added config

.gitignore

@@ -18,4 +18,10 @@ lightningTip
 .idea
 
 # Log file
-lightningTip.log
+lightningTip.log
+
+# Config file
+lightningTip.conf
+
+# Dep vendor directory
+vendor

Gopkg.lock

@@ -0,0 +1,21 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  name = "github.com/jessevdk/go-flags"
+  packages = ["."]
+  revision = "96dc06278ce32a0e9d957d590bb987c81ee66407"
+  version = "v1.3.0"
+
+[[projects]]
+  name = "github.com/op/go-logging"
+  packages = ["."]
+  revision = "b2cb9fa56473e98db8caba80237377e83fe44db5"
+  version = "v1"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "25f60b14acb88f3ea9cb02b446b7ccc98239db04d24c0052202d694ff35ff33a"
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

@@ -0,0 +1,38 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/jessevdk/go-flags"
+  version = "1.3.0"
+
+[[constraint]]
+  name = "github.com/op/go-logging"
+  version = "1.0.0"
+
+[prune]
+  go-tests = true
+  unused-packages = true

config.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"github.com/jessevdk/go-flags"
+	"github.com/op/go-logging"
+	"strings"
+)
+
+const (
+	defaultConfigFile = "lightningTip.conf"
+
+	defaultLogFile  = "lightningTip.log"
+	defaultLogLevel = "debug"
+)
+
+type config struct {
+	ConfigFile string `long:"config"  Description:"Config file location"`
+
+	LogFile  string `long:"logfile" Description:"Log file location"`
+	LogLevel string `long:"loglevel" Description:"Log level: debug, info, warning, error"`
+}
+
+var cfg config
+
+func initConfig() {
+	cfg = config{
+		ConfigFile: defaultConfigFile,
+
+		LogFile:  defaultLogFile,
+		LogLevel: defaultLogLevel,
+	}
+
+	_, err := flags.Parse(&cfg)
+
+	errFile := flags.IniParse(cfg.ConfigFile, &cfg)
+
+	// Parse flags again to override config file
+	_, err = flags.Parse(&cfg)
+
+	// Default log level
+	logLevel := logging.DEBUG
+
+	switch strings.ToLower(cfg.LogLevel) {
+	case "info":
+		logLevel = logging.INFO
+
+	case "warning":
+		logLevel = logging.WARNING
+
+	case "error":
+		logLevel = logging.ERROR
+	}
+
+	initLogFile(cfg.LogFile, logLevel)
+
+	if err != nil {
+		log.Error("Failed to parse command line flags")
+	}
+
+	if errFile != nil {
+		log.Infof("Could not parse config file: %v", errFile)
+	}
+
+}

lightningtip.go

@@ -2,4 +2,6 @@ package main
 
 func main() {
 	initLog()
+
+	initConfig()
 }

log.go

@@ -1,34 +1,40 @@
 package main
 
 import (
+	"fmt"
 	"github.com/op/go-logging"
 	"os"
 )
 
-var log = logging.MustGetLogger("lightningTip")
+var log = logging.MustGetLogger("")
 var logFormat = logging.MustStringFormatter("%{time:2006-01-02 15:04:05.000} [%{level}] %{message}")
 
+var backendConsole = logging.NewLogBackend(os.Stdout, "", 0)
+
 func initLog() {
 	logging.SetFormatter(logFormat)
-	logging.SetLevel(logging.DEBUG, "")
-
-	backendConsole := logging.NewLogBackend(os.Stdout, "", 0)
 
 	logging.SetBackend(backendConsole)
+}
 
-	file, err := os.OpenFile("lightningTip.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0600)
+func initLogFile(logFile string, level logging.Level) {
+	file, err := os.OpenFile(logFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0600)
 
-	if err == nil {
-		defer file.Close()
+	if err != nil {
+		log.Error("Failed to initialize log file: " + fmt.Sprint(err))
 
-		backendFile := logging.NewLogBackend(file, "", 0)
-
-		logging.SetBackend(backendConsole, backendFile)
-
-		log.Debug("Successfully initialized log file")
-
-	} else {
-		log.Critical("Failed to initialize log file: ", err)
+		return
 	}
 
+	backendFile := logging.NewLogBackend(file, "", 0)
+
+	backendFileLeveled := logging.AddModuleLevel(backendFile)
+	backendFileLeveled.SetLevel(level, "")
+
+	backendConsoleLeveled := logging.AddModuleLevel(backendConsole)
+	backendConsoleLeveled.SetLevel(level, "")
+
+	logging.SetBackend(backendConsoleLeveled, backendFileLeveled)
+
+	log.Debug("Successfully initialized log file")
 }