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main.go
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main.go
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package main
import (
"math/rand"
"os"
"path"
"time"
"github.com/concepts-system/go-paperless/common"
"github.com/concepts-system/go-paperless/domain"
"github.com/concepts-system/go-paperless/infrastructure"
"github.com/concepts-system/go-paperless/application"
"github.com/concepts-system/go-paperless/config"
"github.com/concepts-system/go-paperless/web"
)
var (
version string
buildDate string
release string
)
const (
documentsDirectory = "documents"
)
var log = common.NewLogger("main")
type bootstrapper struct {
config *config.Configuration
database *infrastructure.Database
server *web.Server
tubeMail domain.TubeMail
users domain.Users
documents domain.Documents
documentArchive domain.DocumentArchive
documentPreprocessor domain.DocumentPreprocessor
documentAnalyzer domain.DocumentAnalyzer
documentIndex domain.DocumentIndex
documentRegistry domain.DocumentRegistry
authService application.AuthService
userService application.UserService
documentService application.DocumentService
tokenKeyResolver application.TokenKeyResolver
}
func main() {
start := time.Now()
bs := &bootstrapper{}
loadConfiguration(bs)
if version == "" {
version = "DEV-SNAPSHOT"
}
if buildDate == "" {
buildDate = time.Now().Format("2006-01-02")
}
rand.Seed(time.Now().UnixNano())
log.Infof("Starting application %s (%s)", version, buildDate)
prepareDatabase(bs)
db, err := bs.database.DB.DB()
if err != nil {
log.Fatalf("Failed to connect to database: %v", err)
}
defer db.Close()
setupDependencies(bs)
initializeServer(bs)
ensureUserExists(bs)
log.Infof("Bootstrap completed in %v", time.Since(start))
if err := bs.server.Start(); err != nil {
log.Fatalf("Failed to start server: %v", err)
}
}
func loadConfiguration(bs *bootstrapper) {
bs.config = config.Load(release == "true")
config.ConfigureLogging(bs.config)
log.Info("Configuration loaded")
createDirectories(bs)
}
func prepareDatabase(bs *bootstrapper) {
bs.database = infrastructure.NewDatabase(bs.config)
if err := bs.database.Connect(); err != nil {
log.Fatalf("Failed to connect to database: %v", err)
}
if bs.config.Database.MigrateDatabase {
log.Info("Running migrations...")
// Migrate to most recent version by default.
// Use 'bs.database.MigrateTo(version)' to migrate to a specific version.
if err := bs.database.Migrate(); err != nil {
log.Fatalf("Failed to migrate database: %v", err)
}
}
}
func createDirectories(bs *bootstrapper) {
log.Info("Setting up directories...")
config := bs.config
// Create data directory
if _, err := os.Stat(config.Storage.DataPath); os.IsNotExist(err) {
err := os.MkdirAll(config.Storage.DataPath, os.ModePerm)
if err != nil {
log.Errorf("Failed to setup data directory: %v", err)
}
}
}
func setupDependencies(bs *bootstrapper) {
bs.tokenKeyResolver = application.ConfigTokenKeyResolver(bs.config)
bs.tubeMail = infrastructure.NewLocalAsyncTubeMailImpl()
bs.users = infrastructure.NewUsers(bs.database)
bs.documents = infrastructure.NewDocuments(bs.database)
initializeDocumentArchive(bs)
bs.documentPreprocessor = infrastructure.NewDocumentPreprocessorImpl(bs.documents, bs.documentArchive)
bs.documentAnalyzer = infrastructure.NewTesseractOcrEngine(bs.documents, bs.documentArchive)
initializeDocumentIndex(bs)
bs.documentRegistry = domain.NewDocumentRegistry(
bs.tubeMail,
bs.documents,
bs.documentPreprocessor,
bs.documentAnalyzer,
bs.documentIndex,
)
bs.userService = application.NewUserService(bs.users)
bs.authService = application.NewAuthService(
bs.config,
bs.users,
bs.tokenKeyResolver,
)
bs.documentService = application.NewDocumentService(
bs.users,
bs.documents,
bs.documentArchive,
bs.documentIndex,
bs.documentRegistry,
)
}
func initializeServer(bs *bootstrapper) {
bs.server = web.NewServer(bs.config, bs.authService)
registerRouters(bs)
}
func registerRouters(bs *bootstrapper) {
bs.server.Register(
// Auth routes
web.NewAuthRouter(
bs.authService,
application.ConfigTokenKeyResolver(bs.config),
),
// User routes
web.NewUserRouter(bs.userService),
// Document routes
web.NewDocumentRouter(bs.documentService),
)
}
func initializeDocumentArchive(bs *bootstrapper) {
documentArchive, err := infrastructure.NewDocumentArchiveFileSystemImpl(
path.Join(bs.config.Storage.DataPath, documentsDirectory),
)
if err != nil {
log.Fatalf("Failed to initialize document archive: %v", err)
}
bs.documentArchive = documentArchive
}
func initializeDocumentIndex(bs *bootstrapper) {
documentIndex, err := infrastructure.NewBleveDocumentIndex(bs.config.Index.DocumentsPath, bs.documents)
if err != nil {
log.Fatalf("Failed to initialize document index: %v", err)
}
bs.documentIndex = documentIndex
}
func ensureUserExists(bs *bootstrapper) {
_, count, err := bs.userService.GetUsers(domain.PageRequest{Offset: 0, Size: 1})
if err != nil {
log.Fatalf("Failed checking for default user: %v", err)
panic(err)
}
if count > 0 {
return
}
log.Info("No user present; creating default one...")
defaultUser := domain.NewUser(domain.User{
Username: "admin",
Forename: "Default",
Surname: "User",
IsAdmin: true,
IsActive: true,
})
_, err = bs.userService.CreateNewUser(defaultUser, "admin")
if err != nil {
log.Fatal("Failed to create default user", err)
}
}