chore: sync project files

server/logs/logs.go

@@ -0,0 +1,55 @@
+// Package logs exposes info, warning and error loggers.
+package logs
+
+import (
+	"io"
+	"log"
+	"strings"
+)
+
+var (
+	// Info is a logger at the 'info' logging level.
+	Info *log.Logger
+	// Warn is a logger at the 'warning' logging level.
+	Warn *log.Logger
+	// Err is a logger at the 'error' logging level.
+	Err *log.Logger
+)
+
+func parseFlags(logFlags string) int {
+	flags := 0
+	for _, v := range strings.Split(logFlags, ",") {
+		switch {
+		case v == "date":
+			flags |= log.Ldate
+		case v == "time":
+			flags |= log.Ltime
+		case v == "microseconds":
+			flags |= log.Lmicroseconds
+		case v == "longfile":
+			flags |= log.Llongfile
+		case v == "shortfile":
+			flags |= log.Lshortfile
+		case v == "UTC":
+			flags |= log.LUTC
+		case v == "msgprefix":
+			flags |= log.Lmsgprefix
+		case v == "stdFlags":
+			flags |= log.LstdFlags
+		default:
+			log.Fatalln("Invalid log flags string: ", logFlags)
+		}
+	}
+	if flags == 0 {
+		flags = log.LstdFlags
+	}
+	return flags
+}
+
+// Init initializes info, warning and error loggers given the flags and the output.
+func Init(output io.Writer, logFlags string) {
+	flags := parseFlags(logFlags)
+	Info = log.New(output, "I", flags)
+	Warn = log.New(output, "W", flags)
+	Err = log.New(output, "E", flags)
+}