// LoadConfig creates a config object by specified config file.
func (cfg *PolarisConfig) LoadConfig() bool {
cfgFile, err := goconfig.LoadConfigFile(cfg.CfgFile)
if err != nil {
log.Error("Failed to load config file：", cfg.CfgFile, ":", err)
return false
}
cfg.DirStatic = cfgFile.MustValue("system", "dir_public", "public")
cfg.DirTemplate = cfgFile.MustValue("system", "dir_template", "view")
cfg.DirLog = cfgFile.MustValue("system", "dir_log", ".")
cfg.TempExtension = cfgFile.MustValue("system", "tpl_extension", ".tpl")
cfg.TempEncoding = cfgFile.MustValue("system", "tpl_encoding", "UTF-8")
cfg.SessionStore = cfgFile.MustValue("session", "session_store", "redis")
cfg.SessionName = cfgFile.MustValue("session", "session_name", "my_session")
cfg.SessionMask = cfgFile.MustValue("session", "session_mask", "")
cfg.url = map[string]string{
"RedirectUrl": cfgFile.MustValue("system", "RedirectUrl", "/new-login"),
"RedirectParam": cfgFile.MustValue("system", "RedirectParam", "new-next"),
}
cfg.Port = cfgFile.MustInt("system", "port", 3000)
cfg.Redis = &RedisConfig{
Size: cfgFile.MustInt("redis", "redis_maxidel", 10),
Network: cfgFile.MustValue("redis", "redis_network", "tcp"),
Address: cfgFile.MustValue("redis", "redis_address", "localhost:6379"),
Password: cfgFile.MustValue("redis", "redis_password", ""),
DB: cfgFile.MustValue("redis", "redis_DB", "0"),
}
cfg.Database = DBConfig{
Type: cfgFile.MustValue("database", "db_type", "mssql"),
Driver: "",
Host: cfgFile.MustValue("database", "db_server", "localhost"),
Port: cfgFile.MustValue("database", "db_port", "1433"),
Database: cfgFile.MustValue("database", "db_database", "temdb"),
User: cfgFile.MustValue("database", "db_user", "sa"),
Password: cfgFile.MustValue("database", "db_password", ""),
Verbose: cfgFile.MustBool("database", "db_verbose", true),
LogFile: cfgFile.MustValue("database", "db_log", ""),
}
cfg.DBType = cfg.Database.Driver
cfg.CfgHandle = cfgFile
// Add file log
if len(cfg.DirLog) > 0 {
year, month, day := time.Now().Date()
cfg.LogFile = cfg.DirLog + "/" + fmt.Sprintf("app_%04d%02d%02d.log", year, month, day)
cfg.LogHandle, _ = os.OpenFile(cfg.LogFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if cfg.LogHandle != nil {
log.AddLogger("file", cfg.LogHandle, log.ALL)
}
}
return true
}
func (egn *DBEngine) Close() bool {
if egn != nil {
err := egn.Db.Close()
if err != nil {
log.Error("Failed to close DB connecttion : " + err.Error())
return false
}
return true
}
return true
}
// InitDB initialize a connection to specified database
func (conf *DBConfig) InitDB() *DBEngine {
// get driver
dialect, driver := dialectAndDriver(conf.Type)
conf.Driver = driver
strDSN := conf.String()
if strDSN == "" {
log.Error("Invalid DSN has been provided : " + strDSN)
return nil
}
// log.Debug("[" + driver + "] ==> " + strDSN)
// open connection
db, err := sql.Open(driver, strDSN)
if err != nil {
log.Error("Error connecting to db: " + err.Error())
return nil
}
// fmt.Printf("db = %#v\n", db)
// dbEngine := &gorp.DbMap{Db: db, Dialect: dialect}
dbEngine := &DBEngine{DbMap: gorp.DbMap{Db: db, Dialect: dialect}}
// open SQL log or not
if conf.Verbose {
if len(conf.LogFile) > 0 {
sql_log, err := os.OpenFile(conf.LogFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err == nil {
dbEngine.TraceOn("[SQL]", stdlog.New(sql_log, "sql", stdlog.Lmicroseconds))
} else {
dbEngine.TraceOn("[SQL]", log.GetLogger("file"))
}
} else {
dbEngine.TraceOn("[SQL]", log.GetLogger("file"))
}
} else {
dbEngine.TraceOff()
}
conf._ready = true
return dbEngine
}
func (app *PolarisApplication) RotateLog() bool {
config := app.Config.GetBasicConfig()
// get new log
year, month, day := time.Now().Date()
new_log := config.DirLog + "/" + fmt.Sprintf("app_%04d%02d%02d.log", year, month, day)
new_handle, err := os.OpenFile(new_log, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
log.Error("error opening file: %v", err)
return false
}
// replace it
if config.LogHandle != nil {
config.LogHandle.Close()
}
config.LogHandle = new_handle
config.LogFile = new_log
return true
}
// NewApp creates a application object with some basic default middleware. It's based on ClassicMartini.
// Classic also maps martini.Routes as a service.
func NewApp(cfg Config, newUser func() sessionauth.User) *PolarisApplication {
// Create config object
if !cfg.LoadConfig() {
log.Error("Failed to init config object")
return nil
}
config := cfg.GetBasicConfig()
log.Debug("Application started......")
// create router object
rtr := martini.NewRouter()
// create matini object
server := martini.New()
// replace log for testing
server.Map((*log.LevelBasedLogger)(nil))
server.Use(Logger())
server.Use(martini.Recovery())
server.Use(martini.Static(config.DirStatic))
server.MapTo(rtr, (*martini.Routes)(nil))
server.Action(rtr.Handle)
app := &PolarisApplication{server, rtr, cfg, nil, nil}
log.Debug("Add middleware -- martini-contrib/render......")
app.Use(render.Renderer(render.Options{
Directory: config.DirTemplate,
Extensions: []string{config.TempExtension},
Charset: config.TempEncoding,
}))
log.Debug("Add middleware -- martini-contrib/sessions......")
if "redis" == strings.ToLower(strings.TrimSpace(config.SessionStore)) {
var err error
log.Debug("Connect to redis......" + config.Redis.Address)
if app.Store == nil {
app.Store, err = redistore.NewRediStoreWithDB(
config.Redis.Size,
config.Redis.Network,
config.Redis.Address,
config.Redis.Password,
config.Redis.DB,
[]byte(config.SessionMask),
)
if err != nil {
log.Error("Failed to connect to redis : " + err.Error())
return nil
}
}
app.Use(sessions.Sessions(config.SessionName, app.Store))
} else {
app.Use(sessions.Sessions(config.SessionName, sessions.NewCookieStore([]byte(config.SessionMask))))
}
if len(config.Database.Database) > 0 {
log.Debug("Connect to databse......[" + config.Database.Database + "]")
// ensure the connection can be made corrrectly, connect to the dabase when starting
app.DbEngine = config.Database.InitDB()
if app.DbEngine == nil {
log.Error("Failed to connect to database (" + config.Database.Database + ")")
return nil
}
log.Debug("Add middleware -- gorp......")
app.Use(config.Database.MartiniHandler())
}
log.Debug("Add middleware -- martini-contrib/sessionauth......")
app.Use(sessionauth.SessionUser(newUser))
sessionauth.RedirectUrl = config.url["RedirectUrl"]
sessionauth.RedirectParam = config.url["RedirectParam"]
log.Debug("Add User defined router mapping......")
if !cfg.RoterMap(app) {
log.Error("Failed to add Roter Mapping")
return nil
}
return app
}
