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mumbledj/bot/startup.go

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2016-06-21 02:16:05 +02:00
/*
* MumbleDJ
* By Matthieu Grieger
* bot/startup.go
* Copyright (c) 2016 Matthieu Grieger (MIT License)
*/
package bot
import (
"errors"
"fmt"
"os/exec"
"github.com/Sirupsen/logrus"
"github.com/spf13/viper"
)
// PerformStartupChecks executes the suite of startup checks that are run before the bot
// connects to the server.
func PerformStartupChecks() {
logrus.WithFields(logrus.Fields{
"num_services": fmt.Sprintf("%d", len(DJ.AvailableServices)),
}).Infoln("Checking for availability of services...")
for i := len(DJ.AvailableServices) - 1; i >= 0; i-- {
if err := DJ.AvailableServices[i].CheckAPIKey(); err != nil {
name := DJ.AvailableServices[i].GetReadableName()
logrus.WithFields(logrus.Fields{
"service": name,
"error": err.Error(),
}).Warnln("A startup check discovered an issue. The service will be disabled.")
// Remove service from enabled services.
DJ.AvailableServices = append(DJ.AvailableServices[:i], DJ.AvailableServices[i+1:]...)
}
}
if len(DJ.AvailableServices) == 0 {
logrus.Fatalln("The bot cannot continue as no services are enabled.")
}
if err := checkYouTubeDLInstallation(); err != nil {
logrus.Fatalln("youtube-dl is either not installed or is not discoverable in $PATH. youtube-dl is required to download audio.")
}
if viper.GetString("defaults.player_command") == "ffmpeg" {
if err := checkFfmpegInstallation(); err != nil {
logrus.Fatalln("ffmpeg is either not installed or is not discoverable in $PATH. If you would like to use avconv instead, change the defaults.player_command value in the configuration file.")
}
} else if viper.GetString("defaults.player_command") == "avconv" {
if err := checkAvconvInstallation(); err != nil {
logrus.Fatalln("avconv is either not installed or is not discoverable in $PATH. If you would like to use ffmpeg instead, change the defaults.player_command value in the configuration file.")
}
} else {
logrus.Fatalln("The player command provided in the configuration file is invalid. Valid choices are: \"ffmpeg\", \"avconv\".")
}
if err := checkAria2Installation(); err != nil {
logrus.Warnln("aria2 is not installed or is not discoverable in $PATH. The bot will still partially work, but some services will not work properly.")
}
}
func checkYouTubeDLInstallation() error {
logrus.Infoln("Checking YouTubeDL installation...")
command := exec.Command("youtube-dl", "--version")
if err := command.Run(); err != nil {
return errors.New("youtube-dl is not properly installed")
}
return nil
}
func checkFfmpegInstallation() error {
logrus.Infoln("Checking ffmpeg installation...")
command := exec.Command("ffmpeg", "-version")
if err := command.Run(); err != nil {
return errors.New("ffmpeg is not properly installed")
}
return nil
}
func checkAvconvInstallation() error {
logrus.Infoln("Checking avconv installation...")
command := exec.Command("avconv", "-version")
if err := command.Run(); err != nil {
return errors.New("avconv is not properly installed")
}
return nil
}
func checkAria2Installation() error {
logrus.Infoln("Checking aria2c installation...")
command := exec.Command("aria2c", "-v")
if err := command.Run(); err != nil {
return errors.New("aria2c is not properly installed")
}
return nil
}