Initial commit

* Examples work
* setup.py kinda updasted
* Fork of txmongo but with new pymongo embedded

asyncio_mongo/exceptions.py

@@ -0,0 +1,54 @@
+__all__ = (
+        'ConnectionLostError',
+        'Error',
+        'ErrorReply',
+        'NoAvailableConnectionsInPoolError',
+        'NoRunningScriptError',
+        'NotConnectedError',
+        'ScriptKilledError',
+        'TransactionError',
+)
+
+
+# See following link for the proper way to create user defined exceptions:
+# http://docs.python.org/3.3/tutorial/errors.html#user-defined-exceptions
+
+
+class Error(Exception):
+    """ Base exception. """
+
+
+class ErrorReply(Exception):
+    """ Exception when the mongo server returns an error. """
+
+
+class TransactionError(Error):
+    """ Transaction failed. """
+
+
+class NotConnectedError(Error):
+    """ Protocol is not connected. """
+    def __init__(self, message='Not connected'):
+        super().__init__(message)
+
+
+class ConnectionLostError(NotConnectedError):
+    """
+    Connection lost during query.
+    (Special case of ``NotConnectedError``.)
+    """
+    def __init__(self, exc):
+        self.exception = exc
+
+
+class NoAvailableConnectionsInPoolError(NotConnectedError):
+    """
+    When the connection pool has no available connections.
+    """
+
+class ScriptKilledError(Error):
+    """ Script was killed during an evalsha call. """
+
+
+class NoRunningScriptError(Error):
+    """ script_kill was called while no script was running. """