mirror of https://github.com/carlostrub/sisyphus
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241 lines
5.7 KiB
Go
241 lines
5.7 KiB
Go
package main
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import (
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"os/exec"
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"os/signal"
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"strconv"
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"syscall"
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"github.com/urfave/cli"
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)
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var (
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// Processed is a map of e-mail IDs and the value set to true if Junk
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// Processed map[string]bool
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)
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func main() {
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// Get working directory
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wd, err := os.Getwd()
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if err != nil {
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panic(err)
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}
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// Define App
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app := cli.NewApp()
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app.Name = "Sisyphus"
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app.Usage = "Intelligent Junk and Spam Mail Handler"
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app.UsageText = `sisyphus [global options] command [command options]
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Sisyphus applies artificial intelligence to filter
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Junk mail in an unobtrusive way. Both, classification and learning
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operate directly on the Maildir of a user in a fully transparent mode,
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without any need for configuration or active operation.`
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app.HelpName = "Intelligent Junk and Spam Mail Handler"
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app.Version = "0.0.0"
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app.Copyright = "(c) 2017, Carlo Strub. All rights reserved. This binary is licensed under a BSD 3-Clause License."
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app.Authors = []cli.Author{
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cli.Author{
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Name: "Carlo Strub",
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Email: "cs@carlostrub.ch",
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},
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}
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maildirPaths := cli.StringSlice([]string{
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wd + "/Maildir",
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})
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var pidfile *string
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pidfile = new(string)
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app.Flags = []cli.Flag{
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cli.StringSliceFlag{
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Name: "maildirs, d",
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Value: &maildirPaths,
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EnvVar: "SISYPHUS_DIRS",
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Usage: "Comma separated list of paths to the Maildir directories",
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},
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cli.StringFlag{
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Name: "pidfile, p",
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Value: "/tmp/sisyphus.pid",
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EnvVar: "SISYPHUS_PID",
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Usage: "Location of PID file",
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Destination: pidfile,
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},
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}
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app.Commands = []cli.Command{
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{
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Name: "run",
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Aliases: []string{"u"},
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Usage: "run sisyphus",
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Action: func(c *cli.Context) {
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log.Print("App runs..........")
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// Make arrangement to remove PID file upon receiving the SIGTERM from kill command
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ch := make(chan os.Signal, 1)
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signal.Notify(ch, os.Interrupt, os.Kill, syscall.SIGTERM)
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go func() {
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signalType := <-ch
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signal.Stop(ch)
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log.Println("Exit command received. Exiting sisyphus...")
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// this is a good place to flush everything to disk
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// before terminating.
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log.Println("Received signal type: ", signalType)
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// remove PID file
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os.Remove(*pidfile)
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os.Exit(0)
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}()
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// var maildir []string
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// if maildir == nil {
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// return errors.New("no maildir selected")
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// }
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//
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// // Load the Maildir
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// mails, err := Index(maildirPaths[0])
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// if err != nil {
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// return cli.NewExitError(err, 66)
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// }
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//
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// fmt.Println(mails)
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//
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// // Open the database
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// db, err := openDB(maildirPaths[0])
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// if err != nil {
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// return cli.NewExitError(err, 66)
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// }
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// defer db.Close()
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mux := http.NewServeMux()
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log.Fatalln(http.ListenAndServe(":8080", mux))
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},
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},
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{
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// See
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// https://www.socketloop.com/tutorials/golang-daemonizing-a-simple-web-server-process-example
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// for the process we are using to daemonize
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Name: "start",
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Aliases: []string{"s"},
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Usage: "start sisyphus daemon in the background",
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Action: func(c *cli.Context) error {
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// check if daemon already running.
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if _, err := os.Stat(*pidfile); err == nil {
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return cli.NewExitError("sisyphus running or "+*pidfile+" file exists.", 69)
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}
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cmd := exec.Command(os.Args[0], "run")
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cmd.Start()
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log.Printf("starting sisyphus process ID [%v]\n", cmd.Process.Pid)
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log.Println("sisyphus started")
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err := savePID(*pidfile, cmd.Process.Pid)
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if err != nil {
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return cli.NewExitError(err, 73)
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}
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return nil
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},
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},
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{
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Name: "stop",
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Aliases: []string{"e"},
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Usage: "stop sisyphus daemon",
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Action: func(c *cli.Context) error {
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_, err := os.Stat(*pidfile)
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if err != nil {
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return cli.NewExitError("sisyphus is not running", 64)
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}
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processIDRaw, err := ioutil.ReadFile(*pidfile)
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if err != nil {
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return cli.NewExitError("sisyphus is not running", 64)
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}
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processID, err := strconv.Atoi(string(processIDRaw))
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if err != nil {
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return cli.NewExitError("unable to read and parse process id found in "+*pidfile, 74)
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}
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process, err := os.FindProcess(processID)
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if err != nil {
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e := fmt.Sprintf("Unable to find process ID [%v] with error %v \n", processID, err)
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return cli.NewExitError(e, 71)
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}
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// remove PID file
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os.Remove(*pidfile)
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log.Printf("stopping sisyphus process ID [%v]\n", processID)
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// kill process and exit immediately
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err = process.Kill()
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if err != nil {
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e := fmt.Sprintf("Unable to kill process ID [%v] with error %v \n", processID, err)
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return cli.NewExitError(e, 71)
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}
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log.Println("sisyphus stopped")
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os.Exit(0)
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return nil
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},
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},
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{
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Name: "restart",
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Aliases: []string{"r"},
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Usage: "restart sisyphus daemon",
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Action: func(c *cli.Context) error {
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_, err := os.Stat(*pidfile)
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if err != nil {
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return cli.NewExitError("sisyphus is not running", 64)
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}
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pid, err := ioutil.ReadFile(*pidfile)
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if err != nil {
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return cli.NewExitError("sisyphus is not running", 64)
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}
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cmd := exec.Command(os.Args[0], "stop")
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err = cmd.Start()
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if err != nil {
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return cli.NewExitError(err, 64)
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}
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log.Printf("stopping sisyphus process ID [%v]\n", string(pid))
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cmd = exec.Command(os.Args[0], "start")
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err = cmd.Start()
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if err != nil {
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return cli.NewExitError(err, 64)
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}
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log.Println("sisyphus restarted")
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return nil
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},
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},
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{
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Name: "status",
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Aliases: []string{"i"},
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Usage: "status of sisyphus",
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Action: func(c *cli.Context) error {
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log.Println("here, we should get statistics from the db, TBD...")
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return nil
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},
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},
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}
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app.Run(os.Args)
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}
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