wide/conf/wide.go

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// Configurations manipulations, all configurations (including user configurations) are stored in wide.json.
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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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"text/template"
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"time"
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"github.com/b3log/wide/event"
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"github.com/b3log/wide/util"
"github.com/golang/glog"
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)
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const (
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PathSeparator = string(os.PathSeparator) // OS-specific path separator
PathListSeparator = string(os.PathListSeparator) // OS-specific path list separator
)
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const (
WideVersion = "1.0.1" // wide version
CodeMirrorVer = "4.7" // editor version
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)
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// The latest session content.
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type LatestSessionContent struct {
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FileTree []string // paths of expanding nodes of file tree
Files []string // paths of files of opening editor tabs
CurrentFile string // path of file of the current focused editor tab
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}
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// User configuration.
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type User struct {
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Name string
Password string
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Workspace string // the GOPATH of this user
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Locale string
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GoFormat string
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FontFamily string
FontSize string
Editor *Editor
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LatestSessionContent *LatestSessionContent
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}
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// Editor configuration of a user.
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type Editor struct {
FontFamily string
FontSize string
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}
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// Configuration.
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type conf struct {
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IP string // server ip, ${ip}
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Server string // server host and port ({IP}:7070)
StaticServer string // static resources server scheme, host and port (http://{IP}:7070)
EditorChannel string // editor channel (ws://{IP}:7070)
OutputChannel string // output channel (ws://{IP}:7070)
ShellChannel string // shell channel(ws://{IP}:7070)
SessionChannel string // wide session channel (ws://{IP}:7070)
HTTPSessionMaxAge int // HTTP session max age (in seciond)
StaticResourceVersion string // version of static resources
MaxProcs int // Go max procs
RuntimeMode string // runtime mode (dev/prod)
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WD string // current working direcitory, ${pwd}
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Workspace string // path of master workspace
Locale string // default locale
Users []*User // configurations of users
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}
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// Configuration variable.
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var Wide conf
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// A raw copy of configuration variable.
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//
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// Save function will use this variable to persist.
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var rawWide conf
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// FixedTimeCheckEnv checks Wide runtime enviorment periodically (7 minutes).
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//
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// Exits process if found fatal issues (such as not found $GOPATH),
// Notifies user by notification queue if found warning issues (such as not found gocode).
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func FixedTimeCheckEnv() {
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checkEnv() // check immediately
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go func() {
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for _ = range time.Tick(time.Minute * 7) {
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checkEnv()
}
}()
}
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func checkEnv() {
if "" == os.Getenv("GOPATH") {
glog.Fatal("Not found $GOPATH, please configure it before running Wide")
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os.Exit(-1)
}
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if "" == os.Getenv("GOROOT") {
glog.Fatal("Not found $GOROOT, please configure it before running Wide")
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os.Exit(-1)
}
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gocode := Wide.GetExecutableInGOBIN("gocode")
cmd := exec.Command(gocode, "close")
_, err := cmd.Output()
if nil != err {
event.EventQueue <- &event.Event{Code: event.EvtCodeGocodeNotFound}
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glog.Warningf("Not found gocode [%s]", gocode)
}
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ide_stub := Wide.GetExecutableInGOBIN("ide_stub")
cmd = exec.Command(ide_stub, "version")
_, err = cmd.Output()
if nil != err {
event.EventQueue <- &event.Event{Code: event.EvtCodeIDEStubNotFound}
glog.Warningf("Not found ide_stub [%s]", ide_stub)
}
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}
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// FixedTimeSave saves configurations (wide.json) periodically (1 minute).
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//
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// Main goal of this function is to save user session content, for restoring session content while user open Wide next time.
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func FixedTimeSave() {
go func() {
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for _ = range time.Tick(time.Minute) {
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Save()
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}
}()
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}
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// GetUserWorkspace gets workspace path with the specified username, returns "" if not found.
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func (c *conf) GetUserWorkspace(username string) string {
for _, user := range c.Users {
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if user.Name == username {
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ret := strings.Replace(user.Workspace, "{WD}", c.WD, 1)
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return filepath.FromSlash(ret)
}
}
return ""
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}
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// GetWorkspace gets the master workspace path.
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//
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// Compared to the use of Wide.Workspace, this function will be processed as follows:
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// 1. Replace {WD} variable with the actual directory path
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// 2. Replace "/" with "\\" (Windows)
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func (c *conf) GetWorkspace() string {
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return filepath.FromSlash(strings.Replace(c.Workspace, "{WD}", c.WD, 1))
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}
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// GetGoFmt gets the path of Go format tool, returns "gofmt" if not found.
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func (c *conf) GetGoFmt(username string) string {
for _, user := range c.Users {
if user.Name == username {
switch user.GoFormat {
case "gofmt":
return "gofmt"
case "goimports":
return c.GetExecutableInGOBIN("goimports")
default:
glog.Errorf("Unsupported Go Format tool [%s]", user.GoFormat)
return "gofmt"
}
}
}
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return "gofmt"
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}
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// GetWorkspace gets workspace path of the user.
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//
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// Compared to the use of Wide.Workspace, this function will be processed as follows:
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// 1. Replace {WD} variable with the actual directory path
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// 2. Replace "/" with "\\" (Windows)
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func (u *User) GetWorkspace() string {
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return filepath.FromSlash(strings.Replace(u.Workspace, "{WD}", Wide.WD, 1))
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}
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// GetUser gets configuration of the user specified by the given username, returns nil if not found.
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func (*conf) GetUser(username string) *User {
for _, user := range Wide.Users {
if user.Name == username {
return user
}
}
return nil
}
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// GetExecutableInGOBIN gets executable file under GOBIN path.
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//
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// The specified executable should not with extension, this function will append .exe if on Windows.
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func (*conf) GetExecutableInGOBIN(executable string) string {
if util.OS.IsWindows() {
executable += ".exe"
}
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gopaths := filepath.SplitList(os.Getenv("GOPATH"))
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for _, gopath := range gopaths {
// $GOPATH/bin/$GOOS_$GOARCH/executable
ret := gopath + PathSeparator + "bin" + PathSeparator +
os.Getenv("GOOS") + "_" + os.Getenv("GOARCH") + PathSeparator + executable
if isExist(ret) {
return ret
}
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// $GOPATH/bin/{runtime.GOOS}_{runtime.GOARCH}/executable
ret = gopath + PathSeparator + "bin" + PathSeparator +
runtime.GOOS + "_" + runtime.GOARCH + PathSeparator + executable
if isExist(ret) {
return ret
}
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// $GOPATH/bin/executable
ret = gopath + PathSeparator + "bin" + PathSeparator + executable
if isExist(ret) {
return ret
}
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}
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// $GOBIN/executable
return os.Getenv("GOBIN") + PathSeparator + executable
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}
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// Save saves Wide configurations.
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func Save() bool {
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// just the Users field are volatile
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rawWide.Users = Wide.Users
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// format
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bytes, err := json.MarshalIndent(rawWide, "", " ")
if nil != err {
glog.Error(err)
return false
}
if err = ioutil.WriteFile("conf/wide.json", bytes, 0644); nil != err {
glog.Error(err)
return false
}
return true
}
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// Load loads the configurations from wide.json.
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func Load() {
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bytes, _ := ioutil.ReadFile("conf/wide.json")
err := json.Unmarshal(bytes, &Wide)
if err != nil {
glog.Error(err)
os.Exit(-1)
}
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// keep the raw content
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json.Unmarshal(bytes, &rawWide)
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ip, err := util.Net.LocalIP()
if err != nil {
glog.Error(err)
os.Exit(-1)
}
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glog.V(5).Infof("${ip} [%s]", ip)
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Wide.WD = util.OS.Pwd()
glog.V(5).Infof("${pwd} [%s]", Wide.WD)
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Wide.IP = strings.Replace(Wide.IP, "${ip}", ip, 1)
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Wide.Server = strings.Replace(Wide.Server, "{IP}", Wide.IP, 1)
Wide.StaticServer = strings.Replace(Wide.StaticServer, "{IP}", Wide.IP, 1)
Wide.EditorChannel = strings.Replace(Wide.EditorChannel, "{IP}", Wide.IP, 1)
Wide.OutputChannel = strings.Replace(Wide.OutputChannel, "{IP}", Wide.IP, 1)
Wide.ShellChannel = strings.Replace(Wide.ShellChannel, "{IP}", Wide.IP, 1)
Wide.SessionChannel = strings.Replace(Wide.SessionChannel, "{IP}", Wide.IP, 1)
glog.V(5).Info("Conf: \n" + string(bytes))
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initWorkspaceDirs()
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initCustomizedConfs()
}
// initCustomizedConfs initializes the user customized configurations.
func initCustomizedConfs() {
for _, user := range Wide.Users {
UpdateCustomizedConf(user.Name)
}
}
// UpdateCustomizedConf creates (if not exists) or updates user customized configuration files.
//
// 1. /static/user/{username}/style.css
func UpdateCustomizedConf(username string) {
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var u *User = nil
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for _, user := range Wide.Users { // maybe it is a beauty of the trade-off of the another world between design and implementation
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if user.Name == username {
u = user
}
}
if nil == u {
return
}
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model := map[string]interface{}{"user": u}
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t, err := template.ParseFiles("static/user/style.css.tmpl")
if nil != err {
glog.Error(err)
os.Exit(-1)
}
wd := util.OS.Pwd()
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dir := filepath.Clean(wd + "/static/user/" + u.Name)
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if err := os.MkdirAll(dir, 0664); nil != err {
glog.Error(err)
os.Exit(-1)
}
fout, err := os.Create(dir + PathSeparator + "style.css")
if nil != err {
glog.Error(err)
os.Exit(-1)
}
defer fout.Close()
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if err := t.Execute(fout, model); nil != err {
glog.Error(err)
os.Exit(-1)
}
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}
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// initWorkspaceDirs initializes the directories of master workspace, users' workspaces.
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//
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// Creates directories if not found on path of workspace.
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func initWorkspaceDirs() {
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paths := filepath.SplitList(Wide.GetWorkspace())
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for _, user := range Wide.Users {
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paths = append(paths, filepath.SplitList(user.GetWorkspace())...)
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}
for _, path := range paths {
CreateWorkspaceDir(path)
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}
}
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// CreateWorkspaceDir creates (if not exists) directories on the path.
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//
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// 1. root directory:{path}
// 2. src directory: {path}/src
// 3. package directory: {path}/pkg
// 4. binary directory: {path}/bin
func CreateWorkspaceDir(path string) {
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createDir(path)
createDir(path + PathSeparator + "src")
createDir(path + PathSeparator + "pkg")
createDir(path + PathSeparator + "bin")
}
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// createDir creates a directory on the path if it not exists.
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func createDir(path string) {
if !isExist(path) {
if err := os.MkdirAll(path, 0775); nil != err {
glog.Error(err)
os.Exit(-1)
}
glog.V(7).Infof("Created a directory [%s]", path)
}
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}
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// isExist determines whether the file spcified by the given filename is exists.
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func isExist(filename string) bool {
_, err := os.Stat(filename)
return err == nil || os.IsExist(err)
}