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package main | |
import ( | |
"github.com/codegangsta/negroni" | |
"github.com/gorilla/context" | |
"github.com/unrolled/render" | |
"labix.org/v2/mgo" | |
"labix.org/v2/mgo/bson" | |
"log" | |
"net/http" | |
"os" | |
) | |
type key int | |
const db key = 0 | |
func GetDb(r *http.Request) *mgo.Database { | |
if rv := context.Get(r, db); rv != nil { | |
return rv.(*mgo.Database) | |
} | |
return nil | |
} | |
func SetDb(r *http.Request, val *mgo.Database) { | |
context.Set(r, db, val) | |
} | |
type Site struct { | |
Env string | |
Id bson.ObjectId `bson:"_id"` | |
Name string `bson:"name"` | |
} | |
func getSite(db *mgo.Database) *Site { | |
var aSite Site | |
sites := db.C("COLLECTION__NAME") | |
err := sites.Find(bson.M{"name": "some site name"}).One(&aSite) | |
if err != nil { | |
log.Print(err) | |
} | |
aSite.Env = os.Getenv("APP_ENV") | |
return &aSite | |
} | |
func MongoMiddleware() negroni.HandlerFunc { | |
database := os.Getenv("DB_NAME") | |
session, err := mgo.Dial("127.0.0.1:27017") | |
if err != nil { | |
panic(err) | |
} | |
return negroni.HandlerFunc(func(rw http.ResponseWriter, r *http.Request, next http.HandlerFunc) { | |
reqSession := session.Clone() | |
defer reqSession.Close() | |
db := reqSession.DB(database) | |
SetDb(r, db) | |
next(rw, r) | |
}) | |
} | |
func main() { | |
r := render.New(render.Options{ | |
Layout: "index", | |
Delims: render.Delims{"[[", "]]"}, | |
}) | |
mux := http.NewServeMux() | |
mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) { | |
db := GetDb(req) | |
site := getSite(db) | |
r.HTML(w, http.StatusOK, "home", site) | |
}) | |
n := negroni.Classic() | |
n.Use(MongoMiddleware()) | |
n.UseHandler(mux) | |
n.Run(":3200") | |
} |
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