wide/output/install.go

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// Copyright (c) 2014-2019, b3log.org & hacpai.com
//
// 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
//
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// https://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 output
import (
"bufio"
"encoding/json"
"io"
"io/ioutil"
"math/rand"
"net/http"
"os/exec"
"path/filepath"
"strconv"
"strings"
"github.com/b3log/wide/conf"
"github.com/b3log/wide/i18n"
"github.com/b3log/wide/session"
"github.com/b3log/wide/util"
)
// GoInstallHandler handles request of go install.
func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
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result := util.NewResult()
defer util.RetResult(w, r, result)
httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
locale := conf.GetUser(username).Locale
var args map[string]interface{}
if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
logger.Error(err)
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result.Succ = false
return
}
sid := args["sid"].(string)
filePath := args["file"].(string)
curDir := filepath.Dir(filePath)
cmd := exec.Command("go", "install")
cmd.Dir = curDir
setCmdEnv(cmd, username)
logger.Debugf("go install %s", curDir)
stdout, err := cmd.StdoutPipe()
if nil != err {
logger.Error(err)
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result.Succ = false
return
}
stderr, err := cmd.StderrPipe()
if nil != err {
logger.Error(err)
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result.Succ = false
return
}
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if !result.Succ {
return
}
channelRet := map[string]interface{}{}
if nil != session.OutputWS[sid] {
// display "START [go install]" in front-end browser
channelRet["output"] = "<span class='start-install'>" + i18n.Get(locale, "start-install").(string) + "</span>\n"
channelRet["cmd"] = "start-install"
wsChannel := session.OutputWS[sid]
err := wsChannel.WriteJSON(&channelRet)
if nil != err {
logger.Error(err)
return
}
wsChannel.Refresh()
}
reader := bufio.NewReader(io.MultiReader(stdout, stderr))
if err := cmd.Start(); nil != err {
logger.Error(err)
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result.Succ = false
return
}
go func(runningId int) {
defer util.Recover()
defer cmd.Wait()
logger.Debugf("User [%s, %s] is running [go install] [id=%d, dir=%s]", username, sid, runningId, curDir)
// read all
buf, _ := ioutil.ReadAll(reader)
channelRet := map[string]interface{}{}
channelRet["cmd"] = "go install"
if 0 != len(buf) { // build error
// build gutter lint
errOut := string(buf)
lines := strings.Split(errOut, "\n")
if lines[0][0] == '#' {
lines = lines[1:] // skip the first line
}
lints := []*Lint{}
for _, line := range lines {
if len(line) < 1 {
continue
}
if line[0] == '\t' {
// append to the last lint
last := len(lints)
msg := lints[last-1].Msg
msg += line
lints[last-1].Msg = msg
continue
}
file := line[:strings.Index(line, ":")]
left := line[strings.Index(line, ":")+1:]
index := strings.Index(left, ":")
lineNo := 0
msg := left
if index >= 0 {
lineNo, _ = strconv.Atoi(left[:index])
msg = left[index+2:]
}
lint := &Lint{
File: file,
LineNo: lineNo - 1,
Severity: lintSeverityError,
Msg: msg,
}
lints = append(lints, lint)
}
channelRet["lints"] = lints
channelRet["output"] = "<span class='install-error'>" + i18n.Get(locale, "install-error").(string) + "</span>\n" + errOut
} else {
channelRet["output"] = "<span class='install-succ'>" + i18n.Get(locale, "install-succ").(string) + "</span>\n"
}
if nil != session.OutputWS[sid] {
logger.Debugf("User [%s, %s] 's running [go install] [id=%d, dir=%s] has done", username, sid, runningId, curDir)
wsChannel := session.OutputWS[sid]
err := wsChannel.WriteJSON(&channelRet)
if nil != err {
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logger.Warn(err)
}
wsChannel.Refresh()
}
}(rand.Int())
}