353 lines
8.2 KiB
Go
353 lines
8.2 KiB
Go
/*
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* Copyright 2026 Oleg Borodin <onborodin@gmail.com>
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*
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* This work is published and licensed under a Creative Commons
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* Attribution-NonCommercial-NoDerivatives 4.0 International License.
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*
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* Distribution of this work is permitted, but commercial use and
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* modifications are strictly prohibited.
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*/
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/*
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* Copyright 2026 Oleg Borodin <onborodin@gmail.com>
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*
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* This work is published and licensed under a Creative Commons
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* Attribution-NonCommercial-NoDerivatives 4.0 International License.
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*
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* Distribution of this work is permitted, but commercial use and
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* modifications are strictly prohibited.
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*/
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/*
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* Это произведение распространяется под лицензией Creative Commons
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* Attribution-NonCommercial-NoDerivatives 4.0 International License
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*
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* Разрешается распространение, но запрещаются коммерческое использование
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* и изменения данного произведения.
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*
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* Вы можете свободно делиться, то есть копировать, распространять и передавать
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* другим лицам данное произведение при обязательном соблюдении следующих условий:
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*
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* Атрибуция: Вы должны атрибутировать произведение (указывать автора и источник)
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* в порядке, предусмотренном автором или лицензиаром.
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*
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* Некоммерческое использование: Вы не можете использовать это произведение
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* в коммерческих целях.
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*
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* Без производных произведений: Вы не можете изменять, преобразовывать или брать
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* за основу это произведение.
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*/
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package server
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import (
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"os"
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"os/signal"
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"os/user"
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"path/filepath"
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"strconv"
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"syscall"
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"mstore/app/config"
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"mstore/app/handler"
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"mstore/app/logger"
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"mstore/app/maindb"
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"mstore/app/operator"
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"mstore/app/service"
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"mstore/app/storage"
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)
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type Server struct {
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conf *config.Config
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oper *operator.Operator
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svc *service.Service
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mdb *maindb.Database
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hand *handler.Handler
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logg *logger.Logger
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stor *storage.Storage
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}
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func NewServer() (*Server, error) {
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var err error
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srv := &Server{}
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srv.logg = logger.NewLoggerWithSubject("server")
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return srv, err
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}
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func (srv *Server) Handler() *handler.Handler {
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return srv.hand
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}
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func (srv *Server) Service() *service.Service {
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return srv.svc
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}
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func (srv *Server) SetLogdir(dir string) {
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srv.conf.Logpath = dir
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}
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func (srv *Server) SetRundir(dir string) {
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srv.conf.Runpath = dir
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}
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func (srv *Server) SetDatadir(dir string) {
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srv.conf.Database.Basepath = dir
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srv.conf.Storage.Basepath = dir
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}
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func (srv *Server) SetPort(port int64) {
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srv.conf.Service.Port = port
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}
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func (srv *Server) Configure() error {
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var err error
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srv.logg.Infof("Configuration server")
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srv.conf = config.NewConfig()
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if err != nil {
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return err
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}
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err = srv.conf.ReadConfigfile()
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if err != nil {
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//srv.logg.Warningf("Error loading config file: %v", err)
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//return err
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}
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err = srv.conf.ReadX509Cert()
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if err != nil {
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return err
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}
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err = srv.conf.ReadOptions()
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if err != nil {
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return err
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}
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return err
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}
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func (srv *Server) Build() error {
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var err error
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srv.logg.Infof("Server build")
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confDump := srv.conf.String()
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srv.logg.Infof("Current server configuration is:\n%s\n", confDump)
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if srv.conf.AsDaemon {
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logdir := filepath.Dir(srv.conf.Logpath)
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srv.logg.Infof("Create log directory %s", logdir)
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err = os.MkdirAll(logdir, 0750)
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if err != nil {
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return err
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}
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rundir := filepath.Dir(srv.conf.Runpath)
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srv.logg.Infof("Create run directory %s", rundir)
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err = os.MkdirAll(rundir, 0750)
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if err != nil {
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return err
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}
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}
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// Creating database
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dbdir := srv.conf.Database.Basepath
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srv.logg.Infof("Create database directory %s ", dbdir)
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err = os.MkdirAll(dbdir, 0750)
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if err != nil {
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return err
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}
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mdb := maindb.NewDatabase(dbdir)
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srv.logg.Infof("Open main database")
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err = mdb.OpenDatabase()
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if err != nil {
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return err
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}
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srv.logg.Infof("Initialize main database")
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err = mdb.InitDatabase()
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if err != nil {
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return err
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}
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srv.mdb = mdb
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// Creating storage
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srv.logg.Infof("Create storage directory")
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datadir := srv.conf.Database.Basepath
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err = os.MkdirAll(datadir, 0750)
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if err != nil {
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return err
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}
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srv.logg.Infof("Creating storage")
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store := storage.NewStorage(datadir)
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srv.stor = store
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// Creating operator
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srv.logg.Infof("Creating operator")
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operatorParams := &operator.OperatorParams{
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MainDB: srv.mdb,
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Store: srv.stor,
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}
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srv.oper, err = operator.NewOperator(operatorParams)
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if err != nil {
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return err
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}
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// Creating handler
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srv.logg.Infof("Creating handler")
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handlerParams := &handler.HandlerParams{
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Operator: srv.oper,
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}
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srv.hand, err = handler.NewHandler(handlerParams)
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if err != nil {
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return err
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}
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// Creating service
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serviceParams := &service.ServiceParams{
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Handler: srv.hand,
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X509Cert: srv.conf.X509Cert,
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X509Key: srv.conf.X509Key,
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Address: srv.conf.Service.Address,
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Portnum: srv.conf.Service.Port,
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}
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srv.logg.Infof("Creating service")
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srv.svc, err = service.NewService(serviceParams)
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if err != nil {
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return err
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}
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// Building service
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err = srv.svc.Build()
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if err != nil {
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return err
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}
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return err
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}
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func (srv *Server) Run() error {
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var err error
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currUser, err := user.Current()
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if err != nil {
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return err
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}
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srv.logg.Infof("Server run as user %s", currUser.Username)
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svcDone := make(chan error, 1)
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// Service run
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srv.logg.Infof("Start service")
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startService := func(svc *service.Service, done chan error) {
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err = svc.Run()
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if err != nil {
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srv.logg.Errorf("Service error: %v", err)
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done <- err
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}
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}
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go startService(srv.svc, svcDone)
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sigs := make(chan os.Signal, 1)
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signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
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var signal os.Signal
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select {
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case signal = <-sigs:
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srv.logg.Infof("Services stopped by signal: %v", signal)
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srv.svc.Stop()
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case err = <-svcDone:
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srv.logg.Infof("Service stopped by service error: %v", err)
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srv.svc.Stop()
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}
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return err
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}
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func (srv *Server) PseudoFork() error {
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const successExit int = 0
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var keyEnv string = "IMX0LTSELMRF8K"
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var err error
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_, isChild := os.LookupEnv(keyEnv)
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switch {
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case !isChild:
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os.Setenv(keyEnv, "TRUE")
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procAttr := syscall.ProcAttr{}
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cwd, err := os.Getwd()
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if err != nil {
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return err
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}
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var sysFiles = make([]uintptr, 3)
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sysFiles[0] = uintptr(syscall.Stdin)
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sysFiles[1] = uintptr(syscall.Stdout)
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sysFiles[2] = uintptr(syscall.Stderr)
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procAttr.Files = sysFiles
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procAttr.Env = os.Environ()
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procAttr.Dir = cwd
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_, err = syscall.ForkExec(os.Args[0], os.Args, &procAttr)
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if err != nil {
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return err
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}
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os.Exit(successExit)
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case isChild:
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_, err = syscall.Setsid()
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if err != nil {
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return err
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}
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}
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os.Unsetenv(keyEnv)
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return err
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}
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func (srv *Server) Daemonize() error {
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var err error
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if srv.conf.AsDaemon {
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// Restart process process
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err = srv.PseudoFork()
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if err != nil {
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return err
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}
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// Redirect stdin
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nullFile, err := os.OpenFile("/dev/null", os.O_RDWR, 0)
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if err != nil {
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return err
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}
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err = syscall.Dup2(int(nullFile.Fd()), int(os.Stdin.Fd()))
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if err != nil {
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return err
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}
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// Redirect stderr and stout
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logdir := filepath.Dir(srv.conf.Logpath)
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err = os.MkdirAll(logdir, 0750)
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if err != nil {
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return err
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}
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logFile, err := os.OpenFile(srv.conf.Logpath, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0640)
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if err != nil {
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return err
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}
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err = syscall.Dup2(int(logFile.Fd()), int(os.Stdout.Fd()))
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if err != nil {
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return err
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}
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err = syscall.Dup2(int(logFile.Fd()), int(os.Stderr.Fd()))
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if err != nil {
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return err
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}
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// Write process ID
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rundir := filepath.Dir(srv.conf.Runpath)
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err = os.MkdirAll(rundir, 0750)
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if err != nil {
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return err
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}
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pidFile, err := os.OpenFile(srv.conf.Runpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0640)
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if err != nil {
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return err
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}
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defer pidFile.Close()
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currPid := os.Getpid()
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_, err = pidFile.WriteString(strconv.Itoa(currPid))
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if err != nil {
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return err
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}
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}
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return err
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}
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