Source code for airflow.contrib.hooks.aws_dynamodb_hook

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"""
This module contains the AWS DynamoDB hook
"""
from airflow.exceptions import AirflowException
from airflow.contrib.hooks.aws_hook import AwsHook


[docs]class AwsDynamoDBHook(AwsHook): """ Interact with AWS DynamoDB. :param table_keys: partition key and sort key :type table_keys: list :param table_name: target DynamoDB table :type table_name: str :param region_name: aws region name (example: us-east-1) :type region_name: str """ def __init__(self, table_keys=None, table_name=None, region_name=None, *args, **kwargs): self.table_keys = table_keys self.table_name = table_name self.region_name = region_name self.conn = None super(AwsDynamoDBHook, self).__init__(*args, **kwargs)
[docs] def get_conn(self): self.conn = self.get_resource_type('dynamodb', self.region_name) return self.conn
[docs] def write_batch_data(self, items): """ Write batch items to DynamoDB table with provisioned throughout capacity. """ dynamodb_conn = self.get_conn() try: table = dynamodb_conn.Table(self.table_name) with table.batch_writer(overwrite_by_pkeys=self.table_keys) as batch: for item in items: batch.put_item(Item=item) return True except Exception as general_error: raise AirflowException( 'Failed to insert items in dynamodb, error: {error}'.format( error=str(general_error)
) )