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.
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package conf
import (
"encoding/json"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
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"runtime"
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"strings"
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"time"
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"github.com/b3log/wide/event"
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_ "github.com/b3log/wide/i18n"
"github.com/b3log/wide/util"
"github.com/golang/glog"
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)
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type User struct {
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Name string
Password string
Workspace string // 指定了该用户的 GOPATH 路径
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}
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type conf struct {
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Server string
StaticServer string
EditorChannel string
OutputChannel string
ShellChannel string
StaticResourceVersion string
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MaxProcs int
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RuntimeMode string
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Pwd string
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Users []User
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}
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var Wide conf
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var rawWide conf
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// 定时检查 Wide 运行环境.
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// 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.
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func CheckEnv() {
go func() {
for {
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 {
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event.EventQueue <- event.EvtCodeGocodeNotFound
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glog.Warningf("Not found gocode [%s]", gocode)
}
ide_stub := Wide.GetIDEStub()
cmd = exec.Command(ide_stub, "version")
_, err = cmd.Output()
if nil != err {
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event.EventQueue <- event.EvtCodeIDEStubNotFound
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glog.Warningf("Not found ide_stub [%s]", ide_stub)
}
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// TODO: 7 分钟进行一次检查环境
time.Sleep(time.Second * 10)
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}
}()
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}
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// 获取 username 指定的用户的工作空间路径.
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func (*conf) GetUserWorkspace(username string) string {
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for _, user := range Wide.Users {
if user.Name == username {
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ret := strings.Replace(user.Workspace, "{pwd}", Wide.Pwd, 1)
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return filepath.FromSlash(ret)
}
}
return ""
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}
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// 获取 gocode 路径.
func (*conf) GetGocode() string {
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return getGOBIN() + "gocode"
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}
// 获取 ide_stub 路径.
func (*conf) GetIDEStub() string {
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return getGOBIN() + "ide_stub"
}
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// 获取 GOBIN 路径,末尾带路径分隔符.
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func getGOBIN() string {
ret := os.Getenv("GOBIN")
if "" != ret {
return ret + string(os.PathSeparator)
}
ret = os.Getenv("GOPATH") + string(os.PathSeparator) + "bin" + string(os.PathSeparator) +
os.Getenv("GOOS") + "_" + os.Getenv("GOARCH")
if isExist(ret) {
return ret + string(os.PathSeparator)
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}
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ret = os.Getenv("GOPATH") + string(os.PathSeparator) + "bin" + string(os.PathSeparator) +
runtime.GOOS + "_" + runtime.GOARCH
if isExist(ret) {
return ret + string(os.PathSeparator)
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}
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return os.Getenv("GOPATH") + string(os.PathSeparator) + "bin" + string(os.PathSeparator)
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}
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// 保存 Wide 配置.
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func Save() bool {
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// 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
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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
}
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// 加载 Wide 配置.
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func Load() {
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bytes, _ := ioutil.ReadFile("conf/wide.json")
err := json.Unmarshal(bytes, &Wide)
if err != nil {
glog.Error(err)
os.Exit(-1)
}
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// 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)
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ip, err := util.Net.LocalIP()
if err != nil {
glog.Error(err)
os.Exit(-1)
}
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glog.V(3).Infof("IP [%s]", ip)
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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)
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// 获取当前执行路径
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file, _ := exec.LookPath(os.Args[0])
pwd, _ := filepath.Abs(file)
pwd = pwd[:strings.LastIndex(pwd, string(os.PathSeparator))]
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Wide.Pwd = pwd
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glog.V(3).Infof("pwd [%s]", pwd)
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glog.V(3).Info("Conf: \n" + string(bytes))
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}
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// 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)
}