better logging management

compose.yml

@@ -1,7 +1,7 @@
 version: '3.3'
 services:
     mailautoconf:
-        container_name: mailautoconf
+        container_name: mailautoconf-pod
         ports:
             - '8010:8010'
         volumes:

src/default-config/config.default.yaml

@@ -1,5 +1,5 @@
 ---
-Version : "0.1.3"
+Version : "0.1.4"
 # Sample config.yaml file.
 # Copy this file to "config/config.yaml" and adjust the
 # settings to your requirements

src/global/global.go

@@ -1,10 +1,11 @@
 package global
 import (
-  . "mailautoconf/structs"
+  . "mailautoconf/global/structs"
+  "mailautoconf/global/logger"
   "fmt"
   "gopkg.in/yaml.v2"
   "io/ioutil"
-  "os"
+  // "os"
   "encoding/json"
   "text/template"
   "path"
@@ -39,16 +40,16 @@ func NewConfig() Config {
 }
 func loadConfig() Config {
   cfg := Config{}
-  fmt.Println("Loading Default Config…")
+  logger.Log("Loading Default Config…")
   cfgfile := defaultConfigDir + "config.default.yaml"
   unmarshalConfig(cfgfile, &cfg)
-  fmt.Println("Loading Custom Config…")
+  logger.Log("Loading Custom Config…")
   customcfgfile := configDir + "config.yaml"
   unmarshalConfig(customcfgfile, &cfg)
-  fmt.Println("Loading Default Services…")
+  logger.Log("Loading Default Services…")
   svcfile := defaultConfigDir + "services.default.yaml"
   unmarshalConfig(svcfile, &cfg)
-  fmt.Println("Loading Custom Services…")
+  logger.Log("Loading Custom Services…")
   customsvcfile := configDir + "services.yaml"
   unmarshalConfig(customsvcfile, &cfg)
   removeDisabledItems(&cfg)
@@ -64,21 +65,19 @@ func loadXMLTemplates(){
         "onoff": chooseOnOff,
       }
     t, err := template.New(name).Funcs(fmap).ParseFiles(tmpl)
-    if err != nil {
-      panic (err)
-    }
+    logger.CheckError(err)
     Templates[name] = t
   }
 }
 func unmarshalConfig(file string, cfg *Config)  {
-  if FileExists(file) {
+  if logger.FileExists(file) {
     content, err := ioutil.ReadFile(file)
-    if err != nil {
-      fmt.Println("Error reading config :", file, " : ", err)
+    if !logger.ErrorOK(err){
+      logger.Log("Error reading config :", file, " : ", fmt.Sprintf("%v",err))
     }
     err2 := yaml.Unmarshal(content, &cfg)
-    if err2 != nil {
-      fmt.Println("Error unmarshaling config :", file, " : ", err2)
+    if !logger.ErrorOK(err2){
+      logger.Log("Error unmarshaling config :", file, " : ", fmt.Sprintf("%v",err2))
     }
   }
 }
@@ -108,22 +107,11 @@ func removeDisabledItems(cfg *Config) {
   }
   cfg.OtherServices = new_svcs
 }
-func FileExists(file string) bool {
-  exists := false
-  if _, err := os.Stat(file); err == nil {
-    exists = true
-  } else {
-    fmt.Println(err)
-    fmt.Printf("File %s does not exist\n", file);
-  }
-  return exists
-}
+
 
 func JSONify(content interface{}) string {
   data, err := json.Marshal(content)
-  if err != nil {
-    fmt.Println(err)
-  }
+  logger.CheckError(err)
   return string(data)
 }
 func parseUsername(svc Service, email string) string {
@@ -160,6 +148,6 @@ func GetSessionIP() string {
 	if forwarded != "" {
 		ip = forwarded
 	}
-  fmt.Printf("Session %s Connect From : %s\r\f",ThisSession.ID, ip)
+  logger.Log("Session ", ThisSession.ID, " Connect From : ", ip)
 	return ip
 }

src/global/logger/logger.go

@@ -0,0 +1,73 @@
+package logger
+
+import (
+  "log"
+  "fmt"
+  "io/ioutil"
+  "os"
+  "time"
+)
+const logDir = "config/logs"
+func Log(str ...string) {
+  makeLogDir()
+
+  line := ""
+  for _, s := range str {
+    line = line + s
+  }
+  line = line + "\r\n"
+  log.Print(line)
+  t := time.Now()
+  logname := fmt.Sprintf("%s_log.log",t.Format("200601"))
+  logfile := fmt.Sprintf("%s/%s",logDir, logname)
+  line = fmt.Sprintf("%s %s",t.Format("2006/01/02 15:04:05"), line)
+  if !FileExists(logfile) {
+    err := ioutil.WriteFile(logfile, []byte(line), 0755)
+    CheckError(err)
+  } else {
+    file, err := os.OpenFile(logfile, os.O_APPEND|os.O_WRONLY, 0755)
+    CheckError(err)
+    defer file.Close()
+    if _, err := file.WriteString(line); err != nil {
+      CheckError(err)
+    }
+  }
+
+}
+func CheckError(err error) (ok bool) {
+  // here for obsolescence
+  return ErrorOK(err)
+}
+func ErrorOK(err error) (ok bool) {
+  ok = true // All is OK, err == nil
+  if err != nil {
+    ok = false // There's an error, print it
+    e := fmt.Sprintf("%v",err)
+    Log(e)
+  }
+  return
+}
+func Fatal(err error) {
+  e := fmt.Sprintf("%v",err)
+  Log(e)
+  log.Fatal(err)
+}
+func makeLogDir(){
+  _, err := os.Stat(logDir)
+  if os.IsNotExist(err) {
+    os.Mkdir(logDir, 0755)
+  }
+}
+func FileExists(file string) bool {
+  exists := false
+  _, err := os.Stat(file);
+  if os.IsNotExist(err) {
+    log.Print("File does not exist : ", file);
+  } else if err == nil {
+    exists = true
+  } else {
+    log.Fatal(err)
+    log.Print("File %s does not exist\n", file);
+  }
+  return exists
+}

src/mailautoconf.go

@@ -1,16 +1,17 @@
 package main
 
 import (
-	"fmt"
+	// "fmt"
   "net/http"
-  "log"
+  // "log"
 	"mailautoconf/web/handler"
 	"mailautoconf/global"
+	"mailautoconf/global/logger"
 )
 
 func main() {
 	global.NewConfig()
   http.HandleFunc("/", handler.WebHandler)
-	fmt.Println("Starting up Web Listener on port 8010")
-  log.Fatal(http.ListenAndServe(":8010", nil))
+	logger.Log("Starting up Web Listener on port 8010")
+  logger.Fatal(http.ListenAndServe(":8010", nil))
 }

src/web/handler/handler.go

@@ -1,21 +1,22 @@
 package handler
 import (
-  . "mailautoconf/structs"
+
   . "mailautoconf/global"
+  . "mailautoconf/global/structs"
+  "mailautoconf/global/logger"
   "mailautoconf/web/responses"
   "strings"
   "net/http"
   "fmt"
 )
 func WebHandler(w http.ResponseWriter, r *http.Request) {
-
-
   ThisSession = Session{}
   ThisSession.ResponseWriter = w
   ThisSession.Request = r
 
   ThisSession.ID = NewSessionID()
-  fmt.Printf("Session %s Request For : %s\r\f",ThisSession.ID, r.URL)
+  url := fmt.Sprintf("%s", r.URL)
+  logger.Log("Session ", ThisSession.ID, " Request For : ", url )
   ThisSession.IP = GetSessionIP()
 
   ThisSession.Path = strings.ToLower(r.URL.Path[1:])
@@ -35,11 +36,9 @@ func WebHandler(w http.ResponseWriter, r *http.Request) {
   default:
     ThisSession.WebContent = responses.DefaultResponse()
   }
-
-  writeWebOutput()
+  webOutput()
 }
-
-func writeWebOutput () {
+func webOutput(){
   ThisSession.ResponseWriter.Header().Set("Content-Type", ThisSession.ContentType)
   fmt.Fprintf(ThisSession.ResponseWriter, ThisSession.WebContent)
 }

src/web/responses/responses.go

@@ -1,7 +1,8 @@
 package responses
 import (
   "mailautoconf/global"
-  . "mailautoconf/structs"
+  "mailautoconf/global/logger"
+  . "mailautoconf/global/structs"
   // "text/template"
   "fmt"
   // "path"
@@ -16,9 +17,7 @@ func MozAutoconfig() string {
   // https://wiki.mozilla.org/Thunderbird:Autoconfiguration:ConfigFileFormat
 
   // parse the querystring
-  if err := global.ThisSession.Request.ParseForm(); err != nil {
-    fmt.Println(err)
-  }
+  logger.CheckError(global.ThisSession.Request.ParseForm())
 
   // build the response
   response := Response{}
@@ -33,9 +32,7 @@ func MozAutoconfig() string {
   var result bytes.Buffer
   template := global.Templates["autoconfig.xml"]
   err := template.Execute(&result, response)
-  if err != nil {
-    fmt.Println(err)
-  }
+  logger.CheckError(err)
 
   // return our string of xml
   return result.String()
@@ -53,9 +50,7 @@ func MsAutoDiscoverXML() string {
   // </Autodiscover>
 
   // Parse the form to get the values
-  if err := global.ThisSession.Request.ParseForm(); err != nil {
-    fmt.Println(err)
-  }
+  logger.CheckError(global.ThisSession.Request.ParseForm())
 
   // convert the input to a string so we can extract the email address
   form := fmt.Sprintf("%s",global.ThisSession.Request.Form)
@@ -68,7 +63,7 @@ func MsAutoDiscoverXML() string {
   replace := regexp.MustCompile(`\<[\/]?EMailAddress\>`)
   email = replace.ReplaceAllString(email,``)
 
-  fmt.Printf("Session %s Request for email : %s\r\f",global.ThisSession.ID,email)
+  logger.Log("Session ",global.ThisSession.ID ," Request for email : ",email)
   // build the reponse
   response := Response{}
   response.Email = email
@@ -79,9 +74,7 @@ func MsAutoDiscoverXML() string {
   global.ThisSession.ContentType = "application/xml"
   var result bytes.Buffer
   err := template.Execute(&result, response)
-  if err != nil {
-    fmt.Println(err)
-  }
+  logger.CheckError(err)
 
   // return our string of xml
   return result.String()
@@ -93,7 +86,6 @@ func MsAutoDiscoverJSON() string {
   // /autodiscover/autodiscover.json?Email=you@your.domain&Protocol=Autodiscoverv1&RedirectCount=1
   email = global.ThisSession.Request.FormValue("Email")
   protocol := global.ThisSession.Request.FormValue("Protocol")
-  fmt.Println(protocol)
   global.ThisSession.ContentType = "application/json"
   switch strings.ToLower(protocol) {
   case "autodiscoverv1":
@@ -102,13 +94,11 @@ func MsAutoDiscoverJSON() string {
     response.Url = fmt.Sprintf("%s/Autodiscover/Autodiscover.xml", global.MainConfig.BaseURL)
     return global.JSONify(response)
   default:
-
     response := MSAutodiscoverJSONError{}
     response.ErrorCode = "InvalidProtocol";
     response.ErrorMessage = fmt.Sprintf("The given protocol value '%s' is invalid. Supported values are 'AutodiscoverV1'", protocol)
     return global.JSONify(response)
   }
-
 }
 func DefaultResponse() string {
   response := Response{}