Azure 函数中用于应用程序见解关联的方面

Question

我编写了许多Azure函数(Http，ServiceBus，EventHub和CosmosDB触发器(。对于应用程序日志记录，我已经实现了自己的 Logger 类，该类创建TelemetryClient对象以在应用程序见解中接收日志。

我可以在应用程序智能分析中看到我所有的跟踪、异常和异常日志，但没有操作名称和操作ID就无法关联

现在，我手动调用遥测客户端启动操作和停止操作来创建操作ID。

AzureFunction

[FunctionName("AlertEventStoreFunction")]
public static async Task Run([EventHubTrigger("%AlertEventHub%", Connection = "AlertEventHubConnection", ConsumerGroup = "cg1")]EventData eventMessage,
[Inject]IEventService eventService, [Inject]ILog log)
{
log.StartOperation("AlertEventStoreFunction");
try
{                
log.Info($"Event PartitionKey {eventMessage.PartitionKey}, Offset {eventMessage.Offset} and SequenceNumber {eventMessage.SequenceNumber}");
string message = Encoding.UTF8.GetString(eventMessage.GetBytes());
log.Verbose(message);
await eventService.SaveAlertEventAsync(message);
}
catch (Exception ex)
{
log.Error(ex.Message, ex);
}
finally
{
log.StopOperation();
}
}

记录器类

public class Log : ILog
{
private static TelemetryClient telemetryClient = new TelemetryClient() { InstrumentationKey = ConfigurationManager.AppSettings["InstrumentationKey"] };
private IOperationHolder<RequestTelemetry> operation;
private bool status = true;
public TelemetryClient TelemetryClient
{
get
{
return telemetryClient;
}
}
/// <summary>
/// This method will start new session for particular request, we can correlate each log by Operation_Id
/// </summary>
/// <param name="functionName">function name</param>
public void StartOperation(string functionName)
{
RequestTelemetry requestTelemetry = new RequestTelemetry { Name = functionName };
this.operation = telemetryClient.StartOperation(requestTelemetry);
telemetryClient.TrackTrace($"{functionName} trigger");
}
/// <summary>
/// this method will close session
/// </summary>
public void StopOperation()
{
telemetryClient.StopOperation(this.operation);
this.operation.Telemetry.Success = status;
}
public void Error(string message, Exception ex = null)
{
telemetryClient.TrackTrace(message, SeverityLevel.Error);
if (ex != null)
telemetryClient.TrackException(ex);
status = false;
}
public void Info(string message)
{
telemetryClient.TrackTrace(message, SeverityLevel.Information);
}
public void Verbose(string message)
{
telemetryClient.TrackTrace(message, SeverityLevel.Verbose);
}
public void Warning(string message)
{
telemetryClient.TrackTrace(message, SeverityLevel.Warning);
}
}

我不想在每个函数中都放置 try-catch 块，所以我使用 postsharp 创建了方面 (AOP(，它按预期工作，但免费版本只允许 10 个函数。

我没有看到任何其他好的后尖(尝试 sprint.net，Cauldron.Interception等(

除了这段代码，我可以做什么来创建关联(操作 ID(？

Answer 1

我得到了Postsharp替代"MrAdvice"，新版本没有任何依赖关系

public class LoggerAspect : Attribute, IMethodAdvice
{
private ILog log;
private IOperationHolder<RequestTelemetry> operation;
public void Advise(MethodAdviceContext context)
{
try
{
log = LogManager.GetLogger();
RequestTelemetry requestTelemetry = new RequestTelemetry { Name = context.TargetType.Name };
operation = log.TelemetryClient.StartOperation(requestTelemetry);
operation.Telemetry.Success = true;
context.Proceed(); // this calls the original method
}
catch (Exception ex)
{
operation.Telemetry.Success = false;
log.Error(ex.Message, ex);
}
finally
{
log.TelemetryClient.StopOperation(operation);
}
}
}

仍然开放以获得更好的建议。