29/Mar 2015
3 min. read
Overview A common problem people new to Go tend to run into is managing goroutines. Starting a goroutine is easy but how do you guarantee it closes gracefully when you are ready to exit? All code for this example lives here. First, lets create a struct that will manage our goroutine. In this case it’s just going to be one but there are no restrictions here. //App is an example struct that will run goroutines type App struct { wg *sync.WaitGroup //allow us to wait for close done chan bool Data chan string } func NewApp() (app *App) { app = &App{ wg: &sync.WaitGroup{}, done: make(chan bool, 1), Data: make(chan string, 100), } return app With this we can now add a few methods to start and run our goroutine.
19/Mar 2015
2 min. read
Overview After using death for awhile I started to run into issues closing objects. Mainly that some poorly written code would never close and the app would hang and require me to force kill the app. This seemed like a perfect oppurtunity to use go routines and channels to solve a relatively complex threading problem. What I really want is parallel shutdown with an overall timeout that will shutdown even if something fails.