/
main.go
75 lines (67 loc) · 1.78 KB
/
main.go
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package main
import (
"encoding/json"
"github.com/gorilla/mux"
"github.com/rs/cors"
"gopkg.in/mgo.v2"
"io/ioutil"
"net/http"
"os"
"time"
)
type Scrap struct {
Text string `json:"text" bson:"text"`
CreatedAt time.Time `json:"createdAt" bson:"created_at"`
}
var scraps *mgo.Collection
func main() {
session, err := mgo.Dial("mongo:27017")
if err != nil {
os.Exit(1)
}
defer session.Close()
session.SetMode(mgo.Monotonic, true)
scraps = session.DB("app").C("scraps")
router := mux.NewRouter()
router.HandleFunc("/scraps", saveScrap).
Methods("POST")
router.HandleFunc("/scraps", readScrap).
Methods("GET")
http.ListenAndServe(":8080", cors.AllowAll().Handler(router))
}
func saveScrap(w http.ResponseWriter, r *http.Request) {
data, err := ioutil.ReadAll(r.Body)
if err != nil {
responseError(w, err.Error(), http.StatusBadRequest)
return
}
scrap := &Scrap{}
err = json.Unmarshal(data, scrap)
if err != nil {
responseError(w, err.Error(), http.StatusBadRequest)
return
}
scrap.CreatedAt = time.Now().UTC()
if err := scraps.Insert(scrap); err != nil {
responseError(w, err.Error(), http.StatusInternalServerError)
return
}
responseJSON(w, scrap)
}
func responseError(w http.ResponseWriter, message string, code int) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(code)
json.NewEncoder(w).Encode(map[string]string{"error": message})
}
func responseJSON(w http.ResponseWriter, data interface{}) {
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(data)
}
func readScrap(w http.ResponseWriter, r *http.Request) {
result := []Scrap{}
if err := scraps.Find(nil).Sort("-created_at").All(&result); err != nil {
responseError(w, err.Error(), http.StatusPreconditionFailed)
} else {
responseJSON(w, result)
}
}