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watch.go
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watch.go
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package task
import (
"fmt"
"io/ioutil"
"path"
"strconv"
"strings"
"time"
c "github.com/iKurum/ikufile/config"
"github.com/iKurum/ikufile/utils/check"
notify "github.com/iKurum/ikufile/utils/fs"
logs "github.com/iKurum/ikufile/utils/log"
"github.com/fsnotify/fsnotify"
)
func InitWatch() {
var err error
if Watcher.Watcher != nil {
_ = Watcher.Watcher.Close()
}
Watcher, err = notify.New(1 * time.Second)
if err != nil {
logs.Exit(err)
}
TaskMan = NewTaskMan(c.Cfg.Command.DelayMillSecond, c.Cfg.Notifier.CallUrl)
addWatcher()
go func() {
for {
select {
case evs := <-Watcher.Events:
// 清屏
if check.KeyInInstruction(c.InstClearWhenExec) {
fmt.Println("\033[H\033[2J")
}
// directory structure changes, dynamically add, delete and monitor according to rules
// TODO // this method cannot be triggered when the parent folder of the change folder is not monitored
go watchChangeHandler(evs)
eventDispatcher(evs)
case err, ok := <-Watcher.Errors:
if !ok {
return
}
logs.Error(err)
}
}
}()
}
// 拼接 exec
func cmdParse2Array(s string, cf *ChangedFile) []string {
a := strings.Split(s, " ")
r := make([]string, 0)
for i := 0; i < len(a); i++ {
if ss := strings.Trim(a[i], " "); ss != "" {
r = append(r, strParseRealStr(ss, cf))
}
}
return r
}
// 替换exec 规则
func strParseRealStr(s string, cf *ChangedFile) string {
return strings.ReplaceAll(
strings.ReplaceAll(
strings.ReplaceAll(
strings.ReplaceAll(s, "{{file}}", cf.Name),
"{{ext}}", cf.Ext,
),
"{{changed}}", strconv.FormatInt(cf.Changed, 10),
),
"{{event}}", cf.Event,
)
}
// 持续文件监听
func watchChangeHandler(events []fsnotify.Event) {
for _, event := range events {
// stop the ikufile daemon process when the .ikufile.pid file is changed
if event.Name == c.GetPidFile() &&
(event.Op == fsnotify.Remove ||
event.Op == fsnotify.Write ||
event.Op == fsnotify.Rename) {
logs.UInfo("exit daemon process")
c.StopSelf()
return
}
if event.Op != fsnotify.Create && event.Op != fsnotify.Rename {
return
}
_, err := ioutil.ReadDir(event.Name)
if err != nil {
return
}
do := false
for rec := range c.Cfg.Monitor.IncludeDirsRec {
if !strings.HasPrefix(event.Name, rec) {
continue
}
// check exceptDirs
if hitDirs(event.Name, &c.Cfg.Monitor.ExceptDirs) {
continue
}
// 新增未监听的文件/已监听的文件重命名
_ = Watcher.Remove(event.Name)
err := Watcher.Add(event.Name)
if err == nil {
do = true
logs.Info("watcher add -> ", event.Name)
} else {
logs.Warning("watcher add faild:", event.Name, err)
}
}
if do {
// 新增未监听的文件/已监听的文件重命名
// 直接返回
return
}
// check map
if _, ok := c.Cfg.Monitor.DirsMap[event.Name]; ok {
_ = Watcher.Remove(event.Name)
err := Watcher.Add(event.Name)
if err == nil {
logs.Info("watcher add -> ", event.Name)
} else {
logs.Warning("watcher add faild:", event.Name, err)
}
}
}
}
// 文件状态更新
func eventDispatcher(events []fsnotify.Event) {
for _, event := range events {
if event.Name == c.GetPidFile() {
// daemon pid 文件改动
return
}
// 判断文件后缀
ext := path.Ext(event.Name)
if len(c.Cfg.Monitor.Types) > 0 &&
!check.KeyInMonitorTypesMap(".*", c.Cfg) &&
!check.KeyInMonitorTypesMap(ext, c.Cfg) {
return
}
// 判断是否监听该事件
op := c.IoeventMapStr[event.Op]
if len(c.Cfg.Monitor.Events) != 0 && !inStrArray(op, c.Cfg.Monitor.Events) {
return
}
logs.UInfo("EVENT ", event.Op.String(), ":", event.Name)
TaskMan.Put(&ChangedFile{
Name: relativePath(c.ProjectFolder, event.Name),
Changed: time.Now().UnixNano(),
Ext: ext,
Event: op,
})
}
}
// 文件监听 初始
func addWatcher() {
logs.UInfo("collecting directory information...")
dirsMap := map[string]bool{}
for _, dir := range c.Cfg.Monitor.ExceptDirs {
if dir == "." {
logs.Exit("exceptDirs must is not project root path ! err path:", dir)
}
}
for _, dir := range c.Cfg.Monitor.IncludeDirs {
darr := dirParse2Array(dir)
if len(darr) < 1 || len(darr) > 2 {
logs.Exit("filegirl section monitor dirs is error. ", dir)
}
if strings.HasPrefix(darr[0], "/") {
logs.Exit("dirs must be relative paths ! err path:", dir)
}
if darr[0] == "." {
if len(darr) == 2 && darr[1] == "*" {
// The highest priority
dirsMap = map[string]bool{
c.ProjectFolder: true,
}
listFile(c.ProjectFolder, func(d string) {
dirsMap[d] = true
})
c.Cfg.Monitor.IncludeDirsRec[c.ProjectFolder] = true
break
} else {
dirsMap[c.ProjectFolder] = true
}
} else {
md := c.ProjectFolder + "/" + darr[0]
dirsMap[md] = true
if len(darr) == 2 && darr[1] == "*" {
listFile(md, func(d string) {
dirsMap[d] = true
})
c.Cfg.Monitor.IncludeDirsRec[md] = true
}
}
}
for dir := range dirsMap {
logs.Info("watcher add -> ", dir)
err := Watcher.Add(dir)
if err != nil {
logs.Exit(err)
}
}
logs.Info("total monitored dirs: " + strconv.Itoa(len(dirsMap)))
logs.UInfo("ikufile is ready.")
c.Cfg.Monitor.DirsMap = dirsMap
if check.KeyInInstruction(c.InstExecWhenStart) {
logs.UInfo("InstExecWhenStart")
TaskMan.Run(new(ChangedFile))
}
}
// 排除不监听文件/夹
func hitDirs(d string, dirs *[]string) bool {
d += "/"
for _, v := range *dirs {
if strings.HasPrefix(d, c.ProjectFolder+"/"+v+"/") {
return true
}
}
return false
}
// 当前变更是否在监听事件内
func inStrArray(s string, arr []string) bool {
for _, v := range arr {
if s == v {
return true
}
}
return false
}
// 返回文件完整路径(替换反斜杠)
func relativePath(folder, p string) string {
s := strings.ReplaceAll(strings.TrimPrefix(p, folder), "\\", "/")
if strings.HasPrefix(s, "/") && len(s) > 1 {
s = s[1:]
}
return s
}
// 递归判断文件是否需要监听
func listFile(folder string, fun func(string)) {
files, _ := ioutil.ReadDir(folder)
for _, file := range files {
if file.IsDir() {
d := folder + "/" + file.Name()
if hitDirs(d, &c.Cfg.Monitor.ExceptDirs) {
continue
}
fun(d)
listFile(d, fun)
}
}
}
// 返回监听文件的数组
func dirParse2Array(s string) []string {
a := strings.Split(s, ",")
r := make([]string, 0)
for i := 0; i < len(a); i++ {
if ss := strings.Trim(a[i], " "); ss != "" {
r = append(r, ss)
}
}
return r
}