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focalboard/server/main/main.go

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package main
import (
"flag"
"log"
"os"
"syscall"
"time"
"github.com/mattermost/mattermost-octo-tasks/server/server"
"github.com/mattermost/mattermost-octo-tasks/server/services/config"
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)
// ----------------------------------------------------------------------------------------------------
// WebSocket OnChange listener
const (
timeBetweenPidMonitoringChecks = 2 * time.Second
)
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func isProcessRunning(pid int) bool {
process, err := os.FindProcess(pid)
if err != nil {
return false
}
err = process.Signal(syscall.Signal(0))
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return err == nil
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}
func monitorPid(pid int) {
log.Printf("Monitoring PID: %d", pid)
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go func() {
for {
if !isProcessRunning(pid) {
log.Printf("Monitored process not found, exiting.")
os.Exit(1)
}
time.Sleep(timeBetweenPidMonitoringChecks)
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}
}()
}
func main() {
// config.json file
config, err := config.ReadConfigFile()
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if err != nil {
log.Fatal("Unable to read the config file: ", err)
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return
}
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// Command line args
pMonitorPid := flag.Int("monitorpid", -1, "a process ID")
pPort := flag.Int("port", config.Port, "the port number")
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singleUser := false
if pSingleUser := flag.Bool("single-user", false, "single user mode"); pSingleUser != nil {
singleUser = *pSingleUser
}
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flag.Parse()
if pMonitorPid != nil && *pMonitorPid > 0 {
monitorPid(*pMonitorPid)
}
if pPort != nil && *pPort > 0 && *pPort != config.Port {
// Override port
log.Printf("Port from commandline: %d", *pPort)
config.Port = *pPort
}
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server, err := server.New(config, singleUser)
if err != nil {
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log.Fatal("ListenAndServeTLS: ", err)
}
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if err := server.Start(); err != nil {
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log.Fatal("ListenAndServeTLS: ", err)
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}
}