179 lines
5.1 KiB
Go
179 lines
5.1 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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log "github.com/Sirupsen/logrus"
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"github.com/containous/flaeg"
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"github.com/containous/staert"
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"github.com/containous/traefik/acme"
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"github.com/containous/traefik/middlewares"
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"github.com/containous/traefik/provider"
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"github.com/containous/traefik/types"
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fmtlog "log"
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"net/http"
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"os"
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"reflect"
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"runtime"
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"strings"
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"text/template"
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)
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var versionTemplate = `Version: {{.Version}}
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Go version: {{.GoVersion}}
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Built: {{.BuildTime}}
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OS/Arch: {{.Os}}/{{.Arch}}`
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func main() {
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runtime.GOMAXPROCS(runtime.NumCPU())
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//traefik config inits
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traefikConfiguration := NewTraefikConfiguration()
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traefikPointersConfiguration := NewTraefikDefaultPointersConfiguration()
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//traefik Command init
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traefikCmd := &flaeg.Command{
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Name: "traefik",
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Description: `traefik is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease.
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Complete documentation is available at https://traefik.io`,
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Config: traefikConfiguration,
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DefaultPointersConfig: traefikPointersConfiguration,
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Run: func() error {
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run(traefikConfiguration)
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return nil
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},
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}
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//version Command init
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versionCmd := &flaeg.Command{
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Name: "version",
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Description: `Print version`,
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Config: struct{}{},
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DefaultPointersConfig: struct{}{},
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Run: func() error {
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tmpl, err := template.New("").Parse(versionTemplate)
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if err != nil {
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return err
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}
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v := struct {
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Version string
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GoVersion string
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BuildTime string
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Os string
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Arch string
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}{
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Version: Version,
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GoVersion: runtime.Version(),
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BuildTime: BuildDate,
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Os: runtime.GOOS,
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Arch: runtime.GOARCH,
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}
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if err := tmpl.Execute(os.Stdout, v); err != nil {
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return err
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}
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fmt.Printf("\n")
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return nil
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},
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}
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//init flaeg source
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f := flaeg.New(traefikCmd, os.Args[1:])
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//add custom parsers
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f.AddParser(reflect.TypeOf(EntryPoints{}), &EntryPoints{})
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f.AddParser(reflect.TypeOf(DefaultEntryPoints{}), &DefaultEntryPoints{})
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f.AddParser(reflect.TypeOf(types.Constraints{}), &types.Constraints{})
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f.AddParser(reflect.TypeOf(provider.Namespaces{}), &provider.Namespaces{})
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f.AddParser(reflect.TypeOf([]acme.Domain{}), &acme.Domains{})
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//add version command
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f.AddCommand(versionCmd)
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if _, err := f.Parse(traefikCmd); err != nil {
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fmtlog.Println(err)
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os.Exit(-1)
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}
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//staert init
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s := staert.NewStaert(traefikCmd)
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//init toml source
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toml := staert.NewTomlSource("traefik", []string{traefikConfiguration.ConfigFile, "/etc/traefik/", "$HOME/.traefik/", "."})
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//add sources to staert
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s.AddSource(toml)
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s.AddSource(f)
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if _, err := s.LoadConfig(); err != nil {
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fmtlog.Println(fmt.Errorf("Error reading TOML config file %s : %s", toml.ConfigFileUsed(), err))
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}
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traefikConfiguration.ConfigFile = toml.ConfigFileUsed()
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if err := s.Run(); err != nil {
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fmtlog.Println(err)
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os.Exit(-1)
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}
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os.Exit(0)
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}
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func run(traefikConfiguration *TraefikConfiguration) {
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fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
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// load global configuration
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globalConfiguration := traefikConfiguration.GlobalConfiguration
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http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = globalConfiguration.MaxIdleConnsPerHost
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loggerMiddleware := middlewares.NewLogger(globalConfiguration.AccessLogsFile)
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defer loggerMiddleware.Close()
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if globalConfiguration.File != nil && len(globalConfiguration.File.Filename) == 0 {
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// no filename, setting to global config file
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if len(traefikConfiguration.ConfigFile) != 0 {
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globalConfiguration.File.Filename = traefikConfiguration.ConfigFile
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} else {
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log.Errorln("Error using file configuration backend, no filename defined")
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}
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}
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if len(globalConfiguration.EntryPoints) == 0 {
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globalConfiguration.EntryPoints = map[string]*EntryPoint{"http": {Address: ":80"}}
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globalConfiguration.DefaultEntryPoints = []string{"http"}
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}
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if globalConfiguration.Debug {
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globalConfiguration.LogLevel = "DEBUG"
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}
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// logging
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level, err := log.ParseLevel(strings.ToLower(globalConfiguration.LogLevel))
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if err != nil {
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log.Fatal("Error getting level", err)
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}
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log.SetLevel(level)
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if len(globalConfiguration.TraefikLogsFile) > 0 {
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fi, err := os.OpenFile(globalConfiguration.TraefikLogsFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
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defer func() {
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if err := fi.Close(); err != nil {
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log.Error("Error closinf file", err)
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}
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}()
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if err != nil {
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log.Fatal("Error opening file", err)
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} else {
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log.SetOutput(fi)
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log.SetFormatter(&log.TextFormatter{DisableColors: true, FullTimestamp: true, DisableSorting: true})
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}
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} else {
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log.SetFormatter(&log.TextFormatter{FullTimestamp: true, DisableSorting: true})
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}
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jsonConf, _ := json.Marshal(globalConfiguration)
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log.Infof("Traefik version %s built on %s", Version, BuildDate)
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if len(traefikConfiguration.ConfigFile) != 0 {
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log.Infof("Using TOML configuration file %s", traefikConfiguration.ConfigFile)
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}
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log.Debugf("Global configuration loaded %s", string(jsonConf))
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server := NewServer(globalConfiguration)
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server.Start()
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defer server.Close()
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log.Info("Shutting down")
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}
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