Creating a basic plugin for Microsoft Dynamics 365 CRM involves writing a class in C# that implements the IPlugin interface. Here's an example of a simple basic plugin:

public class BasicPlugin : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

            //Business logic
        }
    }

Once in this form, the plugin can be registered and will work. However, typically, the developer also checks the correctness of the input parameters (whether the plugin is registered correctly):

public class BasicPlugin : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

            if (context.MessageName == "Create" &&
                context.PrimaryEntityName == "account" &&
                context.Stage == 40 /*Post operation*/)
            {
                //Business logic
            }
        }
    }

Additionally, the services for CRM interaction require initialization.

public class BasicPlugin : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

            if (context.MessageName == "Create" &&
                context.PrimaryEntityName == "account" &&
                context.Stage == 40 /*Post operation*/)
            {
                ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));

                IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
                IOrganizationService orgService = serviceFactory.CreateOrganizationService(context.UserId);

                //Business logic
            }
        }
    }

When scaling a system, a necessity arises to create new plugins and modify existing ones. One of the crucial aspects of this process is maintaining clean code. What problems can arise with such an approach?

• Repetition of technical code.
• Context checks that can be missed (which can be critical if the plugin is not registered correctly).
• Technical code distracts attention from the main business logic.

All the drawbacks mentioned above can be addressed by creating a base class for plugins, which will handle service initialization and necessary checks and eliminate code repetition.