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urtrator/database/database_object.go

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// URTator - Urban Terror server browser and game launcher, written in
// Go.
//
// Copyright (c) 2016, Stanslav N. a.k.a pztrn (or p0z1tr0n)
// All rights reserved.
//
// Licensed under Terms and Conditions of GNU General Public License
// version 3 or any higher.
// ToDo: put full text of license here.
package database
import (
// stdlib
//"database/sql"
"fmt"
"path"
"strconv"
// local
"github.com/pztrn/urtrator/configuration"
"github.com/pztrn/urtrator/datamodels"
// Other
"github.com/jmoiron/sqlx"
_ "github.com/mattn/go-sqlite3"
)
type Database struct {
// Configuration.
cfg *configuration.Config
// Pointer to initialized database connection.
Db *sqlx.DB
}
func (d *Database) Close() {
fmt.Println("Closing database...")
// Save configuration.
// Delete previous configuration.
d.Db.MustExec("DELETE FROM configuration")
tx := d.Db.MustBegin()
for k, v := range cfg.Cfg {
cfg_item := datamodels.Configuration{}
cfg_item.Key = k
cfg_item.Value = v
tx.NamedExec("INSERT INTO configuration (key, value) VALUES (:key, :value)", &cfg_item)
}
tx.Commit()
d.Db.Close()
}
func (d *Database) Initialize(cfg *configuration.Config) {
fmt.Println("Initializing database...")
// Connect to database.
db_path := path.Join(cfg.TEMP["DATA"], "database.sqlite3")
fmt.Println("Database path: " + db_path)
db, err := sqlx.Connect("sqlite3", db_path)
if err != nil {
fmt.Println(err.Error())
}
d.Db = db
// Load configuration.
cfgs := []datamodels.Configuration{}
d.Db.Select(&cfgs, "SELECT * FROM configuration")
if len(cfgs) > 0 {
for i := range cfgs {
cfg.Cfg[cfgs[i].Key] = cfgs[i].Value
}
}
}
func (d *Database) Migrate() {
// Getting current database version.
dbver := 0
database := []datamodels.Database{}
d.Db.Select(&database, "SELECT * FROM database")
if len(database) > 0 {
fmt.Println("Current database version: " + database[0].Version)
dbver, _ = strconv.Atoi(database[0].Version)
} else {
fmt.Println("No database found, will create new one")
}
migrate_full(d, dbver)
}
func (d *Database) UpdateServers(data map[string]*datamodels.Server) {
fmt.Println("Updating servers information in database...")
raw_cached := []datamodels.Server{}
d.Db.Select(&raw_cached, "SELECT * FROM servers")
// Create map[string]*datamodels.Server once, so we won't iterate
// over slice of datamodels.Server everytime.
cached_servers := make(map[string]*datamodels.Server)
for s := range raw_cached {
mapping_item_name := raw_cached[s].Ip + ":" + raw_cached[s].Port
cached_servers[mapping_item_name] = &raw_cached[s]
}
new_servers := make(map[string]*datamodels.Server)
// Update our cached mapping.
for _, s := range data {
mapping_item_name := s.Ip + ":" + s.Port
_, ok := cached_servers[mapping_item_name]
if !ok {
fmt.Println(mapping_item_name + " not found!")
new_servers[mapping_item_name] = s
} else {
cached_servers[mapping_item_name].Ip = s.Ip
cached_servers[mapping_item_name].Port = s.Port
cached_servers[mapping_item_name].Name = s.Name
cached_servers[mapping_item_name].Players = s.Players
cached_servers[mapping_item_name].Maxplayers = s.Maxplayers
cached_servers[mapping_item_name].Ping = s.Ping
cached_servers[mapping_item_name].Map = s.Map
cached_servers[mapping_item_name].Gamemode = s.Gamemode
cached_servers[mapping_item_name].Version = s.Version
cached_servers[mapping_item_name].ExtendedConfig = s.ExtendedConfig
cached_servers[mapping_item_name].PlayersInfo = s.PlayersInfo
}
}
tx := d.Db.MustBegin()
fmt.Println("Adding new servers...")
for _, srv := range new_servers {
tx.NamedExec("INSERT INTO servers (ip, port, name, ping, players, maxplayers, gamemode, map, version, extended_config, players_info) VALUES (:ip, :port, :name, :ping, :players, :maxplayers, :gamemode, :map, :version, :extended_config, :players_info)", srv)
}
fmt.Println("Updating cached servers...")
for _, srv := range cached_servers {
tx.NamedExec("UPDATE servers SET name=:name, players=:players, maxplayers=:maxplayers, gamemode=:gamemode, map=:map, ping=:ping, version=:version, extended_config=:extended_config, players_info=:players_info WHERE ip=:ip AND port=:port", &srv)
}
tx.Commit()
fmt.Println("Done")
}