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71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
# Copyright (C) 2021 Intel Corporation
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#
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# SPDX-License-Identifier: MIT
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from typing import Callable
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from django.db import transaction
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from cvat.apps.engine import models
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from cvat.apps.dataset_manager.task import TaskAnnotation
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from .annotation import AnnotationIR
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from .bindings import ProjectData
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from .formats.registry import make_exporter
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def export_project(project_id, dst_file, format_name,
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server_url=None, save_images=False):
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# For big tasks dump function may run for a long time and
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# we dont need to acquire lock after the task has been initialized from DB.
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# But there is the bug with corrupted dump file in case 2 or
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# more dump request received at the same time:
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# https://github.com/opencv/cvat/issues/217
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with transaction.atomic():
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project = ProjectAnnotation(project_id)
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project.init_from_db()
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exporter = make_exporter(format_name)
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with open(dst_file, 'wb') as f:
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project.export(f, exporter, host=server_url, save_images=save_images)
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class ProjectAnnotation:
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def __init__(self, pk: int):
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self.db_project = models.Project.objects.get(id=pk)
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self.db_tasks = models.Task.objects.filter(project__id=pk).order_by('id')
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self.annotation_irs: dict[int, AnnotationIR] = dict()
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def reset(self):
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for annotation_ir in self.annotation_irs.values():
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annotation_ir.reset()
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def put(self, data):
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raise NotImplementedError()
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def create(self, data):
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raise NotImplementedError()
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def update(self, data):
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raise NotImplementedError()
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def delete(self, data=None):
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raise NotImplementedError()
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def init_from_db(self):
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self.reset()
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for task in self.db_tasks:
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annotation = TaskAnnotation(pk=task.id)
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annotation.init_from_db()
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self.annotation_irs[task.id] = annotation.ir_data
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def export(self, dst_file: str, exporter: Callable, host: str='', **options):
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project_data = ProjectData(
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annotation_irs=self.annotation_irs,
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db_project=self.db_project,
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host=host
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)
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exporter(dst_file, project_data, **options)
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@property
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def data(self) -> dict:
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raise NotImplementedError() |