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db.go
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db.go
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package main
import (
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
)
func mongoDbInsert(object interface{}, db string, collection string) error {
// Connect to database, https://labix.org/mgo
// 'database' is a global const declared in main.go
session, err := mgo.Dial(database)
if err != nil {
panic(err)
}
// Add connection close to function exit stack
defer session.Close()
// Access the appropriate collection
c := session.DB(db).C(collection)
err = c.Insert(object)
if err != nil {
return err
}
return nil
}
// User related functions
func dbFindUser(username string, db string, collection string) User {
session, err := mgo.Dial(database)
if err != nil {
panic(err)
}
defer session.Close()
user := User{}
c := session.DB(db).C(collection)
err = c.Find(bson.M{"username": username}).One(&user)
if err != nil && err != mgo.ErrNotFound {
panic(err)
}
return user
}
func dbFindAndUpdateUser(username string, db string, collection string) error {
session, err := mgo.Dial(database)
if err != nil {
panic(err)
}
defer session.Close()
user := User{}
c := session.DB(db).C(collection)
change := mgo.Change{
Update: bson.M{"$inc": bson.M{"kappacount": 1}},
ReturnNew: false,
}
_, err = c.Find(bson.M{"username": username}).Apply(change, &user)
if err != nil {
panic(err)
}
return nil
}
func dbFindTotalKappa(db string, collection string) []User {
session, err := mgo.Dial(database)
if err != nil {
panic(err)
}
defer session.Close()
// have to use type matching document
var kappas []User
c := session.DB(db).C(collection)
err = c.Find(nil).Select(bson.M{"kappacount": 1}).All(&kappas)
if err != nil && err != mgo.ErrNotFound {
panic(err)
}
return kappas
}