/
git_cmd.go
240 lines (211 loc) · 6.19 KB
/
git_cmd.go
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// Copyright (c) 2021 Terminus, Inc.
//
// 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 helper
import (
"bytes"
"compress/gzip"
"fmt"
"io"
"net/http"
"os"
"os/exec"
"os/signal"
"path/filepath"
"regexp"
"strconv"
"strings"
"syscall"
"github.com/sirupsen/logrus"
"github.com/erda-project/erda/modules/gittar/models"
"github.com/erda-project/erda/modules/gittar/pkg/gitmodule"
"github.com/erda-project/erda/modules/gittar/webcontext"
)
func recycleChildProcess() {
//是init进程
if os.Getpid() == 1 {
sc := make(chan os.Signal)
signal.Notify(sc, syscall.SIGCHLD)
//回收被kill的进程的子进程
go func() {
var status syscall.WaitStatus
for range sc {
wpid, err := syscall.Wait4(-1, &status, syscall.WNOHANG, nil)
if err == nil {
logrus.Infof("wait child process success %s", strconv.Itoa(wpid))
}
}
}()
}
}
func gitCommand(version string, args ...string) *exec.Cmd {
command := exec.Command("git", args...)
if len(version) > 0 {
command.Env = append(os.Environ(), fmt.Sprintf("GIT_PROTOCOL=%s", version))
}
return command
}
// Run Command extend
func runCommand2(w io.Writer, cmd *exec.Cmd, readers ...io.Reader) {
stdin, err := cmd.StdinPipe()
if err != nil {
logrus.Printf("[ERROR] get command stdin error %v", err)
return
}
stdout, err := cmd.StdoutPipe()
if err != nil {
logrus.Printf("[ERROR] get command stdout error %v", err)
return
}
if err := cmd.Start(); err != nil {
logrus.Printf("[ERROR] command start error %v", err)
return
}
logrus.Infof("command %v processId:%s", cmd.Args, strconv.Itoa(cmd.Process.Pid))
for _, v := range readers {
_, err := io.Copy(stdin, v)
if err != nil {
logrus.Infof("[ERROR] stdin read error %v", err)
logrus.Infof("kill process %s", strconv.Itoa(cmd.Process.Pid))
cmd.Process.Kill()
cmd.Wait()
return
}
}
stdin.Close()
_, err = io.Copy(w, stdout)
if err != nil {
logrus.Infof("[ERROR] stdout write error %v", err)
logrus.Infof("kill process %s", strconv.Itoa(cmd.Process.Pid))
cmd.Process.Kill()
cmd.Wait()
return
}
err = cmd.Wait()
if err != nil {
logrus.Printf("[ERROR] command exec error %v", err)
}
}
// RunAdvertisement command
func RunAdvertisement(service string, c *webcontext.Context) {
version := c.MustGet("gitProtocol").(string)
headerNoCache(c)
c.Header("Content-type", fmt.Sprintf("application/x-git-%s-advertisement", service))
c.Status(http.StatusOK)
if len(version) == 0 {
c.GetWriter().Write(packetWrite("# service=git-" + service + "\n"))
c.GetWriter().Write(packetFlush())
}
runCommand2(c.GetWriter(), gitCommand(
version,
service,
"--stateless-rpc",
"--advertise-refs",
c.Repository.DiskPath(),
), c.GetRequestBody())
}
// RunProcess command
func RunProcess(service string, c *webcontext.Context) {
version := c.MustGet("gitProtocol").(string)
c.Header("Content-Type", fmt.Sprintf("application/x-git-%s-result", service))
headerNoCache(c)
var (
reqBody = c.GetRequestBody()
err error
)
// Handle GZIP
if c.GetHeader("Content-Encoding") == "gzip" {
reqBody, err = gzip.NewReader(reqBody)
if err != nil {
logrus.Errorf("HTTP.Get: fail to create gzip reader: %v", err)
c.AbortWithStatus(http.StatusInternalServerError)
return
}
}
defer reqBody.Close()
// Grab pushEvent
var pushEvents []*models.PayloadPushEvent
if service == "receive-pack" {
header, err := ReadGitSendPackHeader(reqBody)
if err != nil {
logrus.Errorf("receive-pack error %v", err)
c.AbortWithStatus(500)
return
}
logrus.Infof("push header:" + string(header))
re := regexp.MustCompile(
`(?mi)(?P<before>[0-9a-fA-F]{40}) (?P<after>[0-9a-fA-F]{40}) (?P<ref>refs\/(heads|tags)\/.*?)\0`,
)
for _, matches := range re.FindAllSubmatch(header, -1) {
pushEvent := &models.PayloadPushEvent{
Before: string(matches[1]),
After: string(matches[2]),
Ref: string(bytes.Trim(matches[3], "\x00")),
IsTag: string(matches[4]) == "tags",
Pusher: c.MustGet("user").(*models.User),
TotalCommitsCount: 0,
}
pushEvent.IsDelete = pushEvent.After == gitmodule.INIT_COMMIT_ID
pushEvents = append(pushEvents, pushEvent)
}
repository := c.MustGet("repository").(*gitmodule.Repository)
if preReceiveHook(pushEvents, c) {
runCommand2(c.GetWriter(), gitCommand(
version,
service,
"--stateless-rpc",
repository.DiskPath(),
), bytes.NewReader(header), reqBody)
go PostReceiveHook(pushEvents, c)
}
} else {
runCommand2(c.GetWriter(), gitCommand(
version,
service,
"--stateless-rpc",
c.MustGet("repository").(*gitmodule.Repository).DiskPath(),
), reqBody)
}
}
func RunArchive(c *webcontext.Context, ref string, format string) {
c.EchoContext.Response().Header().Add("Content-Disposition", "attachment; filename="+
strings.Replace(ref, "/", "-", -1)+"."+format)
fullPath, _ := filepath.Abs(c.MustGet("repository").(*gitmodule.Repository).DiskPath())
runCommand2(c.GetWriter(), gitCommand(
"",
"archive",
"--format="+format,
ref,
"--remote=file:///"+fullPath))
}
// OutPutArchive 创建打包文件
func OutPutArchive(c *webcontext.Context, ref string, format string) string {
fullPath, _ := filepath.Abs(c.MustGet("repository").(*gitmodule.Repository).DiskPath())
filename := fullPath + "/" + strings.Replace(ref, "/", "-", -1) + "." + format
runCommand2(c.GetWriter(), gitCommand(
"",
"archive",
"--format="+format,
ref,
"--remote=file:///"+fullPath,
"--output="+filename))
return filename
}
// OutPutArchiveDelete 删除打包文件 (文件打包上传完必须删除)
func OutPutArchiveDelete(c *webcontext.Context, path string) {
runCommand2(c.GetWriter(), exec.Command(
"rm",
"-r",
"-f",
path))
}