.net 尝试记录指标Azure函数时出错

fnatzsnv 于 2022-12-20 发布在 .NET

关注(0)|答案(3)|浏览(110)

我的记录器有一个问题，每当我尝试记录指标时，就会发生错误。下面，我留下发生错误的代码部分。

private void LogBlobExecutionMetric(ILogger log,
                                        BlobMigrationStrategyIdentifier blobMigrationStrategyIdentifier,
                                        ControlMetadataEntity controlMetadataEntity,
                                        BlobMetadataEntity blobMetadataEntity,
                                        long elapsedMilliseconds,
                                        long? fileSizeInBytes)
    {
        // Create the properties for all metrics that will be logged.
        Dictionary<string, object> properties = new Dictionary<string, object>()
        {
            { "BlobMigrationStrategyIdentifier", blobMigrationStrategyIdentifier.ToString() },
            { "ExecutionId", controlMetadataEntity.RowKey },
            { "BlobMetadataId", blobMetadataEntity.RowKey },
            { "BlobState", blobMetadataEntity.State }
        };

        //The error occurs here 
        log.LogMetric("BlobExecutionElapsedMilliseconds", elapsedMilliseconds, properties);
    }

我尝试了几种方法，但都不起作用，唯一的解决方案是从log.LogMetric（）切换到log.LogInformation（），但这样会丢失所有指标，而且跟踪应用程序的洞察力也会变得更加困难
我还留下了生成的堆栈跟踪，但即使是警告空参数，我也检查了，没有传递的参数为空或不正确。

Result: Failure
Exception: System.AggregateException: One or more errors occurred. (An error occurred while writing to logger(s). (Value cannot be null. (Parameter 'value')))
 ---> System.AggregateException: An error occurred while writing to logger(s). (Value cannot be null. (Parameter 'value'))
 ---> System.ArgumentNullException: Value cannot be null. (Parameter 'value')
   at Google.Protobuf.ProtoPreconditions.CheckNotNull[T](T value, String name)
   at Microsoft.Azure.Functions.Worker.Logging.GrpcFunctionsHostLogger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter) in D:\a\1\s\src\DotNetWorker.Grpc\GrpcFunctionsHostLogger.cs:line 44
   at Microsoft.Extensions.Logging.Logger.<Log>g__LoggerLog|12_0[TState](LogLevel logLevel, EventId eventId, ILogger logger, Exception exception, Func`3 formatter, List`1& exceptions, TState& state)
   --- End of inner exception stack trace ---
   at Microsoft.Extensions.Logging.Logger.ThrowLoggingError(List`1 exceptions)
   at Microsoft.Extensions.Logging.Logger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter)
   at Microsoft.Extensions.Logging.LoggerExtensions.LogMetric(ILogger logger, String name, Double value, IDictionary`2 properties) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Loggers\Logger\LoggerExtensions.cs:line 33
   at ThomsonReuters.DocMi.BlobMigration.Execution.AzureFunctions.Functions.BlobMigration.RunBlobMigration.LogBlobExecutionMetric(ILogger log, BlobMigrationStrategyIdentifier blobMigrationStrategyIdentifier, ControlMetadataEntity controlMetadataEntity, BlobMetadataEntity blobMetadataEntity, Int64 elapsedMilliseconds, Nullable`1 fileSizeInBytes) in /home/runner/work/DocMi_Functions/DocMi_Functions/src/BlobMigration/ExecutionServices/ThomsonReuters.DocMi.BlobMigration.Execution.AzureFunctions/Functions/BlobMigration/RunBlobMigration.cs:line 195
   at ThomsonReuters.DocMi.BlobMigration.Execution.AzureFunctions.Functions.BlobMigration.RunBlobMigration.RunAsync(String messageBrokerMessageString, FunctionContext context) in /home/runner/work/DocMi_Functions/DocMi_Functions/src/BlobMigration/ExecutionServices/ThomsonReuters.DocMi.BlobMigration.Execution.AzureFunctions/Functions/BlobMigration/RunBlobMigration.cs:line 164
   at Microsoft.Azure.Functions.Worker.Invocation.VoidTaskMethodInvoker`2.InvokeAsync(TReflected instance, Object[] arguments) in D:\a\1\s\src\DotNetWorker.Core\Invocation\VoidTaskMethodInvoker.cs:line 24
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at Microsoft.Azure.Functions.Worker.Invocation.DefaultFunctionInvoker`2.<>c.<InvokeAsync>b__6_0(Task`1 t) in D:\a\1\s\src\DotNetWorker.Core\Invocation\DefaultFunctionInvoker.cs:line 32
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
   --- End of stack trace from previous location ---
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
   --- End of stack trace from previous location ---
   at Microsoft.Azure.Functions.Worker.Invocation.DefaultFunctionExecutor.ExecuteAsync(FunctionContext context) in D:\a\1\s\src\DotNetWorker.Core\Invocation\DefaultFunctionExecutor.cs:line 45
   at Microsoft.Azure.Functions.Worker.OutputBindings.OutputBindingsMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\1\s\src\DotNetWorker.Core\OutputBindings\OutputBindingsMiddleware.cs:line 16
   at Microsoft.Azure.Functions.Worker.GrpcWorker.InvocationRequestHandlerAsync(InvocationRequest request, IFunctionsApplication application, IInvocationFeaturesFactory invocationFeaturesFactory, ObjectSerializer serializer, IOutputBindingsInfoProvider outputBindingsInfoProvider) in D:\a\1\s\src\DotNetWorker.Grpc\GrpcWorker.cs:line 167
Stack:   
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at Microsoft.Azure.Functions.Worker.Invocation.DefaultFunctionInvoker`2.<>c.<InvokeAsync>b__6_0(Task`1 t) in D:\a\1\s\src\DotNetWorker.Core\Invocation\DefaultFunctionInvoker.cs:line 32
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
   --- End of stack trace from previous location ---
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
   --- End of stack trace from previous location ---
   at Microsoft.Azure.Functions.Worker.Invocation.DefaultFunctionExecutor.ExecuteAsync(FunctionContext context) in D:\a\1\s\src\DotNetWorker.Core\Invocation\DefaultFunctionExecutor.cs:line 45
   at Microsoft.Azure.Functions.Worker.OutputBindings.OutputBindingsMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\1\s\src\DotNetWorker.Core\OutputBindings\OutputBindingsMiddleware.cs:line 16
   at Microsoft.Azure.Functions.Worker.GrpcWorker.InvocationRequestHandlerAsync(InvocationRequest request, IFunctionsApplication application, IInvocationFeaturesFactory invocationFeaturesFactory, ObjectSerializer serializer, IOutputBindingsInfoProvider outputBindingsInfoProvider) in D:\a\1\s\src\DotNetWorker.Grpc\GrpcWorker.cs:line 167

感谢每一个能为这个错误提出解决方案或替代方案的人，非常感谢。

.net

来源：https://stackoverflow.com/questions/70657110/error-when-trying-to-log-metric-azure-function

3条答案

按热度按时间

vm0i2vca1#

要处理此错误，我们需要检查记录器是否使用任何其他记录器函数（如ConsoleLogger）进行了初始化
还要检查saftimufti的SO答案。如果日志度量是自定义的，则检查自定义度量。
跟踪指标的示例代码：

TelemetryConfiguration.Active.InstrumentationKey = "your key";
TelemetryClient client = new TelemetryClient(); 
client.TrackMetric("my metric", 60);
client.GetMetric("my metric").TrackValue(89);
client.Flush();

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rjzwgtxy2#

我遇到了完全相同的问题。当ILogger被注入到函数中时，它在v3 Azure函数中工作正常。但是，在更新到.NET 6并在进程外运行函数后，它不再工作。文档说我们必须注入FunctionContext context，并在函数内执行context.GetLogger<MyType>();。返回的日志记录器似乎应该完全初始化，但是这样我得到了和OP相同的异常。简单地将ILogger注入类构造函数会导致相同的异常。将ILogger直接注入函数Run方法不会导致异常，但是指标不会被记录，只是被忽略。
我通过重写使其工作，以便更直接地使用ApplicationInsights日志记录，这与第一个答案大致相同，但这里有一个更详细的示例：
首先确保Program.cs文件包含以下内容：

static async Task Main(string[] args)
{
    var host = new HostBuilder()
        .ConfigureServices(s =>
        {
            s.AddLogging();
            s.AddApplicationInsightsTelemetryWorkerService();
        }
}

假设您正在使用DI，请确保按如下所示创建遥测客户端：

private readonly TelemetryClient _telemetryClient;

public MyClass(TelemetryConfiguration telemetryConfiguration)
{
    _telemetryClient = new TelemetryClient(telemetryConfiguration);
}

然后，在您的函数中，您可以记录自定义指标，如下所示：

var myMetric = new MetricTelemetry
{
    Name = "MyMetricName",
    Sum = 123
};
myMetric.Properties.Add("MyCustomProperty1", "My custom property value 1.");
myMetric.Properties.Add("MyCustomProperty2", "My custom property value 2.");

_telemetryClient.TrackMetric(myMetric);

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vshtjzan3#

你是如何初始化你的日志记录器？我有一个类似的问题，当我初始化日志记录器如下：

class MyClass {
    private readonly ILogger _logger;
    
    public MyClass(ILogger logger) {
        _logger = logger;
    }
}

我可以通过在构造函数的变量定义中传递一个类型MyClass给ILogger来解决这个问题。

class MyClass {
    private readonly ILogger _logger;
    
    public MyClass(ILogger<MyClass> logger) {
        _logger = logger;
    }
}

赞(0）回复(0）举报 2022-12-20

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.net 尝试记录指标Azure函数时出错

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