adjusted hashlib imports and renamed to bigchaindb error

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

planetmint/backend/exceptions.py

@@ -3,10 +3,10 @@
 # SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
 # Code is Apache-2.0 and docs are CC-BY-4.0
 
-from planetmint.exceptions import BigchainDBError
+from planetmint.exceptions import PlanetmintError
 
 
-class BackendError(BigchainDBError):
+class BackendError(PlanetmintError):
     """Top level exception for any backend exception."""
 
 

planetmint/exceptions.py

@@ -4,9 +4,9 @@
 # Code is Apache-2.0 and docs are CC-BY-4.0
 
 
-class BigchainDBError(Exception):
+class PlanetmintError(Exception):
     """Base class for Planetmint exceptions."""
 
 
-class CriticalDoubleSpend(BigchainDBError):
+class CriticalDoubleSpend(PlanetmintError):
     """Data integrity error that requires attention"""

planetmint/lib.py

@@ -13,11 +13,7 @@ from uuid import uuid4
 
 import rapidjson
 
-try:
 from hashlib import sha3_256
-except ImportError:
-    # NOTE: needed for Python < 3.6
-    from sha3 import sha3_256
 
 import requests
 

planetmint/tendermint_utils.py

@@ -8,10 +8,7 @@ import hashlib
 import json
 from binascii import hexlify
 
-try:
 from hashlib import sha3_256
-except ImportError:
-    from sha3 import sha3_256
 
 
 def encode_transaction(value):

planetmint/transactions/common/crypto.py

@@ -5,12 +5,7 @@
 
 # Separate all crypto code so that we can easily test several implementations
 from collections import namedtuple
-
-try:
 from hashlib import sha3_256
-except ImportError:
-    from sha3 import sha3_256
-
 from cryptoconditions import crypto
 
 

planetmint/transactions/common/exceptions.py

@@ -5,32 +5,32 @@
 
 """Custom exceptions used in the `planetmint` package.
 """
-from planetmint.exceptions import BigchainDBError
+from planetmint.exceptions import PlanetmintError
 
 
-class ConfigurationError(BigchainDBError):
+class ConfigurationError(PlanetmintError):
     """Raised when there is a problem with server configuration"""
 
 
-class DatabaseDoesNotExist(BigchainDBError):
+class DatabaseDoesNotExist(PlanetmintError):
     """Raised when trying to delete the database but the db is not there"""
 
 
-class StartupError(BigchainDBError):
+class StartupError(PlanetmintError):
     """Raised when there is an error starting up the system"""
 
 
-class CyclicBlockchainError(BigchainDBError):
+class CyclicBlockchainError(PlanetmintError):
     """Raised when there is a cycle in the blockchain"""
 
 
-class KeypairMismatchException(BigchainDBError):
+class KeypairMismatchException(PlanetmintError):
     """Raised if the private key(s) provided for signing don't match any of the
     current owner(s)
     """
 
 
-class OperationError(BigchainDBError):
+class OperationError(PlanetmintError):
     """Raised when an operation cannot go through"""
 
 
@@ -43,7 +43,7 @@ class OperationError(BigchainDBError):
 # especially for the purposes of testing.
 
 
-class ValidationError(BigchainDBError):
+class ValidationError(PlanetmintError):
     """Raised if there was an error in validation"""
 
 

planetmint/transactions/common/transaction.py

@@ -21,10 +21,7 @@ from cryptoconditions import Fulfillment, ThresholdSha256, Ed25519Sha256, Zenroo
 from cryptoconditions.exceptions import ParsingError, ASN1DecodeError, ASN1EncodeError
 from cid import is_cid
 
-try:
 from hashlib import sha3_256
-except ImportError:
-    from sha3 import sha3_256
 
 from planetmint.transactions.common.crypto import PrivateKey, hash_data
 from planetmint.transactions.common.exceptions import (

tests/common/test_transaction.py

@@ -22,12 +22,8 @@ from cryptoconditions import Fulfillment
 from cryptoconditions import PreimageSha256
 from cryptoconditions import Ed25519Sha256
 from pytest import mark, raises
-from ipld import marshal, multihash
 
-try:
 from hashlib import sha3_256
-except ImportError:
-    from sha3 import sha3_256
 
 pytestmark = mark.bdb
 

tests/tendermint/test_lib.py

@@ -9,11 +9,7 @@ from unittest.mock import patch
 from planetmint.transactions.types.assets.create import Create
 from planetmint.transactions.types.assets.transfer import Transfer
 
-try:
 from hashlib import sha3_256
-except ImportError:
-    # NOTE: needed for Python < 3.6
-    from sha3 import sha3_256
 
 import pytest
 from pymongo import MongoClient

tests/tendermint/test_utils.py

@@ -7,10 +7,7 @@ import base64
 import json
 from pytest import mark
 
-try:
 from hashlib import sha3_256
-except ImportError:
-    from sha3 import sha3_256
 
 
 def test_encode_decode_transaction(b):

tests/validation/test_transaction_structure.py

@@ -11,10 +11,7 @@ import json
 
 import pytest
 
-try:
 import hashlib as sha3
-except ImportError:
-    import sha3
 from unittest.mock import MagicMock
 
 from planetmint.transactions.common.exceptions import AmountError, SchemaValidationError, ThresholdTooDeep

tests/web/test_transactions.py

@@ -11,10 +11,7 @@ import pytest
 from cryptoconditions import Ed25519Sha256
 from ipld import multihash, marshal
 
-try:
 from hashlib import sha3_256
-except ImportError:
-    from sha3 import sha3_256
 
 from planetmint.transactions.common import crypto
 from planetmint.transactions.types.assets.create import Create