containerized-data-importer/cmd/cdi-uploadserver/uploadserver.go
2018-09-19 12:30:45 -04:00

115 lines
2.5 KiB
Go

/*
* This file is part of the CDI project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2018 Red Hat, Inc.
*
*/
package main
import (
"flag"
"os"
"strconv"
"github.com/golang/glog"
"kubevirt.io/containerized-data-importer/pkg/common"
"kubevirt.io/containerized-data-importer/pkg/uploadserver"
)
const (
defaultListenPort = uint16(8443)
defaultListenAddress = "0.0.0.0"
defaultPVCDir = common.IMPORTER_WRITE_DIR
defaultDestination = common.IMPORTER_WRITE_PATH
)
func init() {
flag.Parse()
}
func main() {
defer glog.Flush()
listenAddress, listenPort := getListenAddressAndPort()
pvcDir, destination := getPVCDirAndDestination()
keyFile, certFile := getTLSKeyAndCert()
server := uploadserver.NewUploadServer(
listenAddress,
listenPort,
pvcDir,
destination,
keyFile,
certFile,
)
glog.Infof("PVC dir: %s, destination: %s", pvcDir, destination)
glog.Infof("Running server on %s:%d", listenAddress, listenPort)
err := server.Run()
if err != nil {
glog.Error("UploadServer failed: %s", err)
os.Exit(1)
}
glog.Info("UploadServer successfully exited")
}
func getListenAddressAndPort() (string, uint16) {
addr, port := defaultListenAddress, defaultListenPort
// empty value okay here
if val, exists := os.LookupEnv("LISTEN_ADDRESS"); exists {
addr = val
}
// not okay here
if val := os.Getenv("LISTEN_PORT"); len(val) > 0 {
n, err := strconv.ParseUint(val, 10, 16)
if err == nil {
port = uint16(n)
}
}
return addr, port
}
func getPVCDirAndDestination() (string, string) {
pvcDir, destination := defaultPVCDir, defaultDestination
if val := os.Getenv("PVC_DIR"); len(val) > 0 {
pvcDir = val
}
if val := os.Getenv("DESTINATION"); len(val) > 0 {
destination = val
}
return pvcDir, destination
}
func getTLSKeyAndCert() (string, string) {
key, cert := os.Getenv("TLS_KEY_FILE"), os.Getenv("TLS_CERT_FILE")
if key == "" || cert == "" {
glog.Fatal("Missing TLS config key: %q, cert %q", key, cert)
}
return key, cert
}