Inherit from BigchainDBError for common exceptions

bigchaindb/common/exceptions.py

@@ -1,28 +1,29 @@
 """Custom exceptions used in the `bigchaindb` package.
 """
+from bigchaindb.exceptions import BigchainDBError
 
 
-class ConfigurationError(Exception):
+class ConfigurationError(BigchainDBError):
     """Raised when there is a problem with server configuration"""
 
 
-class OperationError(Exception):
+class OperationError(BigchainDBError):
     """Raised when an operation cannot go through"""
 
 
-class TransactionDoesNotExist(Exception):
+class TransactionDoesNotExist(BigchainDBError):
     """Raised if the transaction is not in the database"""
 
 
-class TransactionOwnerError(Exception):
+class TransactionOwnerError(BigchainDBError):
     """Raised if a user tries to transfer a transaction they don't own"""
 
 
-class DoubleSpend(Exception):
+class DoubleSpend(BigchainDBError):
     """Raised if a double spend is found"""
 
 
-class ValidationError(Exception):
+class ValidationError(BigchainDBError):
     """Raised if there was an error in validation"""
 
 
@@ -35,56 +36,56 @@ class SchemaValidationError(ValidationError):
     """Raised if there was any error validating an object's schema"""
 
 
-class InvalidSignature(Exception):
+class InvalidSignature(BigchainDBError):
     """Raised if there was an error checking the signature for a particular
     operation"""
 
 
-class DatabaseAlreadyExists(Exception):
+class DatabaseAlreadyExists(BigchainDBError):
     """Raised when trying to create the database but the db is already there"""
 
 
-class DatabaseDoesNotExist(Exception):
+class DatabaseDoesNotExist(BigchainDBError):
     """Raised when trying to delete the database but the db is not there"""
 
 
-class KeypairNotFoundException(Exception):
+class KeypairNotFoundException(BigchainDBError):
     """Raised if operation cannot proceed because the keypair was not given"""
 
 
-class KeypairMismatchException(Exception):
+class KeypairMismatchException(BigchainDBError):
     """Raised if the private key(s) provided for signing don't match any of the
     current owner(s)"""
 
 
-class StartupError(Exception):
+class StartupError(BigchainDBError):
     """Raised when there is an error starting up the system"""
 
 
-class ImproperVoteError(Exception):
+class ImproperVoteError(BigchainDBError):
     """Raised if a vote is not constructed correctly, or signed incorrectly"""
 
 
-class MultipleVotesError(Exception):
+class MultipleVotesError(BigchainDBError):
     """Raised if a voter has voted more than once"""
 
 
-class GenesisBlockAlreadyExistsError(Exception):
+class GenesisBlockAlreadyExistsError(BigchainDBError):
     """Raised when trying to create the already existing genesis block"""
 
 
-class CyclicBlockchainError(Exception):
+class CyclicBlockchainError(BigchainDBError):
     """Raised when there is a cycle in the blockchain"""
 
 
-class TransactionNotInValidBlock(Exception):
+class TransactionNotInValidBlock(BigchainDBError):
     """Raised when a transfer transaction is attempting to fulfill the
     outputs of a transaction that is in an invalid or undecided block"""
 
 
-class AssetIdMismatch(Exception):
+class AssetIdMismatch(BigchainDBError):
     """Raised when multiple transaction inputs related to different assets"""
 
 
-class AmountError(Exception):
+class AmountError(BigchainDBError):
     """Raised when there is a problem with a transaction's output amounts"""