简介

该API在Roach主代理与非主代理间的通信即将断开前调用。

范例

ERROR_CONTRIB_CODE preDestroy(ROACH_CNTRB *contrib, 
CONTRIB_OPERATION eOperation,
char *gaussHome)
{
bool cmdExec  = false;
LOGINFO("CONTRIB operation during PREDESTROY...\n");
contrib->eState = CONTRIB_PREDESTROY;
return (EC_CONTRIB_SUCCESS);
}