Unobtrusively integrate perf counters into ASP.NET MVC by using action filter attributes.
Step 0. - Describe the things you intend to track in terms of perfmon counters. Be sure to understand the different types of performance counters available. Check out the sample web app to see how a basic perf counter is built.
Step 1. - Reference MvcPerfmon library in the target web app
Step 2. - Register IPerfCounterUtility as a singleton in your service locator. Note there is a mock implementation that allows you to disable monitoring.
Step 3. - Ensure your service locator provides dependency injection for ActionFilterAttributes. In the sample web app Autofac is used.
Step 4. - In the Global.asax.cs bootstrap the perf counter utility by passing it a list of performance metrics to be tracked. If they exist, they will be preserved. If they do not exist, they will be created at application startup.
Step 5.- Implement custom filter. Extend the MvcPerformanceTrackerAttribute and add your custom code for what you want to track.
Step 6. - Decorate controllers/actions with your custom filter.
This design registers custom perf counters on application startup and it may require elevated privileges.
