gitea/services/mirror/mirror_pull.go

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// 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"
"fmt"
"strings"
"time"
"code.gitea.io/gitea/models/db"
repo_model "code.gitea.io/gitea/models/repo"
system_model "code.gitea.io/gitea/models/system"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/lfs"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/notification"
"code.gitea.io/gitea/modules/process"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
)
// gitShortEmptySha Git short empty SHA
const gitShortEmptySha = "0000000"
// UpdateAddress writes new address to Git repository and database
func UpdateAddress(ctx context.Context, m *repo_model.Mirror, addr string) error {
remoteName := m.GetRemoteName()
repoPath := m.GetRepository().RepoPath()
// Remove old remote
_, _, err := git.NewCommand(ctx, "remote", "rm").AddDynamicArguments(remoteName).RunStdString(&git.RunOpts{Dir: repoPath})
if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
return err
}
cmd := git.NewCommand(ctx, "remote", "add").AddDynamicArguments(remoteName).AddArguments("--mirror=fetch").AddDynamicArguments(addr)
if strings.Contains(addr, "://") && strings.Contains(addr, "@") {
cmd.SetDescription(fmt.Sprintf("remote add %s --mirror=fetch %s [repo_path: %s]", remoteName, util.SanitizeCredentialURLs(addr), repoPath))
} else {
cmd.SetDescription(fmt.Sprintf("remote add %s --mirror=fetch %s [repo_path: %s]", remoteName, addr, repoPath))
}
_, _, err = cmd.RunStdString(&git.RunOpts{Dir: repoPath})
if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
return err
}
if m.Repo.HasWiki() {
wikiPath := m.Repo.WikiPath()
wikiRemotePath := repo_module.WikiRemoteURL(ctx, addr)
// Remove old remote of wiki
_, _, err = git.NewCommand(ctx, "remote", "rm").AddDynamicArguments(remoteName).RunStdString(&git.RunOpts{Dir: wikiPath})
if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
return err
}
cmd = git.NewCommand(ctx, "remote", "add").AddDynamicArguments(remoteName).AddArguments("--mirror=fetch").AddDynamicArguments(wikiRemotePath)
if strings.Contains(wikiRemotePath, "://") && strings.Contains(wikiRemotePath, "@") {
cmd.SetDescription(fmt.Sprintf("remote add %s --mirror=fetch %s [repo_path: %s]", remoteName, util.SanitizeCredentialURLs(wikiRemotePath), wikiPath))
} else {
cmd.SetDescription(fmt.Sprintf("remote add %s --mirror=fetch %s [repo_path: %s]", remoteName, wikiRemotePath, wikiPath))
}
_, _, err = cmd.RunStdString(&git.RunOpts{Dir: wikiPath})
if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
return err
}
}
m.Repo.OriginalURL = addr
return repo_model.UpdateRepositoryCols(ctx, m.Repo, "original_url")
}
// mirrorSyncResult contains information of a updated reference.
// If the oldCommitID is "0000000", it means a new reference, the value of newCommitID is empty.
// If the newCommitID is "0000000", it means the reference is deleted, the value of oldCommitID is empty.
type mirrorSyncResult struct {
refName string
oldCommitID string
newCommitID string
}
// parseRemoteUpdateOutput detects create, update and delete operations of references from upstream.
func parseRemoteUpdateOutput(output string) []*mirrorSyncResult {
results := make([]*mirrorSyncResult, 0, 3)
lines := strings.Split(output, "\n")
for i := range lines {
// Make sure reference name is presented before continue
idx := strings.Index(lines[i], "-> ")
if idx == -1 {
continue
}
refName := lines[i][idx+3:]
switch {
case strings.HasPrefix(lines[i], " * "): // New reference
if strings.HasPrefix(lines[i], " * [new tag]") {
refName = git.TagPrefix + refName
} else if strings.HasPrefix(lines[i], " * [new branch]") {
refName = git.BranchPrefix + refName
}
results = append(results, &mirrorSyncResult{
refName: refName,
oldCommitID: gitShortEmptySha,
})
case strings.HasPrefix(lines[i], " - "): // Delete reference
results = append(results, &mirrorSyncResult{
refName: refName,
newCommitID: gitShortEmptySha,
})
case strings.HasPrefix(lines[i], " + "): // Force update
if idx := strings.Index(refName, " "); idx > -1 {
refName = refName[:idx]
}
delimIdx := strings.Index(lines[i][3:], " ")
if delimIdx == -1 {
log.Error("SHA delimiter not found: %q", lines[i])
continue
}
shas := strings.Split(lines[i][3:delimIdx+3], "...")
if len(shas) != 2 {
log.Error("Expect two SHAs but not what found: %q", lines[i])
continue
}
results = append(results, &mirrorSyncResult{
refName: refName,
oldCommitID: shas[0],
newCommitID: shas[1],
})
case strings.HasPrefix(lines[i], " "): // New commits of a reference
delimIdx := strings.Index(lines[i][3:], " ")
if delimIdx == -1 {
log.Error("SHA delimiter not found: %q", lines[i])
continue
}
shas := strings.Split(lines[i][3:delimIdx+3], "..")
if len(shas) != 2 {
log.Error("Expect two SHAs but not what found: %q", lines[i])
continue
}
results = append(results, &mirrorSyncResult{
refName: refName,
oldCommitID: shas[0],
newCommitID: shas[1],
})
default:
log.Warn("parseRemoteUpdateOutput: unexpected update line %q", lines[i])
}
}
return results
}
func pruneBrokenReferences(ctx context.Context,
m *repo_model.Mirror,
repoPath string,
timeout time.Duration,
stdoutBuilder, stderrBuilder *strings.Builder,
isWiki bool,
) error {
wiki := ""
if isWiki {
wiki = "Wiki "
}
stderrBuilder.Reset()
stdoutBuilder.Reset()
pruneErr := git.NewCommand(ctx, "remote", "prune").AddDynamicArguments(m.GetRemoteName()).
SetDescription(fmt.Sprintf("Mirror.runSync %ssPrune references: %s ", wiki, m.Repo.FullName())).
Run(&git.RunOpts{
Timeout: timeout,
Dir: repoPath,
Stdout: stdoutBuilder,
Stderr: stderrBuilder,
})
if pruneErr != nil {
stdout := stdoutBuilder.String()
stderr := stderrBuilder.String()
// sanitize the output, since it may contain the remote address, which may
// contain a password
stderrMessage := util.SanitizeCredentialURLs(stderr)
stdoutMessage := util.SanitizeCredentialURLs(stdout)
log.Error("Failed to prune mirror repository %s%-v references:\nStdout: %s\nStderr: %s\nErr: %v", wiki, m.Repo, stdoutMessage, stderrMessage, pruneErr)
desc := fmt.Sprintf("Failed to prune mirror repository %s'%s' references: %s", wiki, repoPath, stderrMessage)
if err := system_model.CreateRepositoryNotice(desc); err != nil {
log.Error("CreateRepositoryNotice: %v", err)
}
// this if will only be reached on a successful prune so try to get the mirror again
}
return pruneErr
}
// runSync returns true if sync finished without error.
func runSync(ctx context.Context, m *repo_model.Mirror) ([]*mirrorSyncResult, bool) {
repoPath := m.Repo.RepoPath()
wikiPath := m.Repo.WikiPath()
timeout := time.Duration(setting.Git.Timeout.Mirror) * time.Second
log.Trace("SyncMirrors [repo: %-v]: running git remote update...", m.Repo)
gitArgs := []git.CmdArg{"remote", "update"}
if m.EnablePrune {
gitArgs = append(gitArgs, "--prune")
}
gitArgs = append(gitArgs, git.CmdArgCheck(m.GetRemoteName()))
remoteURL, remoteErr := git.GetRemoteURL(ctx, repoPath, m.GetRemoteName())
if remoteErr != nil {
log.Error("SyncMirrors [repo: %-v]: GetRemoteAddress Error %v", m.Repo, remoteErr)
return nil, false
}
stdoutBuilder := strings.Builder{}
stderrBuilder := strings.Builder{}
if err := git.NewCommand(ctx, gitArgs...).
SetDescription(fmt.Sprintf("Mirror.runSync: %s", m.Repo.FullName())).
Run(&git.RunOpts{
Timeout: timeout,
Dir: repoPath,
Stdout: &stdoutBuilder,
Stderr: &stderrBuilder,
}); err != nil {
stdout := stdoutBuilder.String()
stderr := stderrBuilder.String()
// sanitize the output, since it may contain the remote address, which may contain a password
stderrMessage := util.SanitizeCredentialURLs(stderr)
stdoutMessage := util.SanitizeCredentialURLs(stdout)
// Now check if the error is a resolve reference due to broken reference
if strings.Contains(stderr, "unable to resolve reference") && strings.Contains(stderr, "reference broken") {
log.Warn("SyncMirrors [repo: %-v]: failed to update mirror repository due to broken references:\nStdout: %s\nStderr: %s\nErr: %v\nAttempting Prune", m.Repo, stdoutMessage, stderrMessage, err)
err = nil
// Attempt prune
pruneErr := pruneBrokenReferences(ctx, m, repoPath, timeout, &stdoutBuilder, &stderrBuilder, false)
if pruneErr == nil {
// Successful prune - reattempt mirror
stderrBuilder.Reset()
stdoutBuilder.Reset()
if err = git.NewCommand(ctx, gitArgs...).
SetDescription(fmt.Sprintf("Mirror.runSync: %s", m.Repo.FullName())).
Run(&git.RunOpts{
Timeout: timeout,
Dir: repoPath,
Stdout: &stdoutBuilder,
Stderr: &stderrBuilder,
}); err != nil {
stdout := stdoutBuilder.String()
stderr := stderrBuilder.String()
// sanitize the output, since it may contain the remote address, which may
// contain a password
stderrMessage = util.SanitizeCredentialURLs(stderr)
stdoutMessage = util.SanitizeCredentialURLs(stdout)
}
}
}
// If there is still an error (or there always was an error)
if err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to update mirror repository:\nStdout: %s\nStderr: %s\nErr: %v", m.Repo, stdoutMessage, stderrMessage, err)
desc := fmt.Sprintf("Failed to update mirror repository '%s': %s", repoPath, stderrMessage)
if err = system_model.CreateRepositoryNotice(desc); err != nil {
log.Error("CreateRepositoryNotice: %v", err)
}
return nil, false
}
}
output := stderrBuilder.String()
if err := git.WriteCommitGraph(ctx, repoPath); err != nil {
log.Error("SyncMirrors [repo: %-v]: %v", m.Repo, err)
}
gitRepo, err := git.OpenRepository(ctx, repoPath)
if err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to OpenRepository: %v", m.Repo, err)
return nil, false
}
log.Trace("SyncMirrors [repo: %-v]: syncing releases with tags...", m.Repo)
if err = repo_module.SyncReleasesWithTags(m.Repo, gitRepo); err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to synchronize tags to releases: %v", m.Repo, err)
}
if m.LFS && setting.LFS.StartServer {
log.Trace("SyncMirrors [repo: %-v]: syncing LFS objects...", m.Repo)
endpoint := lfs.DetermineEndpoint(remoteURL.String(), m.LFSEndpoint)
lfsClient := lfs.NewClient(endpoint, nil)
if err = repo_module.StoreMissingLfsObjectsInRepository(ctx, m.Repo, gitRepo, lfsClient); err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to synchronize LFS objects for repository: %v", m.Repo, err)
}
}
gitRepo.Close()
log.Trace("SyncMirrors [repo: %-v]: updating size of repository", m.Repo)
if err := repo_module.UpdateRepoSize(ctx, m.Repo); err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to update size for mirror repository: %v", m.Repo, err)
}
if m.Repo.HasWiki() {
log.Trace("SyncMirrors [repo: %-v Wiki]: running git remote update...", m.Repo)
stderrBuilder.Reset()
stdoutBuilder.Reset()
if err := git.NewCommand(ctx, "remote", "update", "--prune").AddDynamicArguments(m.GetRemoteName()).
SetDescription(fmt.Sprintf("Mirror.runSync Wiki: %s ", m.Repo.FullName())).
Run(&git.RunOpts{
Timeout: timeout,
Dir: wikiPath,
Stdout: &stdoutBuilder,
Stderr: &stderrBuilder,
}); err != nil {
stdout := stdoutBuilder.String()
stderr := stderrBuilder.String()
// sanitize the output, since it may contain the remote address, which may contain a password
stderrMessage := util.SanitizeCredentialURLs(stderr)
stdoutMessage := util.SanitizeCredentialURLs(stdout)
// Now check if the error is a resolve reference due to broken reference
if strings.Contains(stderrMessage, "unable to resolve reference") && strings.Contains(stderrMessage, "reference broken") {
log.Warn("SyncMirrors [repo: %-v Wiki]: failed to update mirror wiki repository due to broken references:\nStdout: %s\nStderr: %s\nErr: %v\nAttempting Prune", m.Repo, stdoutMessage, stderrMessage, err)
err = nil
// Attempt prune
pruneErr := pruneBrokenReferences(ctx, m, repoPath, timeout, &stdoutBuilder, &stderrBuilder, true)
if pruneErr == nil {
// Successful prune - reattempt mirror
stderrBuilder.Reset()
stdoutBuilder.Reset()
if err = git.NewCommand(ctx, "remote", "update", "--prune").AddDynamicArguments(m.GetRemoteName()).
SetDescription(fmt.Sprintf("Mirror.runSync Wiki: %s ", m.Repo.FullName())).
Run(&git.RunOpts{
Timeout: timeout,
Dir: wikiPath,
Stdout: &stdoutBuilder,
Stderr: &stderrBuilder,
}); err != nil {
stdout := stdoutBuilder.String()
stderr := stderrBuilder.String()
stderrMessage = util.SanitizeCredentialURLs(stderr)
stdoutMessage = util.SanitizeCredentialURLs(stdout)
}
}
}
// If there is still an error (or there always was an error)
if err != nil {
log.Error("SyncMirrors [repo: %-v Wiki]: failed to update mirror repository wiki:\nStdout: %s\nStderr: %s\nErr: %v", m.Repo, stdoutMessage, stderrMessage, err)
desc := fmt.Sprintf("Failed to update mirror repository wiki '%s': %s", wikiPath, stderrMessage)
if err = system_model.CreateRepositoryNotice(desc); err != nil {
log.Error("CreateRepositoryNotice: %v", err)
}
return nil, false
}
if err := git.WriteCommitGraph(ctx, wikiPath); err != nil {
log.Error("SyncMirrors [repo: %-v]: %v", m.Repo, err)
}
}
log.Trace("SyncMirrors [repo: %-v Wiki]: git remote update complete", m.Repo)
}
log.Trace("SyncMirrors [repo: %-v]: invalidating mirror branch caches...", m.Repo)
branches, _, err := git.GetBranchesByPath(ctx, m.Repo.RepoPath(), 0, 0)
if err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to GetBranches: %v", m.Repo, err)
return nil, false
}
for _, branch := range branches {
cache.Remove(m.Repo.GetCommitsCountCacheKey(branch.Name, true))
}
m.UpdatedUnix = timeutil.TimeStampNow()
return parseRemoteUpdateOutput(output), true
}
// SyncPullMirror starts the sync of the pull mirror and schedules the next run.
func SyncPullMirror(ctx context.Context, repoID int64) bool {
log.Trace("SyncMirrors [repo_id: %v]", repoID)
defer func() {
err := recover()
if err == nil {
return
}
// There was a panic whilst syncMirrors...
log.Error("PANIC whilst SyncMirrors[repo_id: %d] Panic: %v\nStacktrace: %s", repoID, err, log.Stack(2))
}()
m, err := repo_model.GetMirrorByRepoID(ctx, repoID)
if err != nil {
log.Error("SyncMirrors [repo_id: %v]: unable to GetMirrorByRepoID: %v", repoID, err)
return false
}
_ = m.GetRepository() // force load repository of mirror
ctx, _, finished := process.GetManager().AddContext(ctx, fmt.Sprintf("Syncing Mirror %s/%s", m.Repo.OwnerName, m.Repo.Name))
defer finished()
log.Trace("SyncMirrors [repo: %-v]: Running Sync", m.Repo)
results, ok := runSync(ctx, m)
if !ok {
if err = repo_model.TouchMirror(ctx, m); err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to TouchMirror: %v", m.Repo, err)
}
return false
}
log.Trace("SyncMirrors [repo: %-v]: Scheduling next update", m.Repo)
m.ScheduleNextUpdate()
if err = repo_model.UpdateMirror(ctx, m); err != nil {
log.Error("SyncMirrors [repo: %-v]: failed to UpdateMirror with next update date: %v", m.Repo, err)
return false
}
var gitRepo *git.Repository
if len(results) == 0 {
log.Trace("SyncMirrors [repo: %-v]: no branches updated", m.Repo)
} else {
log.Trace("SyncMirrors [repo: %-v]: %d branches updated", m.Repo, len(results))
gitRepo, err = git.OpenRepository(ctx, m.Repo.RepoPath())
if err != nil {
log.Error("SyncMirrors [repo: %-v]: unable to OpenRepository: %v", m.Repo, err)
return false
}
defer gitRepo.Close()
if ok := checkAndUpdateEmptyRepository(m, gitRepo, results); !ok {
return false
}
}
for _, result := range results {
// Discard GitHub pull requests, i.e. refs/pull/*
if strings.HasPrefix(result.refName, git.PullPrefix) {
continue
}
tp, _ := git.SplitRefName(result.refName)
// Create reference
if result.oldCommitID == gitShortEmptySha {
if tp == git.TagPrefix {
tp = "tag"
} else if tp == git.BranchPrefix {
tp = "branch"
}
commitID, err := gitRepo.GetRefCommitID(result.refName)
if err != nil {
log.Error("SyncMirrors [repo: %-v]: unable to GetRefCommitID [ref_name: %s]: %v", m.Repo, result.refName, err)
continue
}
notification.NotifySyncPushCommits(m.Repo.MustOwner(), m.Repo, &repo_module.PushUpdateOptions{
RefFullName: result.refName,
OldCommitID: git.EmptySHA,
NewCommitID: commitID,
}, repo_module.NewPushCommits())
notification.NotifySyncCreateRef(m.Repo.MustOwner(), m.Repo, tp, result.refName, commitID)
continue
}
// Delete reference
if result.newCommitID == gitShortEmptySha {
notification.NotifySyncDeleteRef(m.Repo.MustOwner(), m.Repo, tp, result.refName)
continue
}
// Push commits
oldCommitID, err := git.GetFullCommitID(gitRepo.Ctx, gitRepo.Path, result.oldCommitID)
if err != nil {
log.Error("SyncMirrors [repo: %-v]: unable to get GetFullCommitID[%s]: %v", m.Repo, result.oldCommitID, err)
continue
}
newCommitID, err := git.GetFullCommitID(gitRepo.Ctx, gitRepo.Path, result.newCommitID)
if err != nil {
log.Error("SyncMirrors [repo: %-v]: unable to get GetFullCommitID [%s]: %v", m.Repo, result.newCommitID, err)
continue
}
commits, err := gitRepo.CommitsBetweenIDs(newCommitID, oldCommitID)
if err != nil {
log.Error("SyncMirrors [repo: %-v]: unable to get CommitsBetweenIDs [new_commit_id: %s, old_commit_id: %s]: %v", m.Repo, newCommitID, oldCommitID, err)
continue
}
theCommits := repo_module.GitToPushCommits(commits)
if len(theCommits.Commits) > setting.UI.FeedMaxCommitNum {
theCommits.Commits = theCommits.Commits[:setting.UI.FeedMaxCommitNum]
}
theCommits.CompareURL = m.Repo.ComposeCompareURL(oldCommitID, newCommitID)
notification.NotifySyncPushCommits(m.Repo.MustOwner(), m.Repo, &repo_module.PushUpdateOptions{
RefFullName: result.refName,
OldCommitID: oldCommitID,
NewCommitID: newCommitID,
}, theCommits)
}
log.Trace("SyncMirrors [repo: %-v]: done notifying updated branches/tags - now updating last commit time", m.Repo)
// Get latest commit date and update to current repository updated time
commitDate, err := git.GetLatestCommitTime(ctx, m.Repo.RepoPath())
if err != nil {
log.Error("SyncMirrors [repo: %-v]: unable to GetLatestCommitDate: %v", m.Repo, err)
return false
}
if err = repo_model.UpdateRepositoryUpdatedTime(m.RepoID, commitDate); err != nil {
log.Error("SyncMirrors [repo: %-v]: unable to update repository 'updated_unix': %v", m.Repo, err)
return false
}
log.Trace("SyncMirrors [repo: %-v]: Successfully updated", m.Repo)
return true
}
func checkAndUpdateEmptyRepository(m *repo_model.Mirror, gitRepo *git.Repository, results []*mirrorSyncResult) bool {
if !m.Repo.IsEmpty {
return true
}
hasDefault := false
hasMaster := false
hasMain := false
defaultBranchName := m.Repo.DefaultBranch
if len(defaultBranchName) == 0 {
defaultBranchName = setting.Repository.DefaultBranch
}
firstName := ""
for _, result := range results {
if strings.HasPrefix(result.refName, git.PullPrefix) {
continue
}
tp, name := git.SplitRefName(result.refName)
if len(tp) > 0 && tp != git.BranchPrefix {
continue
}
if len(firstName) == 0 {
firstName = name
}
hasDefault = hasDefault || name == defaultBranchName
hasMaster = hasMaster || name == "master"
hasMain = hasMain || name == "main"
}
if len(firstName) > 0 {
if hasDefault {
m.Repo.DefaultBranch = defaultBranchName
} else if hasMaster {
m.Repo.DefaultBranch = "master"
} else if hasMain {
m.Repo.DefaultBranch = "main"
} else {
m.Repo.DefaultBranch = firstName
}
// Update the git repository default branch
if err := gitRepo.SetDefaultBranch(m.Repo.DefaultBranch); err != nil {
if !git.IsErrUnsupportedVersion(err) {
log.Error("Failed to update default branch of underlying git repository %-v. Error: %v", m.Repo, err)
desc := fmt.Sprintf("Failed to uupdate default branch of underlying git repository '%s': %v", m.Repo.RepoPath(), err)
if err = system_model.CreateRepositoryNotice(desc); err != nil {
log.Error("CreateRepositoryNotice: %v", err)
}
return false
}
}
m.Repo.IsEmpty = false
// Update the is empty and default_branch columns
if err := repo_model.UpdateRepositoryCols(db.DefaultContext, m.Repo, "default_branch", "is_empty"); err != nil {
log.Error("Failed to update default branch of repository %-v. Error: %v", m.Repo, err)
desc := fmt.Sprintf("Failed to uupdate default branch of repository '%s': %v", m.Repo.RepoPath(), err)
if err = system_model.CreateRepositoryNotice(desc); err != nil {
log.Error("CreateRepositoryNotice: %v", err)
}
return false
}
}
return true
}