superset/datasets/commands/export.py

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# to you under the Apache License, Version 2.0 (the
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# specific language governing permissions and limitations
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# isort:skip_file

import json
import logging
from typing import Iterator, Tuple

import yaml

from superset.commands.export import ExportModelsCommand
from superset.connectors.sqla.models import SqlaTable
from superset.datasets.commands.exceptions import DatasetNotFoundError
from superset.datasets.dao import DatasetDAO
from superset.utils.dict_import_export import IMPORT_EXPORT_VERSION, sanitize

logger = logging.getLogger(__name__)


class ExportDatasetsCommand(ExportModelsCommand):

    dao = DatasetDAO
    not_found = DatasetNotFoundError

    @staticmethod
    def export(model: SqlaTable) -> Iterator[Tuple[str, str]]:
        database_slug = sanitize(model.database.database_name)
        dataset_slug = sanitize(model.table_name)
        file_name = f"datasets/{database_slug}/{dataset_slug}.yaml"

        payload = model.export_to_dict(
            recursive=True,
            include_parent_ref=False,
            include_defaults=True,
            export_uuids=True,
        )

        payload["version"] = IMPORT_EXPORT_VERSION
        payload["database_uuid"] = str(model.database.uuid)

        file_content = yaml.safe_dump(payload, sort_keys=False)
        yield file_name, file_content

        # include database as well
        file_name = f"databases/{database_slug}.yaml"

        payload = model.database.export_to_dict(
            recursive=False,
            include_parent_ref=False,
            include_defaults=True,
            export_uuids=True,
        )
        # TODO (betodealmeida): move this logic to export_to_dict once this
        # becomes the default export endpoint
        if "extra" in payload:
            try:
                payload["extra"] = json.loads(payload["extra"])
            except json.decoder.JSONDecodeError:
                logger.info("Unable to decode `extra` field: %s", payload["extra"])

        payload["version"] = IMPORT_EXPORT_VERSION

        file_content = yaml.safe_dump(payload, sort_keys=False)
        yield file_name, file_content