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202 | def reactivate_ssh(
*,
task_group_activity_id: int,
task_group_id: int,
fractal_ssh: FractalSSH,
tasks_base_dir: str,
) -> None:
"""
Reactivate a task group venv.
This function is run as a background task, therefore exceptions must be
handled.
Arguments:
task_group_id:
task_group_activity_id:
fractal_ssh:
tasks_base_dir:
Only used as a `safe_root` in `remove_dir`, and typically set to
`user_settings.ssh_tasks_dir`.
"""
with TemporaryDirectory() as tmpdir:
log_file_path = get_log_path(Path(tmpdir))
logger = set_logger(
logger_name=LOGGER_NAME,
log_file_path=log_file_path,
)
with next(get_sync_db()) as db:
# Get main objects from db
activity = db.get(TaskGroupActivityV2, task_group_activity_id)
task_group = db.get(TaskGroupV2, task_group_id)
if activity is None or task_group is None:
# Use `logging` directly
logging.error(
"Cannot find database rows with "
f"{task_group_id=} and {task_group_activity_id=}:\n"
f"{task_group=}\n{activity=}. Exit."
)
return
# Log some info
logger.debug("START")
for key, value in task_group.model_dump().items():
logger.debug(f"task_group.{key}: {value}")
# Check that SSH connection works
try:
fractal_ssh.check_connection()
except Exception as e:
logger.error("Cannot establish SSH connection.")
fail_and_cleanup(
task_group=task_group,
task_group_activity=activity,
logger_name=LOGGER_NAME,
log_file_path=log_file_path,
exception=e,
db=db,
)
return
# Check that the (remote) task_group venv_path does not exist
if fractal_ssh.remote_exists(task_group.venv_path):
error_msg = f"{task_group.venv_path} already exists."
logger.error(error_msg)
fail_and_cleanup(
task_group=task_group,
task_group_activity=activity,
logger_name=LOGGER_NAME,
log_file_path=log_file_path,
exception=FileExistsError(error_msg),
db=db,
)
return
try:
activity.status = TaskGroupActivityStatusV2.ONGOING
activity = add_commit_refresh(obj=activity, db=db)
# Prepare replacements for templates
replacements = get_collection_replacements(
task_group=task_group,
python_bin=get_python_interpreter_v2(
python_version=task_group.python_version
),
)
# Prepare replacements for templates
pip_freeze_file_local = f"{tmpdir}/pip_freeze.txt"
pip_freeze_file_remote = (
Path(task_group.path) / "_tmp_pip_freeze.txt"
).as_posix()
with open(pip_freeze_file_local, "w") as f:
f.write(task_group.pip_freeze)
fractal_ssh.send_file(
local=pip_freeze_file_local, remote=pip_freeze_file_remote
)
replacements.append(
("__PIP_FREEZE_FILE__", pip_freeze_file_remote)
)
# Define script_dir_remote and create it if missing
script_dir_remote = (
Path(task_group.path) / SCRIPTS_SUBFOLDER
).as_posix()
fractal_ssh.mkdir(folder=script_dir_remote, parents=True)
# Prepare common arguments for `_customize_and_run_template`
common_args = dict(
replacements=replacements,
script_dir_local=(
Path(tmpdir) / SCRIPTS_SUBFOLDER
).as_posix(),
script_dir_remote=script_dir_remote,
prefix=(
f"{int(time.time())}_"
f"{TaskGroupActivityActionV2.REACTIVATE}"
),
fractal_ssh=fractal_ssh,
logger_name=LOGGER_NAME,
)
# Create remote directory for scripts
fractal_ssh.mkdir(folder=script_dir_remote)
logger.debug("start - create venv")
_customize_and_run_template(
template_filename="1_create_venv.sh",
**common_args,
)
logger.debug("end - create venv")
activity.log = get_current_log(log_file_path)
activity.timestamp_ended = get_timestamp()
activity = add_commit_refresh(obj=activity, db=db)
logger.debug("start - install from pip freeze")
_customize_and_run_template(
template_filename="6_pip_install_from_freeze.sh",
**common_args,
)
logger.debug("end - install from pip freeze")
activity.log = get_current_log(log_file_path)
activity.status = TaskGroupActivityStatusV2.OK
activity.timestamp_ended = get_timestamp()
activity = add_commit_refresh(obj=activity, db=db)
task_group.active = True
task_group = add_commit_refresh(obj=task_group, db=db)
logger.debug("END")
except Exception as reactivate_e:
# Delete corrupted venv_path
try:
logger.info(f"Now delete folder {task_group.venv_path}")
fractal_ssh.remove_folder(
folder=task_group.venv_path,
safe_root=tasks_base_dir,
)
logger.info(f"Deleted folder {task_group.venv_path}")
except Exception as rm_e:
logger.error(
"Removing folder failed.\n"
f"Original error:\n{str(rm_e)}"
)
fail_and_cleanup(
task_group=task_group,
task_group_activity=activity,
logger_name=LOGGER_NAME,
log_file_path=log_file_path,
exception=reactivate_e,
db=db,
)
return
|