Esempio n. 1
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        public string Health([FromServices] IManagedTracer tracer)
        {
            string message = "/_ah/health";

            using (tracer.StartSpan(message))
            {
                Thread.Sleep(10);
            }
            return(message);
        }
Esempio n. 2
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        public async Task <string> CreateFirstSpan(string id)
        {
            string createNoSpanUri     = $"/Propagation/{nameof(CreateNoSpan)}/{id}";
            string createSecondSpanUri = $"/Propagation/{nameof(CreatesSecondSpan)}/{id}";
            string message             = EntryData.GetMessage(nameof(CreateFirstSpan), id);

            // This will guarantee that our requests are to the first server instead
            // of to a published app in localhost.
            using (_propagatingHandler.InnerHandler = FirstCallServer.CreateHandler())
                using (var client = new HttpClient(_propagatingHandler, false))
                    using (_tracer.StartSpan(message))
                    {
                        client.BaseAddress = new Uri("http://localhost");
                        await client.GetAsync(createNoSpanUri);

                        await client.GetAsync(createSecondSpanUri);
                    }
            return(message);
        }
Esempio n. 3
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        /// <summary>Traces a 10ms sleep.</summary>
        public string Trace(string id, [FromServices] IManagedTracer tracer)
        {
            string message = EntryData.GetMessage(nameof(Trace), id);

            using (tracer.StartSpan(message))
            {
                Thread.Sleep(10);
            }
            return(message);
        }
Esempio n. 4
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        /// <summary>Traces a 10ms sleep and throws an exception.</summary>
        public string ThrowException(string id, [FromServices] IManagedTracer tracer)
        {
            // Add a span with the test id to allow for the trace to be found.
            string message = GetMessage(nameof(ThrowException), id);

            tracer.StartSpan(message);
            Thread.Sleep(10);
            tracer.EndSpan();
            throw new DivideByZeroException();
        }
Esempio n. 5
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        /// <summary>Traces a 10ms sleep and adds a stacktrace.</summary>
        public string TraceStackTrace(string id, [FromServices] IManagedTracer tracer)
        {
            string message = GetMessage(nameof(TraceStackTrace), id);

            tracer.StartSpan(message);
            Thread.Sleep(10);
            tracer.SetStackTrace(CreateStackTrace());
            tracer.EndSpan();
            return(message);
        }
 // This incoming HTTP request should be captured by Trace.
 public IActionResult Index([FromServices] IManagedTracer tracer)
 {
     using (tracer.StartSpan(nameof(Index)))
     {
         var traceHeaderHandler = new TraceHeaderPropagatingHandler(() => tracer);
         var response           = TraceOutgoing(traceHeaderHandler);
         ViewData["text"] = response.Result.ToString();
         return(View());
     }
 }
Esempio n. 7
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        public async Task <string> TraceOutgoing(string id, [FromServices] IManagedTracer tracer, [FromServices] TraceHeaderPropagatingHandler propagatingHandler)
        {
            string message = EntryData.GetMessage(nameof(TraceOutgoing), id);

            using (tracer.StartSpan(message))
                using (var httpClient = new HttpClient(propagatingHandler))
                {
                    await httpClient.GetAsync("https://google.com/");
                }
            return(message);
        }
Esempio n. 8
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        public async Task <string> TraceOutgoingClientFactory(string id, [FromServices] IManagedTracer tracer, [FromServices] IHttpClientFactory httpClientFactory)
        {
            string message = EntryData.GetMessage(nameof(TraceOutgoingClientFactory), id);

            using (tracer.StartSpan(message))
            {
                var httpClient = httpClientFactory.CreateClient("google");
                await httpClient.GetAsync("");
            }
            return(message);
        }
Esempio n. 9
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        /// <summary>Traces a 10ms sleep and adds an annotation.</summary>
        public string TraceLabels(string id, [FromServices] IManagedTracer tracer)
        {
            string message = GetMessage(nameof(TraceLabels), id);

            tracer.StartSpan(message);
            Thread.Sleep(10);
            tracer.AnnotateSpan(new Dictionary <string, string> {
                { Label, LabelValue }
            });
            tracer.EndSpan();
            return(message);
        }
        /// <summary>
        /// Handles received HTTP request. For details of the expected request,
        /// please see Dialogflow fulfillment doc: https://dialogflow.com/docs/fulfillment
        /// </summary>
        /// <param name="httpRequest">HTTP request</param>
        /// <returns>Webhook response</returns>
        public async Task <WebhookResponse> HandleRequest(HttpRequest httpRequest)
        {
            using (_tracer.StartSpan(nameof(DialogflowApp)))
            {
                WebhookRequest request;

                using (var reader = new StreamReader(httpRequest.Body))
                {
                    request = jsonParser.Parse <WebhookRequest>(reader);
                }

                _logger.LogInformation($"Intent: '{request.QueryResult.Intent.DisplayName}',  QueryText: '{request.QueryResult.QueryText}'");

                var conversation = GetOrCreateConversation(request.Session);

                using (_tracer.StartSpan("Conversation"))
                {
                    return(await conversation.HandleAsync(request));
                }
            }
        }
Esempio n. 11
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        /// <summary>Traces a 10ms sleep and adds an annotation.</summary>
        public string TraceLabels(string id, [FromServices] IManagedTracer tracer)
        {
            string message = EntryData.GetMessage(nameof(TraceLabels), id);

            using (tracer.StartSpan(message))
            {
                Thread.Sleep(10);
                tracer.AnnotateSpan(new Dictionary <string, string> {
                    { TraceEntryData.TraceLabel, TraceEntryData.TraceLabelValue }
                });
                return(message);
            }
        }
Esempio n. 12
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        public async Task TraceIncomingAsync()
        {
            IHost host = null;
            // Hides that we use different classes so that we can have multiple CreateHostBuilder methods.
            Func <IHostBuilder> CreateHostBuilder = DefaultHostBuilder.CreateHostBuilder;

            try
            {
                // Sample: Start
                host = CreateHostBuilder().Build();
                await host.StartAsync();

                // End sample

                object request = null;
                // Sample: IncomingContext
                ITraceContext  traceContext  = GetTraceContextFromIncomingRequest(request);
                var            tracerFactory = host.Services.GetRequiredService <Func <ITraceContext, IManagedTracer> >();
                IManagedTracer tracer        = tracerFactory(traceContext);
                ContextTracerManager.SetCurrentTracer(tracer);
                // End sample

                // Let's just start a span with the test ID so we can find it faster.
                // But we don't show this in sample code.
                using (tracer.StartSpan(_testId))
                {
                    // Sample: Trace
                    IManagedTracer currentTracer = host.Services.GetRequiredService <IManagedTracer>();
                    using (currentTracer.StartSpan("testing_tracing"))
                    {
                        Console.WriteLine("Using Cloud Trace from a non ASP.NET Core app");
                    }
                    // End sample
                }

                var trace = TraceEntryPolling.Default.GetTrace(_testId, _startTime);
                TraceEntryVerifiers.AssertParentChildSpan(trace, _testId, "testing_tracing");
                Assert.Equal(traceContext.TraceId, trace.TraceId);
            }
            finally
            {
                if (host is object)
                {
                    await host.StopAsync();
                }
            }
        }
        /// <summary>
        /// Creates a <see cref="TraceHeaderPropagatingHandler"/> and traces the sending of a
        /// GET request to the given Uri.  The trace is wrapped in a parent span.
        /// </summary>
        /// <param name="rootSpanName">The name of the root span that will wrap the span
        /// that traces the request.</param>
        /// <param name="uri">The Uri to request.</param>
        /// <param name="exceptionExpected">True if an exception from the request to the Uri is expected.</param>
        private async Task TraceOutGoingRequest(string rootSpanName, string uri, bool exceptionExpected)
        {
            using (_tracer.StartSpan(rootSpanName))
                using (var traceHeaderHandler = new TraceHeaderPropagatingHandler(() => _tracer))
                    using (var httpClient = new HttpClient(traceHeaderHandler))
                    {
                        try
                        {
                            await httpClient.GetAsync(uri);

                            Assert.False(exceptionExpected);
                        }
                        catch (Exception e) when(exceptionExpected && !(e is Xunit.Sdk.XunitException))
                        {
                        }
                    }
        }
        public async Task TraceAsync()
        {
            // Naming it like an instance variable so that it looks like that on sample code.
            IHost _host = null;

            try
            {
                // Sample: Start
                _host = CreateHostBuilder().Build();
                await _host.StartAsync();

                // End sample

                // Sample: IncomingContext
                ITraceContext  traceContext  = GetTraceContextFromIncomingRequest();
                var            tracerFactory = _host.Services.GetRequiredService <Func <ITraceContext, IManagedTracer> >();
                IManagedTracer tracer        = tracerFactory(traceContext);
                ContextTracerManager.SetCurrentTracer(tracer);
                // End sample

                // Let's just start a span with the test ID so we can find it faster.
                // But we don't show this in sample code.
                using (tracer.StartSpan(_testId))
                {
                    // Sample: Trace
                    IManagedTracer currentTracer = _host.Services.GetRequiredService <IManagedTracer>();
                    using (currentTracer.StartSpan("standalone_tracing"))
                    {
                        Console.WriteLine("Using Cloud Trace from a non ASP.NET Core app");
                    }
                    // End sample
                }

                var trace = s_polling.GetTrace(_testId, _startTime);
                TraceEntryVerifiers.AssertParentChildSpan(trace, _testId, "standalone_tracing");
                Assert.Equal(traceContext.TraceId, trace.TraceId);
            }
            finally
            {
                if (_host != null)
                {
                    await _host.StopAsync();
                }
            }
        }
Esempio n. 15
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        public async Task TraceOutgoingAsync()
        {
            IHost host = null;

            try
            {
                host = OutgoingHostBuilder.CreateHostBuilder().Build();
                await host.StartAsync();

                ITraceContext  traceContext  = new SimpleTraceContext(null, null, true);
                var            tracerFactory = host.Services.GetRequiredService <Func <ITraceContext, IManagedTracer> >();
                IManagedTracer tracer        = tracerFactory(traceContext);
                ContextTracerManager.SetCurrentTracer(tracer);

                // Let's just start a span with the test ID so we can find it faster.
                // But we don't show this in sample code.
                using (tracer.StartSpan(_testId))
                {
                    // Sample: TraceOutgoingClientFactory
                    IHttpClientFactory clientFactory = host.Services.GetRequiredService <IHttpClientFactory>();
                    var httpClient = clientFactory.CreateClient("tracesOutgoing");
                    // Any code that makes outgoing requests.
                    var response = await httpClient.GetAsync("http://weather.com/");

                    // End sample
                }

                var trace = TraceEntryPolling.Default.GetTrace(_testId, _startTime);

                TraceEntryVerifiers.AssertParentChildSpan(trace, _testId, "http://weather.com/");
            }
            finally
            {
                if (host is object)
                {
                    await host.StopAsync();
                }
            }
        }
Esempio n. 16
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        public async Task TraceSingleAsync()
        {
            IHost host = null;

            try
            {
                host = TroubleshootingHostBuilder.CreateHostBuilder().Build();
                await host.StartAsync();

                // Sample: SingleContext
                ITraceContext  traceContext  = new SimpleTraceContext(null, null, true);
                var            tracerFactory = host.Services.GetRequiredService <Func <ITraceContext, IManagedTracer> >();
                IManagedTracer tracer        = tracerFactory(traceContext);
                ContextTracerManager.SetCurrentTracer(tracer);
                // End sample

                // Let's just start a span with the test ID so we can find it faster.
                // But we don't show this in sample code.
                using (tracer.StartSpan(_testId))
                {
                    // Sample: RunIn
                    IManagedTracer currentTracer = host.Services.GetRequiredService <IManagedTracer>();
                    currentTracer.RunInSpan(
                        () => Console.WriteLine("Using Cloud Trace from a non ASP.NET Core app"),
                        "testing_tracing");
                    // End sample
                }

                var trace = TraceEntryPolling.Default.GetTrace(_testId, _startTime);
                TraceEntryVerifiers.AssertParentChildSpan(trace, _testId, "testing_tracing");
            }
            finally
            {
                if (host is object)
                {
                    await host.StopAsync();
                }
            }
        }
        /// <summary>
        /// Handle a DialogFlow conversation request.
        /// An instance of this class handles just one conversation,
        /// which is tracked external to this class, using the DialogFlow sessionID.
        /// </summary>
        /// <param name="req">Webhook request</param>
        /// <returns>Webhook response</returns>
        public async Task <WebhookResponse> HandleAsync(WebhookRequest req)
        {
            // Use reflection to find the handler method for the requested DialogFlow intent
            var intentName = req.QueryResult.Intent.DisplayName;
            var handler    = FindHandler(intentName);

            if (handler == null)
            {
                return(new WebhookResponse
                {
                    FulfillmentText = $"Sorry, no handler found for intent: {intentName}"
                });
            }

            try
            {
                using (_tracer.StartSpan(intentName))
                {
                    // Call the sync handler, if there is one. If not, call the async handler.
                    // Otherwise, it's an error.
                    return(handler.Handle(req) ??
                           await handler.HandleAsync(req) ??
                           new WebhookResponse
                    {
                        FulfillmentText = "Error. Handler did not return a valid response."
                    });
                }
            }
            catch (Exception e) when(req.QueryResult.Intent.DisplayName != "exception.throw")
            {
                _exceptionLogger.Log(e);
                var msg = (e as GoogleApiException)?.Error.Message ?? e.Message;

                return(new WebhookResponse
                {
                    FulfillmentText = $"Sorry, there's a problem: {msg}"
                });
            }
        }
Esempio n. 18
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        public async Task TraceSingleAsync()
        {
            IHost host = null;
            // Hides that we use different classes so that we can have multiple CreateHostBuilder methods.
            Func <IHostBuilder> CreateHostBuilder = DefaultHostBuilder.CreateHostBuilder;

            try
            {
                // Sample: Start
                host = CreateHostBuilder().Build();
                await host.StartAsync();

                // End sample

                ITraceContext  traceContext  = new SimpleTraceContext(null, null, true);
                var            tracerFactory = host.Services.GetRequiredService <Func <ITraceContext, IManagedTracer> >();
                IManagedTracer tracer        = tracerFactory(traceContext);
                ContextTracerManager.SetCurrentTracer(tracer);

                using (tracer.StartSpan(_testId))
                {
                    IManagedTracer currentTracer = host.Services.GetRequiredService <IManagedTracer>();
                    currentTracer.RunInSpan(
                        () => Console.WriteLine("Using Cloud Trace from a non ASP.NET Core app"),
                        "testing_tracing");
                }

                var trace = TraceEntryPolling.Default.GetTrace(_testId, _startTime);
                TraceEntryVerifiers.AssertParentChildSpan(trace, _testId, "testing_tracing");
            }
            finally
            {
                if (host is object)
                {
                    await host.StopAsync();
                }
            }
        }
Esempio n. 19
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        public async Task <IActionResult> PostAsync(
            [FromBody] WeatherForecastModel model,
            CancellationToken cancellationToken)
        {
            using (_tracer.StartSpan("save"))
            {
                try
                {
                    //These two lines are for example
                    var traceHeaderHandler = new TraceHeaderPropagatingHandler(() => _tracer);
                    var response           = TraceOutgoing(traceHeaderHandler);

                    await _storageLogic.SaveToFileAsync(model, cancellationToken);

                    return(Ok());
                }
                catch (Exception e)
                {
                    _logger.LogError(e, "Service Error, attention!!!!");
                    return(StatusCode(StatusCodes.Status500InternalServerError,
                                      e.Message));
                }
            }
        }