How to initialize a handler about go-micro

[crackcomm]

(example)

type Handler struct {
    test string
}

server.Handle(
    server.NewHandler(
        &Handler{test: "initialized"},
    ),
)

[jbrodriguez]

Thank you @crackcomm , but what if I need to run some code to initialize the variables (rather than a static initialization as in the example) ?

[crackcomm]

Then use a function.

package handler

type Handler struct {
    // ...
}

// New - Constructs a new Handler.
func New(opts interface{}) *Handler {
    // do the stuff (dialing database probably does not belong here)
    return &Handler{}
}

server.Handle(
    server.NewHandler(handler.New("initialized")),
)

[asim]

Łukasz's above example works fine for this. Alternatively you can use the sync package Once type https://golang.org/pkg/sync/#Once.Do. There's no clean one time startup initialisation as of yet. It was purposely kept out to keep things simple at first and see where the use cases came in for other things.

I think we'll potentially add the notion of before/after functions for start, stop and handler requests.

[jbrodriguez]

ok, thanks @crackcomm and @asim !