我在我的專案中設定了應用程式洞察，它作業正常，它將資料發送到 Azure 沒有任何問題，現在我正在嘗試使用 System.Diagnostics.SourceTrace 將一些跟蹤日志發送到遙測資料中，該遙測資料在內部實作Webhost 應用程式中參考的 nuget 包（此 nuget 包不包含對應用洞察的參考），問題是......出于某種原因，它只是沒有到達該代碼，好吧，它確實存在，也沒有同時，當我在輸出視窗中除錯時，我可以看到當它點擊 Sytem.Diagnostics.TraceEvent() 方法時創建了一個事件，但它顯示如下
Application Insights Telemetry (unconfigured): {"name":"Microsoft.ApplicationInsights.Message","time":"2021-09-01T22:43:18.7652108Z","tags":{"ai.cloud.roleInstance":
這讓我覺得由于某種原因，遙測客戶端丟失了對儀器密鑰或類似東西的參考，我不知道如何解決這個問題，因為它只發生在那里。
編輯：這是我們設定跟蹤源的方法，此代碼位于 webhost 應用程式的 web.config 檔案中，該檔案參考了另一個專案，該專案參考了發生日志記錄的 nuget 包。
<source name="MySource" switchValue="Error, Information, Warning">
<listeners>
<add name="AppInsights" type="Microsoft.ApplicationInsights.TraceListener.ApplicationInsightsTraceListener, Microsoft.ApplicationInsights.TraceListener" />
</listeners>
</source>
我除錯了日志記錄發生的類，當我評估遙測配置物件時，它缺少檢測鍵（這很奇怪，因為大多數遙測作業正常）
這是我們設定遙測客戶端的代碼：
public void Initialize()
{
if (_initialized) return;
lock (_initializationLock)
{
if (_initialized) return;
var iKey = ApplicationInsightsConfiguration.InstrumentationKey;
//Call this even if ikey is null or empty
MonitoringSettings = new Settings(iKey);
//If we don't have a key we can't do anything
if (string.IsNullOrEmpty(iKey))
{
Logger.Info($"No Application Insights telemetry key is available (Production flag: {SystemSettings.IsProductionServer})");
TelemetryConfiguration.Active.DisableTelemetry = true;
return;
}
//Set telemetry key
TelemetryConfiguration.Active.InstrumentationKey = iKey;
//Set up custom telemetry initializers
//We need to initialize it before we send the non-prod custom event, so that the event will contain all required info
SetUpTelemetryInitializers();
//Disable telemetry reporting if it is not production instance
//If overridden in web.ApplicationInsightsConfiguration explicitly, allow telemetry reporting
if (ApplicationInsightsConfiguration.ForceSendTelemetry)
{
Client.TrackEvent("ForceSendTelemetry enabled.");
}
//Set up custom telemetry filtration
SetUpTelemetryProcessors();
//send the license information if it has not already been sent for this Middleware instance startup
SendLicenseConfiguration();
//Track the event
Client.TrackEvent("Telemetry Opt In", MonitoringSettings.GetAsDictionary());
_initialized = true;
}
}
It's worth mentioning that, if I add the telemetry key into the app config, the tracelistener works... For some reason, when we add it programatically it's missing the reference to the original telemetryconfiguration object with the correct instrumentation key, and I am thinking that is happening because I am creating a new TraceSource object with the listener for appinsights which includes a new instance of configuration.
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使應用程式能夠跟蹤代碼的執行并將跟蹤訊息與其源相關聯的屬性。
public class TraceSource
下面的代碼可幫助您理解Tracesource類并演示開關和過濾器的用法。
// The following configuration file can be used with this sample.
// When using a configuration file #define ConfigFile.
// <source name="TraceTest" switchName="SourceSwitch" switchType="System.Diagnostics.SourceSwitch" >
// <add name="console" type="System.Diagnostics.ConsoleTraceListener" initializeData="false" />
// <remove name ="Default" />
// <!-- You can set the level at which tracing is to occur -->
// <add name="SourceSwitch" value="Warning" />
// <!-- You can turn tracing off -->
// <!--add name="SourceSwitch" value="Off" -->
// <trace autoflush="true" indentsize="4"></trace>
#define TRACE
//#define ConfigFile
using System;
using System.Collections;
using System.Diagnostics;
using System.Reflection;
using System.IO;
using System.Security.Permissions;
namespace Testing
{
class TraceTest
{
// Initialize the trace source.
static TraceSource ts = new TraceSource("TraceTest");
[SwitchAttribute("SourceSwitch", typeof(SourceSwitch))]
static void Main()
{
try
{
// Initialize trace switches.
#if(!ConfigFile)
SourceSwitch sourceSwitch = new SourceSwitch("SourceSwitch", "Verbose");
ts.Switch = sourceSwitch;
int idxConsole = ts.Listeners.Add(new System.Diagnostics.ConsoleTraceListener());
ts.Listeners[idxConsole].Name = "console";
#endif
DisplayProperties(ts);
ts.Listeners["console"].TraceOutputOptions |= TraceOptions.Callstack;
ts.TraceEvent(TraceEventType.Warning, 1);
ts.Listeners["console"].TraceOutputOptions = TraceOptions.DateTime;
// Issue file not found message as a warning.
ts.TraceEvent(TraceEventType.Warning, 2, "File Test not found");
// Issue file not found message as a verbose event using a formatted string.
ts.TraceEvent(TraceEventType.Verbose, 3, "File {0} not found.", "test");
// Issue file not found message as information.
ts.TraceInformation("File {0} not found.", "test");
ts.Listeners["console"].TraceOutputOptions |= TraceOptions.LogicalOperationStack;
// Issue file not found message as an error event.
ts.TraceEvent(TraceEventType.Error, 4, "File {0} not found.", "test");
// Test the filter on the ConsoleTraceListener.
ts.Listeners["console"].Filter = new SourceFilter("No match");
ts.TraceData(TraceEventType.Error, 5,
"SourceFilter should reject this message for the console trace listener.");
ts.Listeners["console"].Filter = new SourceFilter("TraceTest");
ts.TraceData(TraceEventType.Error, 6,
"SourceFilter should let this message through on the console trace listener.");
ts.Listeners["console"].Filter = null;
// Use the TraceData method.
ts.TraceData(TraceEventType.Warning, 7, new object());
ts.TraceData(TraceEventType.Warning, 8, new object[] { "Message 1", "Message 2" });
// Activity tests.
ts.TraceEvent(TraceEventType.Start, 9, "Will not appear until the switch is changed.");
ts.Switch.Level = SourceLevels.ActivityTracing | SourceLevels.Critical;
ts.TraceEvent(TraceEventType.Suspend, 10, "Switch includes ActivityTracing, this should appear");
ts.TraceEvent(TraceEventType.Critical, 11, "Switch includes Critical, this should appear");
ts.Flush();
ts.Close();
Console.WriteLine("Press any key to exit.");
Console.Read();
}
catch (Exception e)
{
// Catch any unexpected exception.
Console.WriteLine("Unexpected exception: " e.ToString());
Console.Read();
}
}
public static void DisplayProperties(TraceSource ts)
{
Console.WriteLine("TraceSource name = " ts.Name);
Console.WriteLine("TraceSource switch level = " ts.Switch.Level);
Console.WriteLine("TraceSource switch = " ts.Switch.DisplayName);
SwitchAttribute[] switches = SwitchAttribute.GetAll(typeof(TraceTest).Assembly);
for (int i = 0; i < switches.Length; i )
{
Console.WriteLine("Switch name = " switches[i].SwitchName);
Console.WriteLine("Switch type = " switches[i].SwitchType);
}
#if(ConfigFile)
// Get the custom attributes for the TraceSource.
Console.WriteLine("Number of custom trace source attributes = "
ts.Attributes.Count);
foreach (DictionaryEntry de in ts.Attributes)
Console.WriteLine("Custom trace source attribute = "
de.Key " " de.Value);
// Get the custom attributes for the trace source switch.
foreach (DictionaryEntry de in ts.Switch.Attributes)
Console.WriteLine("Custom switch attribute = "
de.Key " " de.Value);
#endif
Console.WriteLine("Number of listeners = " ts.Listeners.Count);
foreach (TraceListener traceListener in ts.Listeners)
{
Console.Write("TraceListener: " traceListener.Name "\t");
// The following output can be used to update the configuration file.
Console.WriteLine("AssemblyQualifiedName = "
(traceListener.GetType().AssemblyQualifiedName));
}
}
}
}
有關更多資訊，請驗證 TraceSource 類。
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標籤：asp.net azure wcf azure-application-insights trace