public Executer(IDistributedCache cache, string masterConnectionString, string[] slaveConnectionStrings, ILogger log)
{
Log = log;
MasterPool = new MySqlConnectionPool("主库", masterConnectionString, null, null);
Cache = cache;
if (slaveConnectionStrings != null)
{
foreach (var slaveConnectionString in slaveConnectionStrings)
{
var slavePool = new MySqlConnectionPool($"从库{SlavePools.Count + 1}", slaveConnectionString, () => Interlocked.Decrement(ref slaveUnavailables), () => Interlocked.Increment(ref slaveUnavailables));
SlavePools.Add(slavePool);
}
}
if (cache != null)
{
var key1 = $"testCacheSupportMultiRemove{Guid.NewGuid().ToString("N")}";
var key2 = $"testCacheSupportMultiRemove{Guid.NewGuid().ToString("N")}";
cache.Set(key1, new byte[] { 65 });
cache.Set(key2, new byte[] { 65 });
try { cache.Remove($"{key1}|{key2}"); } catch { } // redis-cluster 不允许执行 multi keys 命令
CacheSupportMultiRemove = cache.Get(key1) == null && cache.Get(key2) == null;
if (CacheSupportMultiRemove == false)
{
log.LogWarning("PSqlHelper Warning: 低性能, IDistributedCache 没实现批量删除缓存 Cache.Remove(\"key1|key2\").");
CacheRemove(key1, key2);
}
}
}
void LoggerException(MySqlConnectionPool pool, MySqlCommand cmd, Exception e, DateTime dt, string logtxt, bool isThrowException = true)
{
if (IsTracePerformance)
{
TimeSpan ts = DateTime.Now.Subtract(dt);
if (e == null && ts.TotalMilliseconds > 100)
{
Log.LogWarning($"{pool.Policy.Name}执行SQL语句耗时过长{ts.TotalMilliseconds}ms\r\n{cmd.CommandText}\r\n{logtxt}");
}
}
if (e == null)
{
return;
}
string log = $"{pool.Policy.Name}数据库出错（执行SQL）〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓\r\n{cmd.CommandText}\r\n";
foreach (MySqlParameter parm in cmd.Parameters)
{
log += parm.ParameterName.PadRight(20, ' ') + " = " + (parm.Value ?? "NULL") + "\r\n";
}
log += e.Message;
Log.LogError(log);
RollbackTransaction();
cmd.Parameters.Clear();
if (isThrowException)
{
throw e;
}
}