In this article, we will try to understand two crucial Go concepts - mux and Handler. - go router
Let’s rewrite our example with timeout handler. Don’t forget to increase time.sleep and timeout for +1 sec each, otherwise there will be still no response:
Let’s start with types. First we need a router itself. It should have a map that will store registered URL pattern and all information that we want to apply to it: Next let’s define what is a routeRules. In case of REST we want to store registered HTTP methods and related handlers:Now we want our router to has a/* method - string, e.g. POST, GET, PUT pattern - URL path for which we want to register a handler f - handler */ func HandleFunc) { rules, exists :=r.routes[pattern] if !exists { rules=routeRules{methods: make} r.routes[pattern]=rules } rules.methods[method]=http.HandlerFunc }interface.
Awesome. We just wrote a router that may easily register a handler for specific HTTP method. The full code looks like:
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