def __init__(self, config=None):
"""
Setup necessary objects for negotiating with dynamo
:param config: Optional config param most useful for testing
"""
if config is None:
self.dynamodb = initialise_dynamo_connection()
else:
self.dynamodb = initialise_dynamo_connection(config)
table_name = self._get_table_name()
self.orders_table = self.dynamodb.Table(table_name)
def __init__(self):
"""
Setup necessary objects for negotiating with dynamo
:param config: Optional config param most useful for testing
"""
if self.config is None:
self.dynamodb = utils.initialise_dynamo_connection()
else:
self.dynamodb = utils.initialise_dynamo_connection(self.config)
table_name = self._get_table_name()
self.customer_table = self.dynamodb.Table(table_name)
def create_orders_table(table_name, logger, dynamo_config):
"""
Creates a table in Dynamo in the format map_store.environment.orders
:param table_name: Table we want to create
:param logger: Logger object
:param dynamo_config: Dynamo Config for connection
"""
dynamodb = initialise_dynamo_connection(dynamo_config)
orders_table = dynamodb.Table(table_name)
# Don't create table if it already exists
try:
status = orders_table.table_status
logger.debug('Table {0} exists, status is {1}'.format(table_name, status))
return
except ClientError:
# Swallow this exception as it demonstrates table doesn't exist
pass
logger.info('Creating table {0}'.format(table_name))
table = dynamodb.create_table(
TableName=table_name,
KeySchema=[
{
'AttributeName': 'customerEmailAddress',
'KeyType': 'HASH' # Partition key
},
{
'AttributeName': 'orderId',
'KeyType': 'RANGE' # Sort Key
},
],
AttributeDefinitions=[
{
'AttributeName': 'customerEmailAddress',
'AttributeType': 'S' # String
},
{
'AttributeName': 'orderId',
'AttributeType': 'S' # String
},
],
ProvisionedThroughput={
'ReadCapacityUnits': 1,
'WriteCapacityUnits': 1
}
)
logger.info('Table {0} created'.format(table_name))
def test_init_connections_success(self):
dynamo = utils.initialise_dynamo_connection(DYNAMODB_CONFIG)
def test_init_connections_raises_error_if_os_vars_not_found(self):
with self.assertRaises(RuntimeError):
utils.initialise_dynamo_connection(DYNAMODB_CONFIG)