public virtual bool Add(DbConn PubConn, tb_partition_model model)
{
List<ProcedureParameter> Par = new List<ProcedureParameter>()
{
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new ProcedureParameter("@isused", model.isused),
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new ProcedureParameter("@createtime", model.createtime)
};
int rev = PubConn.ExecuteSql(@"insert into tb_partition(isused,createtime)
values(@isused,@createtime)", Par);
return rev == 1;
}
public virtual bool Edit(DbConn PubConn, tb_partition_model model)
{
List<ProcedureParameter> Par = new List<ProcedureParameter>()
{
//�Ƿ���ʹ��
new ProcedureParameter("@isused", model.isused),
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new ProcedureParameter("@createtime", model.createtime)
};
Par.Add(new ProcedureParameter("@partitionid", model.partitionid));
int rev = PubConn.ExecuteSql("update tb_partition set isused=@isused,createtime=@createtime where partitionid=@partitionid", Par);
return rev == 1;
}
public ActionResult Add(int nodeid,int count)
{
try
{
using (DbConn conn = DbConfig.CreateConn(DataConfig.MqManage))
{
conn.Open();
try
{
conn.BeginTransaction();
int r = 0;
var partitons = new tb_partition_dal().GetPageList(conn, "", nodeid, -1, 1, 100, ref r);
List<int> usedpartitionids = new List<int>();
foreach (var d in partitons)
{
if (!usedpartitionids.Contains(d.partitionid))
usedpartitionids.Add(d.partitionid);
}
List<int> canusepartitionids = new List<int>();
for (var i = 1; i < 100; i++)
{
var partition = XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.PartitionRuleHelper.GetPartitionID(new XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.PartitionIDInfo() { DataNodePartition = nodeid, TablePartition =i });
if (!usedpartitionids.Contains(partition))
canusepartitionids.Add(partition);
}
for (int i = 0; i < count; i++)
{
tb_partition_model model = new tb_partition_model();
model.isused = false;
model.partitionid = canusepartitionids[i];
dal.AddPartition(conn, model);
}
conn.Commit();
}
catch (Exception exp)
{
conn.Rollback();
throw exp;
}
}
return RedirectToAction("index", new { nodeId = nodeid });
}
catch (Exception exp)
{
ModelState.AddModelError("Error","添加失败"+ exp.Message);
return View();
}
}
private void MoveDataToToday(DateTime fromdate, DateTime serverdate, tb_partition_model p, Dictionary<int, tb_datanode_model> datanodemodels)
{
var partitioninfo = XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.PartitionRuleHelper.GetPartitionIDInfo(p.partitionid);
var fromtablename = XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.PartitionRuleHelper.GetTableName(partitioninfo.TablePartition, fromdate);
var currenttablename = XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.PartitionRuleHelper.GetTableName(partitioninfo.TablePartition, serverdate);
//二分法查找起始点
long startmovemqid = StartMoveMQID(fromtablename, partitioninfo, datanodemodels, p, fromdate);
if (startmovemqid <= -1)
return;
//为了解决可能出现的并发插入，网络极度延迟可能导致的数据顺序乱掉，起始点再往前追溯1000条
startmovemqid = startmovemqid - 1000;
if (startmovemqid <= 0)
startmovemqid = 1;
//从起始点开始批量扫描
tb_messagequeue_dal dal = new tb_messagequeue_dal(); dal.TableName = fromtablename; var moveMessages = new List<tb_messagequeue_model>();
do
{
SqlHelper.ExcuteSql(this.GetDataNodeConnectString(datanodemodels[partitioninfo.DataNodePartition]), (c) =>
{
moveMessages = dal.GetListMoreThanID(c,1000,startmovemqid);
});
//对每条数据进行逐条迁移
foreach (var message in moveMessages)
{
startmovemqid = Math.Max(startmovemqid, message.id);//起始id自增
if (message.sqlcreatetime.Date > fromdate.Date && message.state == (byte)XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.EnumMessageState.CanRead)
{
SqlHelper.ExcuteSql(this.GetDataNodeConnectString(datanodemodels[partitioninfo.DataNodePartition]), (c) =>
{
tb_messagequeue_dal fromdal = new tb_messagequeue_dal(); fromdal.TableName = fromtablename;
tb_messagequeue_dal todal = new tb_messagequeue_dal(); todal.TableName = currenttablename;
todal.AddMove(c,new tb_messagequeue_model()
{
message = message.message,
state = (byte)XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.EnumMessageState.CanRead,
mqcreatetime=message.mqcreatetime, source=(byte)XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.EnumMessageSource.Moved });//迁移到最新使用表
fromdal.SetState(c, message.id, (byte)XXF.BaseService.MessageQuque.BusinessMQ.SystemRuntime.EnumMessageState.Moved);//原消息设置为已迁移
});
}
}
} while (moveMessages.Count>0);
}
public virtual tb_partition_model CreateModel(DataRow dr)
{
var o = new tb_partition_model();
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if(dr.Table.Columns.Contains("partitionid"))
{
o.partitionid = dr["partitionid"].Toint();
}
//�Ƿ���ʹ��
if(dr.Table.Columns.Contains("isused"))
{
o.isused = dr["isused"].Tobool();
}
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if(dr.Table.Columns.Contains("createtime"))
{
o.createtime = dr["createtime"].ToDateTime();
}
return o;
}
private long StartMoveMQID(string fromtablename, PartitionIDInfo info, Dictionary<int, tb_datanode_model> datanodemodels, tb_partition_model p, DateTime tabletime)
{
long r = -1;
SqlHelper.ExcuteSql(this.GetDataNodeConnectString(datanodemodels[info.DataNodePartition]), (c) =>
{
bool exsit = c.TableIsExist(fromtablename);
if (exsit == true)
{
tb_messagequeue_dal dal = new tb_messagequeue_dal(); dal.TableName = fromtablename;
long maxid = dal.GetMaxID(c); long minid = dal.GetMinID(c);
int findcount = 0;
while (findcount<=30)//二分查找算法,超过30次意味着算法若对，查询过一亿的数据，说明算法有问题
{
findcount++;
KeyValuePair<long, DateTime> mininfo = dal.GetIDCreateTime(c, minid); KeyValuePair<long, DateTime> maxinfo = dal.GetIDCreateTime(c, maxid);
if (mininfo.Value.Date <= tabletime.Date && maxinfo.Value.Date > tabletime.Date)//最小id小于等于当天，最大id>当天，说明中间有数据要迁移
{
var midid = (long)((maxinfo.Key + mininfo.Key) / 2); KeyValuePair<long, DateTime> midinfo = dal.GetIDCreateTime(c, midid);
if (midinfo.Value.Date <= tabletime.Date)//往大的查找
{
minid = midid;
}
else//往小的查找
{
maxid = minid;
}
System.Threading.Thread.Sleep(50);//避免给数据库大的压力
}
else if (mininfo.Value.Date > tabletime.Date)//最小id的时间超过表当天
{
r = mininfo.Key; return;
}
else if (maxinfo.Value.Date <= tabletime.Date)//最大id的时间小于或等同当天
{
r = maxinfo.Key; return;
}
}
if (findcount >= 30)
throw new Exception("二分查找算法错误，查找次数超过30次");
}
});
return r;
}
public List<tb_partition_model> GetClientCreateTime(DbConn conn)
{
try
{
List<tb_partition_model> list = new List<tb_partition_model>();
string sql = @"select partitionid,clientname,tb_consumer_partition.createtime from tb_consumer_partition,[tb_consumer] WITH(NOLOCK)
where [tb_consumer].tempid=tb_consumer_partition.lastconsumertempid";
DataTable dt = conn.SqlToDataTable(sql, null);
if (dt != null && dt.Rows.Count > 0)
{
foreach (DataRow dr in dt.Rows)
{
tb_partition_model model = new tb_partition_model();
model.partitionid = Convert.ToInt32(dr["partitionid"]);
model.createtime = Convert.ToDateTime(dr["createtime"]);
list.Add(model);
}
}
return list;
}
catch (Exception ex)
{
throw ex;
}
}