}

        entities, feedback_errors_uri, _success = self.data_contract.apply_data_contract(  # type: ignore
            working_dir, entities, entity_locations, config.get_contract_metadata(), key_fields
        )

        entitity: self.data_contract.__entity_type__  # type: ignore
        for entity_name, entitity in entities.items():
            self.data_contract.write_parquet(entitity, fh.joinuri(write_to, entity_name))

        validation_failed: bool = False
        if fh.get_resource_exists(feedback_errors_uri):
            messages = load_feedback_messages(feedback_errors_uri)

            validation_failed = any(not user_message.is_informational for user_message in messages)

        if validation_failed:
            submission_status.validation_failed = True

        return submission_info, submission_status

    def data_contract_step(
        self,
        pool: Executor,
        file_transform_results: list[tuple[SubmissionInfo, Optional[SubmissionStatus]]],
    ) -> tuple[
        list[tuple[SubmissionInfo, SubmissionStatus]], list[tuple[SubmissionInfo, SubmissionStatus]]
    ]:
        """Step to validate the types of an untyped (stringly typed) parquet file"""
        self._logger.info("Starting data contract service")
        processed_files: list[tuple[SubmissionInfo, SubmissionStatus]] = []
        failed_processing: list[tuple[SubmissionInfo, SubmissionStatus]] = []
        dc_futures: list[tuple[SubmissionInfo, SubmissionStatus, Future]] = []

        for info, sub_status in file_transform_results:
            sub_status = (
                sub_status
                if sub_status
                else self.get_submission_status("data_contract", info.submission_id)
            )
            dc_futures.append(
                (
                    info,
                    sub_status,  # type: ignore
                    pool.submit(self.apply_data_contract, info, sub_status),
                )
            )

        for sub_info, sub_status, future in dc_futures:
            try:
                submission_info: SubmissionInfo
                submission_status: SubmissionStatus
                submission_info, submission_status = future.result()
            except AttributeError as exc:
                self._logger.error(f"Data Contract raised exception: {exc}")
                raise exc
            except PERMISSIBLE_EXCEPTIONS as exc:
                self._logger.warning(
                    f"Data Contract raised exception: {exc}. Will be retried later."
                )
                continue
            except Exception as exc:  # pylint: disable=W0703
                self._logger.exception("Data Contract raised exception:")
                dump_processing_errors(
                    fh.joinuri(self.processed_files_path, sub_info.submission_id),
                    "data_contract",
                    [CriticalProcessingError.from_exception(exc)],
                )
                sub_status.processing_failed = True
                failed_processing.append((sub_info, sub_status))
                continue

            processed_files.append((submission_info, submission_status))

        if len(processed_files) > 0:
            self._audit_tables.mark_business_rules(
                [
                    (sub_info.submission_id, submission_status.validation_failed)  # type: ignore
                    for sub_info, submission_status in processed_files
                ],
                job_run_id=self.job_run_id,
            )

        if len(failed_processing) > 0:
            self._audit_tables.mark_failed(
                [sub_info.submission_id for sub_info, _ in failed_processing],
                job_run_id=self.job_run_id,
            )

        return processed_files, failed_processing

    def apply_business_rules(
        self, submission_info: SubmissionInfo, submission_status: Optional[SubmissionStatus] = None
    ) -> tuple[SubmissionInfo, SubmissionStatus]:
        """Apply the business rules to a given submission, the submission may have failed at the
        data_contract step so this should be passed in as a bool
        """
        self._logger.info(f"Applying business rules to {submission_info.submission_id}")
        if not submission_status:
            submission_status = self.get_submission_status(
                "business_rules", submission_info.submission_id
            )

        if not self.rules_path:
            raise AttributeError("business rules path not provided.")

        if not self._reference_data_loader:
            raise AttributeError("reference data loader not provided.")

        if not self.processed_files_path:
            raise AttributeError("processed files path has not been provided.")

        if not self._step_implementations:
            raise AttributeError("step implementations has not been provided.")

        _, config, model_config = load_config(submission_info.dataset_id, self.rules_path)
        working_directory: URI = fh.joinuri(
            self._processed_files_path, submission_info.submission_id
        )
        ref_data = config.get_reference_data_config()
        rules = config.get_rule_metadata()
        reference_data = self._reference_data_loader(ref_data)  # type: ignore
        entities = {}
        contract = fh.joinuri(
            self.processed_files_path, submission_info.submission_id, "data_contract"
        )

        for parquet_uri, _ in fh.iter_prefix(contract):
            file_name = fh.get_file_name(parquet_uri)
            entities[file_name] = self.step_implementations.add_record_index(  # type: ignore
                self.step_implementations.read_parquet(parquet_uri)  # type: ignore
            )
            entities[f"Original{file_name}"] = self.step_implementations.read_parquet(parquet_uri)  # type: ignore

        sub_info_entity = (
            self._audit_tables._submission_info.conv_to_entity(  # pylint: disable=protected-access
                [submission_info]
            )
        )
        reference_data.entity_cache["dve_submission_info"] = sub_info_entity

        entity_manager = EntityManager(entities=entities, reference_data=reference_data)

        key_fields = {model: conf.reporting_fields for model, conf in model_config.items()}

        self.step_implementations.apply_rules(working_directory, entity_manager, rules, key_fields)  # type: ignore

        rule_messages = load_feedback_messages(
            get_feedback_errors_uri(working_directory, "business_rules")
        )
        submission_status.validation_failed = (
            any(not rule_message.is_informational for rule_message in rule_messages)
            or submission_status.validation_failed
        )

        for entity_name, entity in entity_manager.entities.items():
            projected = self._step_implementations.write_parquet(  # type: ignore
                entity,
                fh.joinuri(
                    self.processed_files_path,
                    submission_info.submission_id,
                    "business_rules",
                    entity_name,
                ),
            )
            entity_manager.entities[entity_name] = self.step_implementations.read_parquet(  # type: ignore
                projected
            )

        submission_status.number_of_records = self.get_entity_count(
            entity=entity_manager.entities[
                f"""Original{rules.global_variables.get(
                                              'entity',
                                              submission_info.dataset_id)}"""
            ]
        )

        return submission_info, submission_status

    def business_rule_step(
        self,
        pool: Executor,
        files: list[tuple[SubmissionInfo, Optional[SubmissionStatus]]],
    ) -> tuple[
        list[tuple[SubmissionInfo, SubmissionStatus]],
        list[tuple[SubmissionInfo, SubmissionStatus]],
        list[tuple[SubmissionInfo, SubmissionStatus]],
    ]:
        """Step to apply business rules (Step impl) to a typed parquet file"""
        self._logger.info("Starting business rules service")
        future_files: list[tuple[SubmissionInfo, SubmissionStatus, Future]] = []

        for submission_info, submission_status in files:
            submission_status = (
                submission_status
                if submission_status
                else self.get_submission_status(
                    step_name="business_rules",
                    submission_id=submission_info.submission_id,
                )
            )
            future_files.append(
                (
                    submission_info,
                    submission_status,
                    pool.submit(self.apply_business_rules, submission_info, submission_status),
                )
            )

        failed_processing: list[tuple[SubmissionInfo, SubmissionStatus]] = []
        unsucessful_files: list[tuple[SubmissionInfo, SubmissionStatus]] = []
        successful_files: list[tuple[SubmissionInfo, SubmissionStatus]] = []

        for sub_info, sub_status, future in future_files:
            try:
                submission_info: SubmissionInfo  # type: ignore
                submission_status: SubmissionStatus  # type: ignore
                submission_info, submission_status = future.result()
                if submission_status.validation_failed:  # type: ignore
                    unsucessful_files.append((submission_info, submission_status))  # type: ignore
                else:
                    successful_files.append((submission_info, submission_status))  # type: ignore
            except AttributeError as exc:
                self._logger.error(f"Business Rules raised exception: {exc}")
                raise exc
            except PERMISSIBLE_EXCEPTIONS as exc:
                self._logger.warning(
                    f"Business Rules raised exception: {exc}. Will be retried later."
                )
                continue
            except Exception as exc:  # pylint: disable=W0703
                self._logger.exception("Business Rules raised exception:")
                dump_processing_errors(
                    fh.joinuri(self.processed_files_path, sub_info.submission_id),
                    "business_rules",
                    [CriticalProcessingError.from_exception(exc)],
                )
                sub_status.processing_failed = True
                failed_processing.append((sub_info, sub_status))
                continue

        if len(unsucessful_files + successful_files) > 0:
            self._audit_tables.mark_error_report(
                [
                    (sub_info.submission_id, status.submission_result)
                    for sub_info, status in successful_files + unsucessful_files
                ],
                job_run_id=self.job_run_id,
            )

        if len(failed_processing) > 0:
            self._audit_tables.mark_failed(
                [si.submission_id for si, _ in failed_processing], job_run_id=self.job_run_id
            )

        return successful_files, unsucessful_files, failed_processing

    def _publish_error_aggregates(self, submission_id: str, aggregates_df: pl.DataFrame) -> URI:  # type: ignore
        """Store error aggregates as parquet for auditing"""
        output_uri = fh.joinuri(
            self.processed_files_path,
            submission_id,
            "audit",
            "error_aggregates.parquet",
        )
        if isinstance(_get_implementation(output_uri), LocalFilesystemImplementation):
            output_uri = fh.file_uri_to_local_path(output_uri)
            output_uri.parent.mkdir(parents=True, exist_ok=True)
            output_uri = output_uri.as_posix()
        aggregates_df = aggregates_df.with_columns(
            pl.lit(submission_id).alias("submission_id")  # type: ignore
        )
        aggregates_df.write_parquet(output_uri)
        return output_uri

    @lru_cache()  # noqa: B019
    def _get_error_dataframes(self, submission_id: str):
        if not self.processed_files_path:
            raise AttributeError("processed files path not provided")

        path = fh.joinuri(self.processed_files_path, submission_id, "errors")
        errors_dfs = [pl.DataFrame([], schema=ERROR_SCHEMA)]  # type: ignore

        for file, _ in fh.iter_prefix(path):
            if fh.get_file_suffix(file) != "jsonl":
                continue
            with fh.open_stream(file) as f:
                errors = None
                try:
                    errors = [json.loads(err) for err in f.readlines()]
                except UnicodeDecodeError:
                    self._logger.exception(f"Error reading file: {file}")
                    continue
                if not errors:
                    continue

                df = pl.DataFrame(errors, schema={key: pl.Utf8() for key in errors[0]})  # type: ignore
                df = df.with_columns(
                    pl.when(pl.col("Status") == pl.lit("error"))  # type: ignore
                    .then(pl.lit("Submission Failure"))  # type: ignore
                    .otherwise(pl.lit("Warning"))  # type: ignore
                    .alias("error_type")
                )
                df = df.select(
                    pl.col("Entity").alias("Table"),  # type: ignore
                    pl.col("error_type").alias("Type"),  # type: ignore
                    pl.col("ErrorCode").alias("Error_Code"),  # type: ignore
                    pl.col("ReportingField").alias("Data_Item"),  # type: ignore
                    pl.col("ErrorMessage").alias("Error"),  # type: ignore
                    pl.col("RecordIndex").alias("Record_Index"),
                    pl.col("Value"),  # type: ignore
                    pl.col("Key").alias("ID"),  # type: ignore
                    pl.col("Category"),  # type: ignore
                )
                df = df.select(
                    pl.col(column).cast(ERROR_SCHEMA[column])  # type: ignore
                    for column in df.columns
                )
                df = df.sort("Type", descending=False)  # type: ignore
                errors_dfs.append(df)

        errors_df = pl.concat(errors_dfs, how="align")  # type: ignore
        aggregates = calculate_aggregates(errors_df)

        return errors_df, aggregates

    def error_report(
        self, submission_info: SubmissionInfo, submission_status: Optional[SubmissionStatus] = None
    ) -> tuple[
        SubmissionInfo, SubmissionStatus, Optional[SubmissionStatisticsRecord], Optional[URI]
    ]:
        """Creates the error reports given a submission info and submission status"""
        self._logger.info(f"Generating error report for {submission_info.submission_id}")
        if not submission_status:
            submission_status = self.get_submission_status(
                "error_report", submission_info.submission_id
            )

        if not submission_status.processing_failed:
            submission_status.processing_failed = fh.get_resource_exists(
                get_processing_errors_uri(
                    fh.joinuri(self.processed_files_path, submission_info.submission_id)
                )
            )

        if not self.processed_files_path:
            raise AttributeError("processed files path not provided")

        self._logger.info("Reading error dataframes")
        errors_df, aggregates = self._get_error_dataframes(submission_info.submission_id)

        if not submission_status.number_of_records:
            sub_stats = None
        else:
            err_types = {
                rw.get("Type"): rw.get("Count")
                for rw in aggregates.group_by(pl.col("Type"))  # type: ignore
                .agg(pl.col("Count").sum())  # type: ignore
                .iter_rows(named=True)
            }
            sub_stats = SubmissionStatisticsRecord(
                submission_id=submission_info.submission_id,
                record_count=submission_status.number_of_records,
                number_record_rejections=err_types.get("Submission Failure", 0),
                number_warnings=err_types.get("Warning", 0),
            )

        summary_dict = {
            key.replace("_", " ").title(): value
            for key, value in submission_info.dict().items()
            if value is not None and not key.endswith("_updated")
        }
        summary_items = er.SummaryItems(
            submission_status=submission_status,
            summary_dict=summary_dict,
            row_headings=["Submission Failure", "Warning"],
        )

        workbook = er.ExcelFormat(
            error_details=errors_df, error_aggregates=aggregates
        ).excel_format(summary_items=summary_items)

        report_uri = fh.joinuri(
            self.processed_files_path,
            submission_info.submission_id,
            "error_reports",
            f"{submission_info.file_name}_{submission_info.file_extension.strip('.')}.xlsx",
        )
        self._logger.info("Writing error report")
        with fh.open_stream(report_uri, "wb") as stream:
            stream.write(er.ExcelFormat.convert_to_bytes(workbook))

        self._logger.info("Publishing error aggregates")
        self._publish_error_aggregates(submission_info.submission_id, aggregates)

        return submission_info, submission_status, sub_stats, report_uri

    def error_report_step(
        self,
        pool: Executor,
        processed: Iterable[tuple[SubmissionInfo, Optional[SubmissionStatus]]] = tuple(),
        failed_file_transformation: Iterable[tuple[SubmissionInfo, SubmissionStatus]] = tuple(),
    ) -> list[
        tuple[SubmissionInfo, SubmissionStatus, Union[None, SubmissionStatisticsRecord], URI]
    ]:
        """Step to produce error reports
        takes processed files and files that failed file transformation
        """
        self._logger.info("Starting error reports service")
        futures: list[tuple[SubmissionInfo, SubmissionStatus, Future]] = []
        reports: list[
            tuple[SubmissionInfo, SubmissionStatus, Union[None, SubmissionStatisticsRecord], URI]
        ] = []
        failed_processing: list[tuple[SubmissionInfo, SubmissionStatus]] = []

        for info, status in processed:
            status = (
                status
                if status
                else self.get_submission_status(
                    step_name="error_report",
                    submission_id=info.submission_id,
                )
            )
            futures.append((info, status, pool.submit(self.error_report, info, status)))

        for info_dict, status in failed_file_transformation:
            status.number_of_records = 0
            futures.append((info_dict, status, pool.submit(self.error_report, info_dict, status)))

        for sub_info, status, future in futures:
            try:
                submission_info, submission_status, submission_stats, feedback_uri = future.result()
                reports.append((submission_info, submission_status, submission_stats, feedback_uri))
            except AttributeError as exc:
                self._logger.error(f"Error reports raised exception: {exc}")
                raise exc
            except PERMISSIBLE_EXCEPTIONS as exc:
                self._logger.warning(
                    f"Error reports raised exception: {exc}. Will be retried later."
                )
                continue
            except Exception as exc:  # pylint: disable=W0703
                self._logger.exception("Error reports raised exception:")
                dump_processing_errors(
                    fh.joinuri(self.processed_files_path, sub_info.submission_id),
                    "error_report",
                    [CriticalProcessingError.from_exception(exc)],
                )
                status.processing_failed = True
                failed_processing.append((sub_info, status))
                continue

        if reports:
            self._audit_tables.mark_finished(
                [
                    (submission_info.submission_id, status.submission_result)  # type: ignore
                    for submission_info, status, _stats, _feedback_uri in reports
                ],
                job_run_id=self.job_run_id,
            )
            self._audit_tables.add_submission_statistics_records(
                [stats for _submission_info, _status, stats, _feedback_uri in reports if stats]
            )

        if failed_processing:
            self._audit_tables.mark_failed(
                [submission_info.submission_id for submission_info, _ in failed_processing],
                job_run_id=self.job_run_id,
            )

        return reports

    def cluster_pipeline_run(
        self, max_workers: int = 7
    ) -> Iterator[list[tuple[SubmissionInfo, SubmissionStatus, URI]]]:
        """Method for running the full DVE pipeline from start to finish."""
        submission_files = self._get_submission_files_for_run()

        # parse files to parquet order doesn't matter
        with ThreadPoolExecutor(max_workers=max_workers) as pool:
            with self._audit_tables:
                audited, _ = self.audit_received_file_step(pool, submission_files)
                # what should we do with files that fail auditing - likely to be an internal matter -
                # no error report required?
                transformed, failed_transformation = self.file_transformation_step(pool, audited)
                passed_contract, _failed_contract = self.data_contract_step(pool, transformed)  # type: ignore
                passed_br, failed_br, _failed_br_other_reason = self.business_rule_step(
                    pool, passed_contract  # type: ignore
                )

                report_results = self.error_report_step(
                    pool,
                    [
                        *passed_br,
                        *failed_br,
                    ],
                    failed_transformation,
                )

        yield from report_results  # type: ignore