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local.go
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local.go
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package main
import (
"fmt"
"log"
"os"
"os/exec"
"github.com/BurntSushi/toml"
)
func GetGpmPath() string {
Homedir, err := os.UserHomeDir()
if err != nil {
log.Fatal(err)
}
path := Homedir + "/.gpm"
// check if path exists and create if not
if _, err := os.Stat(path); os.IsNotExist(err) {
err := os.Mkdir(path, 0755)
if err != nil {
log.Fatal(err)
}
}
return path
}
func GetGpmLogFile() string {
return GetGpmPath() + "/gpm.log"
}
func GetPidFolder() {
// check if pid folder exists and create if not
if _, err := os.Stat(GetGpmPath() + "/pids"); os.IsNotExist(err) {
err := os.Mkdir(GetGpmPath()+"/pids", 0755)
if err != nil {
log.Fatal(err)
}
}
}
func GetLogFolder() {
// check if log folder exists and create if not
if _, err := os.Stat(GetGpmPath() + "/logs"); os.IsNotExist(err) {
err := os.Mkdir(GetGpmPath()+"/logs", 0755)
if err != nil {
log.Fatal(err)
}
}
}
func GetProcessFolder() {
// check if process folder exists and create if not
if _, err := os.Stat(GetGpmPath() + "/processes"); os.IsNotExist(err) {
err := os.Mkdir(GetGpmPath()+"/processes", 0755)
if err != nil {
log.Fatal(err)
}
}
}
func SavePid(pid int, name string) {
GetPidFolder()
// save pid to file
file, err := os.Create(GetGpmPath() + "/pids/" + name + ".pid")
if err != nil {
log.Fatal(err)
}
defer file.Close()
file.WriteString(fmt.Sprintf("%d", pid))
pids[name] = pid
}
func SaveProcess(process string, name string, t TOML) {
GetProcessFolder()
// save process to file .toml
// check if file exists and create if not
if _, err := os.Stat(GetGpmPath() + "/processes/" + name + ".toml"); os.IsNotExist(err) {
file, err := os.Create(GetGpmPath() + "/processes/" + name + ".toml")
if err != nil {
log.Fatal(err)
}
defer file.Close()
} else {
// if file exists, delete it
err := os.Remove(GetGpmPath() + "/processes/" + name + ".toml")
if err != nil {
log.Fatal(err)
}
// create new file
file, err := os.Create(GetGpmPath() + "/processes/" + name + ".toml")
if err != nil {
log.Fatal(err)
}
defer file.Close()
}
// save process to file
file, err := os.OpenFile(GetGpmPath()+"/processes/"+name+".toml", os.O_APPEND|os.O_WRONLY, 0600)
if err != nil {
log.Fatal(err)
}
defer file.Close()
toml.NewEncoder(file).Encode(t)
}
func GetLogFile(name string) *os.File {
GetLogFolder()
// check if log file exists and create if not
if _, err := os.Stat(GetGpmPath() + "/logs/" + name + ".log"); os.IsNotExist(err) {
file, err := os.Create(GetGpmPath() + "/logs/" + name + ".log")
if err != nil {
log.Fatal(err)
}
defer file.Close()
return file
}
// if file exists, open it with read and write permissions
file, err := os.OpenFile(GetGpmPath()+"/logs/"+name+".log", os.O_RDWR|os.O_APPEND, 0666)
if err != nil {
log.Fatal(err)
}
return file
}
func GetLogFileError(name string) *os.File {
GetLogFolder()
// check if log file exists and create if not
if _, err := os.Stat(GetGpmPath() + "/logs/" + name + ".err"); os.IsNotExist(err) {
file, err := os.Create(GetGpmPath() + "/logs/" + name + ".err")
if err != nil {
log.Fatal(err)
}
defer file.Close()
return file
}
// if file exists, open it with read and write permissions
file, err := os.OpenFile(GetGpmPath()+"/logs/"+name+".err", os.O_RDWR|os.O_APPEND, 0666)
if err != nil {
log.Fatal(err)
}
return file
}
func GetPid(name string) int {
// check if pid file exists
if _, err := os.Stat(GetGpmPath() + "/pids/" + name + ".pid"); os.IsNotExist(err) {
log.Fatal("Process does not exist")
}
// read pid from file
file, err := os.Open(GetGpmPath() + "/pids/" + name + ".pid")
if err != nil {
log.Fatal(err)
}
defer file.Close()
var pid int
_, err = fmt.Fscanf(file, "%d", &pid)
if err != nil {
log.Fatal(err)
}
return pid
}
func GetProcess(name string) TOML {
// check if process file exists
if _, err := os.Stat(GetGpmPath() + "/processes/" + name + ".toml"); os.IsNotExist(err) {
log.Fatal("Process does not exist")
}
// read process from file
file, err := os.Open(GetGpmPath() + "/processes/" + name + ".toml")
if err != nil {
log.Fatal(err)
}
defer file.Close()
var t TOML
_, err = toml.NewDecoder(file).Decode(&t)
if err != nil {
log.Fatal(err)
}
return t
}
func DeletePid(name string) {
// check if pid file exists
if _, err := os.Stat(GetGpmPath() + "/pids/" + name + ".pid"); os.IsNotExist(err) {
log.Fatal("Process does not exist")
}
// delete pid file
err := os.Remove(GetGpmPath() + "/pids/" + name + ".pid")
if err != nil {
log.Fatal(err)
}
}
func DeleteProcess(name string) {
// check if process file exists
if _, err := os.Stat(GetGpmPath() + "/processes/" + name + ".toml"); os.IsNotExist(err) {
log.Fatal("Process does not exist")
}
// delete process file
err := os.Remove(GetGpmPath() + "/processes/" + name + ".toml")
if err != nil {
log.Fatal(err)
}
}
func DeleteLog(name string) {
// check if log file exists
if _, err := os.Stat(GetGpmPath() + "/logs/" + name + ".log"); os.IsNotExist(err) {
log.Fatal("Process does not exist")
}
// delete log file
err := os.Remove(GetGpmPath() + "/logs/" + name + ".log")
if err != nil {
log.Fatal(err)
}
}
func GetDaemonPid() int {
// check if pid file exists
if _, err := os.Stat(GetGpmPath() + "/daemon.pid"); os.IsNotExist(err) {
log.Fatal("Daemon does not exist")
}
// read pid from file
file, err := os.Open(GetGpmPath() + "/daemon.pid")
if err != nil {
log.Fatal(err)
}
defer file.Close()
var pid int
_, err = fmt.Fscanf(file, "%d", &pid)
if err != nil {
log.Fatal(err)
}
return pid
}
func DoesDaemonWork() bool {
// check if daemon is running
if _, err := os.Stat(GetGpmPath() + "/daemon.pid"); os.IsNotExist(err) {
return false
}
// find process by pid and check if it is daemon
pid := GetDaemonPid()
_, err := os.FindProcess(pid)
return err == nil
}
func StartDaemon() {
// check if daemon is running
if DoesDaemonWork() {
log.Fatal("Daemon is already running")
}
// start daemon
cmd := exec.Command("gpm", "daemon")
err := cmd.Start()
if err != nil {
log.Fatal(err)
}
err = cmd.Process.Release() // release process from parent
if err != nil {
log.Fatal(err)
}
// save pid to file
}
func SaveDaemonPid() {
// get own pid
pid := os.Getpid()
// check if file exists
if _, err := os.Stat(GetGpmPath() + "/daemon.pid"); os.IsNotExist(err) {
file, err := os.Create(GetGpmPath() + "/daemon.pid")
if err != nil {
log.Fatal(err)
}
defer file.Close()
} else {
// if file exists, delete it
err := os.Remove(GetGpmPath() + "/daemon.pid")
if err != nil {
log.Fatal(err)
}
// create new file
file, err := os.Create(GetGpmPath() + "/daemon.pid")
if err != nil {
log.Fatal(err)
}
defer file.Close()
}
// save pid to file
file, err := os.OpenFile(GetGpmPath()+"/daemon.pid", os.O_APPEND|os.O_WRONLY, 0600)
if err != nil {
log.Fatal(err)
}
defer file.Close()
_, err = fmt.Fprintln(file, pid)
if err != nil {
log.Fatal(err)
}
}
func DeleteDaemonPid() {
// check if pid file exists
if _, err := os.Stat(GetGpmPath() + "/daemon.pid"); os.IsNotExist(err) {
log.Fatal("Daemon does not exist")
}
// delete pid file
err := os.Remove(GetGpmPath() + "/daemon.pid")
if err != nil {
log.Fatal(err)
}
}