#
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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
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# KIND, either express or implied.  See the License for the
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# under the License.
from __future__ import annotations

import copy
import json
import logging
import os
import random
import re
import shutil
import signal
import textwrap
import time
import zipfile
from collections import defaultdict, deque
from datetime import datetime, timedelta
from pathlib import Path
from socket import socket, socketpair
from unittest import mock
from unittest.mock import MagicMock

import msgspec
import pytest
import time_machine
from sqlalchemy import func, select
from uuid6 import uuid7

from airflow._shared.timezones import timezone
from airflow.callbacks.callback_requests import DagCallbackRequest
from airflow.dag_processing.bundles.base import BaseDagBundle
from airflow.dag_processing.bundles.manager import DagBundlesManager
from airflow.dag_processing.dagbag import DagBag
from airflow.dag_processing.manager import (
    BundleState,
    DagFileInfo,
    DagFileProcessorManager,
    DagFileStat,
)
from airflow.dag_processing.processor import DagFileParsingResult, DagFileProcessorProcess
from airflow.models import DagModel, DbCallbackRequest
from airflow.models.asset import TaskOutletAssetReference
from airflow.models.dag_version import DagVersion
from airflow.models.dagbundle import DagBundleModel
from airflow.models.dagcode import DagCode
from airflow.models.serialized_dag import SerializedDagModel
from airflow.models.team import Team
from airflow.utils.net import get_hostname
from airflow.utils.session import create_session

from tests_common.test_utils.compat import ParseImportError
from tests_common.test_utils.config import conf_vars
from tests_common.test_utils.dag import sync_dag_to_db
from tests_common.test_utils.db import (
    clear_db_assets,
    clear_db_callbacks,
    clear_db_dag_bundles,
    clear_db_dags,
    clear_db_import_errors,
    clear_db_runs,
    clear_db_serialized_dags,
    clear_db_teams,
)
from unit.models import TEST_DAGS_FOLDER

pytestmark = pytest.mark.db_test

logger = logging.getLogger(__name__)
TEST_DAG_FOLDER = Path(__file__).parents[1].resolve() / "dags"
DEFAULT_DATE = timezone.datetime(2016, 1, 1)


def _get_file_infos(files: list[str | Path]) -> list[DagFileInfo]:
    return [DagFileInfo(bundle_name="testing", bundle_path=TEST_DAGS_FOLDER, rel_path=Path(f)) for f in files]


def _get_versioned_file_info(file: str | Path, bundle_version: str = "v1") -> DagFileInfo:
    return DagFileInfo(
        bundle_name="testing",
        bundle_path=TEST_DAGS_FOLDER,
        rel_path=Path(file),
        bundle_version=bundle_version,
    )


def mock_get_mtime(file: Path):
    f = str(file)
    m = re.match(pattern=r".*ss=(.+?)\.\w+", string=f)
    if not m:
        raise ValueError(f"unexpected: {file}")
    match = m.group(1)
    if match == "<class 'FileNotFoundError'>":
        raise FileNotFoundError()
    try:
        return int(match)
    except Exception:
        raise ValueError(f"could not convert value {match} to int")


def encode_mtime_in_filename(val):
    from pathlib import PurePath

    out = []
    for fname, mtime in val:
        f = PurePath(PurePath(fname).name)
        addition = f"ss={str(mtime)}"
        out.append(f"{f.stem}-{addition}{f.suffix}")
    return out


def _create_zip_bundle_with_valid_and_broken_dags(zip_path: Path) -> None:
    with zipfile.ZipFile(zip_path, "w") as zf:
        zf.writestr(
            "valid_dag.py",
            textwrap.dedent(
                """
                from datetime import datetime

                from airflow.providers.standard.operators.empty import EmptyOperator
                from airflow.sdk import DAG

                with DAG(
                    dag_id="zip_valid_dag",
                    start_date=datetime(2024, 1, 1),
                    schedule=None,
                    catchup=False,
                ):
                    EmptyOperator(task_id="task")
                """
            ),
        )
        zf.writestr(
            "broken_dag.py",
            textwrap.dedent(
                """
                from airflow.sdk import DAG

                raise RuntimeError("broken zip dag")
                """
            ),
        )


class TestDagFileProcessorManager:
    @pytest.fixture(autouse=True)
    def _disable_examples(self):
        with conf_vars({("core", "load_examples"): "False"}):
            yield

    def setup_method(self):
        clear_db_teams()
        clear_db_assets()
        clear_db_runs()
        clear_db_serialized_dags()
        clear_db_dags()
        clear_db_callbacks()
        clear_db_import_errors()
        clear_db_dag_bundles()

    def teardown_class(self):
        clear_db_teams()
        clear_db_assets()
        clear_db_runs()
        clear_db_serialized_dags()
        clear_db_dags()
        clear_db_callbacks()
        clear_db_import_errors()
        clear_db_dag_bundles()

    def mock_processor(self, start_time: float | None = None) -> tuple[DagFileProcessorProcess, socket]:
        proc = MagicMock()
        logger_filehandle = MagicMock()
        proc.create_time.return_value = time.time()
        proc.wait.return_value = 0
        read_end, write_end = socketpair()
        ret = DagFileProcessorProcess(
            process_log=MagicMock(),
            id=uuid7(),
            pid=1234,
            process=proc,
            stdin=write_end,
            logger_filehandle=logger_filehandle,
            client=MagicMock(),
            bundle_name="testing",
            dag_file_rel_path="test_dag.py",
        )
        if start_time:
            ret.start_time = start_time
        ret._open_sockets.clear()
        return ret, read_end

    @pytest.fixture
    def clear_parse_import_errors(self):
        clear_db_import_errors()

    @pytest.mark.usefixtures("clear_parse_import_errors")
    @conf_vars({("core", "load_examples"): "False"})
    def test_remove_file_clears_import_error(self, tmp_path, configure_testing_dag_bundle):
        path_to_parse = tmp_path / "temp_dag.py"

        # Generate original import error
        path_to_parse.write_text("an invalid airflow DAG")

        with configure_testing_dag_bundle(path_to_parse):
            manager = DagFileProcessorManager(
                max_runs=1,
                processor_timeout=365 * 86_400,
            )

            manager.run()

            with create_session() as session:
                import_errors = session.scalars(select(ParseImportError)).all()
                assert len(import_errors) == 1

                path_to_parse.unlink()

            # Rerun the parser once the dag file has been removed
            manager.run()

            with create_session() as session:
                import_errors = session.scalars(select(ParseImportError)).all()

                assert len(import_errors) == 0
                session.rollback()

    @pytest.mark.usefixtures("clear_parse_import_errors")
    def test_clear_orphaned_import_errors_keeps_zip_inner_file_errors(self, session, tmp_path):
        zip_path = tmp_path / "test_zip.zip"
        _create_zip_bundle_with_valid_and_broken_dags(zip_path)

        session.add(
            ParseImportError(
                filename="test_zip.zip/broken_dag.py",
                bundle_name="testing",
                timestamp=timezone.utcnow(),
                stacktrace="zip import error",
            )
        )
        session.flush()

        manager = DagFileProcessorManager(max_runs=1)
        manager.clear_orphaned_import_errors(
            bundle_name="testing",
            observed_filelocs=manager._get_observed_filelocs(
                {
                    DagFileInfo(
                        bundle_name="testing",
                        rel_path=Path("test_zip.zip"),
                        bundle_path=tmp_path,
                    )
                }
            ),
            session=session,
        )
        session.flush()

        import_errors = session.scalars(select(ParseImportError)).all()
        assert len(import_errors) == 1
        assert import_errors[0].filename == "test_zip.zip/broken_dag.py"

    def test_get_observed_filelocs_expands_zip_inner_paths(self, tmp_path):
        zip_path = tmp_path / "test_zip.zip"
        _create_zip_bundle_with_valid_and_broken_dags(zip_path)

        manager = DagFileProcessorManager(max_runs=1)
        observed_filelocs = manager._get_observed_filelocs(
            {
                DagFileInfo(
                    bundle_name="testing",
                    rel_path=Path("test_zip.zip"),
                    bundle_path=tmp_path,
                )
            }
        )

        assert observed_filelocs == {
            "test_zip.zip/valid_dag.py",
            "test_zip.zip/broken_dag.py",
        }

    @pytest.mark.usefixtures("clear_parse_import_errors")
    def test_refresh_dag_bundles_keeps_zip_inner_file_errors(self, session, tmp_path, configure_dag_bundles):
        bundle_path = tmp_path / "bundleone"
        bundle_path.mkdir()
        zip_path = bundle_path / "test_zip.zip"
        _create_zip_bundle_with_valid_and_broken_dags(zip_path)

        session.add(
            ParseImportError(
                filename="test_zip.zip/broken_dag.py",
                bundle_name="bundleone",
                timestamp=timezone.utcnow(),
                stacktrace="zip import error",
            )
        )
        session.flush()

        with configure_dag_bundles({"bundleone": bundle_path}):
            DagBundlesManager().sync_bundles_to_db()
            manager = DagFileProcessorManager(max_runs=1)
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())
            manager._refresh_dag_bundles({})

        import_errors = session.scalars(select(ParseImportError)).all()
        assert len(import_errors) == 1
        assert import_errors[0].filename == "test_zip.zip/broken_dag.py"

    def test_refresh_dag_bundles_calls_legacy_deactivate_deleted_dags_override(
        self, tmp_path, configure_dag_bundles
    ):
        bundle_path = tmp_path / "bundleone"
        bundle_path.mkdir()
        dag_path = bundle_path / "test_dag.py"
        dag_path.write_text("from airflow.sdk import DAG\n")

        class BackwardCompatibleManager(DagFileProcessorManager):
            seen_bundle_name: str | None = None
            seen_present: set[DagFileInfo] | None = None

            def deactivate_deleted_dags(self, bundle_name: str, present: set[DagFileInfo]) -> None:
                self.seen_bundle_name = bundle_name
                self.seen_present = present

        with configure_dag_bundles({"bundleone": bundle_path}):
            DagBundlesManager().sync_bundles_to_db()
            manager = BackwardCompatibleManager(max_runs=1)
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())
            manager._refresh_dag_bundles({})

        assert manager.seen_bundle_name == "bundleone"
        assert manager.seen_present == {
            DagFileInfo(
                bundle_name="bundleone",
                rel_path=Path("test_dag.py"),
                bundle_path=bundle_path,
            )
        }

    @conf_vars({("core", "load_examples"): "False"})
    def test_max_runs_when_no_files(self, tmp_path):
        with conf_vars({("core", "dags_folder"): str(tmp_path)}):
            manager = DagFileProcessorManager(max_runs=1)
            manager.run()

        # TODO: AIP-66 no asserts?

    def test_start_new_processes_with_same_filepath(self, configure_testing_dag_bundle):
        """
        Test that when a processor already exist with a filepath, a new processor won't be created
        with that filepath. The filepath will just be removed from the list.
        """
        with configure_testing_dag_bundle("/tmp"):
            manager = DagFileProcessorManager(max_runs=1)
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())

        file_1 = DagFileInfo(bundle_name="testing", rel_path=Path("file_1.py"), bundle_path=TEST_DAGS_FOLDER)
        file_2 = DagFileInfo(bundle_name="testing", rel_path=Path("file_2.py"), bundle_path=TEST_DAGS_FOLDER)
        file_3 = DagFileInfo(bundle_name="testing", rel_path=Path("file_3.py"), bundle_path=TEST_DAGS_FOLDER)
        manager._file_queue = deque([file_1, file_2, file_3])

        # Mock that only one processor exists. This processor runs with 'file_1'
        manager._processors[file_1] = MagicMock()
        # Start New Processes
        with mock.patch.object(DagFileProcessorManager, "_create_process"):
            manager._start_new_processes()

        # Because of the config: '[dag_processor] parsing_processes = 2'
        # verify that only one extra process is created
        # and since a processor with 'file_1' already exists,
        # even though it is first in '_file_path_queue'
        # a new processor is created with 'file_2' and not 'file_1'.

        assert file_1 in manager._processors.keys()
        assert file_2 in manager._processors.keys()
        assert deque([file_3]) == manager._file_queue

    def test_handle_removed_files_when_processor_file_path_not_in_new_file_paths(self):
        """Ensure processors and file stats are removed when the file path is not in the new file paths"""
        manager = DagFileProcessorManager(max_runs=1)
        bundle_name = "testing"
        file = DagFileInfo(
            bundle_name=bundle_name, rel_path=Path("missing_file.txt"), bundle_path=TEST_DAGS_FOLDER
        )

        manager._processors[file] = MagicMock()
        manager._file_stats[file] = DagFileStat()

        manager.handle_removed_files({bundle_name: set()})
        assert manager._processors == {}
        assert file not in manager._file_stats

    def test_handle_removed_files_when_processor_file_path_is_present(self):
        """handle_removed_files should not purge files that are still present."""
        manager = DagFileProcessorManager(max_runs=1)
        bundle_name = "testing"
        file = DagFileInfo(bundle_name=bundle_name, rel_path=Path("abc.txt"), bundle_path=TEST_DAGS_FOLDER)
        mock_processor = MagicMock()

        manager._processors[file] = mock_processor

        manager.handle_removed_files(known_files={bundle_name: {file}})
        assert manager._processors == {file: mock_processor}

    def test_handle_removed_files_uses_public_extension_points(self):
        manager = DagFileProcessorManager(max_runs=1)
        bundle_name = "testing"
        file = DagFileInfo(bundle_name=bundle_name, rel_path=Path("abc.txt"), bundle_path=TEST_DAGS_FOLDER)

        with (
            mock.patch.object(manager, "purge_removed_files_from_queue") as purge_queue,
            mock.patch.object(manager, "terminate_orphan_processes") as terminate_processors,
            mock.patch.object(manager, "remove_orphaned_file_stats") as remove_stats,
        ):
            manager.handle_removed_files(known_files={bundle_name: {file}})

        purge_queue.assert_called_once_with(present={file})
        terminate_processors.assert_called_once_with(present={file})
        remove_stats.assert_called_once_with(present={file})

    def test_purge_removed_files_keeps_versioned_callback_file_when_unversioned_file_is_present(self):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("callbacks.py")
        present_file = _get_file_infos(["callbacks.py"])[0]

        manager._file_queue = deque([versioned_file])

        manager.purge_removed_files_from_queue(present={present_file})

        assert manager._file_queue == deque([versioned_file])

    def test_purge_removed_files_drops_versioned_callback_file_when_truly_absent(self):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("callbacks.py")

        manager._file_queue = deque([versioned_file])

        manager.purge_removed_files_from_queue(present=set())

        assert manager._file_queue == deque()

    def test_terminate_orphan_processes_keeps_versioned_callback_processor_when_unversioned_file_is_present(
        self,
    ):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("callbacks.py")
        present_file = _get_file_infos(["callbacks.py"])[0]
        processor = MagicMock()

        manager._processors[versioned_file] = processor

        manager.terminate_orphan_processes(present={present_file})

        assert manager._processors == {versioned_file: processor}
        processor.kill.assert_not_called()

    def test_terminate_orphan_processes_kills_processor_when_file_is_truly_absent(self):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("callbacks.py")
        processor = MagicMock()

        manager._processors[versioned_file] = processor

        manager.terminate_orphan_processes(present=set())

        assert manager._processors == {}
        processor.kill.assert_called_once_with(signal.SIGKILL)

    def test_remove_orphaned_file_stats_keeps_versioned_callback_stats_when_unversioned_file_is_present(self):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("callbacks.py")
        present_file = _get_file_infos(["callbacks.py"])[0]

        manager._file_stats[versioned_file] = DagFileStat()

        manager.remove_orphaned_file_stats(present={present_file})

        assert manager._file_stats == {versioned_file: DagFileStat()}

    def test_remove_orphaned_file_stats_drops_versioned_callback_stats_when_truly_absent(self):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("callbacks.py")

        manager._file_stats[versioned_file] = DagFileStat()

        manager.remove_orphaned_file_stats(present=set())

        assert manager._file_stats == {}

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "alphabetical"})
    def test_files_in_queue_sorted_alphabetically(self):
        """Test dag files are sorted alphabetically"""
        file_names = ["file_3.py", "file_2.py", "file_4.py", "file_1.py"]
        dag_files = _get_file_infos(file_names)
        ordered_dag_files = _get_file_infos(sorted(file_names))

        manager = DagFileProcessorManager(max_runs=1)
        known_files = {"some-bundle": set(dag_files)}
        assert manager._file_queue == deque()
        manager.prepare_file_queue(known_files=known_files)
        assert manager._file_queue == deque(ordered_dag_files)

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "random_seeded_by_host"})
    def test_files_sorted_random_seeded_by_host(self):
        """Test files are randomly sorted and seeded by host name"""
        f_infos = _get_file_infos(["file_3.py", "file_2.py", "file_4.py", "file_1.py"])
        known_files = {"anything": f_infos}
        manager = DagFileProcessorManager(max_runs=1)

        assert manager._file_queue == deque()
        manager.prepare_file_queue(known_files=known_files)  # using list over test for reproducibility
        random.Random(get_hostname()).shuffle(f_infos)
        expected = deque(f_infos)
        assert manager._file_queue == expected

        # Verify running it again produces same order
        manager._files = []
        manager.prepare_file_queue(known_files=known_files)
        assert manager._file_queue == expected

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "modified_time"})
    @mock.patch("airflow.utils.file.os.path.getmtime", new=mock_get_mtime)
    def test_files_sorted_by_modified_time(self):
        """Test files are sorted by modified time"""
        paths_with_mtime = [
            ("file_3.py", 3.0),
            ("file_2.py", 2.0),
            ("file_4.py", 5.0),
            ("file_1.py", 4.0),
        ]
        filenames = encode_mtime_in_filename(paths_with_mtime)
        dag_files = _get_file_infos(filenames)

        manager = DagFileProcessorManager(max_runs=1)

        assert manager._file_queue == deque()
        manager.prepare_file_queue(known_files={"any": set(dag_files)})
        ordered_files = _get_file_infos(
            [
                "file_4-ss=5.0.py",
                "file_1-ss=4.0.py",
                "file_3-ss=3.0.py",
                "file_2-ss=2.0.py",
            ]
        )
        assert manager._file_queue == deque(ordered_files)

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "modified_time"})
    @mock.patch("airflow.utils.file.os.path.getmtime", new=mock_get_mtime)
    def test_queued_files_exclude_missing_file(self):
        """Check that a file is not enqueued for processing if it has been deleted"""
        file_and_mtime = [("file_3.py", 2.0), ("file_2.py", 3.0), ("file_4.py", FileNotFoundError)]
        filenames = encode_mtime_in_filename(file_and_mtime)
        file_infos = _get_file_infos(filenames)
        manager = DagFileProcessorManager(max_runs=1)
        manager.prepare_file_queue(known_files={"any": set(file_infos)})
        ordered_files = _get_file_infos(["file_2-ss=3.0.py", "file_3-ss=2.0.py"])
        assert manager._file_queue == deque(ordered_files)

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "modified_time"})
    @mock.patch("airflow.utils.file.os.path.getmtime", new=mock_get_mtime)
    def test_add_new_file_to_parsing_queue(self):
        """Check that new file is added to parsing queue"""
        dag_files = _get_file_infos(["file_1-ss=2.0.py", "file_2-ss=3.0.py", "file_3-ss=4.0.py"])
        from random import Random

        Random("file_2.py").random()
        manager = DagFileProcessorManager(max_runs=1)

        manager.prepare_file_queue(known_files={"any": set(dag_files)})
        assert set(manager._file_queue) == set(dag_files)

        manager.prepare_file_queue(
            known_files={"any": set((*dag_files, *_get_file_infos(["file_4-ss=1.0.py"])))}
        )
        # manager._add_new_files_to_queue()
        ordered_files = _get_file_infos(
            [
                "file_3-ss=4.0.py",
                "file_2-ss=3.0.py",
                "file_1-ss=2.0.py",
                "file_4-ss=1.0.py",
            ]
        )
        assert manager._file_queue == deque(ordered_files)

    def test_add_new_files_to_queue_behavior(self):
        """
        Check that _add_new_files_to_queue:
        1. Adds new files to the front of the queue.
        2. Skips files that are currently being processed.
        3. Skips files that have already been processed (in _file_stats).
        4. Does not re-add files already in the queue.
        """
        manager = DagFileProcessorManager(max_runs=1)
        file_1 = DagFileInfo(bundle_name="testing", rel_path=Path("file_1.py"), bundle_path=TEST_DAGS_FOLDER)
        file_2 = DagFileInfo(bundle_name="testing", rel_path=Path("file_2.py"), bundle_path=TEST_DAGS_FOLDER)
        file_3 = DagFileInfo(bundle_name="testing", rel_path=Path("file_3.py"), bundle_path=TEST_DAGS_FOLDER)
        file_4 = DagFileInfo(bundle_name="testing", rel_path=Path("file_4.py"), bundle_path=TEST_DAGS_FOLDER)

        # Setup:
        # file_1 is already in the queue
        manager._file_queue = deque([file_1])

        # file_3 is currently being processed
        manager._processors[file_3] = MagicMock()

        # file_4 has already been processed
        manager._file_stats[file_4] = DagFileStat(num_dags=1)

        # known_files contains all four
        known_files = {"testing": {file_1, file_2, file_3, file_4}}

        manager._add_new_files_to_queue(known_files)

        # file_4 should be ignored (in file_stats)
        # file_3 should be ignored (processing)
        # file_2 should be at the front (new)
        # file_1 should remain (already in queue)
        assert list(manager._file_queue) == [file_2, file_1]

    def test_add_new_files_to_queue_skips_versioned_files_already_represented(self):
        manager = DagFileProcessorManager(max_runs=1)
        queued_versioned_file = _get_versioned_file_info("file_1.py")
        processed_versioned_file = _get_versioned_file_info("file_3.py")
        parsed_versioned_file = _get_versioned_file_info("file_4.py")
        new_file = _get_file_infos(["file_2.py"])[0]

        manager._file_queue = deque([queued_versioned_file])
        manager._processors[processed_versioned_file] = MagicMock()
        manager._file_stats[parsed_versioned_file] = DagFileStat(num_dags=1)

        known_files = {
            "testing": {
                _get_file_infos(["file_1.py"])[0],
                new_file,
                _get_file_infos(["file_3.py"])[0],
                _get_file_infos(["file_4.py"])[0],
            }
        }

        manager._add_new_files_to_queue(known_files)

        assert list(manager._file_queue) == [new_file, queued_versioned_file]

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "modified_time"})
    @mock.patch("airflow.utils.file.os.path.getmtime", new=mock_get_mtime)
    def test_resort_file_queue_by_mtime(self):
        """
        Check that existing files in the queue are re-sorted by mtime when calling _resort_file_queue,
        if sort mode is modified_time.
        """
        # Prepare some files with mtimes
        files_with_mtime = [
            ("file_1.py", 100.0),
            ("file_2.py", 200.0),
        ]
        filenames = encode_mtime_in_filename(files_with_mtime)
        dag_files = _get_file_infos(filenames)
        # dag_files[0] -> file_1 (mtime 100)
        # dag_files[1] -> file_2 (mtime 200)

        manager = DagFileProcessorManager(max_runs=1)

        # Populate queue with unsorted files
        # Queue: [file_1 (100), file_2 (200)]
        manager._file_queue = deque([dag_files[0], dag_files[1]])

        manager._resort_file_queue()

        # Verify resort happened: [file_2 (200), file_1 (100)]
        assert list(manager._file_queue) == [dag_files[1], dag_files[0]]

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "alphabetical"})
    def test_resort_file_queue_does_nothing_when_alphabetical(self):
        """
        Check that _resort_file_queue does NOT change the order if sort mode is alphabetical.
        """
        file_a = DagFileInfo(bundle_name="testing", rel_path=Path("a.py"), bundle_path=TEST_DAGS_FOLDER)
        file_b = DagFileInfo(bundle_name="testing", rel_path=Path("b.py"), bundle_path=TEST_DAGS_FOLDER)

        manager = DagFileProcessorManager(max_runs=1)

        # Populate queue in non-alphabetical order
        manager._file_queue = deque([file_b, file_a])

        manager._resort_file_queue()

        # Order should remain unchanged
        assert list(manager._file_queue) == [file_b, file_a]

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "modified_time"})
    @mock.patch("airflow.utils.file.os.path.getmtime", new=mock_get_mtime)
    def test_resort_file_queue_keeps_callbacks_at_front(self):
        """
        Check that files with pending callbacks stay at the front of the queue
        regardless of their modification time, and preserve their relative order.
        """
        files_with_mtime = [
            ("callback_1.py", 50.0),  # has callback, oldest mtime
            ("callback_2.py", 300.0),  # has callback, newest mtime
            ("regular_1.py", 100.0),  # no callback
            ("regular_2.py", 200.0),  # no callback
        ]
        filenames = encode_mtime_in_filename(files_with_mtime)
        dag_files = _get_file_infos(filenames)
        # dag_files[0] -> callback_1 (mtime 50)
        # dag_files[1] -> callback_2 (mtime 300)
        # dag_files[2] -> regular_1 (mtime 100)
        # dag_files[3] -> regular_2 (mtime 200)

        manager = DagFileProcessorManager(max_runs=1)

        # Queue order: callback_1, callback_2, regular_1, regular_2
        manager._file_queue = deque([dag_files[0], dag_files[1], dag_files[2], dag_files[3]])

        # Both callback files have pending callbacks
        manager._callback_to_execute[dag_files[0]] = [MagicMock()]
        manager._callback_to_execute[dag_files[1]] = [MagicMock()]

        manager._resort_file_queue()

        # Callback files should stay at front in original order (callback_1, callback_2)
        # despite callback_1 having the oldest mtime and callback_2 having the newest
        # Regular files should be sorted by mtime (newest first): regular_2 (200), regular_1 (100)
        assert list(manager._file_queue) == [dag_files[0], dag_files[1], dag_files[3], dag_files[2]]

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "modified_time"})
    @mock.patch("airflow.utils.file.os.path.getmtime")
    def test_recently_modified_file_is_parsed_with_mtime_mode(self, mock_getmtime):
        """
        Test recently updated files are processed even if min_file_process_interval is not reached
        """
        freezed_base_time = timezone.datetime(2020, 1, 5, 0, 0, 0)
        initial_file_1_mtime = (freezed_base_time - timedelta(minutes=5)).timestamp()
        dag_file = DagFileInfo(
            bundle_name="testing", rel_path=Path("file_1.py"), bundle_path=TEST_DAGS_FOLDER
        )
        known_files = {"does-not-matter": {dag_file}}
        mock_getmtime.side_effect = [initial_file_1_mtime]

        manager = DagFileProcessorManager(max_runs=3)

        # let's say the DAG was just parsed 10 seconds before the Freezed time
        last_finish_time = freezed_base_time - timedelta(seconds=10)
        manager._file_stats = {
            dag_file: DagFileStat(1, 0, last_finish_time, 1.0, 1, 1),
        }
        with time_machine.travel(freezed_base_time):
            assert manager._file_queue == deque()
            # File Path Queue will be empty as the "modified time" < "last finish time"
            manager.prepare_file_queue(known_files=known_files)
            assert manager._file_queue == deque()

        # Simulate the DAG modification by using modified_time which is greater
        # than the last_parse_time but still less than now - min_file_process_interval
        file_1_new_mtime = freezed_base_time - timedelta(seconds=5)
        file_1_new_mtime_ts = file_1_new_mtime.timestamp()
        with time_machine.travel(freezed_base_time):
            assert manager._file_queue == deque()
            # File Path Queue will be empty as the "modified time" < "last finish time"
            mock_getmtime.side_effect = [file_1_new_mtime_ts]
            manager.prepare_file_queue(known_files=known_files)
            # Check that file is added to the queue even though file was just recently passed
            assert manager._file_queue == deque([dag_file])
            assert last_finish_time < file_1_new_mtime
            assert (
                manager._file_process_interval
                > (freezed_base_time - manager._file_stats[dag_file].last_finish_time).total_seconds()
            )

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "alphabetical"})
    def test_prepare_file_queue_skips_file_when_versioned_processor_is_in_progress(self):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("file_1.py")
        known_file = _get_file_infos(["file_1.py"])[0]

        manager._processors[versioned_file] = MagicMock()

        manager.prepare_file_queue(known_files={"testing": {known_file}})

        assert manager._file_queue == deque()

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "alphabetical"})
    def test_prepare_file_queue_skips_file_when_versioned_stat_is_at_run_limit(self):
        manager = DagFileProcessorManager(max_runs=1)
        versioned_file = _get_versioned_file_info("file_1.py")
        known_file = _get_file_infos(["file_1.py"])[0]

        manager._file_stats[versioned_file] = DagFileStat(run_count=1)

        manager.prepare_file_queue(known_files={"testing": {known_file}})

        assert manager._file_queue == deque()

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "alphabetical"})
    def test_prepare_file_queue_skips_recently_processed_file_with_versioned_stats(self):
        manager = DagFileProcessorManager(max_runs=3)
        versioned_file = _get_versioned_file_info("file_1.py")
        known_file = _get_file_infos(["file_1.py"])[0]

        manager._file_stats[versioned_file] = DagFileStat(
            last_finish_time=timezone.utcnow() - timedelta(seconds=10),
            run_count=1,
        )

        manager.prepare_file_queue(known_files={"testing": {known_file}})

        assert manager._file_queue == deque()

    @conf_vars({("dag_processor", "file_parsing_sort_mode"): "modified_time"})
    @mock.patch("airflow.utils.file.os.path.getmtime")
    def test_recently_modified_file_uses_versioned_stats_without_creating_duplicate_entries(
        self, mock_getmtime
    ):
        freezed_base_time = timezone.datetime(2020, 1, 5, 0, 0, 0)
        versioned_file = _get_versioned_file_info("file_1.py")
        known_file = _get_file_infos(["file_1.py"])[0]
        known_files = {"testing": {known_file}}
        last_finish_time = freezed_base_time - timedelta(seconds=10)

        manager = DagFileProcessorManager(max_runs=3)
        manager._file_stats = {
            versioned_file: DagFileStat(1, 0, last_finish_time, 1.0, 1, 1),
        }

        with time_machine.travel(freezed_base_time):
            mock_getmtime.side_effect = [(freezed_base_time - timedelta(seconds=5)).timestamp()]
            manager.prepare_file_queue(known_files=known_files)

        assert manager._file_queue == deque([known_file])
        assert known_file not in manager._file_stats
        assert versioned_file in manager._file_stats

    def test_file_paths_in_queue_sorted_by_priority(self):
        from airflow.models.dagbag import DagPriorityParsingRequest

        parsing_request = DagPriorityParsingRequest(relative_fileloc="file_1.py", bundle_name="dags-folder")
        with create_session() as session:
            session.add(parsing_request)
            session.commit()

        file1 = DagFileInfo(
            bundle_name="dags-folder", rel_path=Path("file_1.py"), bundle_path=TEST_DAGS_FOLDER
        )
        file2 = DagFileInfo(
            bundle_name="dags-folder", rel_path=Path("file_2.py"), bundle_path=TEST_DAGS_FOLDER
        )

        manager = DagFileProcessorManager(max_runs=1)
        manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())
        manager._file_queue = deque([file2, file1])
        manager._queue_requested_files_for_parsing()
        assert manager._file_queue == deque([file1, file2])
        assert manager._force_refresh_bundles == {"dags-folder"}
        with create_session() as session2:
            parsing_request_after = session2.get(DagPriorityParsingRequest, parsing_request.id)
        assert parsing_request_after is None

    def test_parsing_requests_only_bundles_being_parsed(self, testing_dag_bundle):
        """Ensure the manager only handles parsing requests for bundles being parsed in this manager"""
        from airflow.models.dagbag import DagPriorityParsingRequest

        with create_session() as session:
            session.add(DagPriorityParsingRequest(relative_fileloc="file_1.py", bundle_name="dags-folder"))
            session.add(DagPriorityParsingRequest(relative_fileloc="file_x.py", bundle_name="testing"))
            session.commit()

        file1 = DagFileInfo(
            bundle_name="dags-folder", rel_path=Path("file_1.py"), bundle_path=TEST_DAGS_FOLDER
        )

        manager = DagFileProcessorManager(max_runs=1)
        manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())
        manager._queue_requested_files_for_parsing()
        assert manager._file_queue == deque([file1])
        with create_session() as session2:
            parsing_request_after = session2.scalars(select(DagPriorityParsingRequest)).all()
        assert len(parsing_request_after) == 1
        assert parsing_request_after[0].relative_fileloc == "file_x.py"

    def test_queue_requested_files_for_parsing_uses_public_claim_hook(self):
        file1 = DagFileInfo(
            bundle_name="dags-folder", rel_path=Path("file_1.py"), bundle_path=TEST_DAGS_FOLDER
        )
        file2 = DagFileInfo(
            bundle_name="dags-folder", rel_path=Path("file_2.py"), bundle_path=TEST_DAGS_FOLDER
        )

        class ApiBackedManager(DagFileProcessorManager):
            def claim_priority_files(self) -> list[DagFileInfo]:
                return [file1]

        manager = ApiBackedManager(max_runs=1)
        manager._file_queue = deque([file2])

        manager._queue_requested_files_for_parsing()

        assert manager._file_queue == deque([file1, file2])
        assert manager._force_refresh_bundles == {"dags-folder"}

    def test_request_bundle_refresh_marks_bundles_for_refresh(self):
        """`request_bundle_refresh` adds the bundles to the force-refresh set."""
        manager = DagFileProcessorManager(max_runs=1)
        assert manager._force_refresh_bundles == set()

        manager.request_bundle_refresh(["bundleone", "bundletwo"])
        manager.request_bundle_refresh(["bundleone"])  # idempotent

        assert manager._force_refresh_bundles == {"bundleone", "bundletwo"}

    def test_request_bundle_refresh_accepts_single_bundle_name(self):
        """`request_bundle_refresh` treats a string as one bundle name, not an iterable."""
        manager = DagFileProcessorManager(max_runs=1)

        manager.request_bundle_refresh("bundleone")

        assert manager._force_refresh_bundles == {"bundleone"}

    @pytest.mark.usefixtures("testing_dag_bundle")
    def test_scan_stale_dags(self, session):
        """
        Ensure that DAGs are marked inactive when the file is parsed but the
        DagModel.last_parsed_time is not updated.
        """
        manager = DagFileProcessorManager(
            max_runs=1,
            processor_timeout=10 * 60,
        )
        bundle = MagicMock()
        bundle.name = "testing"
        manager._dag_bundles = [bundle]

        test_dag_path = DagFileInfo(
            bundle_name="testing",
            rel_path=Path("test_example_bash_operator.py"),
            bundle_path=TEST_DAGS_FOLDER,
        )
        dagbag = DagBag(
            test_dag_path.absolute_path,
            include_examples=False,
            bundle_path=test_dag_path.bundle_path,
        )

        # Add stale DAG to the DB
        dag = dagbag.get_dag("test_example_bash_operator")
        sync_dag_to_db(dag, session=session)

        # Add DAG to the file_parsing_stats
        stat = DagFileStat(
            num_dags=1,
            import_errors=0,
            last_finish_time=timezone.utcnow() + timedelta(hours=1),
            last_duration=1,
            run_count=1,
            last_num_of_db_queries=1,
        )
        manager._files = [test_dag_path]
        manager._file_stats[test_dag_path] = stat

        active_dag_count = session.scalar(
            select(func.count(DagModel.dag_id)).where(
                ~DagModel.is_stale,
                DagModel.relative_fileloc == str(test_dag_path.rel_path),
                DagModel.bundle_name == test_dag_path.bundle_name,
            )
        )
        assert active_dag_count == 1

        manager._scan_stale_dags()

        active_dag_count = session.scalar(
            select(func.count(DagModel.dag_id)).where(
                ~DagModel.is_stale,
                DagModel.relative_fileloc == str(test_dag_path.rel_path),
                DagModel.bundle_name == test_dag_path.bundle_name,
            )
        )
        assert active_dag_count == 0

        serialized_dag_count = session.scalar(
            select(func.count(SerializedDagModel.dag_id)).where(SerializedDagModel.dag_id == dag.dag_id)
        )
        # Deactivating the DagModel should not delete the SerializedDagModel
        # SerializedDagModel gives history about Dags
        assert serialized_dag_count == 1

    @mock.patch("airflow.dag_processing.manager.BundleUsageTrackingManager")
    def test_cleanup_stale_bundle_versions_interval(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        manager.stale_bundle_cleanup_interval = 10

        manager._last_stale_bundle_cleanup_time = time.monotonic() - 20
        manager._cleanup_stale_bundle_versions()
        mock_bundle_manager.return_value.remove_stale_bundle_versions.assert_called_once()

        mock_bundle_manager.return_value.remove_stale_bundle_versions.reset_mock()
        manager._last_stale_bundle_cleanup_time = time.monotonic()
        manager._cleanup_stale_bundle_versions()
        mock_bundle_manager.return_value.remove_stale_bundle_versions.assert_not_called()

    @mock.patch("airflow.dag_processing.manager.BundleUsageTrackingManager")
    def test_cleanup_stale_bundle_versions(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        manager.cleanup_stale_bundle_versions()
        mock_bundle_manager.return_value.remove_stale_bundle_versions.assert_called_once_with()

    @pytest.mark.parametrize(
        ("log_target", "expected_subprocess_logs_to_stdout"),
        [
            ("stdout", True),
            ("file", False),
        ],
    )
    @mock.patch.object(DagFileProcessorManager, "_get_logger_for_dag_file")
    def test_create_process_subprocess_logs_to_stdout(
        self, mock_get_logger, log_target, expected_subprocess_logs_to_stdout
    ):
        mock_logger = MagicMock()
        mock_filehandle = MagicMock()
        mock_get_logger.return_value = [mock_logger, mock_filehandle]

        with conf_vars({("logging", "dag_processor_log_target"): log_target}):
            manager = DagFileProcessorManager(max_runs=1, processor_timeout=60)
            dag_file = DagFileInfo(
                bundle_name="testing", rel_path=Path("my_dag.py"), bundle_path=Path("/tmp")
            )
            with mock.patch.object(DagFileProcessorProcess, "start") as mock_start:
                manager._create_process(dag_file)

        _, kwargs = mock_start.call_args
        assert kwargs["subprocess_logs_to_stdout"] is expected_subprocess_logs_to_stdout

    def test_kill_timed_out_processors_kill(self):
        manager = DagFileProcessorManager(max_runs=1, processor_timeout=5)
        # Set start_time to ensure timeout occurs: start_time = current_time - (timeout + 1) = always (timeout + 1) seconds
        start_time = time.monotonic() - manager.processor_timeout - 1
        processor, _ = self.mock_processor(start_time=start_time)
        manager._processors = {
            DagFileInfo(
                bundle_name="testing", rel_path=Path("abc.txt"), bundle_path=TEST_DAGS_FOLDER
            ): processor
        }
        with mock.patch.object(type(processor), "kill") as mock_kill:
            manager._kill_timed_out_processors()
        mock_kill.assert_called_once_with(signal.SIGKILL)
        assert len(manager._processors) == 0
        processor.logger_filehandle.close.assert_called()

    def test_kill_timed_out_processors_no_kill(self):
        manager = DagFileProcessorManager(
            max_runs=1,
            processor_timeout=5,
        )

        processor, _ = self.mock_processor()
        processor._process.create_time.return_value = timezone.make_aware(datetime.max).timestamp()
        manager._processors = {
            DagFileInfo(
                bundle_name="testing", rel_path=Path("abc.txt"), bundle_path=TEST_DAGS_FOLDER
            ): processor
        }
        with mock.patch.object(type(processor), "kill") as mock_kill:
            manager._kill_timed_out_processors()
        mock_kill.assert_not_called()

    def test_handle_parsing_result_provides_its_own_session_when_caller_omits(self):
        """``handle_parsing_result`` is wrapped in ``@provide_session`` so subclasses overriding it can run without a caller-supplied session."""
        manager = DagFileProcessorManager(max_runs=1)
        file = DagFileInfo(bundle_name="testing", rel_path=Path("abc.txt"), bundle_path=TEST_DAGS_FOLDER)
        manager._file_stats[file] = DagFileStat()
        manager._bundle_versions["testing"] = "v1"

        processor, _ = self.mock_processor(start_time=time.monotonic() - 1)
        processor.had_callbacks = False
        processor.parsing_result = DagFileParsingResult(fileloc="abc.txt", serialized_dags=[])

        with mock.patch.object(manager, "persist_parsing_result") as mock_persist:
            manager.handle_parsing_result(file, processor)

        mock_persist.assert_called_once()
        assert mock_persist.call_args.kwargs["session"] is not None

    def test_handle_parsing_result_throttles_retry_when_first_persist_fails(self, session):
        """Persist errors should throttle retries without claiming persistence succeeded."""
        manager = DagFileProcessorManager(max_runs=1)
        file = DagFileInfo(bundle_name="testing", rel_path=Path("abc.txt"), bundle_path=TEST_DAGS_FOLDER)
        original_stat = DagFileStat()
        manager._file_stats[file] = original_stat
        manager._bundle_versions["testing"] = "v1"
        manager._file_process_interval = 60

        processor, _ = self.mock_processor(start_time=time.monotonic() - 1)
        processor.had_callbacks = False
        processor.parsing_result = DagFileParsingResult(fileloc="abc.txt", serialized_dags=[])

        with mock.patch.object(manager, "persist_parsing_result", side_effect=RuntimeError("boom")):
            manager.handle_parsing_result(file, processor, session=session)

        assert manager._file_stats[file] is not original_stat
        assert manager._file_stats[file].num_dags == 0
        assert manager._file_stats[file].import_errors == 0
        assert manager._file_stats[file].run_count == 1
        assert manager._file_stats[file].last_finish_time is not None
        assert manager._file_stats[file].last_duration is not None
        assert manager.processed_recently(timezone.utcnow(), file) is True

    def test_handle_parsing_result_updates_stats_after_successful_persist(self, session):
        manager = DagFileProcessorManager(max_runs=1)
        file = DagFileInfo(bundle_name="testing", rel_path=Path("abc.txt"), bundle_path=TEST_DAGS_FOLDER)
        original_stat = DagFileStat(
            num_dags=1,
            import_errors=0,
            last_finish_time=timezone.utcnow() - timedelta(hours=2),
            last_duration=1.0,
            run_count=3,
            last_num_of_db_queries=0,
        )
        manager._file_stats[file] = original_stat
        manager._bundle_versions["testing"] = "v1"

        processor, _ = self.mock_processor(start_time=time.monotonic() - 1)
        processor.had_callbacks = False
        processor.parsing_result = DagFileParsingResult(fileloc="abc.txt", serialized_dags=[])

        with mock.patch.object(manager, "persist_parsing_result") as mock_persist:
            manager.handle_parsing_result(file, processor, session=session)

        mock_persist.assert_called_once_with(
            bundle_name="testing",
            bundle_version="v1",
            parsing_result=processor.parsing_result,
            run_duration=mock.ANY,
            relative_fileloc="abc.txt",
            session=session,
        )
        assert manager._file_stats[file] is not original_stat
        assert manager._file_stats[file].run_count == 4
        assert manager._file_stats[file].last_finish_time is not None
        assert manager._file_stats[file].last_finish_time > original_stat.last_finish_time
        assert manager._file_stats[file].num_dags == 0

    def test_collect_results_processes_remaining_files_when_one_persist_fails(self, session):
        manager = DagFileProcessorManager(max_runs=1)
        file_a = DagFileInfo(bundle_name="testing", rel_path=Path("a.py"), bundle_path=TEST_DAGS_FOLDER)
        file_b = DagFileInfo(bundle_name="testing", rel_path=Path("b.py"), bundle_path=TEST_DAGS_FOLDER)
        base_stat = DagFileStat(
            num_dags=0,
            import_errors=0,
            last_finish_time=timezone.utcnow() - timedelta(hours=1),
            last_duration=1.0,
            run_count=1,
            last_num_of_db_queries=0,
        )
        manager._file_stats[file_a] = base_stat
        manager._file_stats[file_b] = copy.copy(base_stat)
        manager._bundle_versions["testing"] = "v1"

        proc_a, _ = self.mock_processor(start_time=time.monotonic() - 1)
        proc_a.had_callbacks = False
        proc_a.parsing_result = DagFileParsingResult(fileloc="a.py", serialized_dags=[])
        proc_b, _ = self.mock_processor(start_time=time.monotonic() - 1)
        proc_b.had_callbacks = False
        proc_b.parsing_result = DagFileParsingResult(fileloc="b.py", serialized_dags=[])

        manager._processors = {file_a: proc_a, file_b: proc_b}
        stat_a_before = manager._file_stats[file_a]
        stat_b_before = manager._file_stats[file_b]

        with mock.patch.object(
            manager,
            "persist_parsing_result",
            side_effect=[RuntimeError("boom"), None],
        ):
            manager._collect_results()

        assert manager._file_stats[file_a] is not stat_a_before
        assert manager._file_stats[file_a].num_dags == stat_a_before.num_dags
        assert manager._file_stats[file_a].import_errors == stat_a_before.import_errors
        assert manager._file_stats[file_a].run_count == stat_a_before.run_count + 1
        assert manager._file_stats[file_a].last_finish_time is not None
        assert manager._file_stats[file_b] is not stat_b_before
        assert manager._file_stats[file_b].run_count == 2
        assert len(manager._processors) == 0

    @pytest.mark.usefixtures("testing_dag_bundle")
    @pytest.mark.parametrize(
        ("callbacks", "path", "expected_body"),
        [
            pytest.param(
                [],
                "/opt/airflow/dags/test_dag.py",
                {
                    "file": "/opt/airflow/dags/test_dag.py",
                    "bundle_path": "/opt/airflow/dags",
                    "bundle_name": "testing",
                    "callback_requests": [],
                    "type": "DagFileParseRequest",
                },
            ),
            pytest.param(
                [
                    DagCallbackRequest(
                        filepath="dag_callback_dag.py",
                        dag_id="dag_id",
                        run_id="run_id",
                        bundle_name="testing",
                        bundle_version=None,
                        context_from_server=None,
                        is_failure_callback=False,
                    )
                ],
                "/opt/airflow/dags/dag_callback_dag.py",
                {
                    "file": "/opt/airflow/dags/dag_callback_dag.py",
                    "bundle_path": "/opt/airflow/dags",
                    "bundle_name": "testing",
                    "callback_requests": [
                        {
                            "filepath": "dag_callback_dag.py",
                            "bundle_name": "testing",
                            "bundle_version": None,
                            "msg": None,
                            "dag_id": "dag_id",
                            "run_id": "run_id",
                            "context_from_server": None,
                            "is_failure_callback": False,
                            "type": "DagCallbackRequest",
                        }
                    ],
                    "type": "DagFileParseRequest",
                },
            ),
        ],
    )
    def test_serialize_callback_requests(self, callbacks, path, expected_body):
        from airflow.sdk.execution_time.comms import _ResponseFrame

        processor, read_socket = self.mock_processor()
        processor._on_child_started(
            callbacks, path, bundle_path=Path("/opt/airflow/dags"), bundle_name="testing"
        )

        read_socket.settimeout(0.1)
        # Read response from the read end of the socket
        frame_len = int.from_bytes(read_socket.recv(4), "big")
        bytes = read_socket.recv(frame_len)
        frame = msgspec.msgpack.Decoder(_ResponseFrame).decode(bytes)

        assert frame.body == expected_body

    @conf_vars({("core", "load_examples"): "False"})
    @pytest.mark.execution_timeout(10)
    def test_dag_with_system_exit(self, configure_testing_dag_bundle):
        """
        Test to check that a DAG with a system.exit() doesn't break the scheduler.
        """
        dag_id = "exit_test_dag"
        dag_directory = TEST_DAG_FOLDER.parent / "dags_with_system_exit"

        # Delete the one valid DAG/SerializedDAG, and check that it gets re-created
        clear_db_dags()
        clear_db_serialized_dags()

        with configure_testing_dag_bundle(dag_directory):
            manager = DagFileProcessorManager(max_runs=1)
            manager.run()

        # Three files in folder should be processed
        assert sum(stat.run_count for stat in manager._file_stats.values()) == 3

        with create_session() as session:
            assert session.get(DagModel, dag_id) is not None

    @conf_vars({("core", "load_examples"): "False"})
    @mock.patch("airflow.dag_processing.manager.stats.timing")
    def test_send_file_processing_statsd_timing(
        self, statsd_timing_mock, tmp_path, configure_testing_dag_bundle
    ):
        dag_filename = "temp_dag.py"
        path_to_parse = tmp_path / dag_filename
        dag_code = textwrap.dedent(
            """
            from airflow import DAG
            dag = DAG(dag_id='temp_dag')
            """
        )
        path_to_parse.write_text(dag_code)

        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=1)
            manager.run()

        bundle_name = "testing"
        file_info = DagFileInfo(
            bundle_name=bundle_name,
            rel_path=Path(dag_filename),
            bundle_path=tmp_path,
        )
        last_runtime = manager._file_stats[file_info].last_duration
        statsd_timing_mock.assert_any_call(
            "dag_processing.last_duration",
            last_runtime,
            tags={"bundle_name": bundle_name, "file_name": dag_filename[:-3]},
        )

    @pytest.mark.usefixtures("testing_dag_bundle")
    def test_refresh_dags_dir_doesnt_delete_zipped_dags(
        self, tmp_path, session, configure_testing_dag_bundle, test_zip_path
    ):
        """Test DagFileProcessorManager._refresh_dag_dir method"""
        dagbag = DagBag(dag_folder=tmp_path, include_examples=False)
        dagbag.process_file(test_zip_path)
        dag = dagbag.get_dag("test_zip_dag")
        sync_dag_to_db(dag)

        with configure_testing_dag_bundle(test_zip_path):
            manager = DagFileProcessorManager(max_runs=1)
            manager.run()

        # Assert dag not deleted in SDM
        assert SerializedDagModel.has_dag("test_zip_dag")
        # assert code not deleted
        assert DagCode.has_dag(dag.dag_id)
        # assert dag still active
        assert session.get(DagModel, dag.dag_id).is_stale is False

    @pytest.mark.usefixtures("testing_dag_bundle")
    def test_refresh_dags_dir_deactivates_deleted_zipped_dags(
        self, session, tmp_path, configure_testing_dag_bundle, test_zip_path
    ):
        """Test DagFileProcessorManager._refresh_dag_dir method"""
        dag_id = "test_zip_dag"
        filename = "test_zip.zip"
        source_location = test_zip_path
        bundle_path = Path(tmp_path, "test_refresh_dags_dir_deactivates_deleted_zipped_dags")
        bundle_path.mkdir(exist_ok=True)
        zip_dag_path = bundle_path / filename
        shutil.copy(source_location, zip_dag_path)

        with configure_testing_dag_bundle(bundle_path):
            session.commit()
            manager = DagFileProcessorManager(max_runs=1)
            manager.run()

            assert SerializedDagModel.has_dag(dag_id)
            assert DagCode.has_dag(dag_id)
            assert DagVersion.get_latest_version(dag_id)
            dag = session.scalar(select(DagModel).where(DagModel.dag_id == dag_id))
            assert dag.is_stale is False

            os.remove(zip_dag_path)

            manager.run()

            assert SerializedDagModel.has_dag(dag_id)
            assert DagCode.has_dag(dag_id)
            assert DagVersion.get_latest_version(dag_id)
            dag = session.scalar(select(DagModel).where(DagModel.dag_id == dag_id))
            assert dag.is_stale is True

    def test_deactivate_deleted_dags(self, dag_maker, session):
        with dag_maker("test_dag1") as dag1:
            dag1.relative_fileloc = "test_dag1.py"
        with dag_maker("test_dag2") as dag2:
            dag2.relative_fileloc = "test_dag2.py"
        dag_maker.sync_dagbag_to_db()

        active_files = [
            DagFileInfo(
                bundle_name="dag_maker",
                rel_path=Path("test_dag1.py"),
                bundle_path=TEST_DAGS_FOLDER,
            ),
            # Mimic that the test_dag2.py file is deleted
        ]

        manager = DagFileProcessorManager(max_runs=1)
        manager.deactivate_deleted_dags("dag_maker", set(active_files))

        # The DAG from test_dag1.py is still active
        assert session.get(DagModel, "test_dag1").is_stale is False
        # and the DAG from test_dag2.py is deactivated
        assert session.get(DagModel, "test_dag2").is_stale is True

    @pytest.mark.parametrize(
        ("rel_filelocs", "expected_return", "expected_dag1_stale", "expected_dag2_stale"),
        [
            pytest.param(
                {"test_dag1.py"},  # Only dag1 present, dag2 deleted
                True,  # Should return True
                False,  # dag1 should not be stale
                True,  # dag2 should be stale
                id="dags_deactivated",
            ),
            pytest.param(
                {"test_dag1.py", "test_dag2.py"},  # Both files present
                False,  # Should return False
                False,  # dag1 should not be stale
                False,  # dag2 should not be stale
                id="no_dags_deactivated",
            ),
        ],
    )
    def test_deactivate_deleted_dags_return_value(
        self, dag_maker, session, rel_filelocs, expected_return, expected_dag1_stale, expected_dag2_stale
    ):
        """Test that DagModel.deactivate_deleted_dags returns correct boolean value."""
        with dag_maker("test_dag1") as dag1:
            dag1.relative_fileloc = "test_dag1.py"
        with dag_maker("test_dag2") as dag2:
            dag2.relative_fileloc = "test_dag2.py"
        dag_maker.sync_dagbag_to_db()

        any_deactivated = DagModel.deactivate_deleted_dags(
            bundle_name="dag_maker",
            rel_filelocs=rel_filelocs,
            session=session,
        )

        assert any_deactivated is expected_return
        assert session.get(DagModel, "test_dag1").is_stale is expected_dag1_stale
        assert session.get(DagModel, "test_dag2").is_stale is expected_dag2_stale

    @pytest.mark.parametrize(
        ("active_files", "should_call_cleanup"),
        [
            pytest.param(
                [
                    DagFileInfo(
                        bundle_name="dag_maker",
                        rel_path=Path("test_dag1.py"),
                        bundle_path=TEST_DAGS_FOLDER,
                    ),
                    # test_dag2.py is deleted
                ],
                True,  # Should call cleanup
                id="dags_deactivated",
            ),
            pytest.param(
                [
                    DagFileInfo(
                        bundle_name="dag_maker",
                        rel_path=Path("test_dag1.py"),
                        bundle_path=TEST_DAGS_FOLDER,
                    ),
                    DagFileInfo(
                        bundle_name="dag_maker",
                        rel_path=Path("test_dag2.py"),
                        bundle_path=TEST_DAGS_FOLDER,
                    ),
                ],
                False,  # Should NOT call cleanup
                id="no_dags_deactivated",
            ),
        ],
    )
    @mock.patch("airflow.dag_processing.manager.remove_references_to_deleted_dags")
    def test_manager_deactivate_deleted_dags_cleanup_behavior(
        self, mock_remove_references, dag_maker, session, active_files, should_call_cleanup
    ):
        """Test that manager conditionally calls remove_references_to_deleted_dags based on whether DAGs were deactivated."""
        with dag_maker("test_dag1") as dag1:
            dag1.relative_fileloc = "test_dag1.py"
        with dag_maker("test_dag2") as dag2:
            dag2.relative_fileloc = "test_dag2.py"
        dag_maker.sync_dagbag_to_db()

        manager = DagFileProcessorManager(max_runs=1)
        manager.deactivate_deleted_dags("dag_maker", set(active_files))

        if should_call_cleanup:
            mock_remove_references.assert_called_once()
        else:
            mock_remove_references.assert_not_called()

    @conf_vars({("core", "load_examples"): "False"})
    def test_fetch_callbacks_from_database(self, configure_testing_dag_bundle):
        """Test _fetch_callbacks_from_db returns callbacks ordered by priority_weight desc."""

        dag_filepath = TEST_DAG_FOLDER / "test_on_failure_callback_dag.py"

        callback1 = DagCallbackRequest(
            dag_id="test_start_date_scheduling",
            bundle_name="testing",
            bundle_version=None,
            filepath="test_on_failure_callback_dag.py",
            is_failure_callback=True,
            run_id="123",
        )
        callback2 = DagCallbackRequest(
            dag_id="test_start_date_scheduling",
            bundle_name="testing",
            bundle_version=None,
            filepath="test_on_failure_callback_dag.py",
            is_failure_callback=True,
            run_id="456",
        )

        with create_session() as session:
            session.add(DbCallbackRequest(callback=callback1, priority_weight=11))
            session.add(DbCallbackRequest(callback=callback2, priority_weight=10))

        with configure_testing_dag_bundle(dag_filepath):
            manager = DagFileProcessorManager(max_runs=1)
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())

            with create_session() as session:
                callbacks = manager._fetch_callbacks_from_db(session=session)

                # Should return callbacks ordered by priority_weight desc (highest first)
                assert callbacks[0].run_id == "123"
                assert callbacks[1].run_id == "456"

                assert len(session.scalars(select(DbCallbackRequest)).all()) == 0

    @conf_vars(
        {
            ("dag_processor", "max_callbacks_per_loop"): "2",
            ("core", "load_examples"): "False",
        }
    )
    def test_fetch_callbacks_from_database_max_per_loop(self, tmp_path, configure_testing_dag_bundle):
        """Test DagFileProcessorManager.fetch_callbacks method."""
        dag_filepath = TEST_DAG_FOLDER / "test_on_failure_callback_dag.py"

        with create_session() as session:
            for i in range(5):
                callback = DagCallbackRequest(
                    dag_id="test_start_date_scheduling",
                    bundle_name="testing",
                    bundle_version=None,
                    filepath="test_on_failure_callback_dag.py",
                    is_failure_callback=True,
                    run_id=str(i),
                )
                session.add(DbCallbackRequest(callback=callback, priority_weight=i))

        with configure_testing_dag_bundle(dag_filepath):
            manager = DagFileProcessorManager(max_runs=1)

            with create_session() as session:
                manager.run()
                assert len(session.scalars(select(DbCallbackRequest)).all()) == 3

            with create_session() as session:
                manager.run()
                assert len(session.scalars(select(DbCallbackRequest)).all()) == 1

    @conf_vars({("core", "load_examples"): "False"})
    def test_fetch_callbacks_ignores_other_bundles(self, configure_testing_dag_bundle):
        """Ensure callbacks for bundles not owned by current dag processor manager are ignored and not deleted."""

        dag_filepath = TEST_DAG_FOLDER / "test_on_failure_callback_dag.py"

        # Create two callbacks: one for the active 'testing' bundle and one for a different bundle
        matching = DagCallbackRequest(
            dag_id="test_start_date_scheduling",
            bundle_name="testing",
            bundle_version=None,
            filepath="test_on_failure_callback_dag.py",
            is_failure_callback=True,
            run_id="match",
        )
        non_matching = DagCallbackRequest(
            dag_id="test_start_date_scheduling",
            bundle_name="other-bundle",
            bundle_version=None,
            filepath="test_on_failure_callback_dag.py",
            is_failure_callback=True,
            run_id="no-match",
        )

        with create_session() as session:
            session.add(DbCallbackRequest(callback=matching, priority_weight=100))
            session.add(DbCallbackRequest(callback=non_matching, priority_weight=200))

        with configure_testing_dag_bundle(dag_filepath):
            manager = DagFileProcessorManager(max_runs=1)
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())

            with create_session() as session:
                callbacks = manager._fetch_callbacks_from_db(session=session)

                # Only the matching callback should be returned
                assert [c.run_id for c in callbacks] == ["match"]

                # The non-matching callback should remain in the DB
                remaining = session.scalars(select(DbCallbackRequest)).all()
                assert len(remaining) == 1
                # Decode remaining request and verify it's for the other bundle
                remaining_req = remaining[0].get_callback_request()
                assert remaining_req.bundle_name == "other-bundle"

    @conf_vars(
        {
            ("dag_processor", "max_callbacks_per_loop"): "2",
            ("core", "load_examples"): "False",
        }
    )
    def test_fetch_callbacks_filters_by_bundle_before_limit(self, configure_testing_dag_bundle):
        dag_filepath = TEST_DAG_FOLDER / "test_on_failure_callback_dag.py"

        matching = DagCallbackRequest(
            dag_id="test_start_date_scheduling",
            bundle_name="testing",
            bundle_version=None,
            filepath="test_on_failure_callback_dag.py",
            is_failure_callback=True,
            run_id="match",
        )
        non_matching_1 = DagCallbackRequest(
            dag_id="test_start_date_scheduling",
            bundle_name="other-bundle-a",
            bundle_version=None,
            filepath="test_on_failure_callback_dag.py",
            is_failure_callback=True,
            run_id="no-match-1",
        )
        non_matching_2 = DagCallbackRequest(
            dag_id="test_start_date_scheduling",
            bundle_name="other-bundle-b",
            bundle_version=None,
            filepath="test_on_failure_callback_dag.py",
            is_failure_callback=True,
            run_id="no-match-2",
        )

        with create_session() as session:
            session.add(DbCallbackRequest(callback=non_matching_1, priority_weight=300))
            session.add(DbCallbackRequest(callback=non_matching_2, priority_weight=200))
            session.add(DbCallbackRequest(callback=matching, priority_weight=100))

        with configure_testing_dag_bundle(dag_filepath):
            manager = DagFileProcessorManager(max_runs=1)
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())

            with create_session() as session:
                callbacks = manager._fetch_callbacks_from_db(session=session)

                assert [c.run_id for c in callbacks] == ["match"]

                remaining = session.scalars(select(DbCallbackRequest)).all()
                assert len(remaining) == 2
                assert {callback.bundle_name for callback in remaining} == {
                    "other-bundle-a",
                    "other-bundle-b",
                }

    @mock.patch.object(DagFileProcessorManager, "_get_logger_for_dag_file")
    def test_callback_queue(self, mock_get_logger, configure_testing_dag_bundle):
        mock_logger = MagicMock()
        mock_filehandle = MagicMock()
        mock_get_logger.return_value = [mock_logger, mock_filehandle]

        tmp_path = "/green_eggs/ham"
        with configure_testing_dag_bundle(tmp_path):
            # given
            manager = DagFileProcessorManager(
                max_runs=1,
                processor_timeout=365 * 86_400,
            )
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())

            dag1_path = DagFileInfo(
                bundle_name="testing", rel_path=Path("file1.py"), bundle_path=Path(tmp_path)
            )
            dag1_req1 = DagCallbackRequest(
                filepath="file1.py",
                dag_id="dag1",
                run_id="run1",
                is_failure_callback=False,
                bundle_name="testing",
                bundle_version=None,
                msg=None,
            )
            dag1_req2 = DagCallbackRequest(
                filepath="file1.py",
                dag_id="dag1",
                run_id="run1",
                is_failure_callback=False,
                bundle_name="testing",
                bundle_version=None,
                msg=None,
            )

            dag2_path = DagFileInfo(
                bundle_name="testing", rel_path=Path("file2.py"), bundle_path=Path(tmp_path)
            )
            dag2_req1 = DagCallbackRequest(
                filepath="file2.py",
                dag_id="dag2",
                run_id="run1",
                bundle_name=dag2_path.bundle_name,
                bundle_version=None,
                is_failure_callback=False,
                msg=None,
            )

            # when
            manager._add_callback_to_queue(dag1_req1)
            manager._add_callback_to_queue(dag2_req1)

            # then - requests should be in manager's queue, with dag2 ahead of dag1 (because it was added last)
            assert manager._file_queue == deque([dag2_path, dag1_path])
            assert set(manager._callback_to_execute.keys()) == {
                dag1_path,
                dag2_path,
            }
            assert manager._callback_to_execute[dag2_path] == [dag2_req1]

            # update the queue, although the callback is registered
            assert manager._file_queue == deque([dag2_path, dag1_path])

            # when
            manager._add_callback_to_queue(dag1_req2)
            # Since dag1_req2 is same as dag1_req1, we now have 2 items in file_path_queue
            assert manager._file_queue == deque([dag2_path, dag1_path])
            assert manager._callback_to_execute[dag1_path] == [
                dag1_req1,
                dag1_req2,
            ]

            with mock.patch.object(
                DagFileProcessorProcess, "start", side_effect=lambda *args, **kwargs: self.mock_processor()
            ) as start:
                manager._start_new_processes()
            # Callbacks passed to processor
            assert start.call_args_list == [
                mock.call(
                    id=mock.ANY,
                    path=Path(dag2_path.bundle_path, dag2_path.rel_path),
                    bundle_path=dag2_path.bundle_path,
                    bundle_name="testing",
                    dag_file_rel_path=str(dag2_path.rel_path),
                    callbacks=[dag2_req1],
                    selector=mock.ANY,
                    logger=mock_logger,
                    logger_filehandle=mock_filehandle,
                    subprocess_logs_to_stdout=False,
                    client=mock.ANY,
                ),
                mock.call(
                    id=mock.ANY,
                    path=Path(dag1_path.bundle_path, dag1_path.rel_path),
                    bundle_path=dag1_path.bundle_path,
                    bundle_name="testing",
                    dag_file_rel_path=str(dag1_path.rel_path),
                    callbacks=[dag1_req1, dag1_req2],
                    selector=mock.ANY,
                    logger=mock_logger,
                    logger_filehandle=mock_filehandle,
                    subprocess_logs_to_stdout=False,
                    client=mock.ANY,
                ),
            ]
            # And removed from the queue
            assert dag1_path not in manager._callback_to_execute
            assert dag2_path not in manager._callback_to_execute

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_prepare_callback_bundle_initializes_versioned_bundle(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        bundle = MagicMock(spec=BaseDagBundle)
        bundle.supports_versioning = True
        mock_bundle_manager.return_value.get_bundle.return_value = bundle

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version="some_commit_hash",
            msg=None,
        )

        assert manager.prepare_callback_bundle(request) is bundle
        bundle.initialize.assert_called_once()

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_prepare_callback_bundle_skips_initialize_for_unversioned_request(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        bundle = MagicMock(spec=BaseDagBundle)
        bundle.supports_versioning = True
        mock_bundle_manager.return_value.get_bundle.return_value = bundle

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version=None,
            msg=None,
        )

        assert manager.prepare_callback_bundle(request) is bundle
        bundle.initialize.assert_not_called()

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_prepare_callback_bundle_skips_initialize_for_non_versioning_bundle(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        bundle = MagicMock(spec=BaseDagBundle)
        bundle.supports_versioning = False
        mock_bundle_manager.return_value.get_bundle.return_value = bundle

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version="some_commit_hash",
            msg=None,
        )

        assert manager.prepare_callback_bundle(request) is bundle
        bundle.initialize.assert_not_called()

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_prepare_callback_bundle_returns_none_when_unconfigured(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        mock_bundle_manager.return_value.get_bundle.side_effect = ValueError("missing bundle")

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version="some_commit_hash",
            msg=None,
        )

        assert manager.prepare_callback_bundle(request) is None

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_prepare_callback_bundle_returns_none_when_initialize_fails(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        bundle = MagicMock(spec=BaseDagBundle)
        bundle.supports_versioning = True
        bundle.initialize.side_effect = RuntimeError("clone failed")
        mock_bundle_manager.return_value.get_bundle.return_value = bundle

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version="some_commit_hash",
            msg=None,
        )

        assert manager.prepare_callback_bundle(request) is None
        bundle.initialize.assert_called_once()

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_add_callback_queues_file_info_on_success(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        bundle = MagicMock(spec=BaseDagBundle)
        bundle.supports_versioning = True
        bundle.path = Path("/tmp/bundle")
        mock_bundle_manager.return_value.get_bundle.return_value = bundle

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version="some_commit_hash",
            msg=None,
        )

        manager._add_callback_to_queue(request)

        bundle.initialize.assert_called_once()
        assert manager._callback_to_execute
        [(file_info, requests)] = manager._callback_to_execute.items()
        assert file_info.rel_path == Path("file1.py")
        assert file_info.bundle_name == "testing"
        assert requests == [request]

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_add_callback_skips_when_bundle_init_fails(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        bundle = MagicMock(spec=BaseDagBundle)
        bundle.supports_versioning = True
        bundle.initialize.side_effect = Exception("clone failed")
        mock_bundle_manager.return_value.get_bundle.return_value = bundle

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version="some_commit_hash",
            msg=None,
        )

        manager._add_callback_to_queue(request)

        bundle.initialize.assert_called_once()
        assert not manager._callback_to_execute

    @mock.patch("airflow.dag_processing.manager.DagBundlesManager")
    def test_add_callback_skips_when_bundle_unconfigured(self, mock_bundle_manager):
        manager = DagFileProcessorManager(max_runs=1)
        mock_bundle_manager.return_value.get_bundle.side_effect = ValueError("missing bundle")

        request = DagCallbackRequest(
            filepath="file1.py",
            dag_id="dag1",
            run_id="run1",
            is_failure_callback=False,
            bundle_name="testing",
            bundle_version="some_commit_hash",
            msg=None,
        )

        manager._add_callback_to_queue(request)

        assert not manager._callback_to_execute

    def test_fetch_callbacks_delegates_to_private_method(self):
        manager = DagFileProcessorManager(max_runs=1)
        expected: list = [mock.sentinel.callback]
        with mock.patch.object(manager, "_fetch_callbacks_from_db", return_value=expected) as private:
            assert manager.fetch_callbacks() is expected
        private.assert_called_once_with()

    def test_dag_with_assets(self, session, configure_testing_dag_bundle):
        """'Integration' test to ensure that the assets get parsed and stored correctly for parsed dags."""
        test_dag_path = str(TEST_DAG_FOLDER / "test_assets.py")

        with configure_testing_dag_bundle(test_dag_path):
            manager = DagFileProcessorManager(
                max_runs=1,
                processor_timeout=365 * 86_400,
            )
            manager.run()

        dag_model = session.get(DagModel, ("dag_with_skip_task"))
        assert dag_model.task_outlet_asset_references == [
            TaskOutletAssetReference(asset_id=mock.ANY, dag_id="dag_with_skip_task", task_id="skip_task")
        ]

    def test_bundles_are_refreshed(self):
        """
        Ensure bundles are refreshed by the manager, when necessary.

        - always refresh all bundles when starting the manager
        - refresh if the bundle hasn't been refreshed in the refresh_interval
        - when the latest_version in the db doesn't match the version this manager knows about
        """
        config = [
            {
                "name": "bundleone",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {"path": "/dev/null", "refresh_interval": 0},
            },
            {
                "name": "bundletwo",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {"path": "/dev/null", "refresh_interval": 300},
            },
        ]

        bundleone = MagicMock()
        bundleone.name = "bundleone"
        bundleone.path = "/dev/null"
        bundleone.refresh_interval = 0
        bundleone.get_current_version.return_value = None
        bundletwo = MagicMock()
        bundletwo.name = "bundletwo"
        bundletwo.path = "/dev/null"
        bundletwo.refresh_interval = 300
        bundletwo.get_current_version.return_value = None

        with conf_vars({("dag_processor", "dag_bundle_config_list"): json.dumps(config)}):
            DagBundlesManager().sync_bundles_to_db()
            with mock.patch("airflow.dag_processing.manager.DagBundlesManager") as mock_bundle_manager:
                mock_bundle_manager.return_value._bundle_config = {"bundleone": None, "bundletwo": None}
                mock_bundle_manager.return_value.get_all_dag_bundles.return_value = [bundleone, bundletwo]

                # We should refresh bundleone twice, but bundletwo only once - it has a long refresh_interval
                manager = DagFileProcessorManager(max_runs=2)
                manager.run()
                assert bundleone.refresh.call_count == 2
                bundletwo.refresh.assert_called_once()

                # Now, we should refresh both bundles, regardless of the refresh_interval
                # as we are starting up a fresh manager
                bundleone.reset_mock()
                bundletwo.reset_mock()
                manager = DagFileProcessorManager(max_runs=2)
                manager.run()
                assert bundleone.refresh.call_count == 2
                bundletwo.refresh.assert_called_once()

                # however, if the version doesn't match, we should still refresh
                bundletwo.reset_mock()

                def _update_bundletwo_version():
                    # We will update the bundle version in the db, so the next manager loop
                    # will believe another processor had seen a new version
                    with create_session() as session:
                        bundletwo_model = session.get(DagBundleModel, "bundletwo")
                        bundletwo_model.version = "123"

                bundletwo.refresh.side_effect = _update_bundletwo_version
                manager = DagFileProcessorManager(max_runs=2)
                manager.run()
                assert bundletwo.refresh.call_count == 2

    def test_bundle_refresh_check_interval(self):
        """Ensure dag processor doesn't refresh bundles every loop."""
        config = [
            {
                "name": "bundleone",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {"path": "/dev/null", "refresh_interval": 0},
            },
        ]

        bundleone = MagicMock()
        bundleone.name = "bundleone"
        bundleone.path = "/dev/null"
        bundleone.refresh_interval = 0
        bundleone.get_current_version.return_value = None

        with conf_vars(
            {
                ("dag_processor", "dag_bundle_config_list"): json.dumps(config),
                ("dag_processor", "bundle_refresh_check_interval"): "10",
            }
        ):
            DagBundlesManager().sync_bundles_to_db()
            manager = DagFileProcessorManager(max_runs=2)
            manager._dag_bundles = [bundleone]
            manager._refresh_dag_bundles({})
            assert bundleone.refresh.call_count == 1
            manager._refresh_dag_bundles({})
            assert bundleone.refresh.call_count == 1  # didn't fresh the second time

    @pytest.mark.parametrize(
        (
            "elapsed_time_since_refresh",
            "current_version_matches_db",
            "previously_seen",
            "force_refresh",
            "expected",
        ),
        [
            (10, True, True, False, True),
            (400, True, True, False, False),
            (10, False, True, False, False),
            (10, True, False, False, False),
            (10, True, True, True, False),
        ],
    )
    def test_should_skip_bundle_refresh(
        self,
        elapsed_time_since_refresh,
        current_version_matches_db,
        previously_seen,
        force_refresh,
        expected,
    ):
        manager = DagFileProcessorManager(max_runs=1)
        bundle = MagicMock()
        bundle.name = "bundleone"
        bundle.refresh_interval = 300

        if force_refresh:
            manager._force_refresh_bundles = {"bundleone"}

        should_skip_refresh = manager.should_skip_refresh(
            bundle=bundle,
            elapsed_time_since_refresh=elapsed_time_since_refresh,
            current_version_matches_db=current_version_matches_db,
            previously_seen=previously_seen,
        )

        assert should_skip_refresh is expected

    def test_bundle_force_refresh(self):
        """Ensure the dag processor honors force refreshing a bundle."""
        config = [
            {
                "name": "bundleone",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {"path": "/dev/null", "refresh_interval": 0},
            },
        ]

        bundleone = MagicMock()
        bundleone.name = "bundleone"
        bundleone.path = "/dev/null"
        bundleone.refresh_interval = 0
        bundleone.get_current_version.return_value = None

        with conf_vars(
            {
                ("dag_processor", "dag_bundle_config_list"): json.dumps(config),
                ("dag_processor", "bundle_refresh_check_interval"): "10",
            }
        ):
            DagBundlesManager().sync_bundles_to_db()
            manager = DagFileProcessorManager(max_runs=2)
            manager._dag_bundles = [bundleone]
            manager._refresh_dag_bundles({})
            assert bundleone.refresh.call_count == 1
            manager._force_refresh_bundles = {"bundleone"}
            manager._refresh_dag_bundles({})
            assert bundleone.refresh.call_count == 2  # forced refresh

    def test_bundles_versions_are_stored(self, session):
        config = [
            {
                "name": "bundleone",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {"path": "/dev/null", "refresh_interval": 0},
            },
        ]

        mybundle = MagicMock()
        mybundle.name = "bundleone"
        mybundle.path = "/dev/null"
        mybundle.refresh_interval = 0
        mybundle.supports_versioning = True
        mybundle.get_current_version.return_value = "123"

        with conf_vars({("dag_processor", "dag_bundle_config_list"): json.dumps(config)}):
            DagBundlesManager().sync_bundles_to_db()
            with mock.patch("airflow.dag_processing.manager.DagBundlesManager") as mock_bundle_manager:
                mock_bundle_manager.return_value._bundle_config = {"bundleone": None}
                mock_bundle_manager.return_value.get_all_dag_bundles.return_value = [mybundle]
                manager = DagFileProcessorManager(max_runs=1)
                manager.run()

        with create_session() as session:
            model = session.get(DagBundleModel, "bundleone")
            assert model.version == "123"

    def test_non_versioned_bundle_get_version_not_called(self):
        config = [
            {
                "name": "bundleone",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {"path": "/dev/null", "refresh_interval": 0},
            },
        ]

        bundleone = MagicMock()
        bundleone.name = "bundleone"
        bundleone.refresh_interval = 0
        bundleone.supports_versioning = False
        bundleone.path = Path("/dev/null")

        with conf_vars({("dag_processor", "dag_bundle_config_list"): json.dumps(config)}):
            DagBundlesManager().sync_bundles_to_db()
            with mock.patch("airflow.dag_processing.manager.DagBundlesManager") as mock_bundle_manager:
                mock_bundle_manager.return_value._bundle_config = {"bundleone": None}
                mock_bundle_manager.return_value.get_all_dag_bundles.return_value = [bundleone]
                manager = DagFileProcessorManager(max_runs=1)
                manager.run()

        bundleone.refresh.assert_called_once()
        bundleone.get_current_version.assert_not_called()

    def test_versioned_bundle_get_version_called_once(self):
        """Make sure in a normal "warm" loop, get_current_version is called just once after refresha"""
        config = [
            {
                "name": "bundleone",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {"path": "/dev/null", "refresh_interval": 0},
            },
        ]

        bundleone = MagicMock()
        bundleone.name = "bundleone"
        bundleone.refresh_interval = 0
        bundleone.supports_versioning = True
        bundleone.get_current_version.return_value = "123"
        bundleone.path = Path("/dev/null")

        with conf_vars({("dag_processor", "dag_bundle_config_list"): json.dumps(config)}):
            DagBundlesManager().sync_bundles_to_db()
            with mock.patch("airflow.dag_processing.manager.DagBundlesManager") as mock_bundle_manager:
                mock_bundle_manager.return_value._bundle_config = {"bundleone": None}
                mock_bundle_manager.return_value.get_all_dag_bundles.return_value = [bundleone]
                manager = DagFileProcessorManager(max_runs=1)
                manager.run()  # run it once to warm up

                # now run it again so we can check we only call get_current_version once
                bundleone.refresh.reset_mock()
                bundleone.get_current_version.reset_mock()
                manager.run()
                bundleone.refresh.assert_called_once()
                bundleone.get_current_version.assert_called_once()

    @pytest.mark.parametrize(
        ("bundle_names", "expected"),
        [
            (None, {"bundle1", "bundle2", "bundle3"}),
            (["bundle1"], {"bundle1"}),
            (["bundle1", "bundle2"], {"bundle1", "bundle2"}),
        ],
    )
    def test_bundle_names_to_parse(self, bundle_names, expected, configure_dag_bundles):
        config = {f"bundle{i}": os.devnull for i in range(1, 4)}
        with configure_dag_bundles(config):
            manager = DagFileProcessorManager(max_runs=1, bundle_names_to_parse=bundle_names)
            manager._run_parsing_loop = MagicMock()
            manager.run()

        bundle_names_being_parsed = {b.name for b in manager._dag_bundles}
        assert bundle_names_being_parsed == expected

    @conf_vars({("core", "multi_team"): "true"})
    def test_bundles_with_team(self, session):
        team1_name = "test_team1"
        team2_name = "test_team2"

        # Create two teams
        session.add(Team(name=team1_name))
        session.add(Team(name=team2_name))
        session.commit()

        # Associate a dag bundle to a team
        config = [
            {
                "name": "bundle_team",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {},
                "team_name": team1_name,
            },
        ]

        with conf_vars({("dag_processor", "dag_bundle_config_list"): json.dumps(config)}):
            DagBundlesManager().sync_bundles_to_db()

        team = session.scalars(select(Team).where(Team.name == team1_name)).one()
        assert len(team.dag_bundles) == 1
        assert team.dag_bundles[0].name == "bundle_team"

        # Change the team ownership
        config = [
            {
                "name": "bundle_team",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {},
                "team_name": team2_name,
            },
        ]

        with conf_vars({("dag_processor", "dag_bundle_config_list"): json.dumps(config)}):
            DagBundlesManager().sync_bundles_to_db()

        team1 = session.scalars(select(Team).where(Team.name == team1_name)).one()
        assert len(team1.dag_bundles) == 0
        team2 = session.scalars(select(Team).where(Team.name == team2_name)).one()
        assert len(team2.dag_bundles) == 1
        assert team2.dag_bundles[0].name == "bundle_team"

        # Delete the team ownership
        config = [
            {
                "name": "bundle_team",
                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
                "kwargs": {},
            },
        ]

        with conf_vars({("dag_processor", "dag_bundle_config_list"): json.dumps(config)}):
            DagBundlesManager().sync_bundles_to_db()

        team1 = session.scalars(select(Team).where(Team.name == team1_name)).one()
        assert len(team1.dag_bundles) == 0
        team2 = session.scalars(select(Team).where(Team.name == team2_name)).one()
        assert len(team2.dag_bundles) == 0

    @mock.patch.object(DagFileProcessorProcess, "start")
    def test_create_process_passes_bundle_name_to_process_start(
        self, mock_process_start, configure_testing_dag_bundle
    ):
        """Test that DagFileProcessorManager._create_process() passes bundle_name to DagFileProcessorProcess.start()"""
        with configure_testing_dag_bundle("/tmp"):
            manager = DagFileProcessorManager(max_runs=1)
            manager._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())

        # Setup test data
        file_info = DagFileInfo(
            bundle_name="testing", rel_path=Path("test_dag.py"), bundle_path=TEST_DAGS_FOLDER
        )

        # Mock the process creation
        mock_process_start.return_value = self.mock_processor()[0]

        # Call _create_process (only takes one parameter: dag_file)
        manager._create_process(file_info)

        # Verify DagFileProcessorProcess.start was called with correct bundle_name
        mock_process_start.assert_called_once()
        call_kwargs = mock_process_start.call_args.kwargs
        assert call_kwargs["bundle_name"] == "testing"

    @mock.patch("airflow.dag_processing.manager.stats.initialize")
    def test_stats_initialize_called_on_run(self, stats_init_mock, tmp_path, configure_testing_dag_bundle):
        """Test that stats.initialize() is called when DagFileProcessorManager.run() is executed."""
        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=1)
            manager.run()

        # Verify stats.initialize was called with the expected configuration parameters
        stats_init_mock.assert_called_once()
        call_kwargs = stats_init_mock.call_args.kwargs
        assert "factory" in call_kwargs

    def test_run_invokes_before_and_after_hooks(self, tmp_path, configure_testing_dag_bundle):
        """`run()` should call `before_run` then `after_run`, even if the loop raises."""
        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=1)
            calls: list[str] = []
            with (
                mock.patch.object(manager, "before_run", side_effect=lambda: calls.append("before")),
                mock.patch.object(manager, "after_run", side_effect=lambda: calls.append("after")),
                mock.patch.object(
                    manager,
                    "_run_parsing_loop",
                    side_effect=lambda: calls.append("loop"),
                ),
            ):
                manager.run()
            assert calls == ["before", "loop", "after"]

    def test_after_run_runs_when_parsing_loop_raises(self, tmp_path, configure_testing_dag_bundle):
        """`after_run` must execute even when the parsing loop raises."""
        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=1)
            with (
                mock.patch.object(manager, "before_run"),
                mock.patch.object(manager, "after_run") as after_run_mock,
                mock.patch.object(manager, "_run_parsing_loop", side_effect=RuntimeError("boom")),
                pytest.raises(RuntimeError, match="boom"),
            ):
                manager.run()
            after_run_mock.assert_called_once_with()

    def test_prepare_server_process_context_can_be_skipped(self, tmp_path, configure_testing_dag_bundle):
        """API-backed subclasses can skip server-context setup without losing selector/stats init."""
        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=1)
            with mock.patch.object(manager, "prepare_server_process_context") as server_ctx_mock:
                manager.run()
            server_ctx_mock.assert_called_once_with()
            assert manager.selector is not None

    def test_prepare_bundles_can_be_overridden_without_sync(self, tmp_path, configure_testing_dag_bundle):
        """Subclasses can override `prepare_bundles` to skip `sync_bundles` (AIP-92 seam)."""
        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=1)
            with (
                mock.patch.object(manager, "sync_bundles") as sync_mock,
                mock.patch.object(manager, "prepare_bundles", side_effect=manager.load_dag_bundles),
            ):
                manager.run()
            sync_mock.assert_not_called()
            assert [b.name for b in manager._dag_bundles] == ["testing"]

    def test_purge_inactive_dag_warnings_delegates_to_dagwarning(self):
        """Default `purge_inactive_dag_warnings` calls `DagWarning.purge_inactive_dag_warnings`."""
        manager = DagFileProcessorManager(max_runs=1)
        with mock.patch(
            "airflow.dag_processing.manager.DagWarning.purge_inactive_dag_warnings"
        ) as purge_mock:
            manager.purge_inactive_dag_warnings()
        purge_mock.assert_called_once_with()

    def test_run_parsing_loop_uses_overridable_purge(self, tmp_path, configure_testing_dag_bundle):
        """`_run_parsing_loop` calls the overridable `purge_inactive_dag_warnings` seam."""
        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=1)
            with (
                mock.patch.object(manager, "purge_inactive_dag_warnings") as purge_mock,
                mock.patch(
                    "airflow.dag_processing.manager.DagWarning.purge_inactive_dag_warnings"
                ) as direct_mock,
            ):
                manager.run()
            purge_mock.assert_called()
            direct_mock.assert_not_called()

    @mock.patch("airflow.dag_processing.manager.stats.gauge")
    def test_stats_total_parse_time(self, statsd_gauge_mock, tmp_path, configure_testing_dag_bundle):
        key = "dag_processing.total_parse_time"
        gauge_values = defaultdict(list)
        statsd_gauge_mock.side_effect = lambda name, value: gauge_values[name].append(value)

        dag_path = tmp_path / "temp_dag.py"
        dag_code = textwrap.dedent(
            """
            from airflow import DAG
            dag = DAG(dag_id='temp_dag')
            """
        )
        dag_path.write_text(dag_code)

        with configure_testing_dag_bundle(tmp_path):
            manager = DagFileProcessorManager(max_runs=0)

            for _ in range(3):
                manager.max_runs += 1
                manager.run()

                assert key in gauge_values
                assert len(gauge_values[key]) == 1
                assert gauge_values[key][0] >= 1e-4

                dag_path.touch()  # make the loop run faster
                gauge_values.clear()

    # --- get_bundle_state / update_bundle_state ---

    def test_get_bundle_state_returns_none_for_missing_bundle(self):
        manager = DagFileProcessorManager(max_runs=1)
        assert manager.get_bundle_state("nonexistent_bundle") is None

    def test_get_bundle_state_returns_correct_state(self, session):
        bundle_name = "test_state_bundle"
        refreshed_at = timezone.datetime(2024, 1, 15, 12, 0, 0)
        model = DagBundleModel(name=bundle_name, version="v1")
        model.last_refreshed = refreshed_at
        session.add(model)
        session.commit()

        manager = DagFileProcessorManager(max_runs=1)
        state = manager.get_bundle_state(bundle_name)

        assert state == BundleState(last_refreshed=refreshed_at, version="v1")

    def test_get_bundle_state_null_fields(self, session):
        bundle_name = "test_null_state_bundle"
        session.add(DagBundleModel(name=bundle_name))
        session.commit()

        manager = DagFileProcessorManager(max_runs=1)
        state = manager.get_bundle_state(bundle_name)

        assert state == BundleState(last_refreshed=None, version=None)

    def test_update_bundle_state_sets_last_refreshed(self, session):
        bundle_name = "test_update_bundle"
        session.add(DagBundleModel(name=bundle_name))
        session.commit()

        refreshed_at = timezone.datetime(2024, 6, 1, 8, 0, 0)
        manager = DagFileProcessorManager(max_runs=1)
        manager.update_bundle_state(bundle_name, last_refreshed=refreshed_at, version=None)

        session.expire_all()
        model = session.get(DagBundleModel, bundle_name)
        assert model.last_refreshed == refreshed_at
        assert model.version is None

    def test_update_bundle_state_sets_version(self, session):
        bundle_name = "test_update_version_bundle"
        session.add(DagBundleModel(name=bundle_name))
        session.commit()

        refreshed_at = timezone.datetime(2024, 6, 1, 8, 0, 0)
        manager = DagFileProcessorManager(max_runs=1)
        manager.update_bundle_state(bundle_name, last_refreshed=refreshed_at, version="abc123")

        session.expire_all()
        model = session.get(DagBundleModel, bundle_name)
        assert model.last_refreshed == refreshed_at
        assert model.version == "abc123"

    def test_update_bundle_state_does_not_overwrite_version_when_none(self, session):
        bundle_name = "test_preserve_version_bundle"
        session.add(DagBundleModel(name=bundle_name, version="keep_me"))
        session.commit()

        refreshed_at = timezone.datetime(2024, 6, 1, 8, 0, 0)
        manager = DagFileProcessorManager(max_runs=1)
        manager.update_bundle_state(bundle_name, last_refreshed=refreshed_at, version=None)

        session.expire_all()
        model = session.get(DagBundleModel, bundle_name)
        assert model.last_refreshed == refreshed_at
        assert model.version == "keep_me"

    def _make_refresh_bundle(self, *, supports_versioning=False, current_version=None):
        bundle = MagicMock(spec=BaseDagBundle)
        bundle.name = "mock_bundle"
        bundle.refresh_interval = 0
        bundle.supports_versioning = supports_versioning
        bundle.is_initialized = True
        bundle.path = Path("/dev/null")
        bundle.get_current_version.return_value = current_version
        return bundle

    def _refresh_with_mocked_state(self, manager, bundle, initial_state):
        """Run _refresh_dag_bundles with get/update_bundle_state mocked out.

        Returns the two MagicMock objects for post-call assertions. MagicMock retains its
        call records after the ``with`` block exits (un-patching only restores the original
        attribute; it does not clear the mock's recorded calls), so callers can assert on
        them normally after this method returns.
        """
        manager._dag_bundles = [bundle]
        manager._force_refresh_bundles = set()
        mock_get = mock.patch.object(manager, "get_bundle_state", return_value=initial_state)
        mock_update = mock.patch.object(manager, "update_bundle_state")
        with (
            mock_get as patched_get,
            mock_update as patched_update,
            mock.patch.object(manager, "_find_files_in_bundle", return_value=[]),
            mock.patch.object(manager, "deactivate_deleted_dags"),
            mock.patch.object(manager, "clear_orphaned_import_errors"),
            mock.patch.object(manager, "handle_removed_files"),
            mock.patch.object(manager, "_resort_file_queue"),
            mock.patch.object(manager, "_add_new_files_to_queue"),
        ):
            manager._refresh_dag_bundles({})
        return patched_get, patched_update

    def test_refresh_dag_bundles_non_versioned_calls_update_bundle_state(self):
        """Non-versioned bundle: update_bundle_state called with version=None."""
        manager = DagFileProcessorManager(max_runs=1)
        bundle = self._make_refresh_bundle(supports_versioning=False)

        mock_get, mock_update = self._refresh_with_mocked_state(
            manager, bundle, BundleState(last_refreshed=None, version=None)
        )

        mock_get.assert_called_once_with("mock_bundle")
        mock_update.assert_called_once_with("mock_bundle", last_refreshed=mock.ANY, version=None)
        assert manager._bundle_versions["mock_bundle"] is None

    def test_refresh_dag_bundles_versioned_version_changed_calls_update_bundle_state(self):
        """Versioned bundle with new version: update_bundle_state called with the new version."""
        manager = DagFileProcessorManager(max_runs=1)
        bundle = self._make_refresh_bundle(supports_versioning=True, current_version="v2")
        # Pre-populate _bundle_versions so previously_seen=True and current DB version differs
        manager._bundle_versions["mock_bundle"] = "v1"

        mock_get, mock_update = self._refresh_with_mocked_state(
            manager, bundle, BundleState(last_refreshed=None, version="v1")
        )

        mock_get.assert_called_once_with("mock_bundle")
        mock_update.assert_called_once_with("mock_bundle", last_refreshed=mock.ANY, version="v2")
        assert manager._bundle_versions["mock_bundle"] == "v2"

    def test_refresh_dag_bundles_versioned_version_unchanged_calls_update_bundle_state(self):
        """Versioned bundle with unchanged version: update_bundle_state called with version=None."""
        manager = DagFileProcessorManager(max_runs=1)
        bundle = self._make_refresh_bundle(supports_versioning=True, current_version="v1")
        # Pre-populate _bundle_versions so previously_seen=True and version matches
        manager._bundle_versions["mock_bundle"] = "v1"

        mock_get, mock_update = self._refresh_with_mocked_state(
            manager, bundle, BundleState(last_refreshed=None, version="v1")
        )

        mock_get.assert_called_once_with("mock_bundle")
        # version=None because version did not change — last_refreshed still updated
        mock_update.assert_called_once_with("mock_bundle", last_refreshed=mock.ANY, version=None)
        # _bundle_versions NOT updated for unchanged-version early-continue path
        assert manager._bundle_versions["mock_bundle"] == "v1"

    def test_refresh_dag_bundles_versioned_version_unchanged_persist_failure(self):
        """Short-circuit path: if update_bundle_state raises, the bundle is skipped without
        populating known_files (version didn't change, so no file scanning needed)."""
        manager = DagFileProcessorManager(max_runs=1)
        bundle = self._make_refresh_bundle(supports_versioning=True, current_version="v1")
        manager._bundle_versions["mock_bundle"] = "v1"
        manager._dag_bundles = [bundle]
        manager._force_refresh_bundles = set()

        known_files: dict[str, set[DagFileInfo]] = {}
        with (
            mock.patch.object(
                manager, "get_bundle_state", return_value=BundleState(last_refreshed=None, version="v1")
            ),
            mock.patch.object(manager, "update_bundle_state", side_effect=Exception("DB error")),
            mock.patch.object(manager, "_find_files_in_bundle", return_value=[]) as mock_find,
            mock.patch.object(manager, "deactivate_deleted_dags"),
            mock.patch.object(manager, "clear_orphaned_import_errors"),
            mock.patch.object(manager, "handle_removed_files"),
            mock.patch.object(manager, "_resort_file_queue"),
            mock.patch.object(manager, "_add_new_files_to_queue"),
        ):
            manager._refresh_dag_bundles(known_files)

        bundle.refresh.assert_called_once()
        # Short-circuit continues to next bundle — no file scanning
        mock_find.assert_not_called()
        assert "mock_bundle" not in known_files
        # _bundle_versions unchanged
        assert manager._bundle_versions["mock_bundle"] == "v1"

    def test_refresh_dag_bundles_versioned_first_seen_skips_short_circuit(self):
        """Versioned bundle seen for the first time: short-circuit is skipped even if versions match.

        previously_seen=False means ``previously_seen and ...`` is False, so the bundle always
        goes through the full update path on first encounter regardless of version equality.
        """
        manager = DagFileProcessorManager(max_runs=1)
        # current_version matches what's already in the DB state
        bundle = self._make_refresh_bundle(supports_versioning=True, current_version="v1")
        # _bundle_versions is empty → previously_seen=False

        mock_get, mock_update = self._refresh_with_mocked_state(
            manager, bundle, BundleState(last_refreshed=None, version="v1")
        )

        mock_get.assert_called_once_with("mock_bundle")
        # full update called with the actual version, not short-circuited to version=None
        mock_update.assert_called_once_with("mock_bundle", last_refreshed=mock.ANY, version="v1")
        assert manager._bundle_versions["mock_bundle"] == "v1"

    def test_refresh_dag_bundles_get_bundle_state_failure_skips_bundle(self):
        """A failure in get_bundle_state() logs and skips the bundle without aborting the loop."""
        manager = DagFileProcessorManager(max_runs=1)
        bundle = self._make_refresh_bundle()
        manager._dag_bundles = [bundle]

        with mock.patch.object(manager, "get_bundle_state", side_effect=Exception("API error")):
            manager._refresh_dag_bundles({})

        bundle.refresh.assert_not_called()

    def test_refresh_dag_bundles_update_bundle_state_failure_still_scans_files(self):
        """A failure in update_bundle_state() logs but does not skip file scanning.

        The bundle was already refreshed, so known_files must still be populated to prevent
        the end-of-method cleanup from treating the bundle's files as removed.
        """
        manager = DagFileProcessorManager(max_runs=1)
        bundle = self._make_refresh_bundle()
        manager._dag_bundles = [bundle]

        known_files: dict[str, set[DagFileInfo]] = {}
        with (
            mock.patch.object(
                manager, "get_bundle_state", return_value=BundleState(last_refreshed=None, version=None)
            ),
            mock.patch.object(manager, "update_bundle_state", side_effect=Exception("API error")),
            mock.patch.object(manager, "_find_files_in_bundle", return_value=[]),
            mock.patch.object(manager, "deactivate_deleted_dags"),
            mock.patch.object(manager, "clear_orphaned_import_errors"),
            mock.patch.object(manager, "handle_removed_files"),
            mock.patch.object(manager, "_resort_file_queue"),
            mock.patch.object(manager, "_add_new_files_to_queue"),
        ):
            manager._refresh_dag_bundles(known_files)

        bundle.refresh.assert_called_once()
        # known_files must be populated so cleanup doesn't purge this bundle's files
        assert "mock_bundle" in known_files
        # _bundle_versions must NOT advance — DB still holds the old version, so the next
        # iteration will see a version mismatch and re-refresh rather than skip incorrectly
        assert "mock_bundle" not in manager._bundle_versions
