s3manager-web/main.go
2023-06-13 18:34:15 +02:00

133 lines
3.7 KiB
Go

package main
import (
"crypto/tls"
"embed"
"fmt"
"io/fs"
"log"
"net/http"
"os"
"time"
"github.com/cloudlena/adapters/logging"
"github.com/cloudlena/s3manager/internal/app/s3manager"
"github.com/gorilla/mux"
"github.com/minio/minio-go/v7"
"github.com/minio/minio-go/v7/pkg/credentials"
"github.com/spf13/viper"
)
const serverTimeout = 5 * time.Second
//go:embed web/template
var templateFS embed.FS
//go:embed web/static
var staticFS embed.FS
func main() {
var accessKeyID, secretAccessKey, iamEndpoint string
viper.AutomaticEnv()
viper.SetDefault("ENDPOINT", "s3.amazonaws.com")
endpoint := viper.GetString("ENDPOINT")
useIam := viper.GetBool("USE_IAM")
if useIam {
iamEndpoint = viper.GetString("IAM_ENDPOINT")
} else {
accessKeyID = viper.GetString("ACCESS_KEY_ID")
if len(accessKeyID) == 0 {
log.Fatal("please provide ACCESS_KEY_ID")
}
secretAccessKey = viper.GetString("SECRET_ACCESS_KEY")
if len(secretAccessKey) == 0 {
log.Fatal("please provide SECRET_ACCESS_KEY")
}
}
region := viper.GetString("REGION")
viper.SetDefault("ALLOW_DELETE", true)
allowDelete := viper.GetBool("ALLOW_DELETE")
viper.SetDefault("FORCE_DOWNLOAD", true)
forceDownload := viper.GetBool("FORCE_DOWNLOAD")
viper.SetDefault("USE_SSL", true)
useSSL := viper.GetBool("USE_SSL")
viper.SetDefault("SKIP_SSL_VERIFICATION", false)
skipSSLVerification := viper.GetBool("SKIP_SSL_VERIFICATION")
listRecursive := viper.GetBool("LIST_RECURSIVE")
viper.SetDefault("PORT", "8080")
port := viper.GetString("PORT")
viper.SetDefault("SSE_TYPE", "")
viper.SetDefault("SSE_KEY", "")
sseType := s3manager.SSEType{Type: viper.GetString("SSE_TYPE"), Key: viper.GetString("SSE_KEY")}
// Set up templates
templates, err := fs.Sub(templateFS, "web/template")
if err != nil {
log.Fatal(err)
}
// Set up statics
statics, err := fs.Sub(staticFS, "web/static")
if err != nil {
log.Fatal(err)
}
// Set up S3 client
opts := &minio.Options{
Secure: useSSL,
}
if useIam {
opts.Creds = credentials.NewIAM(iamEndpoint)
} else {
opts.Creds = credentials.NewStaticV4(accessKeyID, secretAccessKey, "")
}
if region != "" {
opts.Region = region
}
if useSSL && skipSSLVerification {
opts.Transport = &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: true}} //nolint:gosec
}
s3, err := minio.New(endpoint, opts)
if err != nil {
log.Fatalln(fmt.Errorf("error creating s3 client: %w", err))
}
// Set up router
r := mux.NewRouter()
r.Handle("/", http.RedirectHandler("/buckets", http.StatusPermanentRedirect)).Methods(http.MethodGet)
r.PathPrefix("/static/").Handler(http.StripPrefix("/static/", http.FileServer(http.FS(statics)))).Methods(http.MethodGet)
r.Handle("/buckets", s3manager.HandleBucketsView(s3, templates, allowDelete)).Methods(http.MethodGet)
r.PathPrefix("/buckets/").Handler(s3manager.HandleBucketView(s3, templates, allowDelete, listRecursive)).Methods(http.MethodGet)
r.Handle("/api/buckets", s3manager.HandleCreateBucket(s3)).Methods(http.MethodPost)
if allowDelete {
r.Handle("/api/buckets/{bucketName}", s3manager.HandleDeleteBucket(s3)).Methods(http.MethodDelete)
}
r.Handle("/api/buckets/{bucketName}/objects", s3manager.HandleCreateObject(s3, sseType)).Methods(http.MethodPost)
r.Handle("/api/buckets/{bucketName}/objects/{objectName:.*}", s3manager.HandleGetObject(s3, forceDownload)).Methods(http.MethodGet)
if allowDelete {
r.Handle("/api/buckets/{bucketName}/objects/{objectName:.*}", s3manager.HandleDeleteObject(s3)).Methods(http.MethodDelete)
}
lr := logging.Handler(os.Stdout)(r)
srv := &http.Server{
Addr: ":" + port,
Handler: lr,
ReadTimeout: serverTimeout,
WriteTimeout: serverTimeout,
}
log.Fatal(srv.ListenAndServe())
}