This is a creation in Article, where the information may have evolved or changed. I've been working on a fairly large API project recently, including many routing rules (routes), service Interfaces (services), and processing functions (handlers). First, I noticed that the startup process of the ' main.go ' file started getting bloated. To avoid setting up a global service interface, I use a shared fabric body (struct) to bind the service interface to the handler function. For example: Main.go ' gopackage mainfunc main () {r: = gin. Default () Userrepo: = models. Newuserrepo (drives. DataStore (). C ("Users"), Userhandler: = handlers. Newuserhandler (Userrepo) r.get ("/api/v1/users", Userhandler.findall) R.run (": 8080")} ' User_handler.go ' Gotype Userhandler struct {Userrepo *models. Userrepo}func Newuserhandler (Userrepo *models. Userrepo) *userhandler {return &userhandler{Userrepo,}}func (Userhandler *userhandler) FindAll (c *gin. Context) {users, err: = UserHandler.userRepo.FindAll () if err! = nil {C.json (404, Nil) return} c.json (users) retur n} "The code works fine, but you'll find that in main.go, I'm just writing a few boot-up processes that just contain a handler function and a persisted data (repository). Writing code in this way is cumbersome and bloated. So I want to write a container with Go. I can't find a third-party library I like to solve this problem. So, come up with the following code. ' Goimport ("sync") type Container struct{mux sync. Rwmutex m map[string]interface{}}// Add Servicefunc (c *container) Add (name string, Object interface{}) {C.mux.lock () if c.m = nil {c.m = make (map[string] interface{})} C.m[name] = Object C.mux.unlock ()}//remove Servicefunc (c *container) remove (name string) Container {c.mu X.lock () Delete (C.M, name) C.mux.unlock ()}//get a Servicefunc (c *container) get (name string) (Object interface{}, BOOL) {C.mux.rlock () object, OK = C.m[name] C.mux.runlock () return object, OK} "note that each method of this code uses ' mutex lock ' to avoid container concurrency problems. Now the code can write ... "' Gofunc GetContainer () Container {c: = new (Container. Container) C.add ("User.handler", handlers. Userhandler) return C} ' now Main.go ' gofunc main () {container: = container. GetContainer () Userhandler, OK: = container. Get ("User.handler") if!ok {log. Fatal ("Service Not Found")} r.get ("/api/v1/users", Userhandler. ( *handlers. Userhandler). FindAll (),)} ' _ Sync code reference from Itsmontoya, salute to him _ now I've encapsulated the boot process very succinctly into a package. I think a person with a PHP background will refer to the [pimple] (http://pimple.sensiolabs.org/) framework when considering this syntax implementation. I have abstracted this into my own library, implemented in [here] (hTtps://github.com/ewanvalentine/vertebrae).
via:https://ewanvalentine.io/writing-a-service-container-in-go/
Author: Ewan Valentine Translator: jzhongming proofreading: Rxcai
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