#12 dummy cryptor for cryptoless build

raftos/conf.py

@@ -24,6 +24,7 @@ def default_settings():
             # For UDP messages encryption
             'secret_key': b'raftos sample secret key',
             'salt': b'raftos sample salt',
+            'crypto_enabled': True,
 
             # Election callbacks
             'on_leader': lambda: None,

raftos/cryptor.py

@@ -1,12 +1,15 @@
 import base64
 
-from cryptography.fernet import Fernet
-from cryptography.hazmat.backends import default_backend
-from cryptography.hazmat.primitives import hashes
-from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
-
 from .conf import config
 
+try:
+    from cryptography.fernet import Fernet
+    from cryptography.hazmat.backends import default_backend
+    from cryptography.hazmat.primitives import hashes
+    from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
+except ImportError:
+    config.crypto_enabled = False
+
 
 class Cryptor:
     def __init__(self):
@@ -26,4 +29,15 @@ def decrypt(self, data):
         return self.f.decrypt(data)
 
 
-cryptor = Cryptor()
+class DummyCryptor:
+    def encrypt(self, data):
+        return data
+
+    def decrypt(self, data):
+        return data
+
+
+if config.crypto_enabled:
+    cryptor = Cryptor()
+else:
+    cryptor = DummyCryptor()

setup.py

@@ -3,7 +3,7 @@
 from setuptools import setup
 
 
-__version__ = '0.2.3'
+__version__ = '0.2.4'
 
 short_description = 'Raft replication in Python'
 requirements = [req.strip() for req in open('requirements.txt').readlines()]