/// <summary>
/// resume handler
/// </summary>
private void ResumeHandler()
{
while (this.isDisposed == false && this.resumeState == true)
{
Thread.Sleep(this.ResumeCheckInterval * 1000);
//
var resumeCount = 0;
var errorCount = 0;
for (int i = 0, l = this.memberInfos.Length; i < l; i++)
{
var memberInfo = this.memberInfos[i];
if (memberInfo.IsError)
{
errorCount++;
try
{
using (var instance = memberInfo.Member.CreatePoolInstance())
{
memberInfo.IsError = false;
resumeCount++;
}
continue;
}
catch (Exception exception2)
{
//event
this.OnNewInstanceException(memberInfo.Member, exception2);
}
}
}
//当具有成员恢复,并启用HASH时
if (resumeCount > 0 && this.supportHash)
{
var list = new List <MemberInfo>(this.memberInfos.Length);
for (int i = 0, l = this.memberInfos.Length; i < l; i++)
{
if (this.memberInfos[i].IsError == false)
{
list.Add(this.memberInfos[i]);
}
}
if (list.Count > 0)
{
lock (this.lockObject)
{
this.hashing = new ConsistentHashing <MemberInfo>(list.ToArray());
}
}
}
//无异常成员,退出异常检查线程
if (errorCount == 0)
{
lock (this.resumeObject)
{
this.resumeState = false;
}
}
}
}
/// <summary>
/// initialize
/// </summary>
/// <param name="memberInstanceSize"></param>
/// <param name="members"></param>
/// <param name="hash">zero disable hash, non-zero enable</param>
public Pool(int memberInstanceSize, IPoolMember[] members, int hash)
{
this.memberInstanceSize = memberInstanceSize;
this.members = members;
this.memberIndexs = new Dictionary <string, int>(members.Length);
//
this.memberIndex = 0;
this.memberSize = members.Length;
this.memberInfos = new MemberInfo[this.memberSize];
//
this.activeInstanceCount = memberInstanceSize * this.memberSize;
//
this.ResumeCheckInterval = 60;
//
for (int i = 0; i < members.Length; i++)
{
this.memberIndexs.Add(members[i].PoolMemberId, i);
//
this.memberInfos[i] = new MemberInfo()
{
IsError = false,
Index = i,
Member = members[i],
InstanceIndex = 0,
Instances = new InstanceInfo[memberInstanceSize]
};
}
//
this.supportHash = hash > 0 && this.memberSize > 1;
if (this.supportHash)
{
this.hashing = new ConsistentHashing <MemberInfo>(this.memberInfos);
}
}
/// <summary>
/// 获取可用HASH成员
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
private MemberInfo GetActiveHashMember(string key)
{
if (this.memberSize == 1)
{
return(this.memberInfos[0]);
}
if (this.hashing == null)
{
throw new PoolException("Not Enable Hash Get");
}
var member = this.hashing.GetPrimary(key);
//若当前hash成员有异常，则去除去异常成员后重构hash-table
if (member.IsError)
{
var list = new List <MemberInfo>(this.memberInfos.Length);
for (int i = 0, l = this.memberInfos.Length; i < l; i++)
{
if (this.memberInfos[i].IsError == false)
{
list.Add(this.memberInfos[i]);
}
}
if (list.Count == 0)
{
throw new PoolException("No Active Member");
}
this.hashing = new ConsistentHashing <MemberInfo>(list.ToArray());
//嵌套获取
member = this.GetActiveHashMember(key);
}
//if (member.IsError)
//{
// for (int i = 0; i < this.memberSize; i++)
// {
// var index = member.Index + 1;
// if (index == this.memberSize)
// {
// index = 0;
// }
// member = this.memberInfos[index];
// if (!member.IsError)
// {
// return member;
// }
// }
// throw new PoolException("No Active Member");
//}
return(member);
}
