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// Copyright 2013 bee authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package main
import (
"fmt"
"os"
"os/exec"
"runtime"
"strings"
"sync"
"time"
"github.com/howeyc/fsnotify"
)
var (
cmd *exec.Cmd
state sync.Mutex
eventTime = make(map[string]int64)
buildPeriod time.Time
)
func NewWatcher(paths []string) {
watcher, err := fsnotify.NewWatcher()
if err != nil {
ColorLog("[ERRO] Fail to create new Watcher[ %s ]\n", err)
os.Exit(2)
}
go func() {
for {
select {
case e := <-watcher.Event:
isbuild := true
// Skip TMP files for Sublime Text.
if checkTMPFile(e.Name) {
continue
}
if !chekcIfWatchExt(e.Name) {
continue
}
// Prevent duplicated builds.
if buildPeriod.Add(1 * time.Second).After(time.Now()) {
continue
}
buildPeriod = time.Now()
mt := getFileModTime(e.Name)
if t := eventTime[e.Name]; mt == t {
ColorLog("[SKIP] # %s #\n", e.String())
isbuild = false
}
eventTime[e.Name] = mt
if isbuild {
ColorLog("[EVEN] %s\n", e)
go Autobuild()
}
case err := <-watcher.Error:
ColorLog("[WARN] %s\n", err.Error()) // No need to exit here
}
}
}()
ColorLog("[INFO] Initializing watcher...\n")
for _, path := range paths {
ColorLog("[TRAC] Directory( %s )\n", path)
err = watcher.Watch(path)
if err != nil {
ColorLog("[ERRO] Fail to watch directory[ %s ]\n", err)
os.Exit(2)
}
}
}
// getFileModTime retuens unix timestamp of `os.File.ModTime` by given path.
func getFileModTime(path string) int64 {
path = strings.Replace(path, "\\", "/", -1)
f, err := os.Open(path)
if err != nil {
ColorLog("[ERRO] Fail to open file[ %s ]\n", err)
return time.Now().Unix()
}
defer f.Close()
fi, err := f.Stat()
if err != nil {
ColorLog("[ERRO] Fail to get file information[ %s ]\n", err)
return time.Now().Unix()
}
return fi.ModTime().Unix()
}
func Autobuild() {
state.Lock()
defer state.Unlock()
ColorLog("[INFO] Start building...\n")
path, _ := os.Getwd()
os.Chdir(path)
cmdName := "go"
if conf.Gopm.Enable {
cmdName = "gopm"
}
var err error
// For applications use full import path like "github.com/.../.."
// are able to use "go install" to reduce build time.
if conf.GoInstall {
icmd := exec.Command(cmdName, "install")
icmd.Stdout = os.Stdout
icmd.Stderr = os.Stderr
err = icmd.Run()
}
if err == nil {
appName := appname
if runtime.GOOS == "windows" {
appName += ".exe"
}
binPath := GetGOPATHs()[0] + "/bin/" + appName
if conf.GoInstall && isExist(binPath) {
os.Rename(binPath, appName)
ColorLog("[INFO] Build command reduced\n")
} else {
bcmd := exec.Command(cmdName, "build")
bcmd.Stdout = os.Stdout
bcmd.Stderr = os.Stderr
err = bcmd.Run()
}
}
if err != nil {
ColorLog("[ERRO] ============== Build failed ===================\n")
fmt.Print("Press 'enter' to rebuild...")
fmt.Scanln()
go Autobuild()
return
}
ColorLog("[SUCC] Build was successful\n")
Restart(appname)
}
func Kill() {
defer func() {
if e := recover(); e != nil {
fmt.Println("Kill -> ", e)
}
}()
if cmd != nil && cmd.Process != nil {
cmd.Process.Kill()
}
}
func Restart(appname string) {
Debugf("kill running process")
Kill()
go Start(appname)
}
func Start(appname string) {
ColorLog("[INFO] Restarting %s ...\n", appname)
if strings.Index(appname, "./") == -1 {
appname = "./" + appname
}
cmd = exec.Command(appname)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Args = append([]string{appname}, conf.CmdArgs...)
cmd.Env = append(os.Environ(), conf.Envs...)
go cmd.Run()
ColorLog("[INFO] %s is running...\n", appname)
started <- true
}
// checkTMPFile returns true if the event was for TMP files.
func checkTMPFile(name string) bool {
if strings.HasSuffix(strings.ToLower(name), ".tmp") {
return true
}
return false
}
var watchExts = []string{".go"}
// chekcIfWatchExt returns true if the name HasSuffix <watch_ext>.
func chekcIfWatchExt(name string) bool {
for _, s := range watchExts {
if strings.HasSuffix(name, s) {
return true
}
}
return false
}