Source code for airflow.providers.presto.assets.presto

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from __future__ import annotations

from typing import TYPE_CHECKING

from airflow.providers.common.compat.assets import Asset

if TYPE_CHECKING:
    from urllib.parse import SplitResult

    from airflow.providers.common.compat.openlineage.facet import Dataset as OpenLineageDataset



[docs]
def sanitize_uri(uri: SplitResult) -> SplitResult:
    if not uri.netloc:
        raise ValueError("URI format presto:// must contain a host")
    if uri.port is None:
        host = uri.netloc.rstrip(":")
        uri = uri._replace(netloc=f"{host}:8080")
    if len(uri.path.split("/")) != 4:  # Leading slash, catalog, schema, and table names.
        raise ValueError("URI format presto:// must contain a catalog, schema, and table")
    return uri




[docs]
def create_asset(
    *, host: str, catalog: str, schema: str, table: str, port: int = 8080, extra: dict | None = None
) -> Asset:
    return Asset(uri=f"presto://{host}:{port}/{catalog}/{schema}/{table}", extra=extra)




[docs]
def convert_asset_to_openlineage(asset: Asset, lineage_context) -> OpenLineageDataset:
    """Translate Asset with valid AIP-60 uri to OpenLineage with assistance from the hook."""
    from urllib.parse import urlsplit

    from airflow.providers.common.compat.openlineage.facet import Dataset as OpenLineageDataset

    parsed = urlsplit(asset.uri)
    _, catalog, schema, table = parsed.path.split("/")  # Leading slash, catalog, schema, and table names.
    return OpenLineageDataset(namespace=f"presto://{parsed.netloc}", name=f"{catalog}.{schema}.{table}")