Sync branches to DB immediately when handle git hook calling (gitea#29493)

Unlike other async processing in the queue, we should sync branches to
the DB immediately when handling git hook calling. If it fails, users
can see the error message in the output of the git command.

It can avoid potential inconsistency issues, and help #29494.

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

tests/integration/git_push_test.go

@@ -0,0 +1,131 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"fmt"
+	"net/url"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	git_model "code.gitea.io/gitea/models/git"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/git"
+	repo_service "code.gitea.io/gitea/services/repository"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGitPush(t *testing.T) {
+	onGiteaRun(t, testGitPush)
+}
+
+func testGitPush(t *testing.T, u *url.URL) {
+	t.Run("Push branches at once", func(t *testing.T) {
+		runTestGitPush(t, u, func(t *testing.T, gitPath string) (pushed, deleted []string) {
+			for i := 0; i < 100; i++ {
+				branchName := fmt.Sprintf("branch-%d", i)
+				pushed = append(pushed, branchName)
+				doGitCreateBranch(gitPath, branchName)(t)
+			}
+			pushed = append(pushed, "master")
+			doGitPushTestRepository(gitPath, "origin", "--all")(t)
+			return pushed, deleted
+		})
+	})
+
+	t.Run("Push branches one by one", func(t *testing.T) {
+		runTestGitPush(t, u, func(t *testing.T, gitPath string) (pushed, deleted []string) {
+			for i := 0; i < 100; i++ {
+				branchName := fmt.Sprintf("branch-%d", i)
+				doGitCreateBranch(gitPath, branchName)(t)
+				doGitPushTestRepository(gitPath, "origin", branchName)(t)
+				pushed = append(pushed, branchName)
+			}
+			return pushed, deleted
+		})
+	})
+
+	t.Run("Delete branches", func(t *testing.T) {
+		runTestGitPush(t, u, func(t *testing.T, gitPath string) (pushed, deleted []string) {
+			doGitPushTestRepository(gitPath, "origin", "master")(t) // make sure master is the default branch instead of a branch we are going to delete
+			pushed = append(pushed, "master")
+
+			for i := 0; i < 100; i++ {
+				branchName := fmt.Sprintf("branch-%d", i)
+				pushed = append(pushed, branchName)
+				doGitCreateBranch(gitPath, branchName)(t)
+			}
+			doGitPushTestRepository(gitPath, "origin", "--all")(t)
+
+			for i := 0; i < 10; i++ {
+				branchName := fmt.Sprintf("branch-%d", i)
+				doGitPushTestRepository(gitPath, "origin", "--delete", branchName)(t)
+				deleted = append(deleted, branchName)
+			}
+			return pushed, deleted
+		})
+	})
+}
+
+func runTestGitPush(t *testing.T, u *url.URL, gitOperation func(t *testing.T, gitPath string) (pushed, deleted []string)) {
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo, err := repo_service.CreateRepository(db.DefaultContext, user, user, repo_service.CreateRepoOptions{
+		Name:          "repo-to-push",
+		Description:   "test git push",
+		AutoInit:      false,
+		DefaultBranch: "main",
+		IsPrivate:     false,
+	})
+	require.NoError(t, err)
+	require.NotEmpty(t, repo)
+
+	gitPath := t.TempDir()
+
+	doGitInitTestRepository(gitPath)(t)
+
+	oldPath := u.Path
+	oldUser := u.User
+	defer func() {
+		u.Path = oldPath
+		u.User = oldUser
+	}()
+	u.Path = repo.FullName() + ".git"
+	u.User = url.UserPassword(user.LowerName, userPassword)
+
+	doGitAddRemote(gitPath, "origin", u)(t)
+
+	gitRepo, err := git.OpenRepository(git.DefaultContext, gitPath)
+	require.NoError(t, err)
+	defer gitRepo.Close()
+
+	pushedBranches, deletedBranches := gitOperation(t, gitPath)
+
+	dbBranches := make([]*git_model.Branch, 0)
+	require.NoError(t, db.GetEngine(db.DefaultContext).Where("repo_id=?", repo.ID).Find(&dbBranches))
+	assert.Equalf(t, len(pushedBranches), len(dbBranches), "mismatched number of branches in db")
+	dbBranchesMap := make(map[string]*git_model.Branch, len(dbBranches))
+	for _, branch := range dbBranches {
+		dbBranchesMap[branch.Name] = branch
+	}
+
+	deletedBranchesMap := make(map[string]bool, len(deletedBranches))
+	for _, branchName := range deletedBranches {
+		deletedBranchesMap[branchName] = true
+	}
+
+	for _, branchName := range pushedBranches {
+		branch, ok := dbBranchesMap[branchName]
+		deleted := deletedBranchesMap[branchName]
+		assert.True(t, ok, "branch %s not found in database", branchName)
+		assert.Equal(t, deleted, branch.IsDeleted, "IsDeleted of %s is %v, but it's expected to be %v", branchName, branch.IsDeleted, deleted)
+		commitID, err := gitRepo.GetBranchCommitID(branchName)
+		require.NoError(t, err)
+		assert.Equal(t, commitID, branch.CommitID)
+	}
+
+	require.NoError(t, repo_service.DeleteRepositoryDirectly(db.DefaultContext, user, repo.ID))
+}