private async Task <AzureInstanceComputeMetadata> MakeAzureMetadataRequestAsync(string metadataRequestUrl)
{
AzureInstanceComputeMetadata requestResult = null;
SdkInternalOperationsMonitor.Enter();
try
{
if (this.azureIMSRequestor != null)
{
requestResult = await this.azureIMSRequestor(metadataRequestUrl).ConfigureAwait(false);
}
else
{
requestResult = await this.MakeWebRequestAsync(metadataRequestUrl).ConfigureAwait(false);
}
}
catch (Exception ex)
{
WindowsServerEventSource.Log.AzureInstanceMetadataRequestFailure(
metadataRequestUrl, ex.Message, ex.InnerException != null ? ex.InnerException.Message : string.Empty);
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
return(requestResult);
}
/// <summary>
/// Retrieves the app id given the instrumentation key.
/// </summary>
/// <param name="instrumentationKey">Instrumentation key for which app id is to be retrieved.</param>
/// <returns>App id.</returns>
private async Task <string> FetchAppIdFromService(string instrumentationKey)
{
try
{
#if !NETCORE
SdkInternalOperationsMonitor.Enter();
#endif
Uri appIdEndpoint = this.GetAppIdEndPointUri(instrumentationKey);
#if !NETCORE
WebRequest request = WebRequest.Create(appIdEndpoint);
request.Method = "GET";
using (HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync().ConfigureAwait(false))
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
return(await reader.ReadToEndAsync());
}
#else
using (HttpClient client = new HttpClient())
{
return(await client.GetStringAsync(appIdEndpoint).ConfigureAwait(false));
}
#endif
}
finally
{
#if !NETCORE
SdkInternalOperationsMonitor.Exit();
#endif
}
}
/// <summary>
/// Retrieves the app id given the instrumentation key.
/// </summary>
/// <param name="instrumentationKey">Instrumentation key for which app id is to be retrieved.</param>
/// <returns>App id.</returns>
private Task <string> FetchAppIdFromService(string instrumentationKey)
{
return(Task.Factory.StartNew(() =>
{
try
{
SdkInternalOperationsMonitor.Enter();
Uri appIdEndpoint = this.GetAppIdEndPointUri(instrumentationKey);
WebRequest request = WebRequest.Create(appIdEndpoint);
request.Method = "GET";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
return reader.ReadToEnd();
}
}
}
catch (Exception ex)
{
AppMapCorrelationEventSource.Log.FetchAppIdFailed(this.GetExceptionDetailString(ex));
return null;
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}));
}
/// <summary>
/// Flushes the in-memory buffer and sends the telemetry items in <see cref="sendingInterval"/> intervals or when
/// <see cref="startRunnerEvent" /> is set.
/// </summary>
private void Runner()
{
#if !NETSTANDARD1_3
SdkInternalOperationsMonitor.Enter();
try
{
#endif
using (this.startRunnerEvent = new AutoResetEvent(false))
{
while (this.enabled)
{
// Pulling all items from the buffer and sending as one transmission.
this.DequeueAndSend(timeout: default(TimeSpan)); // when default(TimeSpan) is provided, value is ignored and default timeout of 100 sec is used
// Waiting for the flush delay to elapse
this.startRunnerEvent.WaitOne(this.sendingInterval);
}
}
#if !NETSTANDARD1_3
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
#endif
}
/// <summary>
/// Retrieves the app id given the instrumentation key.
/// </summary>
/// <param name="instrumentationKey">Instrumentation key for which app id is to be retrieved.</param>
/// <returns>App id.</returns>
private Task <string> FetchAppIdFromService(string instrumentationKey)
{
return(Task.Factory.StartNew(() =>
{
try
{
SdkInternalOperationsMonitor.Enter();
Uri appIdEndpoint = this.GetAppIdEndPointUri(instrumentationKey);
WebRequest request = WebRequest.Create(appIdEndpoint);
request.Method = "GET";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
return reader.ReadToEnd();
}
}
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}));
}
public virtual void Initialize(TelemetryConfiguration configuration, TelemetryModules modules, string serializedConfiguration)
{
try
{
SdkInternalOperationsMonitor.Enter();
if (modules != null && !modules.Modules.Any(module => module is DiagnosticsTelemetryModule))
{
// Create diagnostics module so configuration loading errors are reported to the portal
modules.Modules.Add(new DiagnosticsTelemetryModule());
}
configuration.TelemetryInitializers.Add(new OperationCorrelationTelemetryInitializer());
// Load configuration from the specified configuration
if (!string.IsNullOrEmpty(serializedConfiguration))
{
try
{
XDocument xml = XDocument.Parse(serializedConfiguration);
LoadFromXml(configuration, modules, xml);
}
catch (XmlException exp)
{
CoreEventSource.Log.ConfigurationFileCouldNotBeParsedError(exp.Message);
}
}
// If an environment variable exists with an instrumentation key then use it (instead) for the "blackfield" scenario.
string environmentInstrumentationKey = PlatformSingleton.Current.GetEnvironmentVariable(InstrumentationKeyWebSitesEnvironmentVariable);
if (!string.IsNullOrEmpty(environmentInstrumentationKey))
{
configuration.InstrumentationKey = environmentInstrumentationKey;
}
// Creating the processor chain with default processor (transmissionprocessor) if none configured
if (configuration.TelemetryProcessors == null)
{
configuration.TelemetryProcessorChainBuilder.Build();
}
foreach (var telemetrySink in configuration.TelemetrySinks)
{
telemetrySink.Initialize(configuration);
if (telemetrySink.TelemetryProcessorChain == null)
{
telemetrySink.TelemetryProcessorChainBuilder.Build();
}
}
InitializeComponents(configuration, modules);
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}
/// <summary>
/// Retrieves the app id given the instrumentation key.
/// </summary>
/// <param name="instrumentationKey">Instrumentation key for which app id is to be retrieved.</param>
/// <returns>App id.</returns>
private async Task <string> FetchAppIdFromService(string instrumentationKey)
{
#if NETSTANDARD1_6
string result = null;
Uri appIdEndpoint = this.GetAppIdEndPointUri(instrumentationKey);
using (HttpClient client = new HttpClient())
{
var resultMessage = await client.GetAsync(appIdEndpoint).ConfigureAwait(false);
if (resultMessage.IsSuccessStatusCode)
{
result = await resultMessage.Content.ReadAsStringAsync().ConfigureAwait(false);
}
else
{
this.RegisterFetchFailure(instrumentationKey, resultMessage.StatusCode);
}
}
return(result);
#else
try
{
SdkInternalOperationsMonitor.Enter();
string result = null;
Uri appIdEndpoint = this.GetAppIdEndPointUri(instrumentationKey);
WebRequest request = WebRequest.Create(appIdEndpoint);
request.Method = "GET";
using (HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync().ConfigureAwait(false))
{
if (response.StatusCode == HttpStatusCode.OK)
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
result = await reader.ReadToEndAsync();
}
}
else
{
this.RegisterFetchFailure(instrumentationKey, response.StatusCode);
}
}
return(result);
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
#endif
}
private void TimerCallback(object state)
{
try
{
SdkInternalOperationsMonitor.Enter();
PerformanceCollectorEventSource.Log.CounterCollectionAttemptEvent();
var stopwatch = new Stopwatch();
stopwatch.Start();
this.EnsurePerformanceCountersRegistered();
var results =
this.collector.Collect(
(counterName, e) =>
PerformanceCollectorEventSource.Log.CounterReadingFailedEvent(e.ToString(), counterName))
.ToList();
stopwatch.Stop();
PerformanceCollectorEventSource.Log.CounterCollectionSuccessEvent(
#pragma warning disable CA1829 // Use Length/Count property instead of Count() when available
results.LongCount(),
#pragma warning restore CA1829 // Use Length/Count property instead of Count() when available
stopwatch.ElapsedMilliseconds);
foreach (var result in results)
{
var telemetry = CreateTelemetry(result.Item1, result.Item2);
try
{
this.client.Track(telemetry);
}
catch (InvalidOperationException e)
{
PerformanceCollectorEventSource.Log.TelemetrySendFailedEvent(e.ToString());
}
}
}
catch (Exception e)
{
PerformanceCollectorEventSource.Log.UnknownErrorEvent(e.ToString());
}
finally
{
if (this.timer != null)
{
this.timer.ScheduleNextTick(this.collectionPeriod);
}
SdkInternalOperationsMonitor.Exit();
}
}
/// <summary>
/// Flushes the in-memory buffer and sends it.
/// </summary>
internal void Flush(TimeSpan timeout)
{
SdkInternalOperationsMonitor.Enter();
try
{
this.DequeueAndSend(timeout);
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}
public virtual void Initialize(TelemetryConfiguration configuration, TelemetryModules modules, string serializedConfiguration)
{
try
{
SdkInternalOperationsMonitor.Enter();
if (modules != null && !modules.Modules.Any(module => module is DiagnosticsTelemetryModule))
{
// Create diagnostics module so configuration loading errors are reported to the portal
modules.Modules.Add(new DiagnosticsTelemetryModule());
}
configuration.TelemetryInitializers.Add(new OperationCorrelationTelemetryInitializer());
// Load configuration from the specified configuration
if (!string.IsNullOrEmpty(serializedConfiguration))
{
try
{
XDocument xml = XDocument.Parse(serializedConfiguration);
LoadFromXml(configuration, modules, xml);
}
catch (XmlException exp)
{
CoreEventSource.Log.ConfigurationFileCouldNotBeParsedError(exp.Message);
}
}
// Creating the processor chain with default processor (transmissionprocessor) if none configured
if (configuration.TelemetryProcessors == null)
{
configuration.TelemetryProcessorChainBuilder.Build();
}
foreach (var telemetrySink in configuration.TelemetrySinks)
{
telemetrySink.Initialize(configuration);
if (telemetrySink.TelemetryProcessorChain == null)
{
telemetrySink.TelemetryProcessorChainBuilder.Build();
}
}
this.SelectInstrumentationKey(configuration);
InitializeComponents(configuration, modules);
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}
private async Task StartSending(Transmission transmission)
{
SdkInternalOperationsMonitor.Enter();
try
{
Exception exception = null;
HttpWebResponseWrapper responseContent = null;
// Locally self-throttle this payload before we send it
Transmission acceptedTransmission = this.Throttle(transmission);
// Now that we've self-imposed a throttle, we can try to send the remaining data
try
{
TelemetryChannelEventSource.Log.TransmissionSendStarted(acceptedTransmission.Id);
responseContent = await acceptedTransmission.SendAsync().ConfigureAwait(false);
}
catch (Exception e)
{
exception = e;
}
finally
{
int currentCapacity = Interlocked.Decrement(ref this.transmissionCount);
if (exception == null)
{
TelemetryChannelEventSource.Log.TransmissionSentSuccessfully(acceptedTransmission.Id, currentCapacity);
}
else
{
TelemetryChannelEventSource.Log.TransmissionSendingFailedWarning(acceptedTransmission.Id, exception.ToString());
}
if (responseContent == null && exception is WebException)
{
HttpWebResponse response = (HttpWebResponse)((WebException)exception).Response;
responseContent = new HttpWebResponseWrapper()
{
StatusCode = (int)response.StatusCode,
StatusDescription = response.StatusDescription,
RetryAfterHeader = response.Headers?.Get("Retry-After")
};
}
this.OnTransmissionSent(new TransmissionProcessedEventArgs(acceptedTransmission, exception, responseContent));
}
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}
public void FirstChanceExceptionStatisticsTelemetryModuleUsesSetsInternalOperationName()
{
var metrics = new List <KeyValuePair <Metric, double> >();
StubMetricProcessor stub = new StubMetricProcessor()
{
OnTrack = (m, v) =>
{
metrics.Add(new KeyValuePair <Metric, double>(m, v));
}
};
this.configuration.TelemetryInitializers.Add(new StubTelemetryInitializer()
{
OnInitialize = (item) =>
{
item.Context.Operation.Name = TestOperationName;
}
});
using (var module = new FirstChanceExceptionStatisticsTelemetryModule())
{
module.Initialize(this.configuration);
module.MetricManager.MetricProcessors.Add(stub);
SdkInternalOperationsMonitor.Enter();
try
{
try
{
// FirstChanceExceptionStatisticsTelemetryModule will process this exception
throw new Exception("test");
}
catch (Exception exc)
{
// code to prevent profiler optimizations
Assert.Equal("test", exc.Message);
}
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}
Assert.Equal(1, metrics.Count);
Assert.Equal("Exceptions thrown", metrics[0].Key.Name);
var dims = metrics[0].Key.Dimensions;
Assert.Equal(2, dims.Count);
Assert.True(dims.Contains(new KeyValuePair <string, string>(FirstChanceExceptionStatisticsTelemetryModule.OperationNameTag, "AI (Internal)")));
}
private void StateThreadWorker(CancellationToken cancellationToken)
{
SdkInternalOperationsMonitor.Enter();
var stopwatch = new Stopwatch();
TimeSpan?timeToNextUpdate = null;
while (true)
{
var currentCallbackStarted = this.timeProvider.UtcNow;
try
{
if (cancellationToken.IsCancellationRequested)
{
SdkInternalOperationsMonitor.Exit();
return;
}
stopwatch.Restart();
timeToNextUpdate = this.stateManager.UpdateState(this.config.InstrumentationKey, this.AuthenticationApiKey);
QuickPulseEventSource.Log.StateTimerTickFinishedEvent(stopwatch.ElapsedMilliseconds);
}
catch (Exception e)
{
QuickPulseEventSource.Log.UnknownErrorEvent(e.ToInvariantString());
}
// the catastrophic fallback is for the case when we've catastrophically failed some place above
timeToNextUpdate = timeToNextUpdate ?? this.timings.CatastrophicFailureTimeout;
// try to factor in the time spend in this tick when scheduling the next one so that the average period is close to the intended
TimeSpan timeSpentInThisTick = this.timeProvider.UtcNow - currentCallbackStarted;
TimeSpan timeLeftUntilNextTick = timeToNextUpdate.Value - timeSpentInThisTick;
timeLeftUntilNextTick = timeLeftUntilNextTick > TimeSpan.Zero ? timeLeftUntilNextTick : TimeSpan.Zero;
try
{
Task.Delay(timeLeftUntilNextTick, cancellationToken).GetAwaiter().GetResult();
}
catch (OperationCanceledException)
{
}
}
}
/// <summary>
/// Flushes the in-memory buffer and sends it.
/// </summary>
internal void Flush(TimeSpan timeout)
{
#if !NETSTANDARD1_3
SdkInternalOperationsMonitor.Enter();
try
{
#endif
this.DequeueAndSend(timeout);
#if !NETSTANDARD1_3
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
#endif
}
/// <summary>
/// Flushes the in-memory buffer and sends it.
/// </summary>
internal void Flush(TimeSpan timeout)
{
#if !CORE_PCL
SdkInternalOperationsMonitor.Enter();
try
{
#endif
this.DequeueAndSend(timeout);
#if !CORE_PCL
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
#endif
}
public void FirstChanceExceptionStatisticsTelemetryModuleMarksOperationAsInternal()
{
var metrics = new List <KeyValuePair <Metric, double> >();
StubMetricProcessor stub = new StubMetricProcessor()
{
OnTrack = (m, v) =>
{
metrics.Add(new KeyValuePair <Metric, double>(m, v));
}
};
using (var module = new FirstChanceExceptionStatisticsTelemetryModule())
{
module.Initialize(this.configuration);
module.MetricManager.MetricProcessors.Add(stub);
try
{
SdkInternalOperationsMonitor.Enter();
// FirstChanceExceptionStatisticsTelemetryModule will process this exception
throw new Exception("test");
}
catch (Exception exc)
{
// code to prevent profiler optimizations
Assert.Equal("test", exc.Message);
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}
Assert.Equal(1, metrics.Count);
Assert.Equal("Exceptions thrown", metrics[0].Key.Name);
var dims = metrics[0].Key.Dimensions;
Assert.Equal(2, dims.Count);
string operationName;
Assert.True(dims.TryGetValue(FirstChanceExceptionStatisticsTelemetryModule.OperationNameTag, out operationName));
Assert.Equal("AI (Internal)", operationName);
}
private void CollectionThreadWorker(CancellationToken cancellationToken)
{
SdkInternalOperationsMonitor.Enter();
var stopwatch = new Stopwatch();
this.InitializeCollectionThread();
while (true)
{
try
{
if (cancellationToken.IsCancellationRequested)
{
this.CloseCollectionThread();
SdkInternalOperationsMonitor.Exit();
return;
}
stopwatch.Restart();
this.CollectData();
QuickPulseEventSource.Log.CollectionTimerTickFinishedEvent(stopwatch.ElapsedMilliseconds);
}
catch (Exception e)
{
QuickPulseEventSource.Log.UnknownErrorEvent(e.ToInvariantString());
}
DateTimeOffset nextTick = this.collectionTimeSlotManager.GetNextCollectionTimeSlot(this.timeProvider.UtcNow);
TimeSpan timeLeftUntilNextTick = nextTick - this.timeProvider.UtcNow;
timeLeftUntilNextTick = timeLeftUntilNextTick > TimeSpan.Zero ? timeLeftUntilNextTick : TimeSpan.Zero;
try
{
Task.Delay(timeLeftUntilNextTick, cancellationToken).GetAwaiter().GetResult();
}
catch (OperationCanceledException)
{
}
}
}
private void CollectionThreadWorker(object state)
{
SdkInternalOperationsMonitor.Enter();
var stopwatch = new Stopwatch();
var threadState = (QuickPulseThreadState)state;
this.InitializeCollectionThread();
while (true)
{
try
{
if (threadState.IsStopRequested)
{
this.CloseCollectionThread();
SdkInternalOperationsMonitor.Exit();
return;
}
stopwatch.Restart();
this.CollectData();
QuickPulseEventSource.Log.CollectionTimerTickFinishedEvent(stopwatch.ElapsedMilliseconds);
}
catch (Exception e)
{
QuickPulseEventSource.Log.UnknownErrorEvent(e.ToInvariantString());
}
DateTimeOffset nextTick = this.collectionTimeSlotManager.GetNextCollectionTimeSlot(this.timeProvider.UtcNow);
TimeSpan timeLeftUntilNextTick = nextTick - this.timeProvider.UtcNow;
Thread.Sleep(timeLeftUntilNextTick > TimeSpan.Zero ? timeLeftUntilNextTick : TimeSpan.Zero);
}
}
/// <summary>
/// Retrieves the Application Id given the Instrumentation Key.
/// </summary>
/// <param name="instrumentationKey">Instrumentation key for which Application Id is to be retrieved.</param>
/// <returns>Task to resolve Application Id.</returns>
private async Task <string> SendRequestAsync(string instrumentationKey)
{
try
{
SdkInternalOperationsMonitor.Enter();
var resultMessage = await this.GetAsync(instrumentationKey).ConfigureAwait(false);
if (resultMessage.IsSuccessStatusCode)
{
return(await resultMessage.Content.ReadAsStringAsync().ConfigureAwait(false));
}
else
{
this.FailedRequestsManager.RegisterFetchFailure(instrumentationKey, resultMessage.StatusCode);
return(null);
}
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}
private async Task StartSending(Transmission transmission)
{
SdkInternalOperationsMonitor.Enter();
try
{
Exception exception = null;
HttpWebResponseWrapper responseContent = null;
// Locally self-throttle this payload before we send it
Transmission acceptedTransmission = this.Throttle(transmission);
// Now that we've self-imposed a throttle, we can try to send the remaining data
try
{
TelemetryChannelEventSource.Log.TransmissionSendStarted(acceptedTransmission.Id);
responseContent = await acceptedTransmission.SendAsync().ConfigureAwait(false);
}
catch (Exception e)
{
exception = e;
}
finally
{
int currentCapacity = Interlocked.Decrement(ref this.transmissionCount);
if (exception != null)
{
TelemetryChannelEventSource.Log.TransmissionSendingFailedWarning(acceptedTransmission.Id, exception.ToString());
}
else
{
if (responseContent != null)
{
if (responseContent.StatusCode < 400)
{
TelemetryChannelEventSource.Log.TransmissionSentSuccessfully(acceptedTransmission.Id,
currentCapacity);
}
else
{
TelemetryChannelEventSource.Log.TransmissionSendingFailedWarning(
acceptedTransmission.Id,
responseContent.StatusCode.ToString(CultureInfo.InvariantCulture));
}
if (TelemetryChannelEventSource.IsVerboseEnabled)
{
TelemetryChannelEventSource.Log.RawResponseFromAIBackend(acceptedTransmission.Id,
responseContent.Content);
}
}
}
if (responseContent == null && exception is HttpRequestException)
{
// HttpClient.SendAsync throws HttpRequestException on the following scenarios:
// "The request failed due to an underlying issue such as network connectivity, DNS failure, server certificate validation or timeout."
// https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient.sendasync?view=netstandard-1.6
responseContent = new HttpWebResponseWrapper()
{
// Expectation is that RetryPolicy will attempt retry for this status.
StatusCode = ResponseStatusCodes.UnknownNetworkError
};
}
this.OnTransmissionSent(new TransmissionProcessedEventArgs(acceptedTransmission, exception, responseContent));
}
}
finally
{
SdkInternalOperationsMonitor.Exit();
}
}