wide/conf/wide.go

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// Wide 配置相关,所有配置(包括用户配置)都是保存在 wide.json 中.
package conf
import (
"encoding/json"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"github.com/b3log/wide/event"
_ "github.com/b3log/wide/i18n"
"github.com/b3log/wide/util"
"github.com/golang/glog"
)
type User struct {
Name string
Password string
Workspace string // 指定了该用户的 GOPATH 路径
}
type conf struct {
Server string
StaticServer string
EditorChannel string
OutputChannel string
ShellChannel string
StaticResourceVersion string
MaxProcs int
RuntimeMode string
Pwd string
Users []User
}
var Wide conf
var rawWide conf
// 检查 Wide 运行环境.
// 如果是特别严重的问题(比如 $GOPATH 不存在)则退出进程。另一些不太严重的问题(比如 gocode 不存在)则放入全局通知队列。
func (*conf) CheckEnv() {
if "" == os.Getenv("GOPATH") {
glog.Fatal("Not found $GOPATH")
os.Exit(-1)
}
if "" == os.Getenv("GOROOT") {
glog.Fatal("Not found $GOROOT")
os.Exit(-1)
}
gocode := Wide.GetGocode()
cmd := exec.Command(gocode, "close")
_, err := cmd.Output()
if nil != err {
event.EventQueue <- event.EvtGocodeNotFount
glog.Warningf("Not found gocode [%s]", gocode)
}
ide_stub := Wide.GetIDEStub()
cmd = exec.Command(ide_stub, "version")
_, err = cmd.Output()
if nil != err {
event.EventQueue <- event.EvtIDEStubNotFound
glog.Warningf("Not found ide_stub [%s]", ide_stub)
}
}
// 获取 username 指定的用户的工作空间路径.
func (*conf) GetUserWorkspace(username string) string {
for _, user := range Wide.Users {
if user.Name == username {
ret := strings.Replace(user.Workspace, "{Pwd}", Wide.Pwd, 1)
return filepath.FromSlash(ret)
}
}
return ""
}
// 获取 gocode 路径.
func (*conf) GetGocode() string {
binDir := os.Getenv("GOBIN")
if "" != binDir {
return binDir + string(os.PathSeparator) + "gocode"
}
binDir = os.Getenv("GOPATH") + string(os.PathSeparator) + "bin" + string(os.PathSeparator) +
runtime.GOOS + "_" + os.Getenv("GOARCH")
if isExist(binDir) {
return binDir + string(os.PathSeparator) + "gocode"
} else {
return os.Getenv("GOPATH") + string(os.PathSeparator) + "bin" + string(os.PathSeparator) +
"gocode"
}
}
// 获取 ide_stub 路径.
func (*conf) GetIDEStub() string {
binDir := os.Getenv("GOBIN")
if "" != binDir {
return binDir + string(os.PathSeparator) + "ide_stub"
}
binDir = os.Getenv("GOPATH") + string(os.PathSeparator) + "bin" + string(os.PathSeparator) +
runtime.GOOS + "_" + os.Getenv("GOARCH")
if isExist(binDir) {
return binDir + string(os.PathSeparator) + "ide_stub"
} else {
return os.Getenv("GOPATH") + string(os.PathSeparator) + "bin" + string(os.PathSeparator) +
"ide_stub"
}
}
// 保存 Wide 配置.
func Save() bool {
// 只有 Users 是可以通过界面修改的,其他属性只能手工维护 wide.json 配置文件
rawWide.Users = Wide.Users
// 原始配置文件内容
bytes, err := json.MarshalIndent(rawWide, "", " ")
if nil != err {
glog.Error(err)
return false
}
if err = ioutil.WriteFile("conf/wide.json", bytes, 0644); nil != err {
glog.Error(err)
return false
}
return true
}
// 加载 Wide 配置.
func Load() {
// 检查 Wide 运行环境
Wide.CheckEnv()
bytes, _ := ioutil.ReadFile("conf/wide.json")
err := json.Unmarshal(bytes, &Wide)
if err != nil {
glog.Error(err)
os.Exit(-1)
}
// 保存未经变量替换处理的原始配置文件,用于写回时
json.Unmarshal(bytes, &rawWide)
ip, err := util.Net.LocalIP()
if err != nil {
glog.Error(err)
os.Exit(-1)
}
glog.V(3).Infof("IP [%s]", ip)
Wide.Server = strings.Replace(Wide.Server, "{IP}", ip, 1)
Wide.StaticServer = strings.Replace(Wide.StaticServer, "{IP}", ip, 1)
Wide.EditorChannel = strings.Replace(Wide.EditorChannel, "{IP}", ip, 1)
Wide.OutputChannel = strings.Replace(Wide.OutputChannel, "{IP}", ip, 1)
Wide.ShellChannel = strings.Replace(Wide.ShellChannel, "{IP}", ip, 1)
// 获取当前执行路径
file, _ := exec.LookPath(os.Args[0])
pwd, _ := filepath.Abs(file)
pwd = pwd[:strings.LastIndex(pwd, string(os.PathSeparator))]
Wide.Pwd = pwd
glog.V(3).Infof("pwd [%s]", pwd)
glog.V(3).Info("Conf: \n" + string(bytes))
}
// 检查文件或目录是否存在.
// 如果由 filename 指定的文件或目录存在则返回 true否则返回 false.
func isExist(filename string) bool {
_, err := os.Stat(filename)
return err == nil || os.IsExist(err)
}