Merge pull request #22 from bigchaindb/move-db-exception-to-the-right-module

Move db exception to the right module

bigchaindb/db/utils.py

@@ -5,13 +5,11 @@ import logging
 import rethinkdb as r
 
 import bigchaindb
+from bigchaindb import exceptions
 
 
 logger = logging.getLogger(__name__)
 
-class DatabaseAlreadyExistsException(Exception):
-    pass
-
 def get_conn():
     '''Get the connection to the database.'''
 
@@ -24,7 +22,7 @@ def init():
     dbname = bigchaindb.config['database']['name']
 
     if r.db_list().contains(dbname).run(conn):
-        raise DatabaseAlreadyExistsException('Database `{}` already exists'.format(dbname))
+        raise exceptions.DatabaseAlreadyExists('Database `{}` already exists'.format(dbname))
 
     logger.info('Create:')
     logger.info(' - database `%s`', dbname)

bigchaindb/exceptions.py

@@ -19,3 +19,6 @@ class InvalidHash(Exception):
 class InvalidSignature(Exception):
     """Raised if there was an error checking the signature for a particular operation"""
 
+class DatabaseAlreadyExists(Exception):
+    """Raised when trying to create the database but the db is already there"""
+