def setUp(self):
args = {'owner': 'airflow', 'start_date': DEFAULT_DATE}
dag = DAG('test_dag_id', default_args=args)
self.dag = dag
self.sql = 'SELECT 1'
self.hook = AwsDynamoDBHook(
aws_conn_id='aws_default', region_name='us-east-1')
def execute(self, context):
self.log.info("Going to start S3 to Dynamo operator")
dynamo_hook = AwsDynamoDBHook(
aws_conn_id=self.dynamodb_conn_id,
table_keys=self.table_keys,
table_name=self.table_name,
region_name=self.region_name,
)
s3_hook = S3Hook(self.s3_conn_id)
self.log.info("Downloading s3 file")
source_obj = s3_hook.get_key(self.s3_key, self.s3_bucket)
with NamedTemporaryFile() as source_file:
with open(source_file.name, "wb") as opened_source_file:
source_obj.download_fileobj(opened_source_file)
self.log.info("Writing file to Dynamo")
with open(source_file.name, "r") as opened_source_file:
reader = opened_source_file.readlines()
json_data = [
self.clean_empty(json.loads(x, parse_float=Decimal))
for x in reader
]
dynamo_hook.write_batch_data(json_data)
self.log.info("Finished S3 to Dynamo operator")
return True
def execute(self, context):
table = AwsDynamoDBHook().get_conn().Table(self.dynamodb_table_name)
scan_kwargs = copy(self.dynamodb_scan_kwargs) if self.dynamodb_scan_kwargs else {}
err = None
f = NamedTemporaryFile()
try:
f = self._scan_dynamodb_and_upload_to_s3(f, scan_kwargs, table)
except Exception as e:
err = e
raise e
finally:
if err is None:
_upload_file_to_s3(f, self.s3_bucket_name, self.s3_key_prefix)
f.close()
def persist_data(**kwargs):
hook = AwsDynamoDBHook(
table_name="TABLE_NAME", #TABLE_NAME
aws_conn_id='aws_default')
faceIndexDetails = kwargs['ti'].xcom_pull(key='FaceIndexDetails')
thumbnailDetails = kwargs['ti'].xcom_pull(key='ThumbnailDetails')
conf = kwargs['dag_run'].conf
dynamoItem = {
"UserId": conf["userId"],
"s3Bucket": conf["s3Bucket"],
"s3Key": conf["s3Key"],
"faceId": faceIndexDetails['FaceId'],
"thumbnail": thumbnailDetails['thumbnail']
}
items = [dynamoItem]
hook.write_batch_data(items)
def execute(self, context):
self.log.info("Going to start Xcom DynamoDB Key Operator")
dynamo_hook = AwsDynamoDBHook(
aws_conn_id=self.dynamodb_conn_id,
table_keys=self.table_keys,
table_name=self.table_name,
region_name=self.region_name,
)
condition = Key(self.partition_key_condition[0]).eq(
self.partition_key_condition[1])
if self.sort_key_condition:
condition = condition & self.sort_key_condition
conn = dynamo_hook.get_conn()
table = conn.Table(self.table_name)
response = table.query(KeyConditionExpression=condition)
if response["Items"]:
self.log.info("Got response, validating")
return [x[self.return_key] for x in response["Items"]]
else:
self.log.info("Responde didn't return results")
return False
def test_insert_batch_items_dynamodb_table(self):
hook = AwsDynamoDBHook(aws_conn_id='aws_default',
table_name='test_airflow',
table_keys=['id'],
region_name='us-east-1')
# this table needs to be created in production
table = hook.get_conn().create_table(TableName='test_airflow',
KeySchema=[
{
'AttributeName': 'id',
'KeyType': 'HASH'
},
],
AttributeDefinitions=[{
'AttributeName':
'name',
'AttributeType':
'S'
}],
ProvisionedThroughput={
'ReadCapacityUnits': 10,
'WriteCapacityUnits': 10
})
table = hook.get_conn().Table('test_airflow')
items = [{
'id': str(uuid.uuid4()),
'name': 'airflow'
} for _ in range(10)]
hook.write_batch_data(items)
table.meta.client.get_waiter('table_exists').wait(
TableName='test_airflow')
self.assertEqual(table.item_count, 10)
def execute(self, context):
s3 = S3Hook(aws_conn_id=self.aws_conn_id)
dynamodb = AwsDynamoDBHook(aws_conn_id=self.aws_conn_id,
table_name=self.table_name,
table_keys=self.table_keys,
region_name=self.region_name)
if not s3.check_for_key(self.s3_key):
raise AirflowException("The source key {0} does not exist".format(
self.s3_key))
s3_key_object = s3.get_key(self.s3_key)
s3_key_json = json.loads(
s3_key_object.get()['Body'].read().decode('utf-8'))
json_list = s3_key_json[self.json_key]
json_list = self._convert_float_to_decimal(json_list)
logging.info('Inserting rows into dynamodb table %s', self.table_name)
dynamodb.write_batch_data(json_list)
logging.info('Finished inserting %d rows into dynamodb table %s',
len(json_list), self.table_name)
def execute(self, context):
hive = HiveServer2Hook(hiveserver2_conn_id=self.hiveserver2_conn_id)
self.log.info('Extracting data from Hive')
self.log.info(self.sql)
data = hive.get_pandas_df(self.sql, schema=self.schema)
dynamodb = AwsDynamoDBHook(aws_conn_id=self.aws_conn_id,
table_name=self.table_name,
table_keys=self.table_keys,
region_name=self.region_name)
self.log.info('Inserting rows into dynamodb')
if self.pre_process is None:
dynamodb.write_batch_data(
json.loads(data.to_json(orient='records')))
else:
dynamodb.write_batch_data(
self.pre_process(data=data,
args=self.pre_process_args,
kwargs=self.pre_process_kwargs))
self.log.info('Done.')
def test_get_conn_returns_a_boto3_connection(self):
hook = AwsDynamoDBHook(aws_conn_id='aws_default')
self.assertIsNotNone(hook.get_conn())