Fix failed CI test

Author: ongdisheng

ibis-server/app/model/__init__.py

@@ -95,7 +95,7 @@ class MySqlConnectionInfo(BaseModel):
     database: SecretStr
     user: SecretStr
     password: SecretStr
-    ssl_mode: SecretStr = Field(alias="sslMode")
+    ssl_mode: SecretStr | None = Field(alias="sslMode", default=None)
     ssl_ca: SecretStr | None = Field(alias="sslCA", default=None)
     kwargs: dict[str, str] | None = Field(
         description="Additional keyword arguments to pass to PyMySQL", default=None

ibis-server/app/model/data_source.py

@@ -183,9 +183,11 @@ def _escape_special_characters_for_odbc(value: str) -> str:
 
     @staticmethod
     def _create_ssl_context(info: ConnectionInfo) -> Optional[ssl.SSLContext]:
-        ssl_mode = info.ssl_mode.get_secret_value()
+        ssl_mode = (
+            info.ssl_mode.get_secret_value() if hasattr(info, "ssl_mode") else None
+        )
 
-        if ssl_mode == SSLMode.DISABLE:
+        if not ssl_mode or ssl_mode == SSLMode.DISABLE:
             return None
 
         ctx = ssl.create_default_context()