Telemetry and Monitory with Applications Insights and Dynamics 365 F&O

With version 10.0.39 Applications Insights integrations is GA. Hence, here is a very simple example how to start using this great feature and start monitoring the performance of your application. 
For more about D365FO and Application Insights integration: 

• Monitoring and telemetry using Application Insights - Finance & Operations | Dynamics 365 | Microsoft Learn
• Dynamics 365 Finance and Operations - Monitoring and Telemetry using Application Insights -TechTalk (youtube.com)

In this example we will monitor the execution time of a batch job. In particular, we will use a metric to analyze the execution over time. 

// Create a class file and paste this code

class SlowBatchJobClass extends RunBaseBatch implements BatchRetryable
{
    [SysEntryPointAttribute]
    public void run()
    {
        int maxWaitInSeconds = 20; // Maximum wait time in seconds
        SysApplicationInsightsTelemetryLogger logger = SysApplicationInsightsTelemetryLogger::instance(); // get logger instance
        // Record the start time
        utcdatetime startTime = DateTimeUtil::utcNow();

        // Your logic here
        info("Executing batch job logic...");

        // Simulate random wait time
      
        RandomGenerate            randomGenerate;
        randomGenerate = RandomGenerate::construct();

        int waitTime = randomGenerate.randomInt(1, maxWaitInSeconds);

        info(strFmt("Waiting for %1 seconds...", waitTime));
        System.Threading.Thread::sleep(waitTime * 1000); // Convert seconds to milliseconds

        // Calculate the job execution time
        utcdatetime endTime = DateTimeUtil::utcNow();
        
        int64 executionTime = DateTimeUtil::getDifference(endTime, startTime);

        // Log job execution time
        logger.trackMetric("SlowBatchJobClass_ExecutionTime", executionTime); 

        info("Batch job completed successfully.");
    }

    public boolean isRetryable()
    {
        return true; // Indicates that the batch job is retryable
    }
}

The metric is sent to Application Insights by calling the logMetric method from the

SysGlobalTelemetry class. 

Note: No previous configuration/creation of the metric is necessary. 

After a few executions of the Batch Job the metric automatically appears in Application Insights