private static bool IsCanOperateCache(AopInfo para)
{
List <string> tables = GetRelationTables(para);
if (tables != null && tables.Count > 0)
{
foreach (string tableName in tables)
{
if (NoCacheTables.Contains(tableName))
{
return(false);
}
string baseKey = GetBaseKey(para, tableName);
string delKey = "DeleteAutoCache:" + baseKey;
if (_MemCache.Contains(delKey))
{
return(false);
}
}
}
return(true);
// string delKey = "DeleteAutoCache:" + baseKey;
// return !_MemCache.Contains(delKey);
//if (baseKey.Contains(".ActionV") || baseKey.Contains(".ProcS"))
//{
// return true;
//}
//TimeSpan ts = DateTime.Now - _MemCache.Get<DateTime>("Del:" + baseKey);
//return ts.TotalSeconds > 6;//5秒内无缓存。
}
public AopResult Begin(AopEnum action, AopInfo aopInfo)
{
Console.WriteLine("开始方法:我已经拦截到用了方法");
AopResult ar = AopResult.Continue;
return(ar);
}
public void End(AopEnum action, AopInfo aopInfo)
{
if (action == AopEnum.Select)
{
Console.WriteLine("结束方法:我已经拦截到用了选择方法");
}
}
private static List <string> GetBaseKeys(AopInfo para, out int flag)
{
flag = 0;//0 正常；1：未识别；2：暂不允许缓存
List <string> baseKeys = new List <string>();
List <string> tables = GetRelationTables(para);
if (tables != null && tables.Count > 0)
{
foreach (string tableName in tables)
{
string baseKey = GetBaseKey(para, tableName);
string delKey = "DeleteAutoCache:" + baseKey;
if (_MemCache.Contains(delKey))
{
//说明此项不可缓存
flag = 2;
baseKeys.Clear();
baseKeys = null;
return(null);
}
baseKeys.Add(baseKey);
}
//tables.Clear();//自己给自己造坑，花了2小时才找到这坑
//tables = null;
}
if (baseKeys.Count == 0)
{
flag = 1;
}
return(baseKeys);
}
public void End(AopEnum action, AopInfo aopInfo)
{
OutMsg("操作结果:" + aopInfo.IsSuccess);
OutMsg("操作表名:" + aopInfo.TableName);
OutMsg("操作参数:" + aopInfo.Where);
OutMsg("----------------操作结束:" + action);
}
public AopResult Begin(AopEnum action, AopInfo aopInfo)
{
try
{
StringBuilder sb = new StringBuilder();
switch (action)
{
case AopEnum.Delete:
sb.AppendFormat("数据被删除,删除条件为：{0}", aopInfo.Where);
break;
}
if (!string.IsNullOrWhiteSpace(sb.ToString()))
{
using (EditLog log = new EditLog())
{
log.TableName = aopInfo.TableName;
log.KeyID = Convert.ToString(aopInfo.Row.PrimaryCell.Value);
log.Content = sb.ToString();
log.UserID = UserAuth.UserID;
log.EditTime = DateTime.Now;
log.Insert(InsertOp.None);
}
}
}
catch (Exception err)
{
Log.WriteLogToTxt("AopError:" + err.Message);
}
return(AopResult.Default);
}
//注意，我把这类库的生成目录指向了Aop_Demo的目录。
//如果路径有误，可以改（项目属性=》生成=》输出路径）
//这样你们就不用手工把生成的MyAopForDemo.dll Copy到 Aop_Demo项目的Debug目录下了
//想让dll自动生成到另一个项目下，最方便是通过项目引用，不过Aop通常都是动态加载，项目之前没有引用关系，这里怕引用误导了大伙。
public AopResult Begin(AopEnum action, AopInfo aopInfo)
{
OutMsg("----------------现在开始操作:" + action);
OutMsg("表名:" + aopInfo.TableName);
OutMsg("Where:" + aopInfo.Where);
return(AopResult.Continue);//让执行继续了，返回有四种状态
}
static bool IsCanRemoveCache(AopEnum action, AopInfo aopInfo)
{
if (IngoreCacheColumns.Count > 0)
{
string databaseName = string.Empty;
if (action == AopEnum.ExeNonQuery)
{
if (aopInfo.IsProc || !aopInfo.ProcName.ToLower().StartsWith("update "))
{
return(true);
}
databaseName = aopInfo.MProc.DataBase;
}
else
{
databaseName = aopInfo.MAction.DataBase;
}
string tableName = aopInfo.TableName;
if (string.IsNullOrEmpty(tableName))
{
List <string> tableNames = SqlFormat.GetTableNamesFromSql(aopInfo.ProcName);
if (tableNames == null || tableNames.Count != 1)//多个表的批量语句也不处理。
{
return(true);
}
tableName = tableNames[0];
}
//获取被更新的字段名，
string[] columns = null;
if (IngoreCacheColumns.ContainsKey(tableName))
{
columns = IngoreCacheColumns[tableName].ToLower().Split(',');
}
else if (IngoreCacheColumns.ContainsKey(databaseName + "." + tableName))
{
columns = IngoreCacheColumns[databaseName + "." + tableName].ToLower().Split(',');
}
if (columns != null) //拿到要忽略的列。
{
List <string> updateColumns = GetChangedColumns(action, aopInfo); //拿到已更新的列
if (columns.Length >= updateColumns.Count)
{
List <string> ignoreColumns = new List <string>(columns.Length);
ignoreColumns.AddRange(columns);
foreach (string item in updateColumns)
{
if (!ignoreColumns.Contains(item))
{
return(true);//只要有一个不存在。
}
}
return(false);//全都不存在
}
}
}
return(true);
}
private static bool IsCanOperateCache(AopEnum action, AopInfo para)
{
if (para.IsTransaction) // 事务中，读数据时，处理读缓存是无法放置共享锁的情况
{
//判断事务等级，如果不是最低等级，则事务的查询不处理缓存
switch (action)//处理查询 动作
{
case AopEnum.Exists:
case AopEnum.Fill:
case AopEnum.GetCount:
case AopEnum.Select:
if (para.MAction.dalHelper.TranLevel != System.Data.IsolationLevel.ReadUncommitted)
{
return(false);
}
break;
case AopEnum.ExeMDataTable:
case AopEnum.ExeMDataTableList:
case AopEnum.ExeScalar:
if (para.MProc.dalHelper.TranLevel != System.Data.IsolationLevel.ReadUncommitted)
{
return(false);
}
break;
}
}
List <string> tables = GetRelationTables(para);
if (tables != null && tables.Count > 0)
{
foreach (string tableName in tables)
{
if (NoCacheTables.Contains(tableName))
{
return(false);
}
string baseKey = GetBaseKey(para, tableName);
string delKey = "DeleteAutoCache:" + baseKey;
if (_MemCache.Contains(delKey))
{
return(false);
}
}
}
return(true);
// string delKey = "DeleteAutoCache:" + baseKey;
// return !_MemCache.Contains(delKey);
//if (baseKey.Contains(".ActionV") || baseKey.Contains(".ProcS"))
//{
// return true;
//}
//TimeSpan ts = DateTime.Now - _MemCache.Get<DateTime>("Del:" + baseKey);
//return ts.TotalSeconds > 6;//5秒内无缓存。
}
private static void SetBaseKeys(AopInfo para, string key, out int flag)
{
List <string> items = GetBaseKeys(para, out flag);
if (items != null && items.Count > 0)
{
foreach (string item in items)
{
SetBaseKey(item, key);
}
items = null;
}
}
private static List <string> GetChangedColumns(AopEnum action, AopInfo aopInfo)
{
List <string> columns = new List <string>();
string expression = string.Empty;
if (action == AopEnum.Update)
{
foreach (MDataCell item in aopInfo.Row)
{
if (item.State == 2 && !item.Struct.IsPrimaryKey)
{
columns.Add(item.ColumnName.ToLower());
}
}
expression = aopInfo.UpdateExpression;
}
else if (action == AopEnum.ExeNonQuery && !aopInfo.IsProc)
{
string sql = aopInfo.ProcName.ToLower();
int setStart = sql.IndexOf(" set ");
int whereEnd = sql.IndexOf(" where ");
if (whereEnd < setStart)
{
expression = sql.Substring(setStart + 5);
}
else
{
expression = sql.Substring(setStart + 5, whereEnd - setStart + 5);
}
}
if (!string.IsNullOrEmpty(expression))
{
string[] items = expression.ToLower().Split(',');
foreach (string item in items)
{
if (item.IndexOf('=') > -1)
{
string column = item.Split('=')[0];
if (!columns.Contains(column))
{
columns.Add(column);
}
}
}
}
return(columns);
}
private static string GetBaseKey(AopInfo para, string tableName)
{
if (string.IsNullOrEmpty(tableName))
{
if (para.MAction != null)
{
foreach (MCellStruct ms in para.MAction.Data.Columns)
{
if (!string.IsNullOrEmpty(ms.TableName))
{
tableName = ms.TableName;
break;
}
}
if (string.IsNullOrEmpty(tableName))
{
if (para.TableName.Contains(" "))
{
tableName = "View_" + TableInfo.GetHashKey(para.TableName);
}
else
{
tableName = para.TableName;
}
//if (para.MAction.Data.Columns.isViewOwner)
//{
// tableName = "ActionV" + Math.Abs(para.TableName.GetHashCode());
//}
}
}
else
{
if (!para.IsProc)
{
tableName = SqlSyntax.Analyze(para.ProcName).TableName;
}
else
{
tableName = "Proc_" + para.ProcName;
}
}
}
return(GetBaseKey(tableName, para.ConnectionString));
}
private static List <string> GetRelationTables(AopInfo para)
{
List <string> tables = null;
if (para.MAction != null)
{
tables = para.MAction.Data.Columns.relationTables;
}
else if (para.MProc != null && !para.IsProc)
{
if (para.Table != null)
{
tables = para.Table.Columns.relationTables;
}
else
{
tables = SqlFormat.GetTableNamesFromSql(para.ProcName);
}
}
return(tables);
}
private static string GetBaseKey(AopInfo para, string tableName)
{
if (string.IsNullOrEmpty(tableName))
{
if (para.MAction != null)
{
if (para.MAction.Data.Columns.isViewOwner)
{
tableName = "ActionV" + para.TableName.GetHashCode();
}
else
{
tableName = para.TableName;
}
}
else
{
tableName = "ProcS" + para.ProcName.GetHashCode();
}
}
return(GetBaseKey(para.DalType, para.DataBase, tableName));
}
private static string GetKey(AopEnum action, AopInfo aopInfo, string baseKey)
{
StringBuilder sb = new StringBuilder();
sb.Append(baseKey);
switch (action)
{
case AopEnum.ExeNonQuery:
case AopEnum.Insert:
case AopEnum.Update:
case AopEnum.Delete:
return(sb.ToString());
}
#region Key1：DBType
sb.Append(".");
sb.Append(action);
if (aopInfo.DBParameters != null && aopInfo.DBParameters.Count > 0)
{
foreach (DbParameter item in aopInfo.DBParameters)
{
sb.Append(item.ParameterName);
sb.Append(item.Value);
}
}
if (aopInfo.CustomDbPara != null)
{
foreach (AopCustomDbPara item in aopInfo.CustomDbPara)
{
sb.Append(item.ParaName);
sb.Append(item.Value);
}
}
if (aopInfo.SelectColumns != null)
{
foreach (object item in aopInfo.SelectColumns)
{
sb.Append(item);
sb.Append(item);
}
}
#endregion
switch (action)
{
case AopEnum.ExeMDataTableList:
case AopEnum.ExeMDataTable:
case AopEnum.ExeScalar:
sb.Append(aopInfo.IsProc);
sb.Append(aopInfo.ProcName);
break;
case AopEnum.Exists:
case AopEnum.Fill:
case AopEnum.GetCount:
sb.Append(aopInfo.Where);
break;
case AopEnum.Select:
sb.Append(aopInfo.PageIndex);
sb.Append(aopInfo.PageSize);
sb.Append(aopInfo.Where);
break;
}
return(StaticTool.GetHashKey(sb.ToString()));
}
private static string GetKey(AopEnum action, AopInfo aopInfo)
{
return(GetKey(action, aopInfo, GetBaseKey(aopInfo)));
}
internal static void SetCache(AopEnum action, AopInfo aopInfo)//End
{
string baseKey = GetBaseKey(aopInfo);
switch (action)
{
case AopEnum.ExeNonQuery:
case AopEnum.Insert:
case AopEnum.Update:
case AopEnum.Delete:
if (aopInfo.IsSuccess || aopInfo.RowCount > 0)
{
ReadyForRemove(baseKey);
}
return;
}
//if (!IsCanOperateCache(baseKey))
//{
// return;
//}
if (_MemCache.CacheType == CacheType.LocalCache && _MemCache.RemainMemoryPercentage < 15)//可用内存低于15%
{
return;
}
string key = GetKey(action, aopInfo, baseKey);
int flag; //0 正常；1：未识别；2：不允许缓存
SetBaseKeys(aopInfo, key, out flag); //存档Key，后续缓存失效 批量删除
if (flag == 2)
{
return; //
}
double cacheTime = Math.Abs(12 - DateTime.Now.Hour) * 60 + DateTime.Now.Second; //缓存中午或到夜里1点
if (flag == 1 || aopInfo.PageIndex > 2) // 后面的页数，缓存时间可以短一些
{
cacheTime = 2; //未知道操作何表时，只缓存2分钟（比如存储过程等语句）
}
switch (action)
{
case AopEnum.ExeMDataTableList:
if (IsCanCache(aopInfo.TableList))
{
JsonHelper js = new JsonHelper(false, false);
foreach (MDataTable table in aopInfo.TableList)
{
js.Add(Guid.NewGuid().ToString(), table.ToJson(true, true, RowOp.IgnoreNull));
}
js.AddBr();
_MemCache.Set(key, js.ToString(), cacheTime);
}
break;
case AopEnum.Select:
case AopEnum.ExeMDataTable:
if (IsCanCache(aopInfo.Table))
{
_MemCache.Set(key, aopInfo.Table.ToJson(true, true, RowOp.IgnoreNull), cacheTime);
}
break;
case AopEnum.ExeScalar:
_MemCache.Set(key, aopInfo.ExeResult, cacheTime);
break;
case AopEnum.Fill:
_MemCache.Set(key, aopInfo.Row, cacheTime);
break;
case AopEnum.GetCount:
_MemCache.Set(key, aopInfo.RowCount, cacheTime);
break;
}
}
private static string GetBaseKey(AopInfo para)
{
return(GetBaseKey(para, null));
}
internal static void SetCache(AopEnum action, AopInfo aopInfo)//End
{
if (!IsCanOperateCache(aopInfo))
{
return;
}
string baseKey = GetBaseKey(aopInfo);
switch (action)
{
case AopEnum.ExeNonQuery:
case AopEnum.Insert:
case AopEnum.Update:
case AopEnum.Delete:
if (aopInfo.IsSuccess || aopInfo.RowCount > 0)
{
if (action == AopEnum.Update || action == AopEnum.ExeNonQuery)
{
//检测是否指定忽略的列名（多数据库的指定？{XXX.XXX}）
if (!IsCanRemoveCache(action, aopInfo))
{
return;
}
}
ReadyForRemove(baseKey);
}
return;
}
if (_MemCache.CacheType == CacheType.LocalCache && _MemCache.Count > 5000000)//数量超过500万
{
return;
}
string key = GetKey(action, aopInfo, baseKey);
int flag; //0 正常；1：未识别；2：不允许缓存
SetBaseKeys(aopInfo, key, out flag); //存档Key，后续缓存失效 批量删除
if (flag == 2)
{
return; //
}
double cacheTime = AppConfig.Cache.DefaultCacheTime; // Math.Abs(12 - DateTime.Now.Hour) * 60 + DateTime.Now.Second;//缓存中午或到夜里1点
if (flag == 1 || aopInfo.PageIndex > 2) // 后面的页数，缓存时间可以短一些
{
cacheTime = 2; //未知道操作何表时，只缓存2分钟（比如存储过程等语句）
}
switch (action)
{
case AopEnum.ExeMDataTableList:
if (IsCanCache(aopInfo.TableList))
{
JsonHelper js = new JsonHelper(false, false);
foreach (MDataTable table in aopInfo.TableList)
{
js.Add(Guid.NewGuid().ToString(), table.ToJson(true, true, RowOp.IgnoreNull, false, EscapeOp.No));
}
js.AddBr();
_MemCache.Set(key, js.ToString(), cacheTime);
}
break;
case AopEnum.Select:
case AopEnum.ExeMDataTable:
if (IsCanCache(aopInfo.Table))
{
_MemCache.Set(key, aopInfo.Table.ToJson(true, true, RowOp.IgnoreNull, false, EscapeOp.No), cacheTime);
}
break;
case AopEnum.ExeScalar:
_MemCache.Set(key, aopInfo.ExeResult, cacheTime);
break;
case AopEnum.Fill:
_MemCache.Set(key, aopInfo.Row.Clone(), cacheTime);
break;
case AopEnum.GetCount:
_MemCache.Set(key, aopInfo.RowCount, cacheTime);
break;
case AopEnum.Exists:
_MemCache.Set(key, aopInfo.ExeResult, cacheTime);
break;
}
}
private static CacheManage _MemCache = CacheManage.Instance; //有可能使用MemCache操作
internal static bool GetCache(AopEnum action, AopInfo aopInfo) //Begin
{
switch (action)
{
case AopEnum.ExeNonQuery:
case AopEnum.Insert:
case AopEnum.Update:
case AopEnum.Delete:
return(false);
}
if (!IsCanOperateCache(aopInfo))
{
return(false);
}
string baseKey = GetBaseKey(aopInfo);
//查看是否通知我移除
string key = GetKey(action, aopInfo, baseKey);
object obj = _MemCache.Get(key);
switch (action)
{
case AopEnum.ExeMDataTableList:
if (obj != null)
{
List <MDataTable> list = new List <MDataTable>();
Dictionary <string, string> jd = JsonHelper.Split(obj.ToString());
if (jd != null && jd.Count > 0)
{
foreach (KeyValuePair <string, string> item in jd)
{
list.Add(MDataTable.CreateFrom(item.Value));
}
}
aopInfo.TableList = list;
}
break;
case AopEnum.Select:
case AopEnum.ExeMDataTable:
if (obj != null)
{
aopInfo.Table = MDataTable.CreateFrom(obj.ToString());
}
break;
case AopEnum.ExeScalar:
if (obj != null)
{
aopInfo.ExeResult = obj;
}
break;
case AopEnum.Fill:
if (obj != null)
{
MDataRow row = obj as MDataRow;
if (_MemCache.CacheType == CacheType.LocalCache)
{
row = row.Clone();
}
aopInfo.Row = row;
aopInfo.IsSuccess = true;
}
break;
case AopEnum.GetCount:
if (obj != null)
{
aopInfo.RowCount = int.Parse(obj.ToString());
}
break;
case AopEnum.Exists:
if (obj != null)
{
aopInfo.ExeResult = obj;
}
break;
}
baseKey = key = null;
return(obj != null);
}
public void End(AopEnum action, AopInfo aopInfo)
{
}
//private static List<string> _CacheTables = null;
//internal static List<string> CacheTables
//{
// get
// {
// if (_CacheTables == null)
// {
// _CacheTables = new List<string>();
// string tables = AppConfig.Cache.CacheTables.ToLower();
// if (!string.IsNullOrEmpty(tables))
// {
// _CacheTables.AddRange(tables.Split(','));
// }
// }
// return _CacheTables;
// }
// set
// {
// _CacheTables = value;
// }
//}
//private static List<string> _NoCacheTables = null;
//internal static List<string> NoCacheTables
//{
// get
// {
// if (_NoCacheTables == null)
// {
// _NoCacheTables = new List<string>();
// string tables = AppConfig.Cache.NoCacheTables.ToLower();
// if (!string.IsNullOrEmpty(tables))
// {
// _NoCacheTables.AddRange(tables.Split(','));
// }
// }
// return _NoCacheTables;
// }
// set
// {
// _NoCacheTables = value;
// }
//}
private static bool IsCanOperateCache(AopEnum action, AopInfo para)
{
if (para.IsTransaction) // 事务中，读数据时，处理读缓存是无法放置共享锁的情况
{
//判断事务等级，如果不是最低等级，则事务的查询不处理缓存
switch (action)//处理查询 动作
{
case AopEnum.Exists:
case AopEnum.Fill:
case AopEnum.GetCount:
case AopEnum.Select:
case AopEnum.SelectList:
if (para.MAction.dalHelper.TranLevel != System.Data.IsolationLevel.ReadUncommitted)
{
return(false);
}
break;
case AopEnum.ExeMDataTable:
case AopEnum.ExeMDataTableList:
case AopEnum.ExeScalar:
case AopEnum.ExeList:
if (para.MProc.dalHelper.TranLevel != System.Data.IsolationLevel.ReadUncommitted)
{
return(false);
}
break;
}
}
List <string> tables = GetRelationTables(para);
if (tables != null && tables.Count > 0)
{
string cacheTables = "," + AppConfig.Cache.CacheTables + ",";//demo.Aa
string nNoCacheTables = "," + AppConfig.Cache.NoCacheTables + ",";
foreach (string tableName in tables)
{
if (cacheTables.Length > 2)
{
if (cacheTables.IndexOf("," + tableName + ",", StringComparison.OrdinalIgnoreCase) == -1 &&
cacheTables.IndexOf(para.DataBase + "." + tableName + ",", StringComparison.OrdinalIgnoreCase) == -1)
{
return(false);
}
}
else if (nNoCacheTables.Length > 2)
{
if (nNoCacheTables.IndexOf("," + tableName + ",", StringComparison.OrdinalIgnoreCase) > -1 ||
nNoCacheTables.IndexOf(para.DataBase + "." + tableName + ",", StringComparison.OrdinalIgnoreCase) > -1)
{
return(false);
}
}
string baseKey = GetBaseKey(para, tableName);
string delKey = "DeleteAutoCache:" + baseKey;
if (_AutoCache.Contains(delKey))
{
return(false);
}
}
}
return(true);
// string delKey = "DeleteAutoCache:" + baseKey;
// return !_MemCache.Contains(delKey);
//if (baseKey.Contains(".ActionV") || baseKey.Contains(".ProcS"))
//{
// return true;
//}
//TimeSpan ts = DateTime.Now - _MemCache.Get<DateTime>("Del:" + baseKey);
//return ts.TotalSeconds > 6;//5秒内无缓存。
}