Move indexer notification to service layer (#26906)

Extract from #22266

2 files changed, 143 insertions, 0 deletions

diff --git a/services/indexer/indexer.go b/services/indexer/indexer.go
new file mode 100644
index 0000000000..d5f31d99ea
--- /dev/null
+++ b/services/indexer/indexer.go
@@ -0,0 +1,20 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package indexer
+
+import (
+	code_indexer "code.gitea.io/gitea/modules/indexer/code"
+	issue_indexer "code.gitea.io/gitea/modules/indexer/issues"
+	stats_indexer "code.gitea.io/gitea/modules/indexer/stats"
+	"code.gitea.io/gitea/modules/notification"
+)
+
+// Init initialize the repo indexer
+func Init() error {
+	notification.RegisterNotifier(NewNotifier())
+
+	issue_indexer.InitIssueIndexer(false)
+	code_indexer.Init()
+	return stats_indexer.Init()
+}
diff --git a/services/indexer/notify.go b/services/indexer/notify.go
new file mode 100644
index 0000000000..a18c66edb5
--- /dev/null
+++ b/services/indexer/notify.go
@@ -0,0 +1,123 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package indexer
+
+import (
+	"context"
+
+	issues_model "code.gitea.io/gitea/models/issues"
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+	code_indexer "code.gitea.io/gitea/modules/indexer/code"
+	issue_indexer "code.gitea.io/gitea/modules/indexer/issues"
+	stats_indexer "code.gitea.io/gitea/modules/indexer/stats"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/notification/base"
+	"code.gitea.io/gitea/modules/repository"
+	"code.gitea.io/gitea/modules/setting"
+)
+
+type indexerNotifier struct {
+	base.NullNotifier
+}
+
+var _ base.Notifier = &indexerNotifier{}
+
+// NewNotifier create a new indexerNotifier notifier
+func NewNotifier() base.Notifier {
+	return &indexerNotifier{}
+}
+
+func (r *indexerNotifier) NotifyAdoptRepository(ctx context.Context, doer, u *user_model.User, repo *repo_model.Repository) {
+	r.NotifyMigrateRepository(ctx, doer, u, repo)
+}
+
+func (r *indexerNotifier) NotifyCreateIssueComment(ctx context.Context, doer *user_model.User, repo *repo_model.Repository,
+	issue *issues_model.Issue, comment *issues_model.Comment, mentions []*user_model.User,
+) {
+	issue_indexer.UpdateIssueIndexer(issue.ID)
+}
+
+func (r *indexerNotifier) NotifyNewIssue(ctx context.Context, issue *issues_model.Issue, mentions []*user_model.User) {
+	issue_indexer.UpdateIssueIndexer(issue.ID)
+}
+
+func (r *indexerNotifier) NotifyNewPullRequest(ctx context.Context, pr *issues_model.PullRequest, mentions []*user_model.User) {
+	if err := pr.LoadIssue(ctx); err != nil {
+		log.Error("LoadIssue: %v", err)
+		return
+	}
+	issue_indexer.UpdateIssueIndexer(pr.Issue.ID)
+}
+
+func (r *indexerNotifier) NotifyUpdateComment(ctx context.Context, doer *user_model.User, c *issues_model.Comment, oldContent string) {
+	if err := c.LoadIssue(ctx); err != nil {
+		log.Error("LoadIssue: %v", err)
+		return
+	}
+	issue_indexer.UpdateIssueIndexer(c.Issue.ID)
+}
+
+func (r *indexerNotifier) NotifyDeleteComment(ctx context.Context, doer *user_model.User, comment *issues_model.Comment) {
+	if err := comment.LoadIssue(ctx); err != nil {
+		log.Error("LoadIssue: %v", err)
+		return
+	}
+	issue_indexer.UpdateIssueIndexer(comment.Issue.ID)
+}
+
+func (r *indexerNotifier) NotifyDeleteRepository(ctx context.Context, doer *user_model.User, repo *repo_model.Repository) {
+	issue_indexer.DeleteRepoIssueIndexer(ctx, repo.ID)
+	if setting.Indexer.RepoIndexerEnabled {
+		code_indexer.UpdateRepoIndexer(repo)
+	}
+}
+
+func (r *indexerNotifier) NotifyMigrateRepository(ctx context.Context, doer, u *user_model.User, repo *repo_model.Repository) {
+	issue_indexer.UpdateRepoIndexer(ctx, repo.ID)
+	if setting.Indexer.RepoIndexerEnabled && !repo.IsEmpty {
+		code_indexer.UpdateRepoIndexer(repo)
+	}
+	if err := stats_indexer.UpdateRepoIndexer(repo); err != nil {
+		log.Error("stats_indexer.UpdateRepoIndexer(%d) failed: %v", repo.ID, err)
+	}
+}
+
+func (r *indexerNotifier) NotifyPushCommits(ctx context.Context, pusher *user_model.User, repo *repo_model.Repository, opts *repository.PushUpdateOptions, commits *repository.PushCommits) {
+	if !opts.RefFullName.IsBranch() {
+		return
+	}
+
+	if setting.Indexer.RepoIndexerEnabled && opts.RefFullName.BranchName() == repo.DefaultBranch {
+		code_indexer.UpdateRepoIndexer(repo)
+	}
+	if err := stats_indexer.UpdateRepoIndexer(repo); err != nil {
+		log.Error("stats_indexer.UpdateRepoIndexer(%d) failed: %v", repo.ID, err)
+	}
+}
+
+func (r *indexerNotifier) NotifySyncPushCommits(ctx context.Context, pusher *user_model.User, repo *repo_model.Repository, opts *repository.PushUpdateOptions, commits *repository.PushCommits) {
+	if !opts.RefFullName.IsBranch() {
+		return
+	}
+
+	if setting.Indexer.RepoIndexerEnabled && opts.RefFullName.BranchName() == repo.DefaultBranch {
+		code_indexer.UpdateRepoIndexer(repo)
+	}
+	if err := stats_indexer.UpdateRepoIndexer(repo); err != nil {
+		log.Error("stats_indexer.UpdateRepoIndexer(%d) failed: %v", repo.ID, err)
+	}
+}
+
+func (r *indexerNotifier) NotifyIssueChangeContent(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldContent string) {
+	issue_indexer.UpdateIssueIndexer(issue.ID)
+}
+
+func (r *indexerNotifier) NotifyIssueChangeTitle(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldTitle string) {
+	issue_indexer.UpdateIssueIndexer(issue.ID)
+}
+
+func (r *indexerNotifier) NotifyIssueChangeRef(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldRef string) {
+	issue_indexer.UpdateIssueIndexer(issue.ID)
+}