代码之家 › 专栏 › 技术社区 › Pankaj Rawat

应用程序洞察关联的Azure函数中的方面

azure-application-insights aop azure-functions

0

Pankaj Rawat · 技术社区 · 7 年前

遥测客户端

我可以在applicationinsight中看到我所有的跟踪、异常和异常日志,但是如果没有它们,我就无法进行关联 操作名称 和

现在我手动调用遥测客户端 启动操作 停止操作 创建OperationId。

蓝函数

[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);
    }
}

我不想把try-catch块放在每个函数中,所以我用postsharp创建了Aspect(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postsharp替代品(sprint.net、Cauldron.Interception等)

我能做些什么来创建关联(OperationId)而不是这段代码?

1 回复 | 直到 7 年前

1

3

Pankaj Rawat 7 年前

我得到了Postsharp替代“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);
        }
    }
}