Pipeline Models
===============

Models for Haystack pipeline definitions and execution tracking.

Pipeline
--------

Stores user-defined Haystack pipeline configurations.

* ``name`` - Unique pipeline identifier
* ``definition`` - JSONB field with Haystack-native pipeline YAML
* ``version`` - Auto-incremented for cache invalidation
* ``is_active`` - Soft-delete flag

PipelineExecution
-----------------

Tracks individual pipeline execution instances.

* ``execution_id`` - UUID for external reference
* ``status`` - pending/running/completed/failed/cancelled
* ``input_data`` / ``output_data`` - JSONB data fields
* ``error_message`` - Error details on failure
* ``started_at`` / ``completed_at`` - Timing metadata

ExecutionStatus: ``PENDING``, ``RUNNING``, ``COMPLETED``, ``FAILED``, ``CANCELLED``

.. automodule:: ai4drpm.db.models.pipelines
   :members:
   :undoc-members: