nucliadb

Name	nucliadb JSON
Version	6.6.1.post4665 JSON
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home_page	None
Summary	NucliaDB
upload_time	2025-07-10 13:23:12
maintainer	None
docs_url	None
author	None
requires_python	<4,>=3.9
license	None
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            # nucliadb

This module contains most of the Python components for NucliaDB:

- ingest
- reader
- writer
- search
- train

# NucliaDB Migrations

This module is used to manage NucliaDB Migrations.

All migrations will be provided in the `migrations` folder and have a filename
that follows the structure: `[sequence]_[migration name].py`.
Where `sequence` is the order the migration should be run in with zero padding.
Example: `0001_migrate_data.py`.

Each migration should have the following:

```python
from nucliadb.migrator.context import ExecutionContext


async def migrate(context: ExecutionContext) -> None:
    """
    Non-kb type of migration. Migrate global data.
    """


async def migrate_kb(context: ExecutionContext, kbid: str) -> None:
    """
    Migrate kb.

    Must have both types of migrations.
    """
```


## How migrations are managed

- All migrations utilize a distributed lock to prevent simulateously running jobs
- Global migration state:
    - current version
    - target version
    - KBs to migrate
- KB Migration State:
    - current version

- Migrations are currently run with a deployment and will be continuously retried on failure.
- Running migrations in a deployment is to make sure a migration does not prevent code deployment.

            

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    "description": "# nucliadb\n\nThis module contains most of the Python components for NucliaDB:\n\n- ingest\n- reader\n- writer\n- search\n- train\n\n# NucliaDB Migrations\n\nThis module is used to manage NucliaDB Migrations.\n\nAll migrations will be provided in the `migrations` folder and have a filename\nthat follows the structure: `[sequence]_[migration name].py`.\nWhere `sequence` is the order the migration should be run in with zero padding.\nExample: `0001_migrate_data.py`.\n\nEach migration should have the following:\n\n```python\nfrom nucliadb.migrator.context import ExecutionContext\n\n\nasync def migrate(context: ExecutionContext) -> None:\n    \"\"\"\n    Non-kb type of migration. Migrate global data.\n    \"\"\"\n\n\nasync def migrate_kb(context: ExecutionContext, kbid: str) -> None:\n    \"\"\"\n    Migrate kb.\n\n    Must have both types of migrations.\n    \"\"\"\n```\n\n\n## How migrations are managed\n\n- All migrations utilize a distributed lock to prevent simulateously running jobs\n- Global migration state:\n    - current version\n    - target version\n    - KBs to migrate\n- KB Migration State:\n    - current version\n\n- Migrations are currently run with a deployment and will be continuously retried on failure.\n- Running migrations in a deployment is to make sure a migration does not prevent code deployment.\n",
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