gitea/services/mirror/mirror_push.go
zeripath 01087e9eef
Make Requests Processes and create process hierarchy. Associate OpenRepository with context. (#17125)
This PR registers requests with the process manager and manages hierarchy within the processes.

Git repos are then associated with a context, (usually the request's context) - with sub commands using this context as their base context.

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-11-30 20:06:32 +00:00

247 lines
6.4 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package mirror
import (
"context"
"errors"
"fmt"
"io"
"regexp"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/lfs"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/process"
"code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
)
var stripExitStatus = regexp.MustCompile(`exit status \d+ - `)
// AddPushMirrorRemote registers the push mirror remote.
func AddPushMirrorRemote(m *models.PushMirror, addr string) error {
addRemoteAndConfig := func(addr, path string) error {
if _, err := git.NewCommand("remote", "add", "--mirror=push", m.RemoteName, addr).RunInDir(path); err != nil {
return err
}
if _, err := git.NewCommand("config", "--add", "remote."+m.RemoteName+".push", "+refs/heads/*:refs/heads/*").RunInDir(path); err != nil {
return err
}
if _, err := git.NewCommand("config", "--add", "remote."+m.RemoteName+".push", "+refs/tags/*:refs/tags/*").RunInDir(path); err != nil {
return err
}
return nil
}
if err := addRemoteAndConfig(addr, m.Repo.RepoPath()); err != nil {
return err
}
if m.Repo.HasWiki() {
wikiRemoteURL := repository.WikiRemoteURL(addr)
if len(wikiRemoteURL) > 0 {
if err := addRemoteAndConfig(wikiRemoteURL, m.Repo.WikiPath()); err != nil {
return err
}
}
}
return nil
}
// RemovePushMirrorRemote removes the push mirror remote.
func RemovePushMirrorRemote(m *models.PushMirror) error {
cmd := git.NewCommand("remote", "rm", m.RemoteName)
if _, err := cmd.RunInDir(m.Repo.RepoPath()); err != nil {
return err
}
if m.Repo.HasWiki() {
if _, err := cmd.RunInDir(m.Repo.WikiPath()); err != nil {
// The wiki remote may not exist
log.Warn("Wiki Remote[%d] could not be removed: %v", m.ID, err)
}
}
return nil
}
// SyncPushMirror starts the sync of the push mirror and schedules the next run.
func SyncPushMirror(ctx context.Context, mirrorID int64) bool {
log.Trace("SyncPushMirror [mirror: %d]", mirrorID)
defer func() {
err := recover()
if err == nil {
return
}
// There was a panic whilst syncPushMirror...
log.Error("PANIC whilst syncPushMirror[%d] Panic: %v\nStacktrace: %s", mirrorID, err, log.Stack(2))
}()
m, err := models.GetPushMirrorByID(mirrorID)
if err != nil {
log.Error("GetPushMirrorByID [%d]: %v", mirrorID, err)
return false
}
m.LastError = ""
ctx, _, finished := process.GetManager().AddContext(ctx, fmt.Sprintf("Syncing PushMirror %s/%s to %s", m.Repo.OwnerName, m.Repo.Name, m.RemoteName))
defer finished()
log.Trace("SyncPushMirror [mirror: %d][repo: %-v]: Running Sync", m.ID, m.Repo)
err = runPushSync(ctx, m)
if err != nil {
log.Error("SyncPushMirror [mirror: %d][repo: %-v]: %v", m.ID, m.Repo, err)
m.LastError = stripExitStatus.ReplaceAllLiteralString(err.Error(), "")
}
m.LastUpdateUnix = timeutil.TimeStampNow()
if err := models.UpdatePushMirror(m); err != nil {
log.Error("UpdatePushMirror [%d]: %v", m.ID, err)
return false
}
log.Trace("SyncPushMirror [mirror: %d][repo: %-v]: Finished", m.ID, m.Repo)
return err == nil
}
func runPushSync(ctx context.Context, m *models.PushMirror) error {
timeout := time.Duration(setting.Git.Timeout.Mirror) * time.Second
performPush := func(path string) error {
remoteAddr, err := git.GetRemoteAddress(ctx, path, m.RemoteName)
if err != nil {
log.Error("GetRemoteAddress(%s) Error %v", path, err)
return errors.New("Unexpected error")
}
if setting.LFS.StartServer {
log.Trace("SyncMirrors [repo: %-v]: syncing LFS objects...", m.Repo)
gitRepo, err := git.OpenRepositoryCtx(ctx, path)
if err != nil {
log.Error("OpenRepository: %v", err)
return errors.New("Unexpected error")
}
defer gitRepo.Close()
endpoint := lfs.DetermineEndpoint(remoteAddr.String(), "")
lfsClient := lfs.NewClient(endpoint, nil)
if err := pushAllLFSObjects(ctx, gitRepo, lfsClient); err != nil {
return util.NewURLSanitizedError(err, remoteAddr, true)
}
}
log.Trace("Pushing %s mirror[%d] remote %s", path, m.ID, m.RemoteName)
if err := git.Push(ctx, path, git.PushOptions{
Remote: m.RemoteName,
Force: true,
Mirror: true,
Timeout: timeout,
}); err != nil {
log.Error("Error pushing %s mirror[%d] remote %s: %v", path, m.ID, m.RemoteName, err)
return util.NewURLSanitizedError(err, remoteAddr, true)
}
return nil
}
err := performPush(m.Repo.RepoPath())
if err != nil {
return err
}
if m.Repo.HasWiki() {
wikiPath := m.Repo.WikiPath()
_, err := git.GetRemoteAddress(ctx, wikiPath, m.RemoteName)
if err == nil {
err := performPush(wikiPath)
if err != nil {
return err
}
} else {
log.Trace("Skipping wiki: No remote configured")
}
}
return nil
}
func pushAllLFSObjects(ctx context.Context, gitRepo *git.Repository, lfsClient lfs.Client) error {
contentStore := lfs.NewContentStore()
pointerChan := make(chan lfs.PointerBlob)
errChan := make(chan error, 1)
go lfs.SearchPointerBlobs(ctx, gitRepo, pointerChan, errChan)
uploadObjects := func(pointers []lfs.Pointer) error {
err := lfsClient.Upload(ctx, pointers, func(p lfs.Pointer, objectError error) (io.ReadCloser, error) {
if objectError != nil {
return nil, objectError
}
content, err := contentStore.Get(p)
if err != nil {
log.Error("Error reading LFS object %v: %v", p, err)
}
return content, err
})
if err != nil {
select {
case <-ctx.Done():
return nil
default:
}
}
return err
}
var batch []lfs.Pointer
for pointerBlob := range pointerChan {
exists, err := contentStore.Exists(pointerBlob.Pointer)
if err != nil {
log.Error("Error checking if LFS object %v exists: %v", pointerBlob.Pointer, err)
return err
}
if !exists {
log.Trace("Skipping missing LFS object %v", pointerBlob.Pointer)
continue
}
batch = append(batch, pointerBlob.Pointer)
if len(batch) >= lfsClient.BatchSize() {
if err := uploadObjects(batch); err != nil {
return err
}
batch = nil
}
}
if len(batch) > 0 {
if err := uploadObjects(batch); err != nil {
return err
}
}
err, has := <-errChan
if has {
log.Error("Error enumerating LFS objects for repository: %v", err)
return err
}
return nil
}