Source code for airflow.contrib.sensors.wasb_sensor

# -*- coding: utf-8 -*-
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# http://www.apache.org/licenses/LICENSE-2.0
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from airflow.contrib.hooks.wasb_hook import WasbHook
from airflow.operators.sensors import BaseSensorOperator
from airflow.utils.decorators import apply_defaults


[docs]class WasbBlobSensor(BaseSensorOperator): """ Waits for a blob to arrive on Azure Blob Storage. :param container_name: Name of the container. :type container_name: str :param blob_name: Name of the blob. :type blob_name: str :param wasb_conn_id: Reference to the wasb connection. :type wasb_conn_id: str :param check_options: Optional keyword arguments that `WasbHook.check_for_blob()` takes. :type check_options: dict """ template_fields = ('container_name', 'blob_name') @apply_defaults def __init__(self, container_name, blob_name, wasb_conn_id='wasb_default', check_options=None, *args, **kwargs): super(WasbBlobSensor, self).__init__(*args, **kwargs) if check_options is None: check_options = {} self.wasb_conn_id = wasb_conn_id self.container_name = container_name self.blob_name = blob_name self.check_options = check_options def poke(self, context): self.log.info( 'Poking for blob: {self.blob_name}\n' 'in wasb://{self.container_name}'.format(**locals()) ) hook = WasbHook(wasb_conn_id=self.wasb_conn_id) return hook.check_for_blob(self.container_name, self.blob_name, **self.check_options)
[docs]class WasbPrefixSensor(BaseSensorOperator): """ Waits for blobs matching a prefix to arrive on Azure Blob Storage. :param container_name: Name of the container. :type container_name: str :param prefix: Prefix of the blob. :type prefix: str :param wasb_conn_id: Reference to the wasb connection. :type wasb_conn_id: str :param check_options: Optional keyword arguments that `WasbHook.check_for_prefix()` takes. :type check_options: dict """ template_fields = ('container_name', 'prefix') @apply_defaults def __init__(self, container_name, prefix, wasb_conn_id='wasb_default', check_options=None, *args, **kwargs): super(WasbPrefixSensor, self).__init__(*args, **kwargs) if check_options is None: check_options = {} self.wasb_conn_id = wasb_conn_id self.container_name = container_name self.prefix = prefix self.check_options = check_options def poke(self, context): self.log.info( 'Poking for prefix: {self.prefix}\n' 'in wasb://{self.container_name}'.format(**locals()) ) hook = WasbHook(wasb_conn_id=self.wasb_conn_id) return hook.check_for_prefix(self.container_name, self.prefix, **self.check_options)