Server and client stubs.

Implemented HTTP server with configuration getting stub.

Implemented CLI client with configuration getting stub.

internal/logger/exported.go

@@ -0,0 +1,76 @@
+package logger
+
+import (
+	// stdlib
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	// other
+	"github.com/rs/zerolog"
+)
+
+var (
+	Logger         zerolog.Logger
+	SuperVerbosive bool
+
+	loggerInitialized bool
+)
+
+// Initialize initializes zerolog with proper formatting and log level.
+func Initialize() {
+	// Check environment for logger level.
+	// Defaulting to INFO.
+	loggerLevel, loggerLevelFound := os.LookupEnv("LOGGER_LEVEL")
+	if loggerLevelFound {
+		fmt.Println("Setting logger level to:", loggerLevel)
+		switch strings.ToUpper(loggerLevel) {
+		case "DEBUG":
+			zerolog.SetGlobalLevel(zerolog.DebugLevel)
+		case "INFO":
+			zerolog.SetGlobalLevel(zerolog.InfoLevel)
+		case "WARN":
+			zerolog.SetGlobalLevel(zerolog.WarnLevel)
+		case "ERROR":
+			zerolog.SetGlobalLevel(zerolog.ErrorLevel)
+		case "FATAL":
+			zerolog.SetGlobalLevel(zerolog.FatalLevel)
+		default:
+			fmt.Println("Invalid logger level passed:", loggerLevel)
+			fmt.Println("Fofcing INFO")
+			zerolog.SetGlobalLevel(zerolog.InfoLevel)
+		}
+	} else {
+		fmt.Println("Setting logger level to: info")
+		zerolog.SetGlobalLevel(zerolog.InfoLevel)
+	}
+
+	output := zerolog.ConsoleWriter{Out: os.Stdout, NoColor: false, TimeFormat: time.RFC3339}
+	output.FormatLevel = func(i interface{}) string {
+		var v string
+		if ii, ok := i.(string); ok {
+			ii = strings.ToUpper(ii)
+			switch ii {
+			case "DEBUG":
+				v = fmt.Sprintf("\x1b[30m%-5s\x1b[0m", ii)
+			case "ERROR":
+				v = fmt.Sprintf("\x1b[31m%-5s\x1b[0m", ii)
+			case "FATAL":
+				v = fmt.Sprintf("\x1b[35m%-5s\x1b[0m", ii)
+			case "INFO":
+				v = fmt.Sprintf("\x1b[32m%-5s\x1b[0m", ii)
+			case "PANIC":
+				v = fmt.Sprintf("\x1b[36m%-5s\x1b[0m", ii)
+			case "WARN":
+				v = fmt.Sprintf("\x1b[33m%-5s\x1b[0m", ii)
+			default:
+				v = ii
+			}
+		}
+		return fmt.Sprintf("| %s |", v)
+	}
+
+	Logger = zerolog.New(output).With().Timestamp().Logger()
+	loggerInitialized = true
+}