Tweak test requirements (#42)

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 * In the next minor release (0.3.0) the row_binary option for ClickHouse serialization will be removed.  The performance is significantly lower than Native format and maintaining the option adds complexity with no corresponding benefit
 
+### Release 0.2.7 2022-09-10
+
+#### Improvement
+* The HTTP client now raises an OperationalError instead of a DatabaseError when the HTTP status code is 429 (too many requests), 503 (service unavailable), or 504 (gateway timeout) to make it easier to determine if it is a retryable exception
 
 ### Release 0.2.6 2022-09-08
 

clickhouse_connect/driver/client.py

@@ -397,7 +397,7 @@ def raw_insert(self, table: str,
                    fmt: Optional[str] = None):
         """
         Insert data already formatted in a bytes object
-        :param table: Table name (whether or not qualified with the database name
+        :param table: Table name (whether qualified with the database name or not)
         :param column_names: Sequence of column names
         :param insert_block: Binary or string data already in a recognized ClickHouse format
         :param settings:  Optional dictionary of ClickHouse settings (key/string values)

clickhouse_connect/driver/httpclient.py

@@ -272,8 +272,10 @@ def _raw_request(self,
                 err_msg = response.content.decode(errors='backslashreplace')
                 logger.error(str(err_msg))
                 err_str = f':{err_str}\n {err_msg[0:240]}'
-            if attempts > retries or response.status_code not in (429, 503, 504):
+            if response.status_code not in (429, 503, 504):
                 raise DatabaseError(err_str)
+            if attempts > retries:
+                raise OperationalError(err_str)
 
     def ping(self):
         """