ldapPrincipalsearcher非常慢

Question

我想从20,000个用户中仅从1个用户获取信息。我在下面使用的方法的响应时间为40秒。该问题的解决方法是什么？

public AuthenticatedUserProperties Info(string Username)
        {
            try
            {
                var context = new PrincipalContext(ContextType.Domain, Settings.LDAPDomain, Settings.LDAPContainer, Settings.LDAPUsername, Settings.LDAPPassword);

                UserPrincipal user = new UserPrincipal(context);
                user.SamAccountName = Username;
                var searcher = new PrincipalSearcher(user);
                var searchResults = searcher.FindOne();
                DirectoryEntry de = searchResults.GetUnderlyingObject() as DirectoryEntry;
                ActiveDirectoryUserProperties prop = ConvertLdapUserPropertyToArray(de);

                return new AuthenticatedUserProperties
                {
                    Status = true,
                    Properties = prop
                };

            }
            catch (Exception e)
            {

                return new AuthenticatedUserProperties
                {
                    Status = false,
                    Properties = null
                };
            }
        }

Answer 1

我改用System.DirectoryServices.Protocols库。它总是在快速燃烧。我永远都无法让System.DirectoryServices.AccountManagement拥有可靠的性能，而获得一个用户的速度通常非常慢（超过10秒）。 TBH-我认为我们的网络设置很可能是造成绑定功能异常的罪魁祸首-但无论我们的网络功能异常如何，Protocols库都能轻松获得良好的结果。

您必须做更多的工作-但没有什么特别困难的。我不是该库的专家-但是此示例代码对我来说确实可靠。

using System.DirectoryServices.Protocols;
public class UserInfo
{
    public string SAMAccountName;
    public string DomainHostName;
    public string ADSDirectory;
    public Dictionary<string, string> UserAttributes;
    // Some attributes not really strings and require extra handling - but simplied for example
    // This is really just for illustrative purposes
    public UserInfo(string a_SAMAccountName, string a_DomainHostName = "ldap.mydomain:3268", string a_ADSDirectory = "ours.net")
    {
        UserAttributes = new Dictionary<string, string>();
        SAMAccountName = a_SAMAccountName;
        DomainHostName = a_DomainHostName;
        ADSDirectory = a_ADSDirectory;
    }
}
public static class GetUserAttributes
{
    public static List<string> WantedAttributes;

    static GetUserAttributes()
    {
        WantedAttributes = new List<string>();
        WantedAttributes.Add("mail");
        //... Add Properties Wanted
    }

    public static void GetUserAttributes(UserInfo a_user)
    {
        using (HostingEnvironment.Impersonate())
        {
            LdapDirectoryIdentifier z_entry = new LdapDirectoryIdentifier(a_user.DomainHostName, true, false);
            using (LdapConnection z_remote = new LdapConnection(z_entry))
            {
                z_remote.SessionOptions.VerifyServerCertificate = delegate (LdapConnection l, X509Certificate c) { return true; };
                z_remote.SessionOptions.ReferralChasing = ReferralChasingOptions.None;
                z_remote.SessionOptions.ProtocolVersion = 3;
                z_remote.Bind();

                SearchRequest z_search = new SearchRequest();
                z_search.Scope = System.DirectoryServices.Protocols.SearchScope.Subtree;
                z_search.Filter = "(SAMAccountName=" + a_user.SAMAccountName + ")";
                z_search.DistinguishedName = a_user.ADSdirectory;

                foreach (List<string> z_item in WantedAttributes)
                {
                    z_search.Attributes.Add(z_item);
                }

                SearchResponse z_response = (SearchResponse)z_remote.SendRequest(z_search);

                if (z_response != null)
                {
                    foreach (SearchResultEntry z_result in z_response.Entries)
                    {
                        foreach (string z_property in z_result.Attributes.AttributeNames)
                        {
                            if (WantedAttributes.ContainsKey(z_property))
                            {
                                DirectoryAttribute z_details = a_result.Attributes[z_property];
                                if (z_details.Count == 1)
                                {
                                    // Special handling required for Attributes that aren't strings objectSid, objectGUID, etc
                                    string z_value = z_details[0].ToString().Trim();
                                    if (!string.IsNullOrWhiteSpace(z_value))
                                    {
                                        a_user.UserAttributes.Add(z_property, z_value);
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}