public List <EventLogRecord> Retrieve()
{
List <EventLogRecord> records = new List <EventLogRecord>();
WMIRetrieverOptions options = new WMIRetrieverOptions();
WMIRetriever retriever = new WMIRetriever(Context, options);
Stopwatch watch = Stopwatch.StartNew();
WMIRetriever.RetrievalContext retrieval_context = retriever.Retrieve(null);
long retrieval = watch.ElapsedMilliseconds;
watch.Restart();
if (retrieval_context != null)
{
lock (retrieval_context.RetrievedData)
{
retrieval_context.RetrievedData.ForEach(r =>
{
try
{
records.Add(new EventLogRecord(r));
}
catch (Exception)
{
}
});
}
}
//ApplicationEventLog log = new ApplicationEventLog();
//log.LogInformation($"GenericEventLogCollector: retrieval took {retrieval} ms and building list took {watch.ElapsedMilliseconds} ms for {records.Count} records");
return(records);
}
protected virtual void OnAcquireDelegate(OnProperty on_property)
{
WMIRetriever retriever = new WMIRetriever(WmiContext, RetrieverOptions);
WMIRetriever.RetrievalContext retrieval_context = retriever.Retrieve(m_log);
if (retrieval_context != null)
{
retrieval_context.RetrievedData.ForEach(r => on_property(r));
}
}
public override CollectedData OnAcquire()
{
// The number of cores will be different for each of the devices that we monitor, so we have to get this
// inside each RunningProcessesData object, not globally. But at least it won't change so we can just get it once.
if (m_cores == 0)
{
WMIRetriever retriever = new WMIRetriever(new WMIContext("Win32_Processor", "NumberOfCores", WmiContext.RemoteInfo), new WMIRetrieverOptions());
WMIRetriever.RetrievalContext retrieval_context = retriever.Retrieve(null);
if (retrieval_context != null && retrieval_context.RetrievedData.Count > 0)
{
Dictionary <string, object> r = retrieval_context.RetrievedData[0];
uint.TryParse(r["NumberOfCores"].ToString(), out m_cores);
}
}
if (m_cores == 0)
{
throw new Exception("Unable to determine the # of cores on the machine");
}
Dictionary <string, Process> collected_data = new Dictionary <string, Process>();
// We do this twice...I found that sometimes the first time we'd try and get the data we'd get nothing,
// but the second attempt would work. Go figure.
OnAcquireDelegate(dict => { });
OnAcquireDelegate(
dict =>
{
string name = dict["Name"].ToString();
string percent_processor_time = dict["PercentProcessorTime"].ToString();
string working_set = dict["WorkingSet"].ToString();
string working_set_private = dict["WorkingSetPrivate"].ToString();
string pool_nonpaged_bytes = dict["PoolNonpagedBytes"].ToString();
string pool_paged_bytes = dict["PoolPagedBytes"].ToString();
string private_bytes = dict["PrivateBytes"].ToString();
if (!ulong.TryParse(percent_processor_time, out ulong cpu) ||
!ulong.TryParse(working_set, out ulong set) ||
!ulong.TryParse(working_set_private, out ulong set_private) ||
!ulong.TryParse(pool_nonpaged_bytes, out ulong pool_nonpaged) ||
!ulong.TryParse(pool_paged_bytes, out ulong pool_paged) ||
!ulong.TryParse(private_bytes, out ulong priv) ||
string.Compare(name, "_Total", true) == 0 ||
string.Compare(name, "Idle", true) == 0)
{
return;
}
// Sometimes an app will have multiple parts to it. For example,
// Chrome will often report chrome, chrome#1, chrome#2, chrome#3, etc.
// This is to combine all of those together into a single 'chrome' report.
// We sum up the percentages, which I think is OK.
Match m = m_process_suffix.Match(name);
if (m.Success)
{
name = m.Groups[1].Value;
if (collected_data.TryGetValue(name, out Process p))
{
p.Add(cpu, set, set_private, pool_nonpaged, pool_paged, priv);
}
else
{
collected_data[name] = new Process(name, cpu, set, set_private, pool_nonpaged, pool_paged, priv);
}
}
else
{
collected_data[name] = new Process(name, cpu, set, set_private, pool_nonpaged, pool_paged, priv);
}
}
);
// Package the process information into a single Data object that contains a double-dictionary. The dictionary will contain
// a mapping from process name to process information, and the process information is itself a dictionary mapping a string
// ("Memory", "CPU") to the number representing that.
GenericDictionaryData <Process> d = new GenericDictionaryData <Process>(Context);
foreach (KeyValuePair <string, Process> process in collected_data)
{
Process p = process.Value;
// The percentage is based on the capacity of a single core, so we have to divide by the # of cores
// to get the overall capacity.
ulong percent = (ulong)((double)p.CPUNum / (double)m_cores + 0.5f);
p.CPUNum = percent;
d.Data[p.Name] = p;
}
return(new CollectedData(Context, d.Data.Count > 0, d));
}
