Source code for airflow.sensors.web_hdfs_sensor

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from airflow.sensors.base_sensor_operator import BaseSensorOperator
from airflow.utils.decorators import apply_defaults

[docs]class WebHdfsSensor(BaseSensorOperator): """ Waits for a file or folder to land in HDFS """
[docs] template_fields = ('filepath',)
@apply_defaults def __init__(self, filepath, webhdfs_conn_id='webhdfs_default', *args, **kwargs): super(WebHdfsSensor, self).__init__(*args, **kwargs) self.filepath = filepath self.webhdfs_conn_id = webhdfs_conn_id
[docs] def poke(self, context): from airflow.hooks.webhdfs_hook import WebHDFSHook c = WebHDFSHook(self.webhdfs_conn_id)'Poking for file %s', self.filepath) return c.check_for_path(hdfs_path=self.filepath)

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