Functions can reference external NuGet packages in the exact same way that .NET applications do.

It should take a few minutes to create. The Azure Functions Team works really hard to fix the issue sooner rather than later. Aka, I haven’t got a clue, I removed all log.info(“informational message”) from my function code.

Once the Azure Function is running and has started logging, you can use Analytics in Application Insights for querying your structured logs using the Azure Log Analytics Query Language (a.k.a. Configure Application Insights Logging.

However, fast-forward to today and AppInsights has become an invaluable tool for developers and support staff alike. Run your app in debug mode or deploy it live. There is a Functions-specific version of the Application Insights SDK that you can use to send custom telemetry data from your functions to Application Insights: Microsoft.Azure.WebJobs.Logging.ApplicationInsights. When testing or running your functions in production, you can examine the live stream telemetry.

Functions supports built-in logging features using TraceWriter instance. As can be seen in the top chart, it can be done, but I jump ahead of myself. In my function I have the following log code line: This code line generates a log with the event grid topic and subject that triggered my Function. In the meantime, I prefer to have some telemetry over none. By default, it will create an Application Insight instance belonging to your Function App. This key is your common point of reference. // Entry will be written on this level. The Scenario is that a message is recieve via API Management, sent to a Azure Function that publishes the message on a topic, a second Azure Function reads the published message and publishes the message on a second topic, a third Azure Function recieves the message and sends the message over http to a Logic App that represents a “3:e party system”. the resources allocated to the Functions; how many successful and failed requests have been processed by the Function instance. Basic sample function might look like: View the code on Gist.

So how to do manage the logs for all these. With Application Insights, you instrument your functions to enable logging. https://azure.microsoft.com/en-us/services/functions/, https://github.com/projectkudu/kudu/wiki/REST-API, https://azure.microsoft.com/en-us/services/application-insights/, Deploying Functions with ARM templates and inline code. And, of course, managing all these events in one central place, your AppInsights dashboard. As it’s still in preview, features around this may change over time until GA. AppInsights is highly customizable and gives you the flexibility to create your own fully tailored views. The Application Insights GUI is very useful for drilling into telemetry to find specific items, but less useful if you need to explore properties across the entire set. Fortunately, AppInsights has recently been consolidated to Functions as a preview to overcome these limitations. If you don't have AppInsights running on Azure already, you can spin an new one up from the portal. Kusto). In hindsight, the reference docs section of the App Insights wiki page was useful. If you would like to contact me, please fill out the form below.

So let’s look in to how this manifests in a rather complex scenario. mainly because I have implemented a dependency telemetry and so it is duplication. Out of box logs is sent to Application Insights via the ILogger object so let’s take a short look at the interface, it contains 3 different operations, Log that logs some information, there are different types and extensions on this to make it easier to use. August 19, 2019 This is it. Always leverage the Application Insights capability, which is seamlessly integrated with Azure Functions. This key can be shared by many applications and Functions.

Furthermore, you can see the traces and look the information you set using statements from the Ilogger, which Azure Functions natively supports. Below I show some sample queries for the structure logging in the code above. It displays as expected when you deploy your Functions to Azure. There is a downside to this approach and that's the fact that AppInsights lack the full integration with Functions.

However, it has the maximum limit of 1000 records. Simply create an extension method like: Once everything is done, deploy the Function again and run Functions several times. It offers you the, 1 In the Diagnostics settings page, under Category details and log, choose FunctionAppLogs.The FunctionAppLogstable contains the desired logs.