| package main |
| |
| import ( |
| "fmt" |
| "log" |
| "net/http" |
| "os" |
| ) |
| |
| const defaultAddr = ":8080" |
| |
| // main starts an http server on the $PORT environment variable. |
| func main() { |
| addr := defaultAddr |
| // $PORT environment variable is provided in the Kubernetes deployment. |
| if p := os.Getenv("PORT"); p != "" { |
| addr = ":" + p |
| } |
| |
| log.Printf("server starting to listen on %s", addr) |
| http.HandleFunc("/", home) |
| if err := http.ListenAndServe(addr, nil); err != nil { |
| log.Fatalf("server listen error: %+v", err) |
| } |
| } |
| |
| // home logs the received request and returns a simple response. |
| func home(w http.ResponseWriter, r *http.Request) { |
| log.Printf("received request: %s %s", r.Method, r.URL.Path) |
| fmt.Fprintf(w, "Hello, world!") |
| } |
