first coomit

lib/persistence/models.go

@@ -0,0 +1,8 @@
+package persistence
+
+import "gopkg.in/mgo.v2/bson"
+
+type Player struct{
+	ID bson.ObjectId `bson:"_id"`
+	Name string
+}

lib/persistence/mongolayer/mongolayer.go

@@ -0,0 +1,59 @@
+package mongolayer
+
+import (
+	"gopkg.in/mgo.v2"
+	"gopkg.in/mgo.v2/bson"
+	"nbarest/lib/persistence"
+)
+
+const(
+	DB="myplayers"
+	PLAYER="players"
+)
+
+func NewMongoDBLayer(connection string)(persistence.DatabaseHandler,error){
+	s,err:=mgo.Dial(connection)
+	if err!=nil{
+		panic(err)
+	}
+	return &MongoDBLayer{session: s},err
+}
+
+type MongoDBLayer struct {
+	session *mgo.Session
+}
+
+func (m *MongoDBLayer) AddPlayer(p persistence.Player)([]byte,error){
+	s:=m.getFreshSession()
+	defer s.Close()
+	if !p.ID.Valid(){
+		p.ID=bson.NewObjectId()
+	}
+	return []byte(p.ID),s.DB(DB).C(PLAYER).Insert(p)
+
+}
+func (m *MongoDBLayer) FindPlayer(id []byte)(persistence.Player,error){
+	s:=m.getFreshSession()
+	defer s.Close()
+	p:= persistence.Player{}
+	err:=s.DB(DB).C(PLAYER).FindId(bson.ObjectId(id)).One(&p)
+	return p,err
+}
+func (m *MongoDBLayer) FindPlayerByName(name string)(persistence.Player,error){
+	s:=m.getFreshSession()
+	defer s.Close()
+	p:= persistence.Player{}
+	err:=s.DB(DB).C(PLAYER).Find(bson.M{"name": name}).One(&p)
+	return p,err
+}
+func (m*MongoDBLayer) FindAllAvailablePlayers()([]persistence.Player,error){
+	s:=m.getFreshSession()
+	defer s.Close()
+	ps:=[]persistence.Player{}
+	err:=s.DB(DB).C(PLAYER).Find(nil).All(&ps)
+	return ps,err
+}
+
+func (m *MongoDBLayer) getFreshSession() *mgo.Session{
+	return m.session.Copy()
+}

lib/persistence/persistence.go

@@ -0,0 +1,9 @@
+package persistence
+
+
+type DatabaseHandler interface {
+	AddPlayer(Player)([]byte,error)
+	FindPlayer([]byte)(Player,error)
+	FindPlayerByName(string)(Player,error)
+	FindAllAvailablePlayers()([]Player,error)
+}