/
main.go
152 lines (134 loc) · 3.74 KB
/
main.go
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package main
import (
"context"
"flag"
badger "github.com/dgraph-io/badger/v3"
"github.com/je4/s3image/v2/pkg/filesystem"
"github.com/je4/s3image/v2/pkg/server"
lm "github.com/je4/utils/v2/pkg/logger"
"io"
"log"
"os"
"os/signal"
"path/filepath"
"runtime"
"syscall"
"time"
)
func main() {
cfgFile := flag.String("cfg", "/etc/s3image.toml", "locations of config file")
flag.Parse()
config := LoadConfig(*cfgFile)
// create logger instance
logger, lf := lm.CreateLogger("S3Image", config.Logfile, nil, config.Loglevel, config.Logformat)
defer lf.Close()
var fs filesystem.FileSystem
var err error
switch config.Filesystem {
case "s3":
fs, err = filesystem.NewS3Fs(config.S3.Endpoint, config.S3.AccessKeyId, config.S3.SecretAccessKey, config.S3CacheExp.Duration, config.S3.UseSSL)
if err != nil {
logger.Fatalf("cannot connect to s3 instance: %v", err)
}
case "local":
fs, err = filesystem.NewLocalFs(config.Local.Path, logger)
if err != nil {
logger.Fatalf("cannot create local filesystem at %s: %v", config.Local.Path, err)
}
default:
logger.Fatalf("unknown filesystem %s", config.Filesystem)
}
var accessLog io.Writer
var f *os.File
if config.AccessLog == "" {
accessLog = os.Stdout
} else {
f, err = os.OpenFile(config.AccessLog, os.O_WRONLY|os.O_CREATE, 0755)
if err != nil {
logger.Panicf("cannot open file %s: %v", config.AccessLog, err)
return
}
defer f.Close()
accessLog = f
}
stat, err := os.Stat(config.CacheDir)
if err != nil {
logger.Panicf("cannot stat cache \"%s\"", config.CacheDir)
return
}
if !stat.IsDir() {
logger.Panicf("%s not a director", config.CacheDir)
return
}
if config.ClearCacheOnStartup {
logger.Infof("deleting cache files in %s", config.CacheDir)
if len(config.CacheDir) < 4 {
logger.Panicf("%s too short. will not clear cache", config.CacheDir)
return
}
d, err := os.Open(config.CacheDir)
if err != nil {
logger.Panicf("cannot open directory %s", config.CacheDir)
return
}
names, err := d.Readdirnames(-1)
if err != nil {
d.Close()
logger.Panicf("cannot read %s", config.CacheDir)
return
}
d.Close()
for _, name := range names {
fullpath := filepath.Join(config.CacheDir, name)
logger.Infof("delete %s", fullpath)
if err := os.Remove(fullpath); err != nil {
logger.Panicf("cannot delete %s", fullpath)
return
}
}
}
/*
if err := os.RemoveAll(config.CacheDir); err != nil {
log.Errorf("cannot remove %s: %v", config.CacheDir, err)
}
*/
bconfig := badger.DefaultOptions(config.CacheDir)
if runtime.GOOS == "windows" {
// bconfig.Truncate = true
}
bconfig.Logger = logger
db, err := badger.Open(bconfig)
if err != nil {
log.Panicf("cannot open badger database: %v", err)
return
}
defer db.Close()
srv, err := server.NewServer(config.ServiceName, config.Addr, config.AddrExt, config.UserName, config.Password, logger, accessLog, fs, db, config.Buckets, config.Templates)
if err != nil {
logger.Panicf("cannot start server: %v", err)
}
go func() {
logger.Infof("server starting at %s - %s", config.Addr, config.AddrExt)
if err := srv.ListenAndServe(config.CertPEM, config.KeyPEM); err != nil {
logger.Fatalf("server died: %v", err)
}
}()
end := make(chan bool, 1)
// process waiting for interrupt signal (TERM or KILL)
go func() {
sigint := make(chan os.Signal, 1)
// interrupt signal sent from terminal
signal.Notify(sigint, os.Interrupt)
signal.Notify(sigint, syscall.SIGTERM)
signal.Notify(sigint, syscall.SIGKILL)
<-sigint
// We received an interrupt signal, shut down.
logger.Infof("shutdown requested")
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
srv.Shutdown(ctx)
end <- true
}()
<-end
logger.Info("server stopped")
}