def delete_glue_database(database_name):
try:
glue_client.delete_database(Name=database_name)
ul.log(
info=f'Glue database {database_name} has been successfully deleted'
)
except Exception as exc:
ul.log(error=exc)
def create_glue_database(database_definition):
try:
glue_client.create_database(DatabaseInput=database_definition)
ul.log(
info=
f'Glue database {database_definition["Name"]} has been successfully created'
)
except Exception as exc:
ul.log(error=exc)
def create_glue_table(database_name, table_definition):
try:
glue_client.create_table(DatabaseName=database_name,
TableInput=table_definition)
ul.log(
info=
f'Glue table {table_definition["Name"]} has been successfully created'
)
except Exception as exc:
ul.log(error=exc)
def create_error_vault_database_table_from_vault_database_table(
vault_bucket, vault_database_name, vault_table_name):
error_vault_database_name = get_error_vault_database_name(
vault_database_name)
error_vault_table_name = get_error_table_name(vault_table_name)
try:
if get_glue_database_definition(error_vault_database_name) is None:
create_error_vault_database_from_vault_database(
vault_database_name)
response = get_glue_table_definition(vault_database_name,
vault_table_name)
response['Table']['Name'] = error_vault_table_name
response['Table']['StorageDescriptor'][
'Location'] = get_error_table_s3_uri(vault_bucket,
vault_table_name)
columns = [{
'Name': 'error_load_ts',
'Type': 'timestamp',
'Comment': 'loading timestamp of error rows'
}, {
'Name': 'error_column',
'Type': 'string',
'Comment': 'column name which has error value '
}, {
'Name': 'error_value',
'Type': 'string',
'Comment': 'error value '
}, {
'Name': 'error_description',
'Type': 'string',
'Comment': 'error description for rejected rows'
}, {
'Name': 'stage_path',
'Type': 'string',
'Comment': 'data source'
}]
for column in columns:
response['Table']['StorageDescriptor']['Columns'].append(column)
keys_to_remove = [
'DatabaseName', 'CreateTime', 'UpdateTime', 'CreatedBy',
'IsRegisteredWithLakeFormation', 'CatalogId'
]
for key in keys_to_remove:
del response['Table'][key]
# print('new_table_definition: ', response['Table'])
create_glue_table(error_vault_database_name, response['Table'])
except Exception as exc:
ul.log(error=exc)
def get_s3_event_bucket_and_key(event):
""" get_event_bucket_and_path
return a tuple with bucket and key from the event
"""
ul.log(event=event)
if event['Records'][0]['EventSource'] == 'aws:sns':
event = json.loads(event['Records'][0]['Sns']['Message'])
ul.log(event=event)
result = jmespath.search(
'Records[*].s3.{ Bucket : bucket.name, Key : object.key }|[0]', event)
# ul.log(result=result)
return (result["Bucket"], result['Key'])
def send_msg_list_to_sqs(queue_url, msg_list):
""" send_msg_list_to_sqs
sends a list of messages to sqs queue breaking the
list into batches of suitable size
"""
assert isinstance(msg_list, Iterable)
items_per_batch = calc_avg_items_per_batch(
item_count=len(msg_list),
batch_size=get_batch_bytes(),
total_size=size_in_json(msg_list))
ul.log(avg_items_per_batch=items_per_batch, queue_url=queue_url)
for batch in generate_json_item_batches(msg_list, items_per_batch,
get_batch_bytes()):
send_msg_obj_to_sqs(queue_url, batch)
def create_error_vault_database_from_vault_database(vault_database_name):
error_vault_database_name = get_error_vault_database_name(
vault_database_name)
if get_glue_database_definition(error_vault_database_name) is None:
try:
response = get_glue_database_definition(vault_database_name)
response['Database']['Name'] = error_vault_database_name
response['Database']['Description'] = 'Data Lake Errors'
keys_to_remove = ['CreateTime', 'CatalogId']
for key in keys_to_remove:
del response['Database'][key]
# print('vault_database_definition: ', response['Database'])
create_glue_database(response['Database'])
except Exception as exc:
ul.log(error=exc)
else:
ul.log(error=f'{error_vault_database_name} already exists')
def send_batches_to_sqs(queue_url, batches):
""" send_batches_to_sqs
sends each batch in baches to sqs queue
clearly requires batches to be split into suitable size for sqs already
"""
ul.log(status='starting send batches', queue_url=queue_url)
for batch_id, batch in enumerate(batches):
ul.log(batch=batch_id)
response = send_msg_obj_to_sqs(
queue_url=queue_url,
msg_obj=batch,
)
if response is not None:
ul.log(
Error='Failed to send batch to queue',
batch_id=batch_id,
httpstatuscode=response["ResponseMetadata"]["HTTPStatusCode"],
queue_url=queue_url,
response=response,
message=batch)
def delete_glue_table(database_name, table_name):
try:
glue_client.delete_table(DatabaseName=database_name, Name=table_name)
ul.log(info=f'Glue table {table_name} has been successfully deleted')
except Exception as exc:
ul.log(error=exc)
