Source code for airflow.providers.apache.cassandra.example_dags.example_cassandra_dag
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# 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
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
"""
Example Airflow DAG to check if a Cassandra Table and a Records exists
or not using `CassandraTableSensor` and `CassandraRecordSensor`.
"""
from airflow.models import DAG
from airflow.providers.apache.cassandra.sensors.record import CassandraRecordSensor
from airflow.providers.apache.cassandra.sensors.table import CassandraTableSensor
from airflow.utils.dates import days_ago
args = {
'owner': 'Airflow',
}
with DAG(
dag_id='example_cassandra_operator',
default_args=args,
schedule_interval=None,
start_date=days_ago(2),
tags=['example'],
) as dag:
# [START howto_operator_cassandra_table_sensor]
table_sensor = CassandraTableSensor(
task_id="cassandra_table_sensor",
cassandra_conn_id="cassandra_default",
table="keyspace_name.table_name",
)
# [END howto_operator_cassandra_table_sensor]
# [START howto_operator_cassandra_record_sensor]
record_sensor = CassandraRecordSensor(
task_id="cassandra_record_sensor",
cassandra_conn_id="cassandra_default",
table="keyspace_name.table_name",
keys={"p1": "v1", "p2": "v2"},
)
# [END howto_operator_cassandra_record_sensor]