superset/charts/commands/export.py

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# to you under the Apache License, Version 2.0 (the
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#
#   http://www.apache.org/licenses/LICENSE-2.0
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# specific language governing permissions and limitations
# under the License.
# isort:skip_file

import json
import logging
from typing import Iterator, Tuple

import yaml

from superset.charts.commands.exceptions import ChartNotFoundError
from superset.charts.dao import ChartDAO
from superset.datasets.commands.export import ExportDatasetsCommand
from superset.commands.export import ExportModelsCommand
from superset.models.slice import Slice
from superset.utils.dict_import_export import IMPORT_EXPORT_VERSION, sanitize

logger = logging.getLogger(__name__)


# keys present in the standard export that are not needed
REMOVE_KEYS = ["datasource_type", "datasource_name"]


class ExportChartsCommand(ExportModelsCommand):

    dao = ChartDAO
    not_found = ChartNotFoundError

    @staticmethod
    def export(model: Slice) -> Iterator[Tuple[str, str]]:
        chart_slug = sanitize(model.slice_name)
        file_name = f"charts/{chart_slug}.yaml"

        payload = model.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
        for key in REMOVE_KEYS:
            del payload[key]
        if "params" in payload:
            try:
                payload["params"] = json.loads(payload["params"])
            except json.decoder.JSONDecodeError:
                logger.info("Unable to decode `params` field: %s", payload["params"])

        payload["version"] = IMPORT_EXPORT_VERSION
        if model.table:
            payload["dataset_uuid"] = str(model.table.uuid)

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

        if model.table:
            yield from ExportDatasetsCommand([model.table.id]).run()