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| package main | |
| import ( | |
| "encoding/json" | |
| "fmt" | |
| "html/template" | |
| "net/http" | |
| "os" | |
| ) | |
| var beersPage = `<!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Beer demo</title> | |
| </head> | |
| <body> | |
| <h1>{{.BeerName}}</h1> | |
| <h2>{{.BeerStyle}}</h2> | |
| <p>{{.BeerDescription}}</p> | |
| </body> | |
| </html>` | |
| type Beer struct { | |
| BeerName string | |
| BeerStyle string | |
| BeerDescription string | |
| } | |
| func handler(w http.ResponseWriter, r *http.Request) { | |
| beer_url := os.Getenv("BEER_URL") | |
| res, err := http.Get(beer_url) | |
| if err != nil { | |
| http.Error(w, err.Error(), 500) | |
| return | |
| } | |
| defer res.Body.Close() | |
| b := &Beer{} | |
| // decoding request body | |
| if err := json.NewDecoder(res.Body).Decode(b); err != nil { | |
| http.Error(w, err.Error(), 500) | |
| return | |
| } | |
| tmpl, err := template.New("beers").Parse(beersPage) | |
| if err != nil { | |
| http.Error(w, err.Error(), 500) | |
| return | |
| } | |
| err = tmpl.Execute(w, b) | |
| if err != nil { | |
| http.Error(w, err.Error(), 500) | |
| return | |
| } | |
| } | |
| func main() { | |
| http.HandleFunc("/", handler) | |
| fmt.Println("Listening on: http://localhost:8080") | |
| http.ListenAndServe(":8080", nil) | |
| } |
rusenask
commented
Jan 17, 2018
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