public async Task <StoreGroupMember> ChooseMember(StoreGroup group, params string[] keys)
{
//需要在HashGroup中存在名称为StoreFroup-{group.Name}的哈希组
string hashGroupName = $"StoreFroup-{group.Name}";
var hashGroup = await _hashGroupRepositoryCacheProxy.QueryByName(hashGroupName);
if (group == null)
{
var fragment = new TextFragment()
{
Code = TextCodes.NotFoundHashGroupByName,
DefaultFormatting = "没有找到名称为{0}的一致性哈希组",
ReplaceParameters = new List <object>()
{
hashGroupName
}
};
throw new UtilityException((int)Errors.NotFoundHashGroupByName, fragment);
}
//从哈希组获取实际节点信息，节点信息为MemberName
var memberName = await hashGroup.GetHashNodeKey(string.Join(".", keys), 1, 2, 3);
var member = await getMember(group.ID, memberName);
if (member == null)
{
var fragment = new TextFragment()
{
Code = TextCodes.NotFounStoreGroupMemberByName,
DefaultFormatting = "在id为{0}的存储组中找不到名称为{1}的组成员",
ReplaceParameters = new List <object>()
{
group.ID.ToString(), memberName
}
};
throw new UtilityException((int)Errors.NotFounStoreGroupMemberByName, fragment);
}
return(member);
}
public async Task <StoreGroupMember> GetMember(StoreGroup group, string memberName)
{
var member = await getMember(group.ID, memberName);
return(member);
}