def post(self):
"""
Publishes an item to a stream.
"""
blockchain_name = data_ns.payload[BLOCKCHAIN_NAME_FIELD_NAME]
stream_name = data_ns.payload[STREAM_NAME_FIELD_NAME]
keys = data_ns.payload[KEYS_FIELD_NAME]
data = data_ns.payload[DATA_FIELD_NAME]
if not blockchain_name or not blockchain_name.strip():
raise ValueError("The blockchain name can't be empty!")
if not stream_name or not stream_name.strip():
raise ValueError("The stream name can't be empty!")
if not keys:
raise ValueError("The list of keys can't be empty!")
if not data:
raise ValueError("The data can't be empty!")
blockchain_name = blockchain_name.strip()
stream_name = stream_name.strip()
DataController.publish_item(blockchain_name, stream_name, keys, data)
return {"status": "Data published!"}, status.HTTP_200_OK
def get(self):
"""
Provides information about keys in a stream
"""
args = stream_keys_parser.parse_args(strict=True)
blockchain_name = args[BLOCKCHAIN_NAME_FIELD_NAME]
stream_name = args[STREAM_NAME_FIELD_NAME]
stream_keys = args[KEYS_FIELD_NAME]
verbose = args[VERBOSE_FIELD_NAME]
count = args[COUNT_FIELD_NAME]
start = args[START_FIELD_NAME]
local_ordering = args[LOCAL_ORDERING_FIELD_NAME]
if not blockchain_name or not blockchain_name.strip():
raise ValueError("The blockchain name can't be empty!")
if not stream_name or not stream_name.strip():
raise ValueError("The stream name can't be empty!")
blockchain_name = blockchain_name.strip()
stream_name = stream_name.strip()
json_data = DataController.get_stream_keys(
blockchain_name,
stream_name,
stream_keys,
verbose,
count,
start,
local_ordering,
)
return json_data, status.HTTP_200_OK
def get(self):
"""
Retrieves items in stream which match all of the specified publishers in query.
"""
args = items_publishers_parser.parse_args(strict=True)
blockchain_name = args[BLOCKCHAIN_NAME_FIELD_NAME]
stream_name = args[STREAM_NAME_FIELD_NAME]
publishers = args[PUBLISHERS_FIELD_NAME]
verbose = args[VERBOSE_FIELD_NAME]
if not blockchain_name or not blockchain_name.strip():
raise ValueError("The blockchain name can't be empty!")
if not stream_name or not stream_name.strip():
raise ValueError("The stream name can't be empty!")
if not publishers:
raise ValueError("The list of publishers can't be empty!")
blockchain_name = blockchain_name.strip()
stream_name = stream_name.strip()
json_data = DataController.get_items_by_publishers(
blockchain_name, stream_name, publishers, verbose)
return json_data, status.HTTP_200_OK
def get(self):
"""
Retrieves items in stream.
"""
args = base_parser.parse_args(strict=True)
blockchain_name = args[BLOCKCHAIN_NAME_FIELD_NAME]
stream_name = args[STREAM_NAME_FIELD_NAME]
verbose = args[VERBOSE_FIELD_NAME]
count = args[COUNT_FIELD_NAME]
start = args[START_FIELD_NAME]
local_ordering = args[LOCAL_ORDERING_FIELD_NAME]
if not blockchain_name or not blockchain_name.strip():
raise ValueError("The blockchain name can't be empty!")
if not stream_name or not stream_name.strip():
raise ValueError("The stream name can't be empty!")
blockchain_name = blockchain_name.strip()
stream_name = stream_name.strip()
json_data = DataController.get_stream_items(blockchain_name,
stream_name, verbose,
count, start,
local_ordering)
return json_data, status.HTTP_200_OK
def get(self):
"""
Retrieves items that belong to the specified key from stream, passed as a stream name to which the node must be subscribed.
"""
args = items_key_parser.parse_args(strict=True)
blockchain_name = args[BLOCKCHAIN_NAME_FIELD_NAME]
stream_name = args[STREAM_NAME_FIELD_NAME]
key = args[KEY_FIELD_NAME]
verbose = args[VERBOSE_FIELD_NAME]
count = args[COUNT_FIELD_NAME]
start = args[START_FIELD_NAME]
local_ordering = args[LOCAL_ORDERING_FIELD_NAME]
if blockchain_name is None:
raise ValueError("The " + BLOCKCHAIN_NAME_FIELD_NAME +
" parameter was not found in the request!")
if stream_name is None:
raise ValueError("The " + STREAM_NAME_FIELD_NAME +
" parameter was not found in the request!")
if key is None:
raise ValueError("The " + KEY_FIELD_NAME +
" parameter was not found in the request!")
verbose = DataController.DEFAULT_VERBOSE_VALUE
count = DataController.DEFAULT_ITEM_COUNT_VALUE
start = DataController.DEFAULT_ITEM_START_VALUE
local_ordering = DataController.DEFAULT_LOCAL_ORDERING_VALUE
if not blockchain_name or not blockchain_name.strip():
raise ValueError("The blockchain name can't be empty!")
if not stream_name or not stream_name.strip():
raise ValueError("The stream name can't be empty!")
if not key or not key.strip():
raise ValueError("The data key can't be empty!")
blockchain_name = blockchain_name.strip()
stream_name = stream_name.strip()
key = key.strip()
json_data = DataController.get_items_by_key(blockchain_name,
stream_name, key, verbose,
count, start,
local_ordering)
return json_data, status.HTTP_200_OK