def verify_input(state, date=None, data=None):
"""
Verifies that user inputs to the API are within expected bounds. Unacceptable
input raises a BadRequestError with status code 400.
:param state: The state specified for the current request.
:param date: The date specified for the current request.
:param data: The body data specified for the current request.
"""
if state not in storage.STATES:
raise chalice.BadRequestError(
f"Unknown state '{state}'.\nYour choices are: "
f"{', '.join(sorted(storage.STATES))}")
if data is not None and state != data['state']:
raise chalice.BadRequestError(
f"The state '{data['state']}' specified in the request body does not "
f"match the state '{state}' specified in the URL.")
test_date = date if date is not None else None if data is None else data[
'date']
if test_date is not None:
try:
iso_date = datetime.date.fromisoformat(test_date)
earliest_date = datetime.date(year=2020, month=1, day=1)
today = datetime.date.today()
if iso_date < earliest_date or iso_date > today:
raise chalice.BadRequestError(
f"Date must be between {earliest_date} and {today}. "
f"{test_date} is outside that range.")
except ValueError as error:
raise chalice.BadRequestError from error
def _get_end_time(query_params, current_time):
if query_params is None or "end_time" not in query_params:
return current_time
try:
end_time = int(query_params["end_time"])
if end_time < 0:
raise chalice.BadRequestError(
"The end time value cannot be negative."
)
return end_time
except ValueError:
raise chalice.BadRequestError("Invalid end time type.")
def student():
"""Perform operations on individual student
Base Schema:
{
"s_id": number,
"username": "******"
}
"""
try:
request = app.current_request
request_data = app.current_request.json_body
if request.method == 'GET':
# Get student data
data = get_db().get_item(**request_data)
return {'students': data.get('Item')}
elif request.method == 'POST':
# Insert student record
return {'status': get_db().put_item(**request_data)}
elif request.method == 'DELETE':
# Delete specific item from table
return {'status': get_db().delete_item(request_data)}
elif request.method == 'PUT':
# Update existing student -
# If item not exist then it will insert new record
return {'status': get_db().update_item(request_data)}
except Exception as e:
raise chalice.BadRequestError(e)
def _get_start_time(query_params, current_time):
if query_params is None or "start_time" not in query_params:
return DEFAULT_START_TIME
try:
start_time = int(query_params["start_time"])
if start_time < 0:
raise chalice.BadRequestError(
"The start time value cannot be negative."
)
if start_time > current_time:
raise chalice.BadRequestError(
"The start time cannot be later than now."
)
return start_time
except ValueError:
raise chalice.BadRequestError("Invalid start time type.")
def _validate_notification(self, notification):
try:
match = notification['match']
except KeyError:
raise chalice.BadRequestError('Missing notification entry: match')
try:
bundle_uuid = match['bundle_uuid']
except KeyError:
raise chalice.BadRequestError('Missing notification entry: bundle_uuid')
try:
bundle_version = match['bundle_version']
except KeyError:
raise chalice.BadRequestError('Missing notification entry: bundle_version')
if not isinstance(bundle_uuid, str):
raise chalice.BadRequestError(f'Invalid type: bundle_uuid: {type(bundle_uuid)} (should be str)')
if not isinstance(bundle_version, str):
raise chalice.BadRequestError(f'Invalid type: bundle_version: {type(bundle_version)} (should be str)')
if bundle_uuid.lower() != str(uuid.UUID(bundle_uuid)).lower():
raise chalice.BadRequestError(f'Invalid syntax: {bundle_uuid} (should be a UUID)')
if not bundle_version:
raise chalice.BadRequestError('Invalid syntax: bundle_version can not be empty')
def balances_address(address):
query_params = app.current_request.query_params or {}
asset_id = _get_asset_id(query_params)
if asset_id != "{}":
cond1 = "AND b.asset_id = ANY (%(asset_id)s)"
args1 = {"asset_id": asset_id}
to_array = list(map(int, asset_id[1:-1].split(",")))
args2 = {
"asset_id": sorted(to_array) if len(to_array) > 1 else to_array[0]
}
else:
cond1 = ""
args1 = {}
args2 = {}
if not _is_address(address):
raise chalice.BadRequestError(
"Please use only alphanumeric characters and ensure total length of 48."
)
q = f"""
WITH latest_block AS (
SELECT
b.address,
max(b.block_number) AS block_number,
b.asset_id,
a.symbol
FROM {os.environ["DB_SCHEMA"]}.balance b
LEFT JOIN {os.environ["DB_SCHEMA"]}.asset a ON b.asset_id = a.id
WHERE b.address = %(address)s
""" + cond1 + f"""
GROUP BY b.address, b.asset_id, a.symbol
)
SELECT
balance,
reserved_balance AS "reservedBalance",
block_number AS "blockNumber",
asset_id AS "assetId",
symbol AS "assetSymbol"
FROM {os.environ["DB_SCHEMA"]}.balance
JOIN latest_block USING ("address", "block_number", "asset_id")
ORDER BY asset_id ASC
"""
args = {
"address": address,
}
args.update(args1)
result = _select(q, args=args)
args.update(args2)
resp = {
"params": args,
"result": result,
}
return json.dumps(resp, cls=CustomJsonEncoder)
def answer_question(question_id):
if 'answer' not in app.current_request.json_body:
raise chalice.BadRequestError('Missing "answer" in request body')
provided_answer = app.current_request.json_body['answer']
table = chalicelib.questions.QuestionsTable()
question = table.get_question(question_id)
if not question:
raise chalice.NotFoundError('Requested resource does not exist')
elif provided_answer not in question.possible_answers:
raise chalice.BadRequestError(
'Provided answer: %s is not a valid answer. Please submit an '
'answer from the list of possible answers: %s' %
(provided_answer, question.possible_answers))
return {
'is_correct': provided_answer == question.correct_answer,
'provided_answer': provided_answer,
'correct_answer': question.correct_answer,
'question_id': question.question_id
}
def answer_question_for_user(question_id):
answer_data = answer_question(question_id)
username = _get_authenticated_username()
user_table = chalicelib.users.UsersTable()
try:
user_table.update_user_score(username, question_id,
answer_data['provided_answer'],
answer_data['is_correct'])
except chalicelib.users.UserAlreadyAnsweredError as e:
raise chalice.BadRequestError(str(e))
return answer_data
def blocks():
query_params = app.current_request.query_params or {}
current_time = int(time.time())
limit = _get_limit(query_params)
page = _get_page(query_params)
start_time = _get_start_time(query_params, current_time)
end_time = _get_end_time(query_params, current_time)
if start_time > end_time:
raise chalice.BadRequestError(
"The end time cannot be before the start time."
)
q = f"""
SELECT
b."number",
b.hash,
b.parent_hash AS "parentHash",
b.state_root AS "stateRoot",
b.extrinsics_root AS "extrinsicsRoot",
b."timestamp",
b.transaction_count AS "transactionCount",
b.base_fee AS "baseFee",
b.byte_fee AS "byteFee",
b.transfer_fee AS "transferFee",
b.author,
b.extrinsic_count AS "extrinsicsCount",
s.validators
FROM {os.environ["DB_SCHEMA"]}.block b
LEFT JOIN {os.environ["DB_SCHEMA"]}.session s ON b."number" = s.block_number
WHERE b."timestamp" BETWEEN %(start_time)s AND %(end_time)s
ORDER BY b."number" DESC
LIMIT %(limit)s
OFFSET (%(page)s - 1) * %(limit)s
"""
args = {
"limit": limit,
"page": page,
"start_time": start_time,
"end_time": end_time,
}
resp = {
"params": args,
"result": _select(q, args=args),
}
return json.dumps(resp, cls=CustomJsonEncoder)
def transaction_hash(hash):
if not _is_hex(hash):
raise chalice.BadRequestError(
"Wrong hash format. Please use only alphanumeric characters and `0x` prefix."
)
q = f"""
SELECT
tx.hash,
tx.block_number AS "blockNumber",
tx.block_hash AS "blockHash",
tx.from_address AS "fromAddress",
b1.balance AS "fromAddressBalance",
tx.to_address AS "toAddress",
b2.balance AS "toAddressBalance",
tx."value",
tx.fee,
tx.nonce,
tx."size",
tx.status,
tx."timestamp",
tx.asset_id AS "assetId",
a.symbol AS "assetSymbol",
tx.gas_limit AS "gasLimit",
tx.index,
tx.type,
tx.data
FROM {os.environ["DB_SCHEMA"]}.transaction tx
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b1 ON tx.block_number = b1.block_number AND tx.from_address = b1.address AND tx.asset_id = b1.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b2 ON tx.block_number = b2.block_number AND tx.to_address = b2.address AND tx.asset_id = b2.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.asset a ON tx.asset_id = a.id
WHERE tx."hash" = %(hash)s
"""
args = {
"hash": hash,
}
resp = {
"result": _select(q, args=args, one=True),
}
return json.dumps(resp, cls=CustomJsonEncoder)
def block(id):
# {id} can be either block number or block hash
column = ""
if id.isdigit():
column = 'b."number"'
id = int(id)
elif _is_hex(id):
column = 'b.hash'
else:
raise chalice.BadRequestError(
"Please specify either block number or block hash."
)
q = f"""
SELECT
b."number",
b.hash,
b.parent_hash AS "parentHash",
b.state_root AS "stateRoot",
b.extrinsics_root AS "extrinsicsRoot",
b."timestamp",
b.transaction_count AS "transactionCount",
b.base_fee AS "baseFee",
b.byte_fee AS "byteFee",
b.transfer_fee AS "transferFee",
b.author,
b.extrinsic_count AS "extrinsicsCount",
s.validators
FROM {os.environ["DB_SCHEMA"]}.block b
LEFT JOIN {os.environ["DB_SCHEMA"]}.session s ON b."number" = s.block_number
WHERE {column} = %(id)s
"""
args = {
"id": id,
}
resp = {
"result": _select(q, args=args, one=True),
}
return json.dumps(resp, cls=CustomJsonEncoder)
def address_transactions(address):
query_params = app.current_request.query_params or {}
current_time = int(time.time())
limit = _get_limit(query_params)
page = _get_page(query_params)
start_time = _get_start_time(query_params, current_time)
end_time = _get_end_time(query_params, current_time)
asset_id = _get_asset_id(query_params)
txn_flow = _get_txn_flow(query_params)
txn_type = _get_txn_type(query_params)
if asset_id != "{}":
cond1 = "AND tx.asset_id = ANY (%(asset_id)s)"
args1 = {"asset_id": asset_id}
to_array = list(map(int, asset_id[1:-1].split(",")))
args2 = {
"asset_id": sorted(to_array) if len(to_array) > 1 else to_array[0]
}
else:
cond1 = ""
args1 = {}
args2 = {}
if start_time > end_time:
raise chalice.BadRequestError(
"The end time cannot be before the start time."
)
if not _is_address(address):
raise chalice.BadRequestError(
"Please use only alphanumeric characters and ensure total length of 48."
)
q_total_cnt = f"""
WITH block AS (
SELECT
"number" AS block_number
FROM {os.environ["DB_SCHEMA"]}.block
WHERE "timestamp" BETWEEN %(start_time)s AND %(end_time)s
), combined_txns AS (
SELECT
CASE WHEN from_address = %(address)s THEN 'Outgoing' ELSE 'Incoming' END AS txn_flow,
type,
asset_id
FROM {os.environ["DB_SCHEMA"]}.transaction
JOIN block USING ("block_number")
WHERE to_address = %(address)s OR from_address = %(address)s
UNION ALL
SELECT
CASE WHEN from_address = %(address)s THEN 'Outgoing' ELSE 'Incoming' END AS txn_flow,
'Internal'::text AS type,
asset_id
FROM {os.environ["DB_SCHEMA"]}.trace
JOIN block USING ("block_number")
WHERE to_address = %(address)s OR from_address = %(address)s
)
SELECT count(*) AS total
FROM combined_txns tx
WHERE tx.txn_flow = ANY ( %(txn_flow)s )
AND tx.type = ANY (%(txn_type)s)
""" + cond1
q = f"""
WITH block AS (
SELECT
hash AS block_hash, "number" AS block_number
FROM {os.environ["DB_SCHEMA"]}.block
WHERE "timestamp" BETWEEN %(start_time)s AND %(end_time)s
), combined_txns AS (
SELECT tx.*,
CASE WHEN from_address = %(address)s THEN 'Outgoing' ELSE 'Incoming' END AS txn_flow
FROM {os.environ["DB_SCHEMA"]}.transaction tx
JOIN block USING ("block_number")
WHERE to_address = %(address)s OR from_address = %(address)s
UNION ALL
SELECT transaction_hash as hash, block_number, block.block_hash, from_address, to_address, value, null, null, null,
true::bool AS status, timestamp, asset_id, null, index, 'Internal'::text AS type, null,
CASE WHEN from_address = %(address)s THEN 'Outgoing' ELSE 'Incoming' END AS txn_flow
FROM {os.environ["DB_SCHEMA"]}.trace
JOIN block USING ("block_number")
WHERE to_address = %(address)s OR from_address = %(address)s
)
SELECT
tx.hash,
tx.block_number AS "blockNumber",
tx.block_hash AS "blockHash",
tx.from_address AS "fromAddress",
b1.balance AS "fromAddressBalance",
tx.to_address AS "toAddress",
b2.balance AS "toAddressBalance",
tx."value",
tx.fee,
tx.nonce,
tx."size",
tx.status,
tx."timestamp",
tx.asset_id AS "assetId",
tx.txn_flow AS "transactionFlow",
a.symbol AS "assetSymbol",
tx.gas_limit AS "gasLimit",
tx.index,
tx.type,
tx.data
FROM combined_txns tx
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b1 ON tx.block_number = b1.block_number AND tx.from_address = b1.address AND tx.asset_id = b1.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b2 ON tx.block_number = b2.block_number AND tx.to_address = b2.address AND tx.asset_id = b2.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.asset a ON tx.asset_id = a.id
WHERE tx.txn_flow = ANY ( %(txn_flow)s )
AND tx.type = ANY ( %(txn_type)s )
""" + cond1 + f"""
ORDER BY tx.block_number DESC, tx.index ASC
LIMIT %(limit)s
OFFSET (%(page)s - 1) * %(limit)s
"""
args = {
"address": address,
"limit": limit,
"page": page,
"start_time": start_time,
"end_time": end_time,
"txn_flow": txn_flow,
"txn_type": txn_type,
}
args.update(args1)
result = _select(q, args=args)
args.update(_select(q_total_cnt, args=args, one=True) or {})
args.update(
{
"txn_flow": txn_flow[1:-1].split(","),
"txn_type": txn_type[1:-1].split(",")
}
)
args.update(args2)
resp = {
"params": args,
"result": result,
}
return json.dumps(resp, cls=CustomJsonEncoder)
def transaction_hash_internal(hash):
query_params = app.current_request.query_params or {}
limit = _get_limit(query_params)
page = _get_page(query_params)
asset_id = _get_asset_id(query_params)
if asset_id != "{}":
cond1 = "AND tx.asset_id = ANY (%(asset_id)s)"
args1 = {"asset_id": asset_id}
to_array = list(map(int, asset_id[1:-1].split(",")))
args2 = {
"asset_id": sorted(to_array) if len(to_array) > 1 else to_array[0]
}
else:
cond1 = ""
args1 = {}
args2 = {}
if not _is_hex(hash):
raise chalice.BadRequestError(
"Wrong hash format. Please use only alphanumeric characters and `0x` prefix."
)
q_total_cnt = f"""
SELECT count(*) AS total
FROM {os.environ["DB_SCHEMA"]}.trace tx
WHERE tx.transaction_hash = %(hash)s
""" + cond1
q = f"""
SELECT
tx.transaction_hash AS "hash",
tx.block_number AS "blockNumber",
tx.from_address AS "fromAddress",
b1.balance AS "fromAddressBalance",
tx.to_address AS "toAddress",
b2.balance AS "toAddressBalance",
tx."value",
tx."timestamp",
tx.asset_id AS "assetId",
a.symbol AS "assetSymbol",
tx.index
FROM {os.environ["DB_SCHEMA"]}.trace tx
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b1 ON tx.block_number = b1.block_number AND tx.from_address = b1.address AND tx.asset_id = b1.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b2 ON tx.block_number = b2.block_number AND tx.to_address = b2.address AND tx.asset_id = b2.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.asset a ON tx.asset_id = a.id
WHERE tx.transaction_hash = %(hash)s
""" + cond1 + """
ORDER BY tx.index ASC
"""
args = {
"hash": hash,
"limit": limit,
"page": page,
}
args.update(args1)
result = _select(q, args=args)
args.update(_select(q_total_cnt, args=args, one=True) or {})
args.update(args2)
resp = {
"params": args,
"result": result,
}
return json.dumps(resp, cls=CustomJsonEncoder)
def block_transactions(id):
query_params = app.current_request.query_params or {}
limit = _get_limit(query_params)
page = _get_page(query_params)
asset_id = _get_asset_id(query_params)
txn_type = _get_txn_type(query_params)
if asset_id != "{}":
cond1 = "AND tx.asset_id = ANY (%(asset_id)s)"
args1 = {"asset_id": asset_id}
to_array = list(map(int, asset_id[1:-1].split(",")))
args2 = {
"asset_id": sorted(to_array) if len(to_array) > 1 else to_array[0]
}
else:
cond1 = ""
args1 = {}
args2 = {}
# {id} can be either block number or block hash
column = ""
if id.isdigit():
column = "number"
id = int(id)
elif _is_hex(id):
column = "hash"
else:
raise chalice.BadRequestError(
"Please specify either block number or block hash."
)
q_total_cnt = f"""
WITH block AS (
SELECT
"number" AS block_number
FROM {os.environ["DB_SCHEMA"]}.block
WHERE {column} = %(id)s
), combined_txns AS (
SELECT type, asset_id
FROM {os.environ["DB_SCHEMA"]}.transaction
JOIN block USING ("block_number")
UNION ALL
SELECT 'Internal'::text AS type, asset_id
FROM {os.environ["DB_SCHEMA"]}.trace
JOIN block USING ("block_number")
)
SELECT count(*) AS total
FROM combined_txns tx
WHERE tx.type = ANY (%(txn_type)s)
""" + cond1
q = f"""
WITH block AS (
SELECT
hash AS block_hash, "number" AS block_number
FROM {os.environ["DB_SCHEMA"]}.block
WHERE {column} = %(id)s
), combined_txns AS (
SELECT tx.*
FROM {os.environ["DB_SCHEMA"]}.transaction tx
JOIN block USING ("block_number")
UNION ALL
SELECT transaction_hash as hash, block_number, block.block_hash, from_address, to_address, value, null, null, null,
true::bool AS status, timestamp, asset_id, null, index, 'Internal'::text AS type, null
FROM {os.environ["DB_SCHEMA"]}.trace
JOIN block USING ("block_number")
)
SELECT
tx.hash,
tx.block_number AS "blockNumber",
tx.block_hash AS "blockHash",
tx.from_address AS "fromAddress",
b1.balance AS "fromAddressBalance",
tx.to_address AS "toAddress",
b2.balance AS "toAddressBalance",
tx."value",
tx.fee,
tx.nonce,
tx."size",
tx.status,
tx."timestamp",
tx.asset_id AS "assetId",
a.symbol AS "assetSymbol",
tx.gas_limit AS "gasLimit",
tx.index,
tx.type,
tx.data
FROM combined_txns tx
JOIN block USING("block_number")
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b1 ON tx.block_number = b1.block_number AND tx.from_address = b1.address AND tx.asset_id = b1.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.balance b2 ON tx.block_number = b2.block_number AND tx.to_address = b2.address AND tx.asset_id = b2.asset_id
LEFT JOIN {os.environ["DB_SCHEMA"]}.asset a ON tx.asset_id = a.id
WHERE tx.type = ANY (%(txn_type)s)
""" + cond1 + f"""
ORDER BY tx.block_number DESC, tx.index ASC
LIMIT %(limit)s
OFFSET (%(page)s - 1) * %(limit)s
"""
args = {
"id": id,
"limit": limit,
"page": page,
"txn_type": txn_type,
}
args.update(args1)
result = _select(q, args=args)
args.update(_select(q_total_cnt, args=args, one=True) or {})
args.update({"txn_type": txn_type[1:-1].split(",")})
args.update(args2)
resp = {
"params": args,
"result": result,
}
return json.dumps(resp, cls=CustomJsonEncoder)