Azure Function 中用于 Application Insight 关联的方面

Question

我写过很多 Azure 函数（Http、ServiceBus、EventHub 和 CosmosDB 触发器）。对于应用程序日志记录，我实现了自己的记录器 class，它创建 TelemetryClient 对象以在 Application Insight 中接收日志。

我可以在 Application Insight 中看到我的所有跟踪、异常和异常日志，但如果没有 OperationName 和 OperationId[，我无法关联=12=]

现在我手动调用 TelemetryClient StartOperation 和 StopOperation 来创建 OperationId。

Azure函数

[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Class

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 Aspect (AOP)，它按预期工作，但免费版本仅允许使用 10 个函数。

我没有看到任何其他好的 postsharp 替代品（尝试过 sprint.net、Cauldron.Interception 等）

除了这段代码，我还能做些什么来创建关联 (OperationId)？

Answer 1

我得到了 Postsharp alternate "MrAdvice"，新版本没有任何依赖性

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);
        }
    }
}

仍在接受更好的建议。

Azure Function 中用于 Application Insight 关联的方面

Aspect in Azure Function for Application Insight Correlation

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