initial structure

db/db.go

@@ -0,0 +1,30 @@
+package database
+
+import mgo "gopkg.in/mgo.v2"
+
+type Db struct {
+	Users    *mgo.Collection
+	Planets  *mgo.Collection
+	Galaxies *mgo.Collection
+}
+
+func New(url string, databaseName string) (*Db, error) {
+	session, err := mgo.Dial("mongodb://" + url)
+	if err != nil {
+		return nil, err
+	}
+	//defer session.Close()
+
+	// Optional. Switch the session to a monotonic behavior.
+	session.SetMode(mgo.Monotonic, true)
+
+	// Optional. Switch the session to a monotonic behavior.
+	session.SetMode(mgo.Monotonic, true)
+
+	db := Db{}
+	db.Users = session.DB(databaseName).C("users")
+	db.Planets = session.DB(databaseName).C("planets")
+	db.Galaxies = session.DB(databaseName).C("galaxies")
+
+	return &db, nil
+}