import ( "github.com/mesos/mesos-go/executor" ) type MyExecutor struct{} func (exec *MyExecutor) Registered( driver executor.ExecutorDriver, executorInfo *mesos.ExecutorInfo, frameworkInfo *mesos.FrameworkInfo) { // Executor registered with Mesos } func (exec *MyExecutor) LaunchTask( driver executor.ExecutorDriver, taskInfo *mesos.TaskInfo) { // Task launched by Mesos } func (exec *MyExecutor) KillTask( driver executor.ExecutorDriver, taskId *mesos.TaskID) { // Task killed by Mesos } func (exec *MyExecutor) FrameworkMessage( driver executor.ExecutorDriver, message string) { // Message received from Mesos framework } func (exec *MyExecutor) Shutdown( driver executor.ExecutorDriver) { // Executor shutdown } func (exec *MyExecutor) Error( driver executor.ExecutorDriver, message string) { // Error occurred } func main() { config := executor.DriverConfig{ Executor: &MyExecutor{}, } driver, err := executor.NewMesosExecutorDriver(config) if err != nil { // Error creating executor driver } defer driver.Stop(false) driver.Start() }In this example, we define a struct `MyExecutor` that implements the required functions of the `executor.Executor` interface. We then create a `DriverConfig` object with our executor object and pass it to `executor.NewMesosExecutorDriver()` to create a new driver. Finally, we call `driver.Start()` to start the driver and wait for task updates from Mesos.