using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Xml.Serialization;
using NewLife;
using NewLife.Data;
using Stardust.Data.Models;
using XCode;
using XCode.Membership;
namespace Stardust.Data.Nodes
{
/// <summary>Redis数据。Redis监控</summary>
public partial class RedisData : Entity<RedisData>
{
#region 对象操作
static RedisData()
{
// 累加字段，生成 Update xx Set Count=Count+1234 Where xxx
//var df = Meta.Factory.AdditionalFields;
//df.Add(nameof(RedisId));
// 过滤器 UserModule、TimeModule、IPModule
Meta.Modules.Add<TimeModule>();
Meta.Modules.Add<IPModule>();
}
/// <summary>验证并修补数据，通过抛出异常的方式提示验证失败。</summary>
/// <param name="isNew">是否插入</param>
public override void Valid(Boolean isNew)
{
// 如果没有脏数据，则不需要进行任何处理
if (!HasDirty) return;
// 建议先调用基类方法，基类方法会做一些统一处理
base.Valid(isNew);
// 在新插入数据或者修改了指定字段时进行修正
//if (isNew && !Dirtys[nameof(CreateTime)]) CreateTime = DateTime.Now;
//if (isNew && !Dirtys[nameof(CreateIP)]) CreateIP = ManageProvider.UserHost;
}
///// <summary>首次连接数据库时初始化数据，仅用于实体类重载，用户不应该调用该方法</summary>
//[EditorBrowsable(EditorBrowsableState.Never)]
//protected override void InitData()
//{
// // InitData一般用于当数据表没有数据时添加一些默认数据，该实体类的任何第一次数据库操作都会触发该方法，默认异步调用
// if (Meta.Session.Count > 0) return;
// if (XTrace.Debug) XTrace.WriteLine("开始初始化RedisData[Redis数据]数据……");
// var entity = new RedisData();
// entity.Id = 0;
// entity.RedisId = 0;
// entity.Name = "abc";
// entity.Speed = 0;
// entity.InputKbps = 0;
// entity.OutputKbps = 0;
// entity.Uptime = 0;
// entity.ConnectedClients = 0;
// entity.UsedMemory = 0;
// entity.FragmentationRatio = 0.0;
// entity.Keys = 0;
// entity.ExpiredKeys = 0;
// entity.EvictedKeys = 0;
// entity.KeySpaceHits = 0;
// entity.KeySpaceMisses = 0;
// entity.Commands = 0;
// entity.Reads = 0;
// entity.Writes = 0;
// entity.AvgTtl = 0;
// entity.TopCommand = "abc";
// entity.Db0Keys = 0;
// entity.Db0Expires = 0;
// entity.Db1Keys = 0;
// entity.Db1Expires = 0;
// entity.Db2Keys = 0;
// entity.Db2Expires = 0;
// entity.Db3Keys = 0;
// entity.Db3Expires = 0;
// entity.CreateTime = DateTime.Now;
// entity.CreateIP = "abc";
// entity.Remark = "abc";
// entity.Insert();
// if (XTrace.Debug) XTrace.WriteLine("完成初始化RedisData[Redis数据]数据！");
//}
///// <summary>已重载。基类先调用Valid(true)验证数据，然后在事务保护内调用OnInsert</summary>
///// <returns></returns>
//public override Int32 Insert()
//{
// return base.Insert();
//}
///// <summary>已重载。在事务保护范围内处理业务，位于Valid之后</summary>
///// <returns></returns>
//protected override Int32 OnDelete()
//{
// return base.OnDelete();
//}
#endregion
#region 扩展属性
/// <summary>节点</summary>
[XmlIgnore, IgnoreDataMember]
public RedisNode Redis => Extends.Get(nameof(Redis), k => RedisNode.FindById(RedisId));
/// <summary>节点</summary>
[XmlIgnore, IgnoreDataMember]
[Map(nameof(RedisId), typeof(RedisNode), "Id")]
public String RedisName => Redis?.Name;
/// <summary>开机时间</summary>
[Map(nameof(Uptime))]
public String UptimeName => TimeSpan.FromSeconds(Uptime).ToString().TrimEnd("0000").TrimStart("00:");
/// <summary>平均存活时间</summary>
[Map(nameof(AvgTtl))]
public String AvgTtlName => TimeSpan.FromMilliseconds(AvgTtl).ToString().TrimEnd("0000").TrimStart("00:");
#endregion
#region 扩展查询
/// <summary>根据编号查找</summary>
/// <param name="id">编号</param>
/// <returns>实体对象</returns>
public static RedisData FindById(Int64 id)
{
if (id <= 0) return null;
// 实体缓存
if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.Id == id);
// 单对象缓存
return Meta.SingleCache[id];
//return Find(_.Id == id);
}
/// <summary>根据Redis节点、编号查找</summary>
/// <param name="redisId">Redis节点</param>
/// <param name="id">编号</param>
/// <returns>实体列表</returns>
public static IList<RedisData> FindAllByRedisIdAndId(Int32 redisId, Int64 id)
{
// 实体缓存
if (Meta.Session.Count < 1000) return Meta.Cache.FindAll(e => e.RedisId == redisId && e.Id == id);
return FindAll(_.RedisId == redisId & _.Id == id);
}
/// <summary>获取最后一条Redis数据</summary>
/// <param name="redisId"></param>
/// <returns></returns>
public static RedisData FindLast(Int32 redisId)
{
if (redisId <= 0) return null;
return FindAll(_.RedisId == redisId, _.Id.Desc(), null, 0, 1).FirstOrDefault();
}
#endregion
#region 高级查询
/// <summary>高级查询</summary>
/// <param name="redisId">Redis节点</param>
/// <param name="start">更新时间开始</param>
/// <param name="end">更新时间结束</param>
/// <param name="key">关键字</param>
/// <param name="page">分页参数信息。可携带统计和数据权限扩展查询等信息</param>
/// <returns>实体列表</returns>
public static IList<RedisData> Search(Int32 redisId, DateTime start, DateTime end, String key, PageParameter page)
{
var exp = new WhereExpression();
if (redisId >= 0) exp &= _.RedisId == redisId;
if (!key.IsNullOrEmpty()) exp &= _.Name.Contains(key) | _.TopCommand.Contains(key) | _.Remark.Contains(key);
exp &= _.Id.Between(start, end, Meta.Factory.Snow);
return FindAll(exp, page);
}
// Select Count(Id) as Id,Category From RedisData Where CreateTime>'2020-01-24 00:00:00' Group By Category Order By Id Desc limit 20
//static readonly FieldCache<RedisData> _CategoryCache = new FieldCache<RedisData>(nameof(Category))
//{
//Where = _.CreateTime > DateTime.Today.AddDays(-30) & Expression.Empty
//};
///// <summary>获取类别列表，字段缓存10分钟，分组统计数据最多的前20种，用于魔方前台下拉选择</summary>
///// <returns></returns>
//public static IDictionary<String, String> GetCategoryList() => _CategoryCache.FindAllName();
#endregion
#region 业务操作
/// <summary>从Redis信息填充字段</summary>
/// <param name="inf"></param>
public RedisDbEntry[] Fill(IDictionary<String, String> inf)
{
Speed = inf["instantaneous_ops_per_sec"].ToInt();
InputKbps = inf["instantaneous_input_kbps"].ToDouble();
OutputKbps = inf["instantaneous_output_kbps"].ToDouble();
Uptime = inf["uptime_in_seconds"].ToInt();
ConnectedClients = inf["connected_clients"].ToInt();
UsedMemory = (Int32)(inf["used_memory_rss"].ToLong() / 1024 / 1024);
FragmentationRatio = inf["mem_fragmentation_ratio"].ToDouble();
ExpiredKeys = inf["expired_keys"].ToLong();
EvictedKeys = inf["evicted_keys"].ToLong();
KeySpaceHits = inf["keyspace_hits"].ToLong();
KeySpaceMisses = inf["keyspace_misses"].ToLong();
Commands = inf["total_commands_processed"].ToLong();
Reads = inf["total_reads_processed"].ToLong();
Writes = inf["total_writes_processed"].ToLong();
// 命令统计。cmdstat_lpush:calls=40,usec=816,usec_per_call=20.40
var cmds = inf.Where(e => e.Key.StartsWith("cmdstat_")).ToDictionary(e => e.Key.TrimStart("cmdstat_"), e => e.Value);
if (cmds.Count > 0)
{
var dic = cmds.ToDictionary(e => e.Key, e => e.Value.Substring("calls=", ",").ToInt());
var kv = dic.OrderByDescending(e => e.Value).First();
TopCommand = $"{kv.Key}:{cmds[kv.Key]}";
}
// key统计
var dbs = new RedisDbEntry[16];
var sb = new StringBuilder();
for (var i = 0; i < dbs.Length; i++)
{
if (inf.TryGetValue($"db{i}", out var db))
{
var dic = db.SplitAsDictionary("=", ",");
dbs[i] = new RedisDbEntry
{
Keys = dic["keys"].ToInt(),
Expires = dic["expires"].ToInt(),
AvgTtl = dic["avg_ttl"].ToInt(),
};
sb.AppendLine($"db{i}:{db}");
}
}
var dbs2 = dbs.Where(e => e != null).ToArray();
Keys = dbs2.Sum(e => e.Keys);
if (Keys > 0) AvgTtl = (Int32)(dbs2.Sum(e => (Int64)e.Keys * e.AvgTtl) / Keys);
//if (dbs[0] != null)
//{
// Db0Keys = dbs[0].Keys;
// Db0Expires = dbs[0].Expires;
//}
//if (dbs[1] != null)
//{
// Db1Keys = dbs[1].Keys;
// Db1Expires = dbs[1].Expires;
//}
//if (dbs[2] != null)
//{
// Db2Keys = dbs[2].Keys;
// Db2Expires = dbs[2].Expires;
//}
//if (dbs[3] != null)
//{
// Db3Keys = dbs[3].Keys;
// Db3Expires = dbs[3].Expires;
//}
Remark = sb.ToString().Trim();
return dbs;
}
/// <summary>删除指定日期之前的数据</summary>
/// <param name="date"></param>
/// <returns></returns>
public static Int32 DeleteBefore(DateTime date) => Delete(_.Id < Meta.Factory.Snow.GetId(date));
#endregion
}
}
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