doggo/cmd/hub.go

package main

import (
	"github.com/miekg/dns"
	"github.com/mr-karan/doggo/pkg/resolvers"
	"github.com/sirupsen/logrus"
)

// Hub represents the structure for all app wide functions and structs.
type Hub struct {
	Logger     *logrus.Logger
	Version    string
	QueryFlags QueryFlags
	Questions  []dns.Question
	Resolver   resolvers.Resolver
}

// QueryFlags is used store the value of CLI flags.
type QueryFlags struct {
	QNames           []string `koanf:"query"`
	QTypes           []string `koanf:"type"`
	QClasses         []string `koanf:"class"`
	Nameservers      []string `koanf:"namserver"`
	IsDOH            bool     `koanf:"doh"`
	IsDOT            bool     `koanf:"dot"`
	IsUDP            bool     `koanf:"udp"`
	UseTCP           bool     `koanf:"tcp"`
	UseIPv4          bool     `koanf:"ipv4"`
	UseIPv6          bool     `koanf:"ipv6"`
	DisplayTimeTaken bool     `koanf:"time"`
	ShowJSON         bool     `koanf:"json"`
	UseSearchList    bool     `koanf:"search"`
	Ndots            int      `koanf:"ndots"`
}

// NewHub initializes an instance of Hub which holds app wide configuration.
func NewHub(logger *logrus.Logger, buildVersion string) *Hub {
	// Initialise Resolver
	hub := &Hub{
		Logger:  logger,
		Version: buildVersion,
		QueryFlags: QueryFlags{
			QNames:      []string{},
			QTypes:      []string{},
			QClasses:    []string{},
			Nameservers: []string{},
		},
	}
	return hub
}

// initLogger initializes logger
func initLogger() *logrus.Logger {
	logger := logrus.New()
	logger.SetFormatter(&logrus.TextFormatter{
		DisableTimestamp:       true,
		DisableLevelTruncation: true,
	})
	return logger
}