파일에 직접 로깅하는 로거로 교체

client/client.go

@@ -20,7 +20,6 @@ import (
 	"time"
 	"unsafe"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
 	"repositories.action2quare.com/ayo/houston/shared"
 	"repositories.action2quare.com/ayo/houston/shared/protos"
 
@@ -197,7 +196,7 @@ func NewClient() (HoustonClient, error) {
 
 	var client *grpc.ClientConn
 	for {
-		logger.Println("grpc.DialContext :", clientConfig.GrpcAddress)
+		shared.Logger().Println("grpc.DialContext :", clientConfig.GrpcAddress)
 		dialContext, cancelDial := context.WithTimeout(context.Background(), 15*time.Second)
 		client, err = grpc.DialContext(dialContext, clientConfig.GrpcAddress, grpc.WithBlock(), grpc.WithTransportCredentials(insecure.NewCredentials()))
 		if err == nil {
@@ -206,11 +205,11 @@ func NewClient() (HoustonClient, error) {
 		}
 
 		cancelDial()
-		logger.Println("grpc.DialContext failed :", err)
+		shared.Logger().Println("grpc.DialContext failed :", err)
 		time.Sleep(5 * time.Second)
 	}
 
-	logger.Println("grpc.DialContext succeeded")
+	shared.Logger().Println("grpc.DialContext succeeded")
 	exefile, err := os.Executable()
 	if err != nil {
 		return nil, err
@@ -284,7 +283,7 @@ func NewClient() (HoustonClient, error) {
 					var dr shared.DeployRequest
 					unmarshal(&dr, resp.Args)
 
-					logger.Println(dr.Name, myname)
+					shared.Logger().Println(dr.Name, myname)
 					if dr.Name == myname {
 						if srcdir, replacer, err := hc.prepareUpdateSelf(&dr); err == nil {
 							args := []string{
@@ -293,14 +292,15 @@ func NewClient() (HoustonClient, error) {
 								filepath.ToSlash(os.Args[0]),
 							}
 							args = append(args, os.Args[1:]...)
+							shared.Logger().Println(replacer, args)
 							cmd := exec.Command(replacer, args...)
 							if err := cmd.Start(); err != nil {
-								logger.Println(err)
+								shared.Logger().Println(err)
 							} else {
 								hc.shutdownFunc()
 							}
 						} else {
-							logger.Println(err)
+							shared.Logger().Println(err)
 						}
 					} else {
 						if err := hc.deploy(&dr); err == nil {
@@ -308,7 +308,7 @@ func NewClient() (HoustonClient, error) {
 							hc.deploys[dr.Name] = prog
 							op.Refresh(ctx, hc.makeOperationQueryRequest())
 						} else {
-							logger.Println(err)
+							shared.Logger().Println(err)
 						}
 					}
 
@@ -325,35 +325,35 @@ func NewClient() (HoustonClient, error) {
 						}
 						op.Refresh(ctx, hc.makeOperationQueryRequest())
 					} else {
-						logger.Println(err)
+						shared.Logger().Println(err)
 					}
 
 				case shared.Start:
 					var sr shared.StartProcessRequest
 					unmarshal(&sr, resp.Args)
 					if err := hc.startChildProcess(&sr); err != nil {
-						logger.Println(err)
+						shared.Logger().Println(err)
 					}
 
 				case shared.Stop:
 					var sr shared.StopProcessRequest
 					unmarshal(&sr, resp.Args)
 					if err := hc.stopChildProcess(&sr); err != nil {
-						logger.Println(err)
+						shared.Logger().Println(err)
 					}
 
 				case shared.Restart:
 					var rr shared.RestartProcessRequest
 					unmarshal(&rr, resp.Args)
 					if err := hc.restartChildProcess(&rr); err != nil {
-						logger.Println(err)
+						shared.Logger().Println(err)
 					}
 
 				case shared.Upload:
 					var ur shared.UploadRequest
 					unmarshal(&ur, resp.Args)
 					if err := hc.uploadFiles(&ur); err != nil {
-						logger.Println(err)
+						shared.Logger().Println(err)
 					}
 				}
 			}
@@ -390,7 +390,7 @@ func (hc *houstonClient) Start() {
 
 	go func() {
 		c := <-interrupt
-		logger.Println("interrupt!!!!!!!! :", c.String())
+		shared.Logger().Println("interrupt!!!!!!!! :", c.String())
 		hc.shutdownFunc()
 	}()
 
@@ -402,7 +402,7 @@ func (hc *houstonClient) Start() {
 		default:
 			err := hc.checkOperation()
 			if err != nil {
-				logger.Println("hc.checkUpdate failed :", err)
+				shared.Logger().Println("hc.checkUpdate failed :", err)
 			}
 		}
 	}
@@ -416,7 +416,7 @@ func (hc *houstonClient) checkOperation() error {
 	defer func() {
 		r := recover()
 		if r != nil {
-			logger.Error(r)
+			shared.Logger().Println(r)
 		}
 	}()
 
@@ -438,7 +438,7 @@ func (hc *houstonClient) checkOperation() error {
 			cl.CloseSend()
 			return err
 		}
-		logger.Println(update)
+		shared.Logger().Println(update)
 		hc.operationChan <- update
 	}
 }

client/deploy.go

@@ -13,8 +13,6 @@ import (
 	"path/filepath"
 	"strings"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
-
 	"repositories.action2quare.com/ayo/houston/shared"
 
 	"golang.org/x/text/encoding/korean"
@@ -258,20 +256,24 @@ func (hc *houstonClient) prepareUpdateSelf(req *shared.DeployRequest) (srcdir st
 
 	selfname, _ := os.Executable()
 	srcreplacer := path.Join(path.Dir(fname), "replacer") + path.Ext(selfname)
-	replacer = "replacer" + path.Ext(selfname)
+	replacer = "./" + filepath.ToSlash("replacer"+path.Ext(selfname))
+	err = copy(srcreplacer, replacer)
+	if err == nil {
+		err = os.Chmod(replacer, 0775)
+	}
 
 	// replacer먼저 가져옴
-	return filepath.ToSlash(tempdir), filepath.ToSlash(replacer), copy(srcreplacer, replacer)
+	return filepath.ToSlash(tempdir), replacer, err
 }
 
 func (hc *houstonClient) deploy(req *shared.DeployRequest) error {
-	logger.Println("start deploying")
+	shared.Logger().Println("start deploying")
 	root, err := hc.prepareDeploy(req.Name, req.Version)
 	if err != nil {
 		return err
 	}
 
-	logger.Println("start downloading", req.Url)
+	shared.Logger().Println("start downloading", req.Url)
 	// verpath에 배포 시작
 	fname, err := download(root, hc.makeDownloadUrl(req.Url), req.AccessToken)
 	if err != nil {

client/operation.go

@@ -18,8 +18,6 @@ import (
 	"syscall"
 	"time"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
-
 	"repositories.action2quare.com/ayo/houston/shared"
 	"repositories.action2quare.com/ayo/houston/shared/protos"
 )
@@ -56,7 +54,7 @@ func (hc *houstonClient) uploadZipLogFile(zipFile string, name string, version s
 
 	req, err := http.NewRequest("POST", hc.httpAddr+"/upload", zf)
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 	}
 	req.Header.Set("Houston-Service-Name", name)
 	req.Header.Set("Houston-Service-Version", version)
@@ -121,19 +119,19 @@ func zipLogFiles(req *shared.UploadRequest, start, except string) (string, []str
 		relative := file[len(root)+1:]
 		fw, err := w.Create(relative)
 		if err != nil {
-			logger.Error(err)
+			shared.Logger().Println(err)
 			return "", nil, err
 		}
 
 		src, err := os.Open(file)
 		if err != nil {
-			logger.Error(err)
+			shared.Logger().Println(err)
 			return "", nil, err
 		}
 		defer src.Close()
 
 		if _, err = io.Copy(fw, src); err != nil {
-			logger.Error(err)
+			shared.Logger().Println(err)
 			return "", nil, err
 		}
 	}
@@ -220,7 +218,7 @@ func (hc *houstonClient) launch(meta *procmeta) error {
 		defer func() {
 			r := recover()
 			if r != nil {
-				logger.Println(r)
+				shared.Logger().Println(r)
 				debug.PrintStack()
 			}
 			close(relayChan)
@@ -266,10 +264,10 @@ func (hc *houstonClient) launch(meta *procmeta) error {
 								os.Remove(oldf)
 							}
 						} else {
-							logger.Println("uploadZipLogFile failed :", err)
+							shared.Logger().Println("uploadZipLogFile failed :", err)
 						}
 					} else if err != nil {
-						logger.Println("zipLogFiles failed :", err)
+						shared.Logger().Println("zipLogFiles failed :", err)
 					}
 				}(startFile, nextFile)
 
@@ -325,7 +323,7 @@ func (hc *houstonClient) launch(meta *procmeta) error {
 var errPrepareprocessLaunchFailed = errors.New("prepareProcessLaunch failed")
 
 func (hc *houstonClient) startChildProcess(req *shared.StartProcessRequest) error {
-	logger.Println("startChildProcess :", *req)
+	shared.Logger().Println("startChildProcess :", *req)
 	if req.Version == "latest" {
 		// 최신 버전을 찾음
 		latest, err := shared.FindLastestVersion(req.Name)
@@ -503,10 +501,10 @@ func (hc *houstonClient) uploadFiles(req *shared.UploadRequest) error {
 		req.Version = latest
 	}
 
-	logger.Println("uploadFiles req :", *req)
+	shared.Logger().Println("uploadFiles req :", *req)
 	for _, child := range hc.childProcs {
 		if child.version == req.Version && child.name == req.Name {
-			logger.Println("uploadFiles found :", child.version, child.name)
+			shared.Logger().Println("uploadFiles found :", child.version, child.name)
 			child.logUploadChan <- req
 			return nil
 		}
@@ -521,10 +519,10 @@ func (hc *houstonClient) uploadFiles(req *shared.UploadRequest) error {
 				os.Remove(oldf)
 			}
 		} else {
-			logger.Println("uploadZipLogFile failed :", err)
+			shared.Logger().Println("uploadZipLogFile failed :", err)
 		}
 	} else if err != nil {
-		logger.Println("zipLogFiles failed :", err)
+		shared.Logger().Println("zipLogFiles failed :", err)
 	}
 
 	return nil

go.mod

@@ -6,7 +6,6 @@ require (
 	golang.org/x/text v0.9.0
 	google.golang.org/grpc v1.55.0
 	google.golang.org/protobuf v1.30.0
-	repositories.action2quare.com/ayo/gocommon v0.0.0-20230528100715-93bd4f6c0bab
 )
 
 require (

go.sum

@@ -18,5 +18,3 @@ google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp0
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
 google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-repositories.action2quare.com/ayo/gocommon v0.0.0-20230528100715-93bd4f6c0bab h1:EMlxwDayv3rn8ttJcJuDLYoHA5odVn85+LjdAuw+2dw=
-repositories.action2quare.com/ayo/gocommon v0.0.0-20230528100715-93bd4f6c0bab/go.mod h1:ng62uGMGXyQSeuxePG5gJAMtip4Rnspu5Tu7hgvaXns=

main.go

@@ -3,28 +3,30 @@ package main
 import (
 	"flag"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
 	"repositories.action2quare.com/ayo/houston/client"
 	"repositories.action2quare.com/ayo/houston/server"
+	"repositories.action2quare.com/ayo/houston/shared"
 )
 
 var runAsClient = flag.Bool("client", false, "")
 var runAsServer = flag.Bool("server", false, "")
 
 func main() {
+	shared.InitLogger()
+
 	if !flag.Parsed() {
 		flag.Parse()
 	}
 
 	if !*runAsClient && !*runAsServer {
-		logger.Fatal("client or server flag is needed")
+		shared.Logger().Fatal("client or server flag is needed")
 		return
 	}
 
 	if *runAsClient {
 		hc, err := client.NewClient()
 		if err != nil {
-			logger.Fatal(err)
+			shared.Logger().Fatal(err)
 			return
 		}
 		hc.Start()

replacer/main.go

@@ -2,8 +2,8 @@ package main
 
 import (
 	"errors"
-	"fmt"
 	"io"
+	"log"
 	"os"
 	"os/exec"
 	"path"
@@ -48,23 +48,28 @@ func copy(src, dst string) error {
 }
 
 func main() {
+	logfile, _ := os.OpenFile("replacer.log", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
+	defer logfile.Close()
+	stdlog := log.New(logfile, "", log.LstdFlags)
+
 	args := os.Args
 	// args[1] : 나를 시작한 pid. pid가 종료될 때 까지 기다림
 	// args[2] : target 폴더
 	// args[3:] : 다시 시작할 때 넘겨줄 arguments(프로세스 이름 포함)
-	fmt.Println(args)
+	stdlog.Println(args)
 
 	pid, err := strconv.Atoi(args[1])
 	if err != nil {
-		panic(err)
+		stdlog.Fatal(err)
 	}
 	proc, err := os.FindProcess(pid)
 	if err != nil {
-		panic(err)
+		stdlog.Fatal(err)
 	}
 	proc.Wait()
 
 	selfext, _ := os.Executable()
+	selfext = path.Base(selfext)
 
 	entries, _ := os.ReadDir(args[2])
 	for _, ent := range entries {
@@ -74,16 +79,27 @@ func main() {
 
 		if ent.IsDir() {
 			if err := os.MkdirAll(ent.Name(), 0775); err != nil {
-				panic(err)
+				stdlog.Fatal(err)
 			}
 		} else {
 			if err := copy(path.Join(args[2], ent.Name()), ent.Name()); err != nil {
-				panic(err)
+				stdlog.Println("copy failed :", path.Join(args[2], ent.Name()), ent.Name())
+				stdlog.Fatal(err)
 			}
 		}
 	}
 
-	os.RemoveAll(args[2])
+	err = os.RemoveAll(args[2])
+	if err != nil {
+		stdlog.Println("os.RemoveAll failed :", args[2], err)
+	}
+
+	err = os.Chmod(args[3], 0775)
+	if err != nil {
+		stdlog.Println("os.Chmod failed :", err)
+	}
+
+	stdlog.Println("exec.Command :", args)
 	cmd := exec.Command(args[3], args[4:]...)
 	cmd.Start()
 }

server/http_api.go

@@ -9,7 +9,6 @@ import (
 	"strconv"
 	"time"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
 	"repositories.action2quare.com/ayo/houston/shared"
 )
 
@@ -26,7 +25,7 @@ func (h *houstonHandler) GetAgents(w http.ResponseWriter, r *http.Request) {
 func (h *houstonHandler) GetDeploySources(w http.ResponseWriter, r *http.Request) {
 	files, err := os.ReadDir(h.deployPath)
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		w.WriteHeader(http.StatusInternalServerError)
 		return
 	}
@@ -62,7 +61,7 @@ func (h *houstonHandler) UploadDeploySource(w http.ResponseWriter, r *http.Reque
 	//   </form>
 	file, header, err := r.FormFile("file")
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		w.WriteHeader(http.StatusBadRequest)
 		return
 	}
@@ -70,7 +69,7 @@ func (h *houstonHandler) UploadDeploySource(w http.ResponseWriter, r *http.Reque
 
 	contents, err := io.ReadAll(file)
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		w.WriteHeader(http.StatusInternalServerError)
 		return
 	}
@@ -89,7 +88,7 @@ func (h *houstonHandler) UploadDeploySource(w http.ResponseWriter, r *http.Reque
 	}
 
 	if err = os.MkdirAll(path.Dir(filename), 0775); err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		w.WriteHeader(http.StatusInternalServerError)
 		return
 	}
@@ -97,7 +96,7 @@ func (h *houstonHandler) UploadDeploySource(w http.ResponseWriter, r *http.Reque
 	// 파일 저장
 	err = os.WriteFile(filename, contents, 0644)
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		w.WriteHeader(http.StatusInternalServerError)
 		return
 	}
@@ -119,7 +118,7 @@ func (h *houstonHandler) DeleteDeploySource(w http.ResponseWriter, r *http.Reque
 	// deploys 폴더는 파일시스템 서비스이므로 다운로드 가능
 	targetpath := path.Join(h.deployPath, name, version)
 	if err := os.RemoveAll(targetpath); err != nil {
-		logger.Println("deleteDeploySource failed :", err)
+		shared.Logger().Println("deleteDeploySource failed :", err)
 		w.WriteHeader(http.StatusInternalServerError)
 		return
 	}
@@ -139,7 +138,7 @@ func (h *houstonHandler) Deploy(w http.ResponseWriter, r *http.Request) {
 	var targets []string
 	if len(traws) > 0 {
 		if err := json.Unmarshal([]byte(traws), &targets); err != nil {
-			logger.Error(err)
+			shared.Logger().Println(err)
 			w.WriteHeader(http.StatusBadRequest)
 			return
 		}
@@ -153,7 +152,7 @@ func (h *houstonHandler) Deploy(w http.ResponseWriter, r *http.Request) {
 	relPath := path.Join(h.deployPath, name, version)
 	files, err := os.ReadDir(relPath)
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		w.WriteHeader(http.StatusBadRequest)
 		return
 	}
@@ -200,7 +199,7 @@ func (h *houstonHandler) Undeploy(w http.ResponseWriter, r *http.Request) {
 	var targets []string
 	if len(traws) > 0 {
 		if err := json.Unmarshal([]byte(traws), &targets); err != nil {
-			logger.Error(err)
+			shared.Logger().Println(err)
 			w.WriteHeader(http.StatusBadRequest)
 			return
 		}
@@ -236,7 +235,7 @@ func (h *houstonHandler) StartProcess(w http.ResponseWriter, r *http.Request) {
 	var targets []string
 	if len(traws) > 0 {
 		if err := json.Unmarshal([]byte(traws), &targets); err != nil {
-			logger.Error(err)
+			shared.Logger().Println(err)
 			w.WriteHeader(http.StatusBadRequest)
 			return
 		}
@@ -275,7 +274,7 @@ func (h *houstonHandler) StopProcess(w http.ResponseWriter, r *http.Request) {
 	var targets []string
 	if len(traws) > 0 {
 		if err := json.Unmarshal([]byte(traws), &targets); err != nil {
-			logger.Error(err)
+			shared.Logger().Println(err)
 			w.WriteHeader(http.StatusBadRequest)
 			return
 		}
@@ -312,7 +311,7 @@ func (h *houstonHandler) UploadLogs(w http.ResponseWriter, r *http.Request) {
 	}
 	var targets []string
 	if err := json.Unmarshal([]byte(traws), &targets); err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		w.WriteHeader(http.StatusBadRequest)
 		return
 	}

server/http_handler.go

@@ -10,7 +10,7 @@ import (
 	"runtime/debug"
 	"strings"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
+	"repositories.action2quare.com/ayo/houston/shared"
 )
 
 const (
@@ -57,7 +57,7 @@ func (h *houstonHandler) RegisterHandlers(serveMux *http.ServeMux, prefix string
 		return err
 	}
 
-	logger.Printf("houstonHandler registed. deployPath : %s, downloadPath : %s", h.deployPath, h.downloadPath)
+	shared.Logger().Printf("houstonHandler registed. deployPath : %s, downloadPath : %s", h.deployPath, h.downloadPath)
 
 	if len(prefix) > 0 {
 		prefix = "/" + prefix
@@ -74,7 +74,7 @@ func (h *houstonHandler) RegisterHandlers(serveMux *http.ServeMux, prefix string
 		defer func() {
 			s := recover()
 			if s != nil {
-				logger.Println(s)
+				shared.Logger().Println(s)
 				debug.PrintStack()
 			}
 			io.Copy(io.Discard, r.Body)
@@ -107,7 +107,7 @@ func (h *houstonHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	defer func() {
 		s := recover()
 		if s != nil {
-			logger.Println(s)
+			shared.Logger().Println(s)
 			debug.PrintStack()
 		}
 	}()
@@ -132,7 +132,7 @@ func (h *houstonHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	method, ok := h.methods[strings.ToLower(operation)]
 	if !ok {
 		// 없는 operation
-		logger.Println("fail to call api. operation is not valid :", operation)
+		shared.Logger().Println("fail to call api. operation is not valid :", operation)
 		w.WriteHeader(http.StatusBadRequest)
 		return
 	}

server/operation.go

@@ -7,8 +7,6 @@ import (
 	"reflect"
 	"sync"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
-
 	"repositories.action2quare.com/ayo/houston/shared"
 	"repositories.action2quare.com/ayo/houston/shared/protos"
 )
@@ -75,7 +73,7 @@ func (sp *hostPool) regist(desc *protos.OperationQueryRequest) (string, chan *op
 	sp.hosts[desc.Hostname] = host
 
 	test, _ := json.Marshal(sp.hosts)
-	logger.Println(string(test))
+	shared.Logger().Println(string(test))
 	return desc.Hostname, host.opChan
 }
 
@@ -90,7 +88,7 @@ func (sp *hostPool) refresh(desc *protos.OperationQueryRequest) {
 	}
 
 	test, _ := json.Marshal(sp.hosts)
-	logger.Println(string(test))
+	shared.Logger().Println(string(test))
 }
 
 func (sp *hostPool) unregist(key string) {

server/server.go

@@ -6,7 +6,6 @@ import (
 	"net"
 	"os"
 
-	"repositories.action2quare.com/ayo/gocommon/logger"
 	"repositories.action2quare.com/ayo/houston/shared"
 	"repositories.action2quare.com/ayo/houston/shared/protos"
 
@@ -110,7 +109,7 @@ type Operation interface {
 func loadServerConfig() serverConfig {
 	configFile, err := os.Open("config.json")
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		return serverConfig{
 			GrpcPort: 8080,
 		}
@@ -126,14 +125,14 @@ func loadServerConfig() serverConfig {
 	dec := json.NewDecoder(configFile)
 	err = dec.Decode(&config)
 	if err != nil {
-		logger.Error(err)
+		shared.Logger().Println(err)
 		return serverConfig{
 			GrpcPort: 8080,
 		}
 	}
 
 	if config.Houston == nil {
-		logger.Error(`"houston" object is missing in config.json`)
+		shared.Logger().Println(`"houston" object is missing in config.json`)
 		return serverConfig{
 			GrpcPort: 8080,
 		}
@@ -167,7 +166,7 @@ type houstonServer struct {
 }
 
 func (hs *houstonServer) Start() error {
-	logger.Println("houston server is started at port", hs.port)
+	shared.Logger().Println("houston server is started at port", hs.port)
 	lis, err := net.Listen("tcp", fmt.Sprintf("0.0.0.0:%d", hs.port))
 	if err != nil {
 		return err

shared/logger.go

@@ -0,0 +1,28 @@
+package shared
+
+import (
+	"log"
+	"os"
+	"path"
+)
+
+var defLogger *log.Logger
+
+func InitLogger() {
+	name, _ := os.Executable()
+	base := path.Base(name)
+
+	logfile, _ := os.OpenFile(base+".log", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
+	defLogger = log.New(logfile, "", log.LstdFlags)
+}
+
+func Logger() *log.Logger {
+	return defLogger
+}
+
+func CloseLogger() {
+	outfile := defLogger.Writer().(*os.File)
+	if outfile != nil {
+		outfile.Close()
+	}
+}