Source code for airflow.sensors.filesystem

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from __future__ import annotations

import datetime
import os
from glob import glob
from typing import Sequence

from airflow.hooks.filesystem import FSHook
from airflow.sensors.base import BaseSensorOperator
from airflow.utils.context import Context


[docs]class FileSensor(BaseSensorOperator): """ Waits for a file or folder to land in a filesystem. If the path given is a directory then this sensor will only return true if any files exist inside it (either directly, or within a subdirectory) :param fs_conn_id: reference to the File (path) connection id :param filepath: File or folder name (relative to the base path set within the connection), can be a glob. :param recursive: when set to ``True``, enables recursive directory matching behavior of ``**`` in glob filepath parameter. Defaults to ``False``. """
[docs] template_fields: Sequence[str] = ('filepath',)
[docs] ui_color = '#91818a'
def __init__(self, *, filepath, fs_conn_id='fs_default', recursive=False, **kwargs): super().__init__(**kwargs) self.filepath = filepath self.fs_conn_id = fs_conn_id self.recursive = recursive
[docs] def poke(self, context: Context): hook = FSHook(self.fs_conn_id) basepath = hook.get_path() full_path = os.path.join(basepath, self.filepath) self.log.info('Poking for file %s', full_path) for path in glob(full_path, recursive=self.recursive): if os.path.isfile(path): mod_time = datetime.datetime.fromtimestamp(os.path.getmtime(path)).strftime('%Y%m%d%H%M%S') self.log.info('Found File %s last modified: %s', str(path), mod_time) return True for _, _, files in os.walk(path): if len(files) > 0: return True return False

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