public void Pause() // deconstructor (really a pauser) of a Monitor class instance
{
running = false;
lock (sessionLock)
{
// stops TraceEvent session so events aren't being tracked
session.Stop();
}
// sends an HTTP request with the data stored before pausing monitor
// creates object that will store all event instances
Metric_List list = new Metric_List();
lock (lockObject)
{
list.session = instance;
list.cpu = CPUVals;
list.mem = MemVals;
list.exceptions = ExceptionVals;
list.requests = RequestVals;
list.contentions = ContentionVals;
list.gc = GCVals;
list.jit = JitVals;
// creates new pointers for metric value collections
CPUVals = new List <CPU_Usage>();
MemVals = new List <Mem_Usage>();
ExceptionVals = new List <Exceptions>();
RequestVals = new List <Http_Request>();
ContentionVals = new List <Contention>();
GCVals = new List <GC>();
JitVals = new List <Jit>();
}
String output;
try
{
output = JsonConvert.SerializeObject(list);
// escapes string so that JSON object is interpreted as a single string
output = JsonConvert.ToString(output);
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, "api/v1/General");
request.Content = new StringContent(output, System.Text.Encoding.UTF8, "application/json");
// sends POST request to server, containing JSON representation of events
try
{
HttpResponseMessage response = client.SendAsync(request).Result;
}
catch { }
}
catch { }
}
/*
* METHOD DECLARATION BLOCK
*/
public void Record() // sets timer that calls Collect every five seconds
{
// sets base address for HTTP requests - won't be hard-coded in future
client.BaseAddress = new Uri("http://10.83.46.226:54022/");
// assign all properties of the current process to the Session class instance
instance.process = (this.process);
instance.sampleRate = sampleRate;
instance.sendRate = sendRate;
instance.processorCount = processorTotal;
instance.os = myOS;
instance.application = app;
// starts event collection via TraceEvent in separate task if necessary
if (ContentionEnabled == 1 | ExceptionEnabled == 1 | GCEnabled == 1 | HttpEnabled == 1 | JitEnabled == 1)
{
Task.Factory.StartNew(() =>
{
TraceEvents();
});
}
// begins loop that samples CPU/mem and issues HTTP requests in separate task
Task.Factory.StartNew(async() =>
{
timer.Start();
while (true)
{
if (CPUEnabled == 1)
{
FetchCPU();
}
if (MemEnabled == 1)
{
FetchMem();
}
// if specified time has passed since HTTP request was made
if (timer.ElapsedMilliseconds >= sendRate)
{
timer.Restart();
// creates object that will store all event instances
Metric_List list = new Metric_List();
lock (lockObject)
{
list.session = instance;
list.cpu = CPUVals;
list.mem = MemVals;
list.exceptions = ExceptionVals;
list.requests = RequestVals;
list.contentions = ContentionVals;
list.gc = GCVals;
list.jit = JitVals;
// creates new pointers for metric value collections
CPUVals = new List <CPU_Usage>();
MemVals = new List <Mem_Usage>();
ExceptionVals = new List <Exceptions>();
RequestVals = new List <Http_Request>();
ContentionVals = new List <Contention>();
GCVals = new List <GC>();
JitVals = new List <Jit>();
}
// starts measurement of HTTP request duration for adjustment to task delay
duration.Start();
hold = 1;
String output;
try
{
output = JsonConvert.SerializeObject(list);
// escapes string so that JSON object is interpreted as a single string
output = JsonConvert.ToString(output);
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, "api/v1/General");
request.Content = new StringContent(output, System.Text.Encoding.UTF8, "application/json");
// sends POST request to server, containing JSON representation of events
try
{
HttpResponseMessage response = client.SendAsync(request).Result;
}
catch { }
}
catch { }
hold = 0;
// if HTTP request took longer than sampling rate, skip delay to minizime data loss
// else, delay for difference between desired sampling rate and duration of request
if (sampleRate < duration.ElapsedMilliseconds)
{
duration.Reset();
}
else
{
await Task.Delay(sampleRate - (int)duration.ElapsedMilliseconds);
duration.Reset();
}
}
else // delay for the amount of time between samples if request wasn't sent
{
await Task.Delay(sampleRate);
}
}
});
}
