airflow_scheduler/.venv/Lib/site-packages/airflow/serialization/dag_dependency.py

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#   http://www.apache.org/licenses/LICENSE-2.0
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from __future__ import annotations

from dataclasses import dataclass


@dataclass(frozen=True, order=True)
class DagDependency:
    """
    Dataclass for representing dependencies between DAGs.

    These are calculated during serialization and attached to serialized DAGs.
    """

    source: str
    target: str
    dependency_type: str
    dependency_id: str | None = None

    @property
    def node_id(self):
        """Node ID for graph rendering."""
        val = f"{self.dependency_type}"
        if self.dependency_type not in ("dataset", "dataset-alias"):
            val += f":{self.source}:{self.target}"
        if self.dependency_id:
            val += f":{self.dependency_id}"
        return val