Require a lock on the restart process to avoid double restarts causing unexpected behavior

server/environment.go

@@ -31,6 +31,13 @@ type Environment interface {
 	// not be returned.
 	Stop() error
 
+	// Restart a server instance. If already stopped the process will be started. This function
+	// will return an error if the server is already performing a restart process as to avoid
+	// unnecessary double/triple/quad looping issues if multiple people press restart or spam the
+	// button to restart.
+	Restart() error
+	IsRestarting() bool
+
 	// Waits for a server instance to stop gracefully. If the server is still detected
 	// as running after seconds, an error will be returned, or the server will be terminated
 	// depending on the value of the second argument.