mysqlclient added internalerror for the interfaceerror issue

[Mike Bayer]

https://github.com/PyMySQL/mysqlclient-python/issues/202

means we need this for reconnect tests to pass:

diff --git a/lib/sqlalchemy/dialects/mysql/base.py b/lib/sqlalchemy/dialects/mysql/base.py
index 5b01b2c1f..e8cfcbae4 100644
--- a/lib/sqlalchemy/dialects/mysql/base.py
+++ b/lib/sqlalchemy/dialects/mysql/base.py
@@ -1785,7 +1785,7 @@ class MySQLDialect(default.DefaultDialect):
                           self.dbapi.ProgrammingError)):
             return self._extract_error_code(e) in \
                 (2006, 2013, 2014, 2045, 2055)
-        elif isinstance(e, self.dbapi.InterfaceError):
+        elif isinstance(e, (self.dbapi.InterfaceError, self.dbapi.InternalError)):
             # if underlying connection is closed,
             # this is the error you get
             return "(0, '')" in str(e)

might as well backport to 1.0.

[Mike Bayer]

Add InternalError for mysqlclient disconnect

mysqlclient as of 1.3.11 changed the exception class for a particular disconnect situation from InterfaceError to InternalError; the disconnection detection logic now accommodates this.

Change-Id: I294f90f794491fd363548719222d8e3008480615 Fixes: #4065

→ <<cset 65680b2343ef>>

[Mike Bayer]

Add InternalError for mysqlclient disconnect

mysqlclient as of 1.3.11 changed the exception class for a particular disconnect situation from InterfaceError to InternalError; the disconnection detection logic now accommodates this.

Change-Id: I294f90f794491fd363548719222d8e3008480615 Fixes: #4065 (cherry picked from commit 65680b2343ef421a62582e23e2b35293732933ad)

→ <<cset 4be865f79bea>>

[Mike Bayer]

Add InternalError for mysqlclient disconnect

mysqlclient as of 1.3.11 changed the exception class for a particular disconnect situation from InterfaceError to InternalError; the disconnection detection logic now accommodates this.

Change-Id: I294f90f794491fd363548719222d8e3008480615 Fixes: #4065 (cherry picked from commit 65680b2343ef421a62582e23e2b35293732933ad)

→ <<cset a550232fc26f>>