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main.go
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main.go
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package main
// sysflux
// Copyright (C) 2018 Maximilian Pachl
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// ---------------------------------------------------------------------------------------
// imports
// ---------------------------------------------------------------------------------------
import (
"flag"
"os"
"syscall"
"time"
"github.com/faryon93/util"
"github.com/influxdata/influxdb/client/v2"
"github.com/sirupsen/logrus"
)
// ---------------------------------------------------------------------------------------
// application entry
// ---------------------------------------------------------------------------------------
func main() {
var colors bool
var timeout time.Duration
flag.BoolVar(&colors, "colors", false, "force color logging")
flag.DurationVar(&timeout, "timeout", 800*time.Millisecond, "influxdb write timeout")
flag.Parse()
// setup logger
formater := logrus.TextFormatter{ForceColors: colors}
logrus.SetFormatter(&formater)
logrus.SetOutput(os.Stdout)
logrus.Infoln("starting", GetAppVersion())
conf, err := LoadConf()
if err != nil {
panic(err)
}
// construct the influxdb configuration
influxConfig := client.HTTPConfig{
Addr: conf.Influx.Addr,
Username: conf.Influx.User,
Password: conf.Influx.Password,
Timeout: timeout,
}
recorders := make([]*Recorder, 0)
for i, syslog := range conf.Syslog {
influx, err := client.NewHTTPClient(influxConfig)
if err != nil {
logrus.Errorf("syslog(%d): failed to create influx client: %s", i, err.Error())
continue
}
logrus.Infof("starting syslog(%d) listener (sz: %d, timeout: %s, listen: %s)",
i, syslog.BatchSize, syslog.BatchTimeout, syslog.Listen)
// setup the recorder
rec := Recorder{Influx: influx, Conf: *syslog}
err = rec.Setup()
if err != nil {
logrus.Errorf("syslog(%d): failed to setup recorders: %s", i, err.Error())
continue
}
// start the recorder
recorders = append(recorders, &rec)
}
// wait for stop signals
util.WaitSignal(os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
logrus.Infoln("received SIGINT / SIGTERM going to shutdown")
for i, rec := range recorders {
rec.Stop()
logrus.Infof("stopped syslog(%d) recorder", i)
}
}