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45 lines
2.0 KiB
Python
45 lines
2.0 KiB
Python
from datetime import datetime, timezone
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from sqlalchemy import Column, DateTime, Integer, String
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from cognee.infrastructure.databases.relational import Base
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# The table has exactly one row, always with this id.
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GLOBAL_DATABASE_VERSION_ROW_ID = 1
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class GlobalDatabaseVersion(Base):
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"""Single-row, deployment-wide version + global-database migration tracking.
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``cognee_version`` is written on EVERY startup in BOTH access-control modes
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— the one place to read which Cognee release last ran against this
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deployment (the per-dataset ``dataset_database.cognee_version`` records
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only which release last migrated that dataset's databases).
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The ``global_migration_revision`` column applies only when backend access
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control is disabled: in that mode one global graph/vector pair backs every
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dataset (no ``dataset_database`` rows exist to carry revisions), so this
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row tracks the pair's last-applied migration revision. With access control
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enabled it stays NULL — the per-dataset revision lives on ``dataset_database``.
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Standalone on purpose: no Dataset FK and no sentinel rows in user-facing
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tables, so no query anywhere needs to filter anything out.
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"""
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__tablename__ = "global_database_version"
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id = Column(Integer, primary_key=True, default=GLOBAL_DATABASE_VERSION_ROW_ID)
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# Cognee release that last started against this deployment (both modes).
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cognee_version = Column(String, nullable=True)
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# Last-applied data-migration revision for the GLOBAL database pair
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# (access control off only; one chain covers graph + vector + ledger).
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# NULL means "no recorded revision" -> all migrations run.
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global_migration_revision = Column(String, nullable=True)
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# Why the last migration attempt failed (NULL when healthy).
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global_migration_last_error = Column(String, nullable=True)
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created_at = Column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
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updated_at = Column(DateTime(timezone=True), onupdate=lambda: datetime.now(timezone.utc))
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