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sablier.go
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sablier.go
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package app
import (
"context"
"github.com/acouvreur/sablier/app/http"
"github.com/acouvreur/sablier/app/instance"
"github.com/acouvreur/sablier/app/providers"
"github.com/acouvreur/sablier/app/sessions"
"github.com/acouvreur/sablier/app/storage"
"github.com/acouvreur/sablier/config"
"github.com/acouvreur/sablier/pkg/tinykv"
"github.com/acouvreur/sablier/version"
log "github.com/sirupsen/logrus"
)
func Start(conf config.Config) error {
logLevel, err := log.ParseLevel(conf.Logging.Level)
if err != nil {
log.Warnf("unrecognized log level \"%s\" must be one of [panic, fatal, error, warn, info, debug, trace]", conf.Logging.Level)
logLevel = log.InfoLevel
}
log.SetLevel(logLevel)
log.Info(version.Info())
provider, err := providers.NewProvider(conf.Provider)
if err != nil {
return err
}
log.Infof("using provider \"%s\"", conf.Provider.Name)
store := tinykv.New(conf.Sessions.ExpirationInterval, onSessionExpires(provider))
storage, err := storage.NewFileStorage(conf.Storage)
if err != nil {
return err
}
sessionsManager := sessions.NewSessionsManager(store, provider)
defer sessionsManager.Stop()
if storage.Enabled() {
defer saveSessions(storage, sessionsManager)
loadSessions(storage, sessionsManager)
}
http.Start(conf.Server, conf.Strategy, conf.Sessions, sessionsManager)
return nil
}
func onSessionExpires(provider providers.Provider) func(key string, instance instance.State) {
return func(_key string, _instance instance.State) {
go func(key string, instance instance.State) {
log.Debugf("stopping %s...", key)
_, err := provider.Stop(context.Background(), key)
if err != nil {
log.Warnf("error stopping %s: %s", key, err.Error())
} else {
log.Debugf("stopped %s", key)
}
}(_key, _instance)
}
}
func loadSessions(storage storage.Storage, sessions sessions.Manager) {
reader, err := storage.Reader()
if err != nil {
log.Error("error loading sessions", err)
}
err = sessions.LoadSessions(reader)
if err != nil {
log.Error("error loading sessions", err)
}
}
func saveSessions(storage storage.Storage, sessions sessions.Manager) {
writer, err := storage.Writer()
if err != nil {
log.Error("error saving sessions", err)
return
}
err = sessions.SaveSessions(writer)
if err != nil {
log.Error("error saving sessions", err)
}
}