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Golang RESTful with MongoDB
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// created by : Narate Ketram | |
package main | |
import ( | |
"fmt" | |
"github.com/ant0ine/go-json-rest" | |
"labix.org/v2/mgo" | |
"labix.org/v2/mgo/bson" | |
"net/http" | |
) | |
type Person struct { | |
UserName string | |
FullName string | |
Phone string | |
Age int | |
Gender string | |
} | |
type Err struct { | |
ErrCode int | |
ErrMsg string | |
} | |
func FindUser(user string) (Person,error) { | |
session, err := mgo.Dial("127.0.0.1") | |
p := Person{} | |
if err != nil { | |
return p, err | |
} | |
defer session.Close() | |
c := session.DB("godb").C("people") | |
if err = c.Find(bson.M{"username":user}).One(&p); err != nil { | |
return p, err | |
} | |
return p, nil | |
} | |
func AddUser(p Person) (err_msg Err) { | |
session, err := mgo.Dial("127.0.0.1") | |
if err != nil { | |
err_msg = Err{1, "connection failed"} | |
} | |
defer session.Close() | |
c := session.DB("godb").C("people") | |
tp := Person{} // temp person :P | |
// if not found add new user | |
// else return error user already exist | |
if err := c.Find(bson.M{"username":&p.UserName}).One(&tp);err != nil { | |
err_msg = Err{0, "done"} | |
if err := c.Insert(&p); err != nil { | |
err_msg = Err{1, "insert failed"} | |
} | |
} else { | |
err_msg = Err{1, "user already exist"} | |
} | |
return | |
} | |
func GetUser(w *rest.ResponseWriter, req *rest.Request) { | |
name, err := FindUser(req.PathParam("name")) | |
if err != nil { | |
err_msg := Err{1,"Not found"} | |
w.WriteJson(&err_msg) | |
} else { | |
w.WriteJson(&name) | |
} | |
} | |
func NewUser(w *rest.ResponseWriter, req *rest.Request) { | |
p := Person{} | |
err_msg := Err{} | |
if err := req.DecodeJsonPayload(&p); err != nil { | |
rest.Error(w, err.Error(), http.StatusInternalServerError) | |
return | |
} else { | |
err_msg = AddUser(p) | |
} | |
w.WriteJson(&err_msg) | |
} | |
func main() { | |
handler := rest.ResourceHandler{} | |
handler.SetRoutes( | |
rest.Route{"Get","/u/:name", GetUser}, | |
rest.Route{"Post","/new", NewUser}, | |
) | |
fmt.Println("Run on 127.0.0.1:8090") | |
http.ListenAndServe(":8090", &handler) | |
} | |
if err := c.Find(bson.M{"username":&p.UserName}).One(&tp);err != nil {
I wonder if there are other ways to query for existance of an object. I tried using .Count() and it returns "n, err" 0, nil on everything I throw at it.
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thank you!!