/
main.go
155 lines (125 loc) · 2.83 KB
/
main.go
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package main
import (
"flag"
"log"
"os"
"os/signal"
"syscall"
"github.com/BurntSushi/toml"
)
type Config struct {
MasterConfig masterConfig
PluginConfig []pluginConfig
LoggerConfig []loggerConfig
}
type PluginConfig interface {
GetName() string
GetPath() string
GetArgs() []string
}
type masterConfig struct {
Logfile string
}
type pluginConfig struct {
Name string
Path string
Args []string
}
type loggerConfig struct {
Name string
Path string
Args []string
}
func (x *pluginConfig) GetName() string {
return x.Name
}
func (x *pluginConfig) GetPath() string {
return x.Path
}
func (x *pluginConfig) GetArgs() []string {
return x.Args
}
func (x *loggerConfig) GetName() string {
return x.Name
}
func (x *loggerConfig) GetPath() string {
return x.Path
}
func (x *loggerConfig) GetArgs() []string {
return x.Args
}
var pluginManager *PluginManager
var logManager *LogManager
var logfile *os.File
func errExit(reason string) {
log.Println("Fatal error:", reason)
if pluginManager != nil {
err := pluginManager.StopPlugins()
if err != nil {
log.Println("Error stopping plugins:", err)
}
}
if logManager != nil {
err := logManager.StopLoggers()
if err != nil {
log.Println("Error stopping loggers:", err)
}
}
logfile.Close()
os.Exit(1)
}
func main() {
signalHandler := make(chan os.Signal, 2)
signal.Notify(signalHandler,
syscall.SIGHUP,
syscall.SIGINT,
syscall.SIGTERM,
syscall.SIGQUIT)
var configPath = flag.String("config", "", "projectmain config file")
flag.Parse()
var config Config
if _, err := toml.DecodeFile(*configPath, &config); err != nil {
log.Fatal("Failed to read config file:", err)
}
// our internal logfile
logfile, err := os.OpenFile(config.MasterConfig.Logfile,
os.O_RDWR|os.O_CREATE|os.O_APPEND,
0644)
if err != nil {
log.Fatal("Failed to create log file:", err)
}
defer logfile.Close()
log.SetOutput(logfile)
// this is messy...done for easier toml parsing
// there's almost certainly a better way to do this
loggerConfigs := make([]PluginConfig, len(config.LoggerConfig))
for i := range config.LoggerConfig {
loggerConfigs[i] = &config.LoggerConfig[i]
}
pluginConfigs := make([]PluginConfig, len(config.PluginConfig))
for i := range config.PluginConfig {
pluginConfigs[i] = &config.PluginConfig[i]
}
logManager = NewLogManager(loggerConfigs)
err = logManager.StartLoggers()
if err != nil {
errExit(err.Error())
}
pluginManager = NewPluginManager(pluginConfigs)
err = pluginManager.StartPlugins()
if err != nil {
errExit(err.Error())
}
for signal := range signalHandler {
log.Println(signal, "received. Shutting down.")
err = pluginManager.StopPlugins()
if err != nil {
log.Println("Error stopping plugins:", err)
}
err = logManager.StopLoggers()
if err != nil {
log.Println("Error stopping plugins:", err)
}
os.Exit(0)
}
}