logmania/cmd/server.go

147 lines
3.3 KiB
Go

package cmd
import (
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/NYTimes/gziphandler"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"dev.sum7.eu/genofire/golang-lib/file"
"dev.sum7.eu/genofire/golang-lib/worker"
"dev.sum7.eu/genofire/logmania/bot"
"dev.sum7.eu/genofire/logmania/database"
"dev.sum7.eu/genofire/logmania/input"
allInput "dev.sum7.eu/genofire/logmania/input/all"
"dev.sum7.eu/genofire/logmania/lib"
"dev.sum7.eu/genofire/logmania/output"
allOutput "dev.sum7.eu/genofire/logmania/output/all"
)
var (
configPath string
config *lib.Config
db *database.DB
dbSaveWorker *worker.Worker
out output.Output
in input.Input
logChannel chan *log.Entry
logmaniaBot *bot.Bot
)
// serverCmd represents the serve command
var serverCmd = &cobra.Command{
Use: "server",
Short: "Runs the logmania server",
Example: "logmania server --config /etc/yanic.toml",
Run: func(cmd *cobra.Command, args []string) {
log.SetFormatter(&log.TextFormatter{
DisableTimestamp: true,
})
config := &lib.Config{}
err := file.ReadTOML(configPath, config)
if config == nil || err != nil {
log.Panicf("Could not load '%s' for configuration.", configPath)
}
if config.Debug {
log.SetLevel(log.DebugLevel)
}
db = database.ReadDBFile(config.DB)
go func() { dbSaveWorker = file.NewSaveJSONWorker(time.Minute, config.DB, db) }()
logmaniaBot = bot.NewBot(db)
out = allOutput.Init(config.Output, db, logmaniaBot)
logChannel = make(chan *log.Entry)
go func() {
for a := range logChannel {
out.Send(a, nil)
}
}()
if config.AlertCheck.Duration > time.Duration(time.Second) {
go db.Alert(config.AlertCheck.Duration, out.Send)
}
log.WithField("defaults", len(db.DefaultNotify)).Info("starting logmania")
if config.HTTPAddress != "" {
if config.Webroot != "" {
http.Handle("/", gziphandler.GzipHandler(http.FileServer(http.Dir(config.Webroot))))
}
srv := &http.Server{
Addr: config.HTTPAddress,
}
go func() {
if err := srv.ListenAndServe(); err != http.ErrServerClosed {
log.Panic(err)
}
}()
}
in = allInput.Init(config.Input, logChannel)
go in.Listen()
// Wait for system signal
sigchan := make(chan os.Signal, 1)
signal.Notify(sigchan, syscall.SIGTERM, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGUSR1)
for sig := range sigchan {
switch sig {
case syscall.SIGTERM:
log.Panic("terminated of logmania")
os.Exit(0)
case syscall.SIGQUIT:
quit()
case syscall.SIGHUP:
quit()
case syscall.SIGUSR1:
reload()
}
}
},
}
func quit() {
dbSaveWorker.Close()
file.SaveJSON(config.DB, db)
in.Close()
out.Close()
log.Info("quit of logmania")
os.Exit(0)
}
func reload() {
log.Info("reload config file")
var config lib.Config
err := file.ReadTOML(configPath, &config)
if err != nil {
log.Errorf("reload: could not load '%s' for new configuration. Skip reload.", configPath)
return
}
if config.Debug {
log.SetLevel(log.DebugLevel)
} else {
log.SetLevel(log.InfoLevel)
}
in.Close()
in = allInput.Init(config.Input, logChannel)
go in.Listen()
out.Close()
out = allOutput.Init(config.Output, db, logmaniaBot)
}
func init() {
RootCmd.AddCommand(serverCmd)
serverCmd.Flags().StringVarP(&configPath, "config", "c", "logmania.conf", "Path to configuration file")
}