Completed initial version of outbound flow

src/logger.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"io"
+	"io/ioutil"
 	"log"
 	"os"
 )
@@ -17,17 +19,30 @@ type Logger struct {
 	Error *log.Logger
 }
 
-func NewLogger() *Logger {
+func NewLogger(level int) *Logger {
+	output := os.Stdout
 	logger := new(Logger)
-	logger.Debug = log.New(os.Stdout,
+
+	logErr, logInfo, logDebug := func() (io.Writer, io.Writer, io.Writer) {
+		if level >= LogLevelDebug {
+			return output, output, output
+		}
+		if level >= LogLevelInfo {
+			return output, output, ioutil.Discard
+		}
+		return output, ioutil.Discard, ioutil.Discard
+	}()
+
+	logger.Debug = log.New(logDebug,
 		"DEBUG: ",
 		log.Ldate|log.Ltime|log.Lshortfile,
 	)
-	logger.Info = log.New(os.Stdout,
+
+	logger.Info = log.New(logInfo,
 		"INFO: ",
 		log.Ldate|log.Ltime|log.Lshortfile,
 	)
-	logger.Error = log.New(os.Stdout,
+	logger.Error = log.New(logErr,
 		"ERROR: ",
 		log.Ldate|log.Ltime|log.Lshortfile,
 	)