81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
"""Celery Canvas workflow builder.
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Translates WorkflowDefinition config into a Celery Canvas (chain/group/chord).
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"""
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from __future__ import annotations
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import logging
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from celery import chain, group
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logger = logging.getLogger(__name__)
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def dispatch_workflow(
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workflow_type: str,
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order_line_id: str,
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params: dict | None = None,
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) -> str:
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"""Build and dispatch a Celery Canvas workflow. Returns the Celery task/group ID."""
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params = params or {}
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builders = {
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"still": _build_still,
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"still_graph": _build_still,
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"turntable": _build_turntable,
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"multi_angle": _build_multi_angle,
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"still_with_exports": _build_still_with_exports,
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}
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builder = builders.get(workflow_type)
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if not builder:
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raise ValueError(f"Unknown workflow type: {workflow_type!r}")
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canvas = builder(order_line_id, params)
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result = canvas.apply_async()
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return str(result.id)
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def _build_still(order_line_id: str, params: dict):
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"""Still render: resolves STEP path from order_line DB record."""
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from app.domains.rendering.tasks import render_order_line_still_task
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return chain(
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render_order_line_still_task.si(order_line_id, **params)
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)
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def _build_turntable(order_line_id: str, params: dict):
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"""Turntable animation: requires step_path + output_dir in params."""
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from app.domains.rendering.tasks import render_turntable_task
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step_path = params.get("step_path")
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output_dir = params.get("output_dir")
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if not step_path or not output_dir:
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raise ValueError(
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"turntable workflow requires 'step_path' and 'output_dir' in params"
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)
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remaining = {k: v for k, v in params.items() if k not in ("step_path", "output_dir")}
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return chain(
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render_turntable_task.si(step_path, output_dir, **remaining)
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)
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def _build_multi_angle(order_line_id: str, params: dict):
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"""Multi-angle stills: renders the same order_line from multiple rotation_z angles."""
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from app.domains.rendering.tasks import render_order_line_still_task
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angles = params.pop("angles", [0, 45, 90])
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return group(
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render_order_line_still_task.si(order_line_id, rotation_z=float(angle), **params)
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for angle in angles
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)
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def _build_still_with_exports(order_line_id: str, params: dict):
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"""Still render + .blend export.
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Pipeline:
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render_order_line_still_task → export_blend_for_order_line_task
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"""
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from app.domains.rendering.tasks import (
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render_order_line_still_task,
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export_blend_for_order_line_task,
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)
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return chain(
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render_order_line_still_task.si(order_line_id, **params),
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export_blend_for_order_line_task.si(order_line_id),
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)
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