public static ConnectionOptions GetConnectOptions(string machineName, WMIPollingSettings wps)
{
var co = new ConnectionOptions();
if (machineName == Environment.MachineName)
{
return(co);
}
switch (machineName)
{
case "localhost":
case "127.0.0.1":
return(co);
default:
co = new ConnectionOptions
{
Authentication = AuthenticationLevel.Packet,
Timeout = new TimeSpan(0, 0, 30),
EnablePrivileges = true,
};
break;
}
if (wps != null && !string.IsNullOrWhiteSpace(wps.AuthUser) && !string.IsNullOrWhiteSpace(wps.AuthPassword))
{
co.Username = wps.AuthUser;
co.Password = wps.AuthPassword;
}
if (wps != null && wps.QueryTimeout != default(int))
{
co.Timeout = new TimeSpan(0, 0, wps.QueryTimeout);
}
return(co);
}
public static ManagementScope GetManagementScope(string machineName, WMIPollingSettings wps)
{
if (!ManagementScopes.ContainsKey(machineName.ToLower()))
{
var newScope = new ManagementScope(string.Format(@"\\{0}\root\cimv2", machineName), GetConnectOptions(machineName, wps));
ManagementScopes.TryAdd(machineName.ToLower(), newScope);
}
return(ManagementScopes[machineName.ToLower()]);
}
public static QueryResult <T> Query <T>(string machineName, WMIPollingSettings wps, string query, Func <IEnumerable <ManagementObject>, IEnumerable <T> > conversion)
{
var timer = Stopwatch.StartNew();
var scope = GetManagementScope(machineName, wps);
var searcher = GetManagementObjectSearcher(machineName, query, scope);
using (var results = searcher.Get())
{
var queryResults = results.Cast <ManagementObject>();
timer.Stop();
return(new QueryResult <T>
{
Duration = timer.Elapsed,
Data = conversion(queryResults).ToList()
});
}
}
